C: System Protection Subcommittee

Chair: J. S. Thorp

Vice Chair: D. Novosel

The System Protection Subcommittee met on May 10, 2000 at 1:30 PM in Grand Rapids, Michigan.

WG C3 will alternate with "Ask the Experts" on Wednesday afternoon, beginning in September.

Task force CTF2 on “Protective Relaying and Power Quality” will became WG C2. The chairman is T.W. Cease and the vice-chairman is David Hart.

WG Reports:

C1: Software Models for Relays

Chair: P. G. McLaren

Vice Chair: K. K. Mustaphi

Established: 1995

Expected Completion Date: 1999

Output: IEEE Transactions Paper

The WG did not meet.

C3: New Technology for Transmission and Distribution Protection

Chair: A. P. Apostolov

Vice Chair: P. A. Solanics

Established: 1994

Expected Completion Date: 1999

Output: Report to Main Committee and IEEE Transactions Paper

WG met on May 9, 2000; 14 members and 42 guests were present.

One presentation was made at the meeting:

“Substation Process Bus” by Eric Udren, Cutler Hammer

There were very interesting discussions and comments on different aspects of the presentation.

Selection of topics for presentations at the September 2000 meeting will be made by the end of July 2000.

C6: Wide Area Protection and Emergency Control

Chair: M. Begovic

Vice Chair: D. Novosel

Established: 1996

Expected Completion Date: 2000

Output: Report to Main Committee

The Working Group met in a single session with 12 members and 12 guests in attendance. Two new members, Mr. Gustavo Brunello of GE, and Mr. David Hart of ABB, expressed interest in joining the Group as members and accepted contributing assignments. There was a lively discussion about the remaining (unfilled) items in the report outline, and several new contributions were assigned. There was some debate about the use of definitions of terms, especially related to load shedding; it was decided that an appropriately sized vocabulary of terms be added to the report as an appendix. It was also decided that a statistical analysis of NERC wide area disturbances be added to the report, both as an indication of relative importance of different types of protection and control, as well as a rationale for developing trends. Jim Thorp provided a very interesting quantitative insight into NERC wide area disturbances, indicating an almist linear relationship between the size and relative frequency of blackouts.

Next meeting: The WG will meet in September in a single session. Computer Projector needed.

C7: EMTP Applications to Power System Protection

Chair: D. Tziouvaras

Vice Chair: L. Kojovic

Established, 1997

Expected Completion Date: 1999

Output: Report to Main Committee

The WG did not meet.

The WG is in the process of obtaining permission from PES to present the EMTP tutorial during the PES Summer Meeting in Seattle, WA.

C8: Phasor-Based Models for Analyzing Relay Performance

Mike Meisinger, Chair

M. S. Sachdev, Vice Chair

Established, 1997

Expected Completion Date: 2002

Output: Transactions Paper

The Working Group met at 8:00 AM on May 10, 2000 in Ruby room, Amway Grand Hotel, Grand Rapids, MI. Ten members and ten guests were present.

The Chair distributed the revised outline of the paper that had been prepared by him in collaboration with the Vice Chair. Moh Sachdev briefly outlined the changes made in the outline and the rationale for making those changes. A brief discussion followed. The Working Group then decided that the revised outline met the objectives set by the Working Group.

Some sections of the paper were reassigned. All outstanding assignments are due before July 15, 2000. On receiving the drafts, the Vice Chair will incorporate them in the paper and will circulate the draft paper to the members before the September meeting.

C9: Underfrequency Load Shedding and Restoration

Chair: A. Apostolov

Vice-Chair: K. Behrendt

Established, 1999

Expected Completion Date: 2001

Output: Guide on the Application of under-frequency load shedding and restoration

The working group met on Tuesday, May 8th, with 20 members and 22 guests present. The PAR has been approved and the working group document has been assigned the number PC37.117. The working group reviewed the guide’s scope, purpose, and outline that were developed at previous meetings. Some writing assignments have been received. The outline, and writing assignments received were emailed to members for their information and review. The outline was reviewed further to identify any missing elements and clarify existing elements. Additional writing assignments were made. This information will also be posted on the working group website when that is available in the near future. New writing contributions will also be added to the web site as they are received. Writing contributions should be submitted at least one month before the next PSRC meeting to allow time for these contributions to be reviewed before the next meeting.

Notable additions and clarifications to the outline include:

· the need to address load shedding issues on lines and feeders with distributed generation

· the need to clarify and coordinate islanding protection versus under frequency load shedding

· the possible affects of utility unbundling (separation of genco, transco, and disco) on UF load shedding

· testing and maintenance practices

· the need to include a discussion of UF relay algorithms to the extent that they affect UF relay performance in load shedding and restoration schemes

Further discussion took place regarding document boiler plate. Any references should be included in the text body whenever used. They will be moved to a separate reference section when the document is finalized. A discussion of drawing programs indicated that VISIO is in most common usage. Al Darlington will be contacted about sharing his electrical symbols stencil set.

The scheduled completion date remains December, 2001. The working group expects to meet in single session at the next PSRC meeting, and needs a room for 40 with a projector screen.

C10: Effects on Changing Utility Environment on Protective Relaying

Chair: J. DeLa Re

Vice-Chair: R. Hunt

Established, 1999

Expected Completion Date: 2002

Output: Report to Main Committee

The Working Group met at 1:30 pm, Tuesday, May 9, 2000, in Room Emerald B with 26 attendees. The chairman distributed copies of last meeting minutes and presentation materials.

Five presentations were made by utility and manufacturing engineers to discuss and comment on the charges that the power industry deregulation is creating for protection engineers:

Tom Domin	PP&L Resources	USA
J. Rothwell	Wisconsin Electric	USA
Vahid Madani	Pacific Gas & Electric	USA
Daniel Karlsson	ABB	Sweden
Fernando Cobelo	ZIV Aplicaciones y Tecnologia, S.A.	Spain

A copy of the summary is included at the end of this report.

Assignments and Action Items

· Chair and Vice-Chair will write a summary of presentations to be distributed among WG members and interested guests.

· Chair and Vice-Chair will write the skeleton of a white paper to be circulated among the members and guests of the Working Group for inputs before our next meeting in Massachusetts.

· We request permission to conduct a survey among Utility Protection engineers. Chair and Vice-Chair will bring draft of survey to the September meeting.

Next meeting: For our next meeting, we need a room for 40 participants and a projection system to run PowerPoint presentations.

C11: Protection Issues during System Restoration

Chair: T. Sidhu

Vice-Chair: D. Tziouvaras

Established: 2000

Expected Completion Date: 2003

Output: PSRC Report

Assignment: To study relaying issues during system restoration following a major disturbance and suggest remedial measures.

The WG met on May 9, 2000, with 8 members and 21 guests in attendance. This was the first meeting of the Working Group. Demetrios Tziuvaras made a presentation on the WSCC major disturbances and restoration experiences. This was followed by a presentation from Simon Chano who described major disturbances and restoration experiences at Hydro Quebec. Some protection issues during restoration were identified. Demetrios Tziouvaras and Simon Chano will summarize their presentations and send it to the Chairman before the next meeting. Mohamed Ibrahim, Rai Marttila and Nash Kassam agreed to make presentations at the next meeting on the subject of relaying issues during restoration.

Next Meeting: A room for 30 participants, computer projector and overhead projector needed.

Task Force CTF2: “Protective Relaying and Power Quality”

The Task Force met in a single session with 34 participants. D. Novosel was chairing the session. Seventeen people volunteered as members. Constructive discussion resulted in a proposal to initiate the Working Group, “Protective Relaying and Power Quality”.

The following assignment was proposed:

This WG will address following:

· Provide overview on power quality issues related to protective relaying. Address standards/recommended practices related to power quality.

· Impact of protective relaying practices on power quality.

· Impact of power quality on protective relaying.

· Power quality monitoring functions in the relays.

It is proposed to start with the WG report. The Task Force proposed T.W. Cease to be a WG Chairman. T.W. Cease will select a vice-chair.

NERC Liaison Report to SC and Other Liason Reports

Nothing of significance to report.