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Designation: P519.1

Sponsor: SCC22-Power Quality

Title: Guide for Applying Harmonic Limits on Power Systems

Status: New Standard Project

Technical Contact: Mark F McGranaghan, Phone:865-218-8029, Email:mmcgranaghan@epri-peac.com **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer-service@ieee.org.

History: PAR APP: Dec 10, 2003

Project scope: IEEE Standard 519-1992, IEEE Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems, provides procedures for controlling harmonics on the power system along with recommended limits for customer harmonic injection and overall power system harmonic levels. This document provides example applications of the procedures and limits in IEEE 519-1992.

Project purpose: This guide will provide examples and suggestions for developing and implementing harmonic limits throughout the electric power system. This assists utilities and building owners.


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Designation: 519.1

Sponsor: SCC22-Power Quality

Title: Guide for Applying Harmonic Limits on Power Systems

Status: Withdrawn PAR. Standards project no longer endorsed by the IEEE.

Technical Contact: Mark F McGranaghan, Phone:865-218-8029, Email:mmcgranaghan@epri-peac.com **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer-service@ieee.org.

History: PAR APP: Mar 17, 1994

Project scope: The lastest revision of IEEE Std 519 addresses the need for harmonic control on the power system. Important sources of harmonics are described along with methods to analyze system response characteristics. Harmonic limits are proposed for both the electricity supplier and the electricity customer. The limits for the comsumer are in the form of harmonic current generation limits at the point of common coupling. The electricity supplier limits are in the form of voltage distortion limits. This document will use the proposed limits in IEEE 519 as a starting point and describe methodologies for implementing these limits. Specifically, the document will accomplish the following objectives: 1. Identify methods for measuring harmonic generation by specific nonlinear loads. Provide typical harmonic characteristics and important factors affecting the harmonic generation. 2. Provide methods for evaluating harmonic levels at the point of common coupling (PCC). The concepts of the PPC, direction of harmonic current flow, the maximum demand load current, the short circuit ration (SCR), and the total demand distortion (TDD) will all be described and defined. Measurement procedures for evaluating both the harmonic currents and voltage distortion at the PCC will be described in particular. Statistical procedures for evaluating these harmonic levels will be presented. 3. Provide methods for evaluating expected harmonic levels at new customers. Methods to estimate harmonic currents for combinations of loads will be presented and procedures for evaluating these currents with respect to the harmonic limits will be described. 4. Describe methods for harmonic control at individual customers and on the overall system. Filter design procedures for individual customers, taking into account concerns for interaction with the power system, will be presented. Alternative methods for controlling harmonics in a customer facility will also by described. Filter design for harmonic voltage control on the overall power system will also be described. 5. Describe methods for ongoing harmonic performance monitoring and evaluations. This will include statistical procedures for characterizing harmonic levels and the role of simulations in assessing system performance. 6. Provide example of IEEE-519 application for a range of different customer types and system characteristics.

Project purpose: Provide guidelines for implementation of harmonic limits for individual customers and for the overall power system.


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Designation: 519a

Sponsor: SCC22-Power Quality

Title: Guide for Applying Harmonic Limits on Power Systems

Status: Withdrawn PAR. Standards project no longer endorsed by the IEEE.

Technical Contact: Mark F McGranaghan, Phone:865-218-8029, Email:mmcgranaghan@epri-peac.com **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer-service@ieee.org.

History: PAR APP: Mar 17, 1994

Project scope: The lastest revision of IEEE Std 519 addresses the need for harmonic control on the power system. Important sources of harmonics are described along with methods to analyze system response characteristics. Harmonic limits are proposed for both the electricity supplier and the electricity customer. The limits for the comsumer are in the form of harmonic current generation limits at the point of common coupling. The electricity supplier limits are in the form of voltage distortion limits. This document will use the proposed limits in IEEE 519 as a starting point and describe methodologies for implementing these limits. Specifically, the document will accomplish the following objectives: 1. Identify methods for measuring harmonic generation by specific nonlinear loads. Provide typical harmonic characteristics and important factors affecting the harmonic generation. 2. Provide methods for evaluating harmonic levels at the point of common coupling (PCC). The concepts of the PPC, direction of harmonic current flow, the maximum demand load current, the short circuit ration (SCR), and the total demand distortion (TDD) will all be described and defined. Measurement procedures for evaluating both the harmonic currents and voltage distortion at the PCC will be described in particular. Statistical procedures for evaluating these harmonic levels will be presented. 3. Provide methods for evaluating expected harmonic levels at new customers. Methods to estimate harmonic currents for combinations of loads will be presented and procedures for evaluating these currents with respect to the harmonic limits will be described. 4. Describe methods for harmonic control at individual customers and on the overall system. Filter design procedures for individual customers, taking into account concerns for interaction with the power system, will be presented. Alternative methods for controlling harmonics in a customer facility will also by described. Filter design for harmonic voltage control on the overall power system will also be described. 5. Describe methods for ongoing harmonic performance monitoring and evaluations. This will include statistical procedures for characterizing harmonic levels and the role of simulations in assessing system performance. 6. Provide example of IEEE-519 application for a range of different customer types and system characteristics.

Project purpose: Provide guidelines for implementation of harmonic limits for individual customers and for the overall power system.


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Designation: 929-1988

Sponsor: SCC21-Fuel Cells, Photovoltaics, Dispersed Generation, and Energy Storage

Reaffirmation status and year: 1991

Title: IEEE Recommended Practice for Utility Interface of Residential and Intermediate Photovoltaic (PV) Systems

Status: Superseded **This recommended practice was superseded by 929-2000.

History: BD APP: Dec 11, 1986, ANSI APP: Dec 18, 1991

Abstract: Recommendations and requirements that ensure operation of the terrestrial photovoltaic (PV) system that is compatible with the electric utility are provided. Factors relating to personnel safety, equipment protection, and power quality are addressed. The standard applies to utility-interconnected residential and interm ediate-size PV power systems capable of two-way energy flow with the utility. It addresses the interface between the PV system and the utility, and provides technical recommendations for the characteristics of the interface. Power quality, equipment protection, and safety of personnel are covered.

Keywords: PV, photovoltaic systems, photovoltaie, Power system protection, Photovoltaic power systems, Occupational health and safety


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Designation: 929-2000

Sponsor: SCC21-Fuel Cells, Photovoltaics, Dispersed Generation, and Energy Storage

Title: IEEE Recommended Practice for Utility Interface of Photovoltaic (PV) Systems

Status: Withdrawn Standard. Withdrawn Date: Feb 06, 2006. This historical standard is available for sale in electronic format (PDF) through the IEEE Online Store at www.shop.ieee.org. You may also order by calling +1 800 678 IEEE (in the US) or +1 732 981 0060 (outside of the US). **This recommended practice supersedes 929-1988 (R1991).

Technical Contact: John Stevens, Phone:505-844-7717, Email:jwsteve@sandia.gov **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer-service@ieee.org.

History: PAR APP: Sep 19, 1996, BD APP: Jan 30, 2000, ANSI APP: Jun 07, 2000

Project scope: This recommended practice describes the interface, functions, and requirements necessary in the interconnection of a PV power system with an electric utility. It also describes the acceptable and safe practices for accomplishing those functions and meeting the requirements.

Project purpose: Provide recommendations and requirements that apply to the interconnection of a Photovoltaic system with an electric utility.

Abstract: " This recommended practice contains guidance regarding equipment and functionsnecessary to ensure compatible operation of photovoltaic (PV) systems that are connected in par-allel with the electric utility. This includes factors relating to personnel safety, equipment protection,power quality, and utility system operation. This recommended practice also contains informationregarding islanding of PV systems when the utility is not connected to control voltage andfrequency, as well as techniques to avoid islanding of distributed resources. "

Keywords: "islanding,nonislanding inverter,photovoltaic,utility connection"


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Designation: 1021-1988

Title: IEEE Recommended Practice for Utility Interconnection of Small Wind Energy Conversion Systems

Status: Withdrawn Standard. Withdrawn Date: May 20, 1996. No longer endorsed by the IEEE. Available for purchase as archive document from Global Engineering, Phone: 1-800-854-7179, Fax: 303-397-2740. Out side the U.S. call 303-792-2181.

Technical Contact: Douglas C Dawson, Phone:818-508-8006, Email:d.c.dawson@ieee.org **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer-service@ieee.org.

History: BD APP: Dec 11, 1986, ANSI APP: May 18, 1987

Abstract: Guidelines and operating procedures necessary to connect and operate a small wind energy conversion system (SWECS) user, owner, or installer with interface in parallel with an electric utility system are provided for the user, owner, or installer of the SWECS. The interface between the wind system and the utility and the factors relating to equipment protection, power quality, and the safety of operating personnel and the general public are addressed. Installation approval procedures are covered.

Keywords: wind, energy, conversion, interconnedtion, utility


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Designation: 1100-2005

Sponsor: IEEE Industry Applications Society/Power Systems Engineering

Title: IEEE Recommended Practice for Powering and Grounding Electronic Equipment

Status: Approved Publication of IEEE , Published Date: May 24, 2006

Technical Contact: Douglas S Dorr, Phone:407-968-3010, Email:d.dorr@ieee.org **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer- service@ieee.org. To purchase this standard, or for pricing and availability go to http://shop.ieee.org/ieeestore and type in the standard number.

History: PAR APP: Sep 21, 2000, BD APP: Dec 09, 2005, ANSI APP: Dec 29, 2005

Project scope: Recommends design, installation and maintenance practices for electrical power, grounding (including both safety and noise control) and protection of electronic loads such as industrial controllers, computers and other information technology equipment used in commercial and industrial applications.

Project purpose: To revise and update the second edition of Standard 1100.

Abstract: The IEEE Emerald Bookpresents a collection of consensus best practices for thepowering and grounding of electronic equipment used in commercial and industrial applications.The main objective is to provide consensus recommended practices in an area where conflictinginformation and conflicting design philosophies have dominated. The recommended practicesdescribed are intended to enhance equipment performance while maintaining a safe installation. Adescription of the nature and origin of power disturbances is provided, followed by theory on thevarious parameters that impact power quality. Information on quantifying and resolving power andgrounding related concerns using measurement and diagnostic instrumentation and standardizedinvestigative procedures are included. Recommended power protection equipment and wiring andgrounding system design practices are presented. Information on telecommunications systempower protection as well as grounding, industrial system grounding, and noise control is included.Finally a selection of case studies are presented to support the recommended practices presentedthroughout the book.

Keywords: commercial applications, electrical power, electronic equipment, grounding, industrialapplications, power conditioning, power disturbance, power monitor, power quality


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Designation: 1100-1999

Sponsor: IEEE Industry Applications Society/Power Systems Engineering

Title: IEEE Recommended Practice for Powering and Grounding Electronic Equipment

Status: Superseded

History: PAR APP: Mar 18, 1999, BD APP: Mar 22, 1999, ANSI APP: Nov 16, 1999

Project scope: Recommends design, installation and maintenance practices for electrical power, grounding (including both safety and noise control) and protection of electronic loads such as industrial controllers, computers, and other information technology equipment used in commercial and industrial applications.

Project purpose: To revise and update the first edition of Standard 1100, including the addition of information specificaloly for distributed (networked) information technology equipment and telecommunications equipment.

Abstract: " Recommended design, installation, and maintenance practices for electrical powerand grounding (including both power- related and signal-related noise control) of sensitive elec-tronic processing equipment used in commercial and industrial applications are presented. Themain objective is to provide a consensus of recommended practices in an area where conflict-ing information and confusion, stemming primarily from different viewpoints of the sameproblem, have dominated. Practices herein address electronic equipment performance issueswhile maintaining a safe installation. A brief description is given of the nature of power qualityproblems, possible solutions, and the resources available for assistance in dealing with prob-lems. Fundamental concepts are reviewed. Instrumentation and procedures for conducting asurvey of the power distribution system are described. Site surveys and site power analysesare considered. Case histories are given to illustrate typical problems. "

Keywords: "commercial applications, electrical power, grounding, industrial applications, sen-sitive equipment"


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Designation: 1100-1992

Sponsor: IEEE Industry Applications Society/Power Systems Engineering

Title: IEEE Recommended Practice for Powering and Grounding Sensitive Electronic Equipment

Status: Superseded **IEEE Emerald Book

History: PAR APP: Sep 28, 1985, BD APP: Jun 18, 1992, ANSI APP: Jan 04, 1993

Abstract: Recommended design, installation, and maintenance practices for electrical power and grounding (including both power- related and signal-related noise control) of sensitive electronic processing equipment used in commercial and industrial applications are presented. The main objective is to provide a consensus of recommended practices in an area where conflicting information and confusion, stemming primarily from different view points of the same problem, have dominated. Practices herein address electronic equipment performance issues while maintaining a safe installation. A brief description is given of the nature of power quality problems, possible solutions, and the resources available for assistance in dealing with problems. Fundamental concepts are reviewed. Instrumentation and procedures for conducting a survey of the power distribution system are described. Site surveys and site power analysis are considered. Case histories are given to illustrate typical problems.

Keywords: grounding, Sensitive equipment, Industrial applications, Electrical power, Commercial applications


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Designation: 1159-1995

Sponsor: SCC22-Power Quality

Reaffirmation status and year: 2001

Title: IEEE Recommended Practice for Monitoring Electric Power Quality

Status: Approved Publication of IEEE

Technical Contact: L. Charles Smith, Phone:(615) 675-1500 **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer- service@ieee.org. To purchase this standard, or for pricing and availability go to http://shop.ieee.org/ieeestore and type in the standard number.

History: BD APP: Jun 14, 1995, ANSI APP: Feb 02, 1996

Abstract: " The monitoring of electric power quality of ac power systems, definitions of power qualityterminology, impact of poor power quality on utility and customer equipment, and the measurement ofelectromagnetic phenomena are covered. "

Keywords: "data interpretation,electric power quality,electromagnetic phenomena,monitoring,power quality definitions"


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Designation: P1159

Sponsor: IEEE Power Engineering Society/Transmission and Distribution

Title: Recommended Practice for Monitoring Electric Power Quality

Status: Revision Project

Technical Contact: Randy Collins, Phone:864-656-5920, Email:randy.collins@ces.clemson.edu **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer-service@ieee.org.

History: PAR APP: Mar 30, 2006

Project scope: This recommended practice encompasses the monitoring of electrical characteristics of single-phase and polyphase ac power systems. It includes consistent descriptions of conducted electromagnetic phenomena occurring on power systems. The document presents definitions of nominal conditions and deviations from these nominal conditions that may originate within the source of supply or load equipment, or from interactions between the source and the load. Also, this document presents recommendations for measurement techniques, application techniques, and interpretation of monitoring results.

Project purpose: The use of equipment that causes and is susceptible to various electromagnetic phenomena has heightened the interest in power quality. An increase in operational problems has led to a variety of attempts to describe the phenomena. Because different segments of the technical community have used different terminologies to describe these electromagnetic events, this Recommended Practice will provide users with a consistent set of terms and definitions for describing these events. An understanding of how power quality events impact the power system and end- use equipment is required in order to make monitoring useful. Proper measuring techniques are required to safely obtain useful accurate data. Appropriate location of monitors, systematic studies, and interpretation of results will enhance the value of power quality monitoring. The purpose of this Recommended Practice is to assist users as well as equipment and software manufacturers and vendors by describing techniques for defining, measuring, quantifying, and interpreting electromagnetic disturbances on the power system.


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Designation: 1159.1

Sponsor: SCC22-Power Quality

Title: Recommended Practice for Power Quality Measurements in A.C. Power Supply Systems

Status: Withdrawn PAR. Standards project no longer endorsed by the IEEE.

Technical Contact: Charles Perry, Phone:865-218-8034, Email:chperry@ieee.org **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer-service@ieee.org.

History: PAR APP: Mar 20, 1997

Project scope: Scope: "Methods for measurement and interpretation of results for power quality parameters in a.c. power supply systems." This recommended practice will establish the data acquisition attributes necessary to characterize the electromagnetic phenomena listed in Table 2 of IEEE Std.1159-1995 (R2001). This recommended will include definitions, instrumentation categories and technical requirements that are related to the type of disturbance to be recorded. The disturbances will be characterized by converting suitably sampled voltage and current data set into specific power quality categories and with specific attributes within each category.

Project purpose: The purpose of this project is to provide a single recommended practice for acquiring and interpreting the attributes of power quality disturbances. There are two components to this work. One objective of this recommended is to describe the technical measurement requirements for each type of disturbance in Std 1159-1995 (R2001) to avoid confusion and interpretation of levels or limits specified in other IEEE standards. The second objective is to provide methods for interpreting these measurements into a quantifiable set of descriptors. The draft international power quality measurement standard IEC 61000-4-30 covers some of these issues, but is limited in scope. This project will use the IEC 61000-4-30 draft standard as a core, and expand upon it by adding the work already done by the P1159.1 Task Force and the P1159.2 Task Force. IEEE Std 1159-1995 (R2001) defines disturbances in 24 categories of typical characteristics of power system electromagnetic phenomena. Each category is discussed in several other standards in terms of emission limits, severity levels, planning levels or immunity levels. Measurement requirements are not currently covered by standards. Therefore, levels or limits may be subjected to interpretation. This adds confusion in the rationale for which standards were drafted. Furthermore, equipment which operates on the ac power system does not respond solely to the phenomena listed in 1159-1995 (R2001). Studies have shown that attributes not commonly quantified by measuring equipment may have a significant impact on the equipment's ability to operate during power quality variations. This standard will provide a set of attributes that are important to equipment connected to the ac power system and provide recommended methods of arriving at these attributes from the measurement devices.


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Designation: 1159.2

Sponsor: SCC22-Power Quality

Title: Recommended Practice for the Characterization of a Power Quality Event Given an Adequately Sampled Set of Digital Data Points

Status: Withdrawn PAR. Standards project no longer endorsed by the IEEE.

Technical Contact: Larry Morgan, Phone:704-875-2444, Email:larrymorgan1@yahoo.com **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer-service@ieee.org.

History: PAR APP: Mar 20, 1997

Project scope: This project will develop a recommended practice for converting a suitably sampled voltage and current data set into specific power quality categories and describe specific attributes within each category. The standard will utilize appropriate definitions, categories and sample rates currently being developed by other task forces under SCC22 and Standard 1159-1995.

Project purpose: Emphasis is being placed on compatibility contracts for power quality between that delivered by power suppliers and that needed by equipment manufacturers. Technical digital definitions for events such as sags (dips) and other non-harmonic events are to be developed. The translation from sets of digital data to statistically comparable events would be used for purposes of comparing power suppliers, comparing susceptibility qualities of equipment, and evaluating performance against specifications or contracts. This work extends existing and proposed phenomena definitions to more completely characterize their effects on typical equipment.


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Designation: 1159.3-2003

Sponsor: SCC22-Power Quality

Title: IEEE Recommended Practice for the Transfer of Power Quality Data

Status: Approved Publication of IEEE , Published Date: Jan 12, 2004

Technical Contact: John Csomay, Phone:804-771-3664, Email:J.CSOMAY@IEEE.ORG **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer- service@ieee.org. To purchase this standard, or for pricing and availability go to http://shop.ieee.org/ieeestore and type in the standard number.

History: PAR APP: Mar 20, 1997, BD APP: Mar 20, 2003, ANSI APP: Aug 07, 2003

Project scope: This recommended practice will develop a criteria for the transfer of power quality data between instruments and computers. This data includes raw, processed, simulated, proposed, specified and calculated data. The transfer criteria will include the data as well as appropriate data characterization parameters, such as sampling rate, resolution, calibration status, instrument identification, and other pertinent or desired characteristics or data. The recommended practice will provide criteria guidelines for transferring power quality data.

Project purpose: The power quality industry lacks an adequate open and accepted data format standard for the transfer of power quality data between instruments and computers. This lack of a transfer standard significantly inhibits the analysis process of power quality assessments using multi- vendor and multi-device data. The analysis functions of signature patterns, history, and multiple measurement points are almost non-existent because of the lack of the ability to transfer data from multiple sources to a common analysis computer. Acceptance of an industry standard power quality data transfer format will significantly add to the value of all power quality data and open new opportunities for the resolution, planning and understanding of power quality activities. This will serve to satisfy the validation, trending, overlay, spectrum analysis, and other needs of client activities.

Abstract: "IEEE Std 1159.3-2003, IEEE Recommended Practice for the Transfer of Power Quality Data"

Keywords: "data interchange, file format, measurement, monitoring, power quality, power quality data interchange format (PQDIF)"


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Designation: 1250-1995

Sponsor: IEEE Power Engineering Society/Transmission and Distribution

Reaffirmation status and year: 2002

Title: IEEE Guide for Service to Equipment Sensitive to Momentary Voltage Disturbances

Status: Approved Publication of IEEE **administratively withdrawn on 15-Jan-2001.

Technical Contact: Daniel J Ward, Phone:804-775-5328, Email:d.ward@ieee.org **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer- service@ieee.org. To purchase this standard, or for pricing and availability go to http://shop.ieee.org/ieeestore and type in the standard number.

History: PAR APP: Dec 06, 1990, BD APP: Mar 16, 1995, ANSI APP: Oct 29, 2002

Abstract: Computers, computer-like products, and equipment using solid-state power conversion have created entirely new areas of power quality considerations. There is an increasing awareness that much of this new user equipment is not designed to withstand the surges, faults, and reclosing duty present on typical distribution systems. Momentary voltage disturbances occuring in ac power distribution and utilization systems, their potential effects on this new, sensitive, user equipment, and guidance toward mitigation of these effects are described. Harmonic distortion limits are also discussed.

Keywords: surge protection, power conditioners, momentary voltage disturbances, harmonic distortion, faults, disturbance analyzers, Surges, Sensitive equipment, Noise


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Designation: P1250

Sponsor: IEEE Power Engineering Society/Transmission and Distribution

Title: Guide for Identifying and Improving Voltage Quality in Power Systems

Status: Revision Project

Technical Contact: Dennis Hansen, Phone:801-220-4816, Email:dennis.hansen@pacificorp.com **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer-service@ieee.org.

History: PAR APP: Mar 16, 2006

Project scope: This guide will assist readers in identifying and improving voltage quality in power systems, and will reference publications in this area.
More specifically, this Guide includes:
1. Voltage quality levels from benchmarking studies
2. Factors that affect power system performance
3. Mitigation measures that improve power system performance
4. References to current relevant in-depth IEEE standards and other documents
This Guide only addresses subjects in depth where no other power quality reference does so. It is a "gateway" document for power quality which points the way to other documents in this field.

Project purpose: The primary purpose in writing this Guide is to assist power delivery system designers and operators in delivering power with voltage quality that is compatible with electrical end-use equipment. Another purpose is to point utility system customers toward power quality solutions that may exist in the power utilization system and equipment.


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Designation: 1346-1998

Sponsor: SCC22-Power Quality

Reaffirmation status and year: 2004

Title: IEEE Recommended Practice for Evaluating Electric Power System Compatibility With Electronic Process Equipment

Status: Approved Publication of IEEE

Technical Contact: Van Wagner, Phone:248-619-1035, Email:wagnerv@squared.com **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer- service@ieee.org. To purchase this standard, or for pricing and availability go to http://shop.ieee.org/ieeestore and type in the standard number.

History: PAR APP: Jun 14, 1995, BD APP: May 05, 1998, ANSI APP: Feb 04, 1999

Project scope: The group will develop a recommended practice for evaluating technical and economic compatibility. The scope of the compatibility is industrial and commercial electronic process equipment, facility electrical network, and electric utility feed to the facility.

Project purpose: Develop a standardized methodology for evaluating compatibility that provides a common basis of comparison for equipment manufacturers, utilities, consultants, etc.

Abstract: " A standard methodology for the technical and financial analysis of voltage sag compati-bility between process equipment and electric power systems is recommended. The methodologypresented is intended to be used as a planning tool to quantify the voltage sag environment andprocess sensitivity. It shows how technical and financial alternatives can be evaluated. Perfor-mance limits for utility systems, power distribution systems, or electronic process equipment are notincluded. "

Keywords: "power quality,power quality monitoring,sensitive equipment,voltage loss,voltage sags"


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Designation: P1409

Sponsor: IEEE Power Engineering Society/Transmission and Distribution

Title: Guide for the Application of Power Electronics for Power Quality Improvement on Distribution Systems Rated 1 kV Through 38 kV

Status: New Standard Project

Technical Contact: Ambra Sannino, Phone:+46317723832, Email:ambra.sannino@ieee.org **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer-service@ieee.org.

History: PAR APP: Jun 25, 1998

Project scope: This project will develop a guide which introduces and defines the emerging technology of custom power. This technology involves devices and circuit configurations of power electronic equipment used in utility power distribution systems rated 1 kV through 38 kV for the purposes of mitigating problems associated with power quality. This guide will include definitions, general need guidelines, performance objectives, electrical environments, input/output criteria, performance measurements, case studies, bibliography, and engineering tradeoffs. The proposed document will address power assessment techniques as specified by IEEE Std 1250-1005, which defines power quality terms and phenomena, and IEEE Std 1159-1995 which provides a recommended practice for measuring power quality.

Project purpose: To provide guidelines and performance expectations for the application of power electronic-based equipment on utility distribution systems to improve power quality and control in these distribution systems. It will be a resource to utilities as they enter into the competitive marketplace, providing detailed information about custom power devices as options to solving power quality problems.


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Designation: 1433

Sponsor: SCC22-Power Quality

Title: A Standard Glossary of Power Quality Terminology

Status: Withdrawn PAR. Standards project no longer endorsed by the IEEE.

Technical Contact: Philip P Barker, Phone:518-374-4699, Email:pbarker@nycap.rr.com **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer-service@ieee.org.

History: PAR APP: Jun 14, 1995

Project scope: To develop a common set of definitions describing the various types of power quality disturbances and phenomena which occur.

Project purpose: To develop common definitions to the varied interpretations of power quality phenomena as proposed by several IEEE working groups including: P1159, P1250, P1100, P519A, C62.


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Designation: 1564

Sponsor: IEEE Power Engineering Society/Transmission and Distribution

Title: Recommended Practice for the Establishment of Voltage Sag Indices

Status: Withdrawn PAR. Standards project no longer endorsed by the IEEE.

Technical Contact: Michael Sheehan, Phone:206 224-2231, Email:msheeh@puget.com **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer-service@ieee.org.

History: PAR APP: Jan 30, 2000

Project scope: This recommended practice identifies useful voltage sag indices for customers, vendors and the electric utilities. The document will identify the method of calculating such indices. The indices are intended to be applied to distribution substations, circuits and defined regions.

Project purpose: Sag indices are needed to indicate the different performance levels experienced at the transmission, subtransmission, substation and distribution circuit levels. In addition, the characteristic exposure that a typical distribution system encounter needs to be quantified in order to guide manufacturers in the appropriate design of ride-through alternatives for user load equipment. The proposed standard should help utilities and manufactures to compute the advantages/disadvantages of various connections to the electrical system. Sag indices will be determined using the work of IEEE 1250-1995, Std 1159-1995, Std 1346-1998, Chapter 9 of IEEE Std 493, and recent surveys of power quality users and utility systems.


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Designation: 1566-2005

Sponsor: IEEE Industry Applications Society/Petroleum & Chemical Industry

Title: IEEE Standard for Performance of Adjustable Speed AC Drives Rated 375 kW and Larger

Status: Approved Publication of IEEE , Published Date: Jun 07, 2006

Technical Contact: William Lockley, Phone:403-239-2164, Email:lockley@ieee.org **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer- service@ieee.org. To purchase this standard, or for pricing and availability go to http://shop.ieee.org/ieeestore and type in the standard number.

History: PAR APP: Jan 30, 2000, BD APP: Dec 07, 2005, ANSI APP: May 15, 2006

Project scope: This standard applies to AC adjustable speed drive (ASD) systems rated over 375 kW and above 750 V output voltage as used in petrochemical and similar applications. It covers the performance requirements for an ASD system including, but not limited to, input transformer or reactor as required, power electronics, control interfaces, cooling system, switchgear, and motor. Requirements for power quality, engineering analysis, start-up assistance, training, and spare parts are also included. Certain items such as the motor, switchgear or transformer may be excluded from the scope of vendor supply if so specified in the data sheets; however the system vendor shall specify any special requirements for the equipment thus excluded.

Project purpose: The purpose of this document is to assist users to define the required performance of a drive system in clear terms. It is not intended to specify a particular technology which must be followed. It is intended to be used with the data sheets which are included in the appendix in the document.

Abstract: This standard applies to AC adjustable speed drive (ASD) systems rated over 375 kW and above 750 V output voltage as used in petrochemical and similar applications. It covers the performance requirements for an ASD system including, but not limited to, input transformer or reactor as required, power electronics, control interfaces, cooling system, switchgear, and motor. Requirements for power quality, engineering analysis, start-up assistance, training, and spare parts are also included. Certain items such as the motor, switchgear or transformer may be excluded from the scope of vendor supply if so specified in the data sheets; however the system vendor shall specify any special requirements for the equipment thus excluded.

Keywords: adjustable speed, large drives


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Designation: 1585-2002

Sponsor: IEEE Power Engineering Society/Substations

Title: IEEE Guide for the Functional Specification of Medium Voltage (1- 35kV) Electronic Series Devices for Compensation of Voltage Fluctuations

Status: Approved Publication of IEEE , Published Date: Oct 08, 2002

Technical Contact: George G Karady, Phone:480-965-6569, Email:karady@asu.edu **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer- service@ieee.org. To purchase this standard, or for pricing and availability go to http://shop.ieee.org/ieeestore and type in the standard number.

History: PAR APP: Jun 14, 2001, BD APP: Sep 12, 2002, ANSI APP: Jan 22, 2003

Project scope: This document provides general guidelines for the preparation of a functional specification for solid state electronic devices used mainly for compensation of voltage fluctuation. The guide covers devices rated to medium voltage (1 kV-35 kV). This device contains in general :an inverter, rectifier or dc to dc converter, energy storage device, injection transformer connected in series with the load and normally open by-pass switch. In order to interface these devices with the load additional equipment should be provided including current and potential transformer bypass and isolation breakers and three -phase low voltage service for auxiliary power.

Project purpose: The guide includes technical clauses describing the user's requirements, including operation methods and environmental conditions. It specifies basic requirements of solid state electronic devices used for compensation of voltage fluctuations. Also the guide covers the required installation and start up services.

Abstract: An approach to prepare a specification for an electronic device connected in series tocompensate voltage fluctuations is presented. This guide intends to provide a base specification toallow users to modify specific parts of the document to meet their practical needs.

Keywords: "energy storage, injection transformer, inverter, power electronics, power quality, sensitive loads, series compensation, voltage control"


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Designation: 1623-2004

Sponsor: IEEE Power Engineering Society/Substations

Title: IEEE Guide for the Functional Specification of Medium Voltage (1 kV - 35 kV) Electronic Shunt Devices for Dynamic Voltage Compensation

Status: Approved Publication of IEEE , Published Date: May 11, 2005

Technical Contact: George G Karady, Phone:480-965-6569, Email:karady@asu.edu **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer- service@ieee.org. To purchase this standard, or for pricing and availability go to http://shop.ieee.org/ieeestore and type in the standard number.

History: PAR APP: Sep 12, 2002, BD APP: Nov 15, 2004, ANSI APP: Feb 07, 2005

Project scope: This project provides guidelines for preparation of functional specification for solid state shunt device used to compensate voltage fluctuation. The guide covers devices rated to medium voltage (1-35kV). The device contains in general: an inverter, rectifier or DC converter, energy storage device, coupling transformer connected in parallel. In addition, additional equipment should be provided to assure proper interface with the electric network. The additional equipment includes: voltage and current transformers, disconnect switches, circuit breakers and three phase low voltage service for auxiliary power.

Project purpose: The purpose of the guide is to provide information to utilities and other users to prepare a specification when they intend to purchase a shunt device. The Medium Voltage (1kV-35kV) Electronic Shunt Devices For Dynamic Voltage Compensation are new devices and utility engineers are not familiar with their requirements.

Abstract: This document provides general guidelines for the preparation of a functional specification for solid-state electronic shunt devices used mainly for compensation of voltage fluctuation. The guide covers devices rated to medium voltage (1 kV5 kV). This device contains in general: an inverter, rectifier or DC converter, energy storage device, and coupling transformer. The device typically is connected in parallel with the network using a coupling transformer.

Keywords: coupling transformer, energy storage, inverter, parallel compensation, power electronics, power quality, sensitive loads, voltage control


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Designation: P1676

Sponsor: IEEE Power Engineering Society/Substations

Title: Guide for Control Architecture for High Power Electronics (1 MW and Greater) used in Electric Power Transmission and Distribution Systems

Status: New Standard Project

Technical Contact: Narain G Hingorani, Phone:+1 650 941 5240, Email:nhingorani@aol.com **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer-service@ieee.org.

History: PAR APP: Jun 09, 2005

Project scope: The scope of this project is to define and characterize control architecture for high power electronics from power semiconductor device levels to the power system level. This project covers the application of power electronics in the areas of Power Quality/Custom Power, Flexible AC Transmission Systems (FACTS), High Voltage DC Transmission (HVDC), Distributed Generation, Storage applications, with a power range from hundreds of kW to thousands of MW, but with emphasis on the 1 MW to hundreds of MW.

Project purpose: The purpose of this project is to define hierarchical control architecture, define various parameters/functions that need to be handled within each level and those that need to be communicated between the layers and their required speed levels. When the control functions of many different power electronic systems are investigated and evaluated, a significant degree of common functionality emerges, irrespective of the target application. Using the concept of system levels (or layers), it is possible to define a hierarchical control architecture for the high power electronics based systems. In order to exploit commonality, it is important to consider the division of the control architecture into distinct layers in high power electronics applications. These layers include: System control level that determines the overall mission of the system, converter control level responsible for maintaining overall functions of the power electronics, converter control level with the many common functions of converters irrespective of the final applications and the device level control including the functioning of the power electronics system and its devices. These levels have different communication speed requirements.


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Designation: C57.12.37-2006

Sponsor: IEEE Power Engineering Society/Transformers

Title: Standard for the Electronic Reporting of Distribution Transformer Test Data

Status: Approved Publication of IEEE

Technical Contact: Richard Hollingsworth, Phone:601-422-1105, Email:rhollin@howard-ind.com **For non-technical questions, including pricing, availability and ordering, please contact IEEE Customer Service at 1-800-678-IEEE (in the U.S.and Canada); or 1-732-981-0060 (outside the U.S. and Canada); or send a detail email to customer- service@ieee.org. To purchase this standard, or for pricing and availability go to http://shop.ieee.org/ieeestore and type in the standard number.

History: PAR APP: Nov 01, 2001, BD APP: Mar 30, 2006

Project scope: This standard provides a basis for electronic reporting of transformer test data on liquid immersed distribution transformers, specifically, those defined in the ANSI C57.12.2X standards series. This standard defines the standard set of test data to be reported and the format in which it is to be reported when electronic reporting of test data is specified. In addition, it defines an extended set of data for those users who have a need for data. This revision will modify the Title of the Standard to specifically designate it as being for 'Distribution' Transformers. The omission of 'Distribution" in the title could cause confusion for the user. While the Scope in the current Standard makes this clear, the title is not as specific as the Scope.

Project purpose: The purpose of this standard is to define standard methods of reporting and communicating transformer test data in order to allow users and producers to design computer based systems for preparing, communicating, and storing test data. The standard includes test data content, test data format, and test data communications methods. This review for revision will address new technology and related changes in data communication and storage means. This revision will address and investigate the inclusion of various data items which were considered for, but not included in, the current standard. Also, this revision will address the possibility of expanding the list of data elements to include additional data items of interest to users doing Power Quality and Thermal Evaluation work. Changes in currently used computer software will allow consideration of other possible data formats.


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