Gene Henneberg, ChairRemedial Action Scheme Reliability Subcommittee

RASRS Report to Operating CommitteeMarch 25-26, 2014Salt Lake City, Utah

2

RASRS Scheme Reviews(10 Entities, 24 schemes)

NV Energy

COI RAS Separation Scheme, Robinson Summit, addition approvedGonder OV RAS removal approvedGonder UV RAS removal approvedHumboldt UV RAS removal approved 

EPE El Paso EPE-1 UVLS RAS removal approved 

Port GE Port Westward Runback removal approved 

3

RASRS Scheme Reviews

BC Hydro South Interior East RAS Consolidation of previously reviewed schemes for Kootenay Canal, Seven Mile, Waneta Expansion, Arrow Lakes Hydro, Brilliant Expansion, most of 5L91 and 5L96 RAS. No change to hardware, studies or arming, just reporting. Consolidation accepted by RASRS.South Interior East RAS modification for Waneta Expansion approved with one action itemModicon 984 PLC Replacements at Ingledow and Nicola were approvedNorth Vancouver Island RAS accepted as LAPSMica GS RAS upgrades and modifications approved with one action itemNatal previous action item resolution approved 

4

RASRS Scheme Reviews

SRP Desert Basin RAS removal approvedRandolph LAPS modifications accepted as a LAPS 

PacifiCorpNorthwesternIdaho Power

Path 18 Transmission Limit Control (TRLC) RAS accepted as a LAPS 

5

RASRS Scheme Reviews

SCE Centralized RAS (CRAS), SCE provided an update to RASRS, approvals not required at this time.Modified West of Devers (WOD) RAS approved as WAPSMojave Desert RAS approved as WAPS with one action itemDevers RAS approved as WAPS with one action itemBlythe RAS update arming level, still a LAPS 

6

RASRS Scheme ReviewsBPA RAS Test Intervals Proposed test interval changes for

WAPS to target annual with a maximum of two years and for LAPS a target of 5 years with a maximum of 72 months (6 years). Accepted by RASRS. The following BPA scheme modifications were reviewed in closed session:West Side RAS controller and changes at Pearl and Keeler substations approvedJohn Day LLL (line loss logic) modifications were approvedGrizzley LLL modifications were approvedCaptain Jack LLL modifications were approved 

7

PRC-(012-014)-WECC-CRT-2

The revised criterion requires owners to track and report periodic assessments of schemes. This is a follow up to the September 8, 2011 disturbance.• Effective date January 1, 2014

8

WECC RAS Review Procedure

Revision to the RAS criterion also necessitates some minor revisions to the WECC Procedure to Submit a RAS for Assessment • Criterion Attachment B data• Periodic assessment review process

explanation• OC review/approval now!

9

WECC RASRS Charter

Significant Charter changes include:• Removed a specific percentage of

members present as a quorum requirement• Removed the Chair’s authorization to

“approve” new RASRS members in favor of “accepting” nominations of new members from WECC member’s OC representatives

• OC review/approval now!

10

WECC RASRS Member Skills

0

2

4

6

8

10

12

14

16

18

11

Good cooperation from WECC members for the annual database update in December• AESO “joined the party” with 39 schemes• A few other (mostly) thermal emulation

schemes added• More removals than new schemes reviewed

in 2013• Presently 267 schemes in the database

WECC RAS Database

12

RAS & Protection System Oversight Task Force (RPSOTF)

Task Force provides oversight of PCC/TSS MSRATF activities• Co-chairs: Don Watkins, Dave Angell• Membership drawn from:o RAS Reliability Subcommitteeo Relay Work Group o Technical Studies Subcommitteeo WECC and RC Staffo Technical Support, Standards, and others

13

Modeling SPS & Relays Adhoc Task Force

The MSRATF is organized under TSS (and PCC), Joe Seabrook, chair:•RAS modeling group•Relay modeling group •Contingency definition group

14

Modeling SPS & Relays Adhoc Task Force“Big picture” objective is to develop and use contingency, relay, and RAS models as part of the Base Case Coordination System (BCCS), including models for unbalanced faults, accessed via a common data format from any of the four major software vendors’ programs.

15

Modeling SPS & Relays Adhoc Task ForceSpecifications for Power Flow and Stability models already approved by MVWG:• RAS models• Phase Relays: Overcurrent,

Directional, Distance• Ground and OOS Relays: Future• Node-Breaker topology to be

adopted

16

Peak Reliability and RAS

Peak Reliability (the RC) has been developing RAS models to include in their EMS models. RASRS is discussing database and collection coordination to minimize the number of separate data requests to WECC members and align both the RASRS data and the RC data to be collected.

17

NERC SPS/RAS Standards

NERC has a new drafting team to write a new SPS definition and related standards. Among the ten members are four from WECC:• Gene Henneberg (NV Energy, Chair)• Amos Ang (SCE)• Davis Erwin (PG&E)• Hari Singh (Excel)

18

NERC SPS/RAS Standards

There will be lots of chances for industry comment, but . . .

Please provide any informal feedback to the drafting team, especially on the SPS/RAS definition, sooner rather than later.

19

NERC SPS/RAS Definition

Example SPS Exclusion: Schemes to protect against SSR, which might include:• Local SSR filters• Torsional Stress Relay• Critical contingency element

monitoring and mitigation

20

Next RASRS Meeting

April 7-9, 2014, Salt Lake City, UT (two weeks away!)• Review schemes from members•Other RASRS business

Remedial Action Scheme

Reliability Subcommitte

e

March 2014

Questions?