MINUTES
RELAYING PRACTICES SUBCOMMITTEE
May 12-15, 2008, Kansas City , MO, USA
Chair: T. S. Sidhu
Vice-Chair: R. Beresh
Webmaster: M.R. Dadash Zadeh
This page was last updated on June 17, 2008 by Mohammad
 
Introduction:
The Subcommittee met on May 14, 2008 with 28 members and 43 guests.
  • Approval of previous I minutes from San Antonio 2008 approved
  • It was mentioned that a WG can only meet for two sessions before a PAR is applied for. If it takes longer than two sessions the WG must be disbanded and re-formed.
 
I1: Understanding Microprocessor-Based Technology Applied to Relaying
Chair: M.S. Sachdev
Vice-Chair: Ratan Das
Output:
PSRC Report

The Working Group met at 9:30 AM on May 13, 2008 in Kansas City; five members and two guests were present.  The Chair reported that the balloting of the report has been successfully completed in the WG.  Thirteen approved and approved with comments ballots have been received.  The comments are editorial in nature.

The Chair will make the needed editorial changes in the report and will submit the report to the Subcommittee Chair in a couple of weeks time.

Next meeting:  The WG does not plan to meet during the September 2008 PSRC meeting.

I2: Terminology Usage Review
Chair: M. J. Swanson
Vice-Chair: Barb Anderson
Output:
Definitions for C37.100 and IEEE Std. 100

The I2 working group met at 11:00 am on Tuesday, May 13, 2008 with ten members. Mal Swanson chaired the meeting.

Minutes from the last meeting were approved.

The terms in Group #6 (DND6058) was revised and approved by the working group,

C37.234: The working group approved one new term from this document, which will be added to Group #6. Oscar will discuss another term, end-fault Protection, with the Chairman to see if this term should be blind spot protection. A diagram may help clarify the term.

PC37.105: The working group revised one term that will be added to Group #6.

C4 Working Group paper: Roger Whittaker revised definitions from this document. Work on these terms will continue at the September meeting.

 Barb Anderson will have the newest revision of Group #6 added to the website.

Barb also presented a comparison of terms that had been submitted as approved by PSRC (Groups 1 through 3) and those that have been published either in C37.100 Switchgear Dictionary or IEEE 100-7th Edition. The group decided to delete several that have been adequately addressed in IEEE 100 and to submit the remaining terms to the Chairman of C37.100. The files on the website will be changed accordingly.

 The meeting was adjourned at 12:20 pm.
I3: Relay Functional Type Testing
Chair: J. Jodice
Vice-Chair: B. Gwyn
Output:
Report

Assignment

Collect a series of functional tests that could show a particular problem related to system events. Individual problems will be submitted by members of the Working Group and a test report developed for that issue. The individual test reports will then be collated into a Working Group report.

 Working Group Assignments

 The following people presented test cases:

  • Jeff Pond: A misoperations of a Directional Comparison Blocking Scheme on a current reversal during a fault. Parallel line set up

  • Steve Turner: Model of a two winding transformer and differential protection

  • Drew Welton: Simple event on a feeder protection. 52A contact did not transition due to a problem in the breaker. Breaker failure initiated. Insufficient current to drop targets on all phases faulted.

  • Simon Chano: Degraded performance of a distance relay due to low or high frequency.

  • Tony Giuliante: Benefits of measuring input values while testing electromechanical relays.

  • Juergen Holbach: Using data from the 2003 Blackout to test Out of Step protection schemes.
Actions:
  • Drew Welton: Submit Straw Man template of a Functional Test report so that all reports are consistent. June 2008

  • All with assignments: Produce draft test report to template by end of August 2008 and submit to Bryan Gwyn
Note
  • An overall classification will be developed at the next meeting categorizing Functional Test. E.g. Parallel lines, Transformers. Test approaches can then be developed for each category.

  • Bob Beresh, Simon Chano and Carl Zimmerman will present cases at the next meeting.

  • Title of report could be changed to Functional Protection Scheme testing
I4: IEC Standards Advisory
Chair: E. A. Udren
Vice-Chair: M. M. Ranieri
Output:
Comments and votes to USNC of IEC on TC 95 (Measuring Relays) Standards, projects and drafts.  Reports to PSRC on IEC standards development.

The WG met twice on May 13 and 14 with 6 members and 1 guest.  We discussed the following TC 95 CDV documents requiring a vote from USNC:

  • 95/225/CDV - IEC 60255-11 Ed.2: Measuring relays and protection equipment - Part 11: Voltage dips, short interruptions, variations and ripple on auxiliary power supply port - The test suite now includes checks for a full range of auxiliary power supply quality problems, including short interruptions to zero or partial voltage, and longer interruptions.  Ripple of 15% is specified at power frequency or twice power frequency.  The test includes gradual ramp up and down of supply, and reversal of supply polarity.  Depending on the problem, the relay must ride through the disturbance with no functional impact, or temporarily cease operation and resume when the supply is restored.  The WG decided to cast a favorable vote, with a request for declaration by manufacturers of how long temporary is (typically, relay reboot time).

  • 95/231/CDV - Measuring relays and protection equipment - Part 1: Common requirements Major differences from C37.90.  Vote in September more review needed by July 21.  We found that Clause 5.7 on inrush does not specify source impedance, so we will ask them to change this.

  • 95/230/FDIS IEC 60255-26, EMC Requirements - For RF immunity and ESD tests, IEC has less demanding compliance levels than IEEE C37.90.2 and .3.  For RF, IEC requires 10 V/m modulated, while IEEE calls for 18 V/m modulated & 35 V/m unmodulated field strength.  The IEC test is thus not a challenge for manufacturers testing to IEEE levels, and the US has consistently viewed it as inadequate and has voted negatively.  We cast a vote against this final standard with explanation.
  • 95/233/RVD on FDIS IEC 60255-22-4, Fast Transient Test We reviewed national committee comments on recent final draft, and only a few of over 40 US comments were accepted.
Not reviewed at the meeting were TC 57 WG 10 documents for IEC 61850, Edition 2:
  • Part 7-1: Basic communication structure for substation and feeder equipment - Principles and models - Revision project initiated and CDV circulated with vote due in October.
  • Part 7-4: Basic communication structure - Compatible logical node classes and data classes CDV with vote due in August.
  • Part 7-2: Basic information and communication structure - Abstract communication service interface (ACSI) Comments on CD circulated; new CDV circulated with vote due in October.
I5: Schematic Representation of Power System Relaying
Chair: Kevin Donahoe
Vice-Chair: Dave Zinn
Output:
Report
The Working Group met for a single session with 9 members and 10 guests totaling 19 attendees on Wednesday, May 14, 2008.

The working group agreed that our output would be a report.

Reviewed minutes and the group assignment from the January 2008 meeting presented at the last I Subcommittee meeting.

Several members submitted examples of schematics and two members gave presentations:  Thanks goes to Ken Birt & Dean Miller.  Discussion ensued that got into merging nontraditional information on documents being used by internal customers of the utility / company.

More members came forward to present documents to the working group developed at their company.  This will be done at the September meeting.  Attention was drawn to the fact that C37.2 is close to publication & C16   Relay Scheme Design Using Microprocessor Relays) is currently meeting addressing topics related to the I5 Schematic representation Working Group.

Next meeting Karl Zimmerman, Jim OBrien and Jim Platt are scheduled to give presentations.

David Zinn is the vice chair for I5.

WG will need a meeting room accommodating 25 along with a projector.
The WG has completed its task and was disbanded at the Subcommittee meeting.
I8: Guide for Application of Optical Currrent & Voltage Systems
Chair: Harley Gilleland
Vice-Chair:Bruce Pickett
Output:
IEEE Guide

The meeting was called to order by the Chair Harley Gilleland. There were 10 members and 3 guests. All members and guest were introduced minutes from the previous meeting were reviewed. Details of the steps for getting a PAR now that the preparation is complete and the need for developing the Guide were covered. The other discussions included an update of changes in the Team Leaders that need to be filled Brian Mugalian accepting the Leadership of the new words tracking a report by Don Parker on training plus details on the strategy for using the PSRC Core group and electric utilities with experience in optical sensor technology for developing the Guide.

I9: Revision of C37.105 - Standard For Qualifying Class 1E Protective Relays And Auxiliaries For Nuclear Power Generating Stations
Chair: Sahib Usman
Vice-Chair: Roy Ball
Output:
Revision of C37.105
Members                                                               Guests
 Sahib Usman                                        Lisa Perry
Jeff Burnworth                                      Hasnain Ashrafi
Mario Ranieri
Marie Nemier
  1. The request for PAR extension has been approved by IEEE SA. It is extended to December 2009.

  2. The WG discussed the status of the resolution of the negative comments.

  3. All of the negative comments resolved so far, the revised Tables 2 &3, and the text changes have been incorporated into the latest Draft D10-7.

  4. The only remaining negative comments to be resolved are those from Jim Parello. Marie Nemier has been tasked to discuss with Jim and resolve the comments. She will incorporate the resolution into the updated draft and re- name it as Draft D10-8.

  5. The WG agreed that the current version can be issued for re-balloting.
I10: C37.98-1987 - Standard for Seismic Testing of Relays
Chair: M. Nemier
Vice-Chair: M. Bajpai
Output:
Revision of IEEE Standard C37.98
The working group met on Tuesday, May 13. The WG continues to work on the resolution of outstanding issues and will meet in Vancouver.
I14: Revision of C37.2-1996, Device Function Numbers
Chair: John Tengdin
Vice-Chair: D. Holstein
Output:
Revision of Standard C37.2-1996 joint with Substation WG C5

The working group met on May 13 with six members and four guests present.

The balloting is complete, and the document is on the RevCom agenda for its June 08 meeting. There were 203 people who joined the balloting body. After three Recirculation ballots, there was a 98% approval with two unresolved negative ballots. In addition to the normal three PES Technical Committees (PSRC, PSCC & Substations), the IAS Power System Protection Committee and its Rural Electric Power Committee, and the Rail Traction Standards Subcommittee members participated in the balloting.

Assuming that the document is approved by IEEE SA, the final steps will be to publicize the substantial revisions to this standard first issued as AIEEE #28 in 1928. This revision adds seventeen new functions (Device 16 Communications Device) and sixteen acronyms. A poster session paper on the revisions was presented at the IEEE T&D Expo in Chicago last month. Mel Olken has agreed to include an article in Power & Energy magazine once the standard is published. An abstract has been submitted to Western Protective Relay Conference for its October 2008 meeting. The IAS Power System Protection Committee and the Rural Electric Power Committee have been contacted for possible future presentations. Members of the I14 WG volunteered to submit presentation proposals to the Georgia Tech and the Texas A&M conferences.

Since this follow on activity can take place independent of PSRC meetings, we will not need a meeting room at the September PSRC meeting, but will give a report at the I Subcommittee Meeting.

I15: Revision of C37.110, IEEE Guide for the Applications of Current Transformers Used for Protective Relaying Purposes
Chair: G.P. Moskos
Vice-Chair: B. Jackson
Output:
Revision of IEEE C37.110-1996
May 12-15, 2008 Meeting

Working Group I15 did not meet at this meeting. The IEEE SA Standards Board approved the standard on December 5, 2007. IEEE Standard C37.110 -2007 was published on April 7, 2008. Beginning at September 2008 meeting, the working group will meet to start on the Summary Paper.
I17: Trends in Relay Performance
Chair: W.M. Carpenter
Vice-Chair: J.D. Wardlow
Output:
Periodic Reports to Subcommittee

The working group did not meet.

I18: Anomaly Checks for Relay Settings
Chair: Peter McLaren
Vice-Chair: M. Nagpal
Output:
Report

The WG met for a single session with 7 members and 14 guests

 The chairman circulated the draft questionnaires which had been prepared by several of the committee members.  The meeting only had time to consider the questionnaire being aimed at utilities.  A lively and informative discussion took place with several attendees recounting particular experiences germane to the aims of the WG.  Additions and changes were made to the draft which will be updated for the September meeting.  Discussion of the questionnaire for manufacturers will take place at the September meeting.

The chairman invited attendees to send him any further suggestions for either of the questionnaires before the next meeting.

 The WG will meet in September for a single session and will require a room to seat 20 and a computer projector.
I19: Protective Relaying and Redundancy
Chair: S. Ward
Vice-Chair: B. Gwyn
Output:
Report to the main committee

Assignment: Produce a special report addressing redundancy considerations for relaying.

The Working Group met for a single session with 15 members and 20 guests in attendance on May 13, 2008.

We had a presentation by Bryan Gwyn for the NERC draft that previously was to become a redundancy standard but now is being done as a reliability standard. Redundancy requirements are addressed by NERC but are performance based.

It was decided that for now we will keep a summary of the NERC draft for reference is our report.

The report has had good progress and is about 75% complete. A few late contributions will be incorporated in Draft 4a that will be sent out to all members with the minutes. Outstanding assignments are due to the Chair by August 15.

We expect to start the review of the report in September.

The change of the title of the report, suggested by the working group members, to "Redundancy Considerations for Protective Relaying Schemes" was approved by the Subcommittee.

The working group will meet in May for a single session, 30 people, with computer projector, to continue work on the report.
I20: Revision of C37.90.1 SWC Tests
Chair: Tom Beckwith
Vice-Chair: Tom Tennille
Output:
Revision of C37.90.1 SWC Tests

The third meeting of the Working Group (WG) I20 met on May 13, 2008 in Kansas City, MO in a single session with 10 Members, including 3 new members.

 The Minutes of Meeting #2 on January 8, 2008 were approved as submitted.

 The PAR for the working group was approved on March 27, 2008 by the IEEE-SA Standards Board and work must be completed by December 31, 2012.

Mario Ranieri, Jeff Burnworth and Steve Turner will review any revisions to IEC Standards that were referenced in C37.90.1-2002, Annex E. Jeff will prepare a presentation on how Annex E is structured for the next meeting of the working group. This will include briefing the working group on any IEC Standard changes that may have an effect on the working groups task. Mario will create a table similar to the one found in C37.90 to identify the relationship of the appropriate IEC Standards to C37.90.1. Tom Beckwith will procure copies of the applicable IEC Standards.

Bob Beresh is a member of P1613-2003 Environmental and Testing Requirements for Communications Networking Devices in Electric Utility Substations and will keep that group apprised of I20 activities, so that changes can be coordinated between the two groups.

 Tom Beckwith will coordinate with the Chairman of C57.15 IEEE Standard Requirements, Terminology, and Test Code for Step-Voltage Regulators, that references C38.90.1-2002, to keep them informed of I20 activities.

 The working group reviewed the IEEE PC37.90.1 Draft 2 edits and discussed the justification of which documents appear in the Bibliography and References clauses. Mario mentioned that the latest 2007 Style Manual should be reviewed to verify this and other issues. Tom will email the new Style Manual to all working group members.

After the January meeting, an Explanation was submitted in response to a Request for Interpretation of C37.90.1-2002. Tom Beckwith will review the response and determine how Clause 8.2 Common mode tests and Clause 8.3 Transverse mode tests may be edited to improve clarity.

Mark Simon will revise the Note from Example 1 and 6 of Annex D and generally proofread Annex D.

Tom will separate and track changes from Draft 7 to the published 2002 version of C37.90.1.

Barb Beckwith mentioned that some of the terms appearing in Clause 3. Definitions of our standard are listed in The Authoritative Dictionary of IEEE Standards Terms, 7th Edition, but with some changes. She will make a further comparison for the September meeting.

Barb also will review the document for consistent usage of terms as defined in the Definitions and in Clause 7.

 Requirements for next meeting in September: Single session; 20 attendees; Computer Projector
 
Task Force Reports:
ITF1: Relay Services Letter Database
Chair: J. Jodice
Output:
Service Letter Database
I TF#1 met today briefly, with Tarlochan Sidhu, TW Cease, Tony Giuliante, and Mario Ranieri present.

There were no additional Manufacturer Advisories provided.

A request to re-establish a password to the Doble portal was receivedand has been communicated to the IT Manager at Doble.

The meeting adjourned with no further action.
ITF2: Practical aspects of Rogowski coil applications to relaying
Chair: L. Kojovic
  
Output:
TBD

The Task Force met for a single session with 6 members and guests. It was decided that the TF ask the I subcommittee to become a WG and that the TF would meet in Vancouver to work out a scope.

ITF8: Revision to Guide for Grounding of Instrument Transformers
Chair: B. Muligan
Output:
Revision to Guide
The Task Force ITF8, Revision of C57.13.3 - Guide for Grounding of Instrument Transformer Secondary Circuits and Cases, met in Plaza, Marriott Country Club Plaza, Kansas City, MO on May 14, 2008.  Seven members and two guests were present.

Two staff members from IEEE were our guests:  Jennie Steinhagen and Lisa Perry.  They were interested in observing the start up and planning of a Task Force as part of the standards creation and review process.

The Task Force discussed a plan to review the relevant IEC standards related to the grounding of instrument transformer secondary circuits and cases.  Jennie volunteered to look up an existing document that compares IEEE and IEC standards as a starting point.  The Chair also asked folks to perform a search to find any other relevant documents.  Vittal Rebbapragada who did not attend the May meeting volunteered at the January 2008 meeting to provide a summary of IEC documents for review.  When the comparison list and search by the Task Force members is complete, the Chair will assign each member a group of IEC standards to study.  At the September 2008 meeting, the Task Force will review the relevant IEC documents to discuss and determine where to include them in the guide.  Jennie will be able to provide Word document formats of C57.13.3-2005 and any IEC standards of interest to the Task Force to facilitate the creation of a draft of the guide.  The Task Force will need one or two more sessions to develop an outline of work, before requesting the change to become a working group.

Bruce Magruder volunteered to be Vice-Chair of the Task Force.

The Task Force will meet in Vancouver B.C. in September to create an outline of what sections of the guide can be revised to include the applicable IEC standards.  We will use the Wednesday 8:00 a.m. time slot, room for 25 people, and a computer projector.

At the conclusion of this business, the meeting was adjourned.
 
Liaison Reports:

Instrument Transformer Subcommittee

 Del Weers, I subcommittee liaison with Instrument Transformer Sub committee

The transformer committee met in April in Charlotte, NC

 The report on the Instrument Transformer subcommittee activity follows:

  1. The C57.13.1993, Instrument Transformer Standard has been reviewed, approved and balloted with only one comment to resolve.  It is at IEEE Hdq. for final review and printing.
    A working group is starting another review to consider a number of suggestion not included in the version now balloting.
  2. C57.13.5, Test Requirements for HV Instrument Transformers is being reviewed by a Working Group.

  3. The working group for the Optical Current and Voltage Sensing Systems Standard, P1601, has been completed
    The document is now in the balloting stage.

  4. A technical presentation was made on a method for verifying relaying CTs circuits are meeting accuracy limits for revenue metering.  There was a request that it be considered for addition to C57.13 standard.

    This brought a number of responses.  Examples follow:

  • C57.13 standards purpose is not suitable for this subject.

  • There may be other standards that are more applicable.  C57.13.1, Field Testing Relaying CTs standard was mentioned.

  • There are a number of other products and services that do this job not just this one.
Coordination Reports:
None to report .
Old business:
None to report .
New Business:
ITF2 requested that it be made a WG. The subcommittee members voted and approved this. ITF2 is now I6.
 
Respectfully submitted,
T.S. Sidhu, Chairman, Relaying Practices Subcommittee