Line Protection Subcommittee

Scope

Investigate and report on the relaying techniques and systems used for transmission and distribution (T&D) line protection. Develop statistics and recommend protection practices for improving line relaying performance. Develop and maintain standards for line protection.

Chair: Bruce Mackie

Vice Chair: Meyer Kao

Working Groups

WG	Name	Chair	Vice Chair	Scope
D28	(PC37.230): Guide for Protective Relay Applications to Distribution Lines	Brian Boysen	Claire Patti	To review and revise C37.230-2007, “Guide for Protective Relay Applications to Distribution Lines” to correct errors and address additional distribution line protection related topics.
D29	Tutorial on Setting Impedance-Based Power Swing Blocking and Out-Of-Step Tripping Functions on Transmission Lines	Kevin Jones	Normann Fischer	Create a tutorial on setting impedance-based power swing blocking and out-of-step tripping functions related to transmission line applications. Specific relay settings examples will be provided. Other methods of detecting out-of-step conditions that exist will be summarized and referenced, but will not be discussed in detail.
D30	Tutorial on Application and Setting of Ground Distance Elements on Transmission Lines	Karl Zimmerman	Ted Warren	Write a tutorial on factors affecting the application and setting of ground mho and quadrilateral distance elements on transmission lines.
D34	Coordinate with IEC 60255-187-3 Functional Specification for Line Current Differential	Normann Fischer	Joe Mooney	Coordinate with IEC 60255-187-3 (functional specification on line current differential requirements) and provide feedback.
D35	Evaluation of Transmission Line Pilot Protection Schemes	Rick Gamble	Brandon Lewey	Prepare a technical report to the line protection subcommittee to evaluate advantages and disadvantages of common transmission line pilot protection schemes, including POTT, DCB, DCUB, and line current differential. The schemes will be evaluated in terms of speed, sensitivity, dependability and security based on the design and configuration of transmission lines and system topology. A limited number of example systems will be evaluated.
D37	Impact of Series Compensation on Transmission Lines	Mike Kockott	Luis Polanco	Create a report the impact of series compensation on transmission lines.
D38	Impact of High SIR on Distance Relaying	Chris Walker	Greg Ryan	Investigate the need for a working group on the Impact of High SIR on Distance Relaying.
D39	Revise C37.104 IEEE Guide for Automatic Reclosing of Circuit Breakers for AC Distribution and Transmission Lines	Manish Patel	Brandon Armstrong	To determine if a working group is needed to review C37.104 IEEE Guide for Automatic Reclosing of Circuit Breakers for AC Distribution and Transmission Lines
D41	Engagement with Industry Activities Related to Line Protection Due to Increasing Penetration of Inverter-based Sources	Ilia Voloh	Evangelos Farantatos	To monitor and collect line protection events, engage with other industry activities, inform and provide guidance to line protection subcommittee to improve line protection response when connected to inverter-based sources.
D42	Revise C37.113, Guide for Protective Relay Applications to Transmission Lines	Jeff Barsch	Rick Gamble	Revise C37.113-2015, IEEE Guide for Protective Relay Applications to Transmission Lines.
DTF43	Investigate the need to update PSRC Report, Effect of Distribution Automation on Protective Relaying	Bruce Mackie		Determine if there is a need to update the PSRC report, Effect of Distribution Automation on Protective Relaying.
D44	Revise C37.114, IEEE Guide for Determining Fault Location on AC Transmission and Distribution Lines	Sebastien Billaut	Karl Zimmerman	Revise C37.114, IEEE Guide for Determining Fault Location on AC Transmission and Distribution Lines.
DTF45	Investigate the need to create report on reduction of forest fire hazard	Bruce Mackie		Determine if there is a need create report on reduction of forest fire hazard.

Name

Chair

Vice Chair

Scope

D28

(PC37.230): Guide for Protective Relay Applications to Distribution Lines

Brian Boysen

Claire Patti

To review and revise C37.230-2007, “Guide for Protective Relay Applications to Distribution Lines” to correct errors and address additional distribution line protection related topics.

D29

Tutorial on Setting Impedance-Based Power Swing Blocking and Out-Of-Step Tripping Functions on Transmission Lines

Kevin Jones

Normann Fischer

Create a tutorial on setting impedance-based power swing blocking and out-of-step tripping functions related to transmission line applications. Specific relay settings examples will be provided. Other methods of detecting out-of-step conditions that exist will be summarized and referenced, but will not be discussed in detail.

D30

Tutorial on Application and Setting of Ground Distance Elements on Transmission Lines

Karl Zimmerman

Ted Warren

Write a tutorial on factors affecting the application and setting of ground mho and quadrilateral distance elements on transmission lines.

D34

Coordinate with IEC 60255-187-3 Functional Specification for Line Current Differential

Normann Fischer

Joe Mooney

Coordinate with IEC 60255-187-3 (functional specification on line current differential requirements) and provide feedback.

D35

Evaluation of Transmission Line Pilot Protection Schemes

Rick Gamble

Brandon Lewey

Prepare a technical report to the line protection subcommittee to evaluate advantages and disadvantages of common transmission line pilot protection schemes, including POTT, DCB, DCUB, and line current differential. The schemes will be evaluated in terms of speed, sensitivity, dependability and security based on the design and configuration of transmission lines and system topology. A limited number of example systems will be evaluated.

D37

Impact of Series Compensation on Transmission Lines

Mike Kockott

Luis Polanco

Create a report the impact of series compensation on transmission lines.

D38

Impact of High SIR on Distance Relaying

Chris Walker

Greg Ryan

Investigate the need for a working group on the Impact of High SIR on Distance Relaying.

D39

Revise C37.104 IEEE Guide for Automatic Reclosing of Circuit Breakers for AC Distribution and Transmission Lines

Manish Patel

Brandon Armstrong

To determine if a working group is needed to review C37.104 IEEE Guide for Automatic Reclosing of Circuit Breakers for AC Distribution and Transmission Lines

D41

Engagement with Industry Activities Related to Line Protection Due to Increasing Penetration of Inverter-based Sources

Ilia Voloh

Evangelos Farantatos

To monitor and collect line protection events, engage with other industry activities, inform and provide guidance to line protection subcommittee to improve line protection response when connected to inverter-based sources.

D42

Revise C37.113, Guide for Protective Relay Applications to Transmission Lines

Jeff Barsch

Rick Gamble

Revise C37.113-2015, IEEE Guide for Protective Relay Applications to Transmission Lines.

DTF43

Investigate the need to update PSRC Report, Effect of Distribution Automation on Protective Relaying

Bruce Mackie

Determine if there is a need to update the PSRC report, Effect of Distribution Automation on Protective Relaying.

D44

Revise C37.114, IEEE Guide for Determining Fault Location on AC Transmission and Distribution Lines

Sebastien Billaut

Karl Zimmerman

Revise C37.114, IEEE Guide for Determining Fault Location on AC Transmission and Distribution Lines.

DTF45

Investigate the need to create report on reduction of forest fire hazard

Bruce Mackie

Determine if there is a need create report on reduction of forest fire hazard.

Power System Relaying and Control Committee

PSRC