Gene Henneberg, ChairRemedial Action Scheme Reliability Subcommittee

RASRS Report to Operating CommitteeMarch 25-26, 2015Salt Lake City, Utah

2

RASRS Scheme Reviews(11 Entities, 37 schemes)

LADWP Gonder Cross trip WAPS was approvedOwens Valley WAPS presentation for information (some reliability issues); future presentation planned for modificationsScattergood accepted as a LAPSHarbor accepted as a LAPS

 WAPA Waterflow followup, COI RAS islanding. Action item review from

October web meeting review of out of step tripping backup to COI RAS islanding accepted. 

PacifiCorp

 Lakeside 2 LAPS Modification accepted as a LAPS

3

RASRS Scheme Reviews

BC Hydro

G.M. Shrum Area Gen Shedding RAS approved with one action itemMeridian RAS controller removal approved with one action itemCheekeye Area was accepted as a LAPSSeveral action items from earlier reviews were completed: RAS maintenance intervals, Mica Gen shed, RAS Arming proceduresAutomatic Undervoltage Load Shed (AUVLS) approved reclassification from UVLS to RAS (Safety Net) South Interior West RAS consolidates three existing RAS in one for reporting purposes.North Coast RAS, Stage II modifications were approved with 3 action items.

PG&E Pittsburg-Lakewood WAPS approved with one action itemOakland J accepted as a LAPS Fresno scheme action item submittal was approved

4

RASRS Scheme Reviews

SDG&E TL23040 IV 500 kV confirmed as a WAPS; December 10 review. modifications were discussedImperial Valley Bank 80 LAPS approved in July; action item for generator shedding for loss of other IV banks fulfilled at the November meetingEast County Bank 83 (ECO) islanding scheme does not meet RAS definition, so could not vote on reliability impacts 

IID Path 42 RAS progress report, information only at this time 

IPC 

Midpoint C232 Bypass LAPS removal was accepted

5

RASRS Scheme Reviews

SCE Five Intertie Overload scheme removals:PGE: Midway – Vincent 500 kV No. 1 and 2 Midway Whirlwind 500 kVLADWP: Lugo – Victorville 500 kV Eldorado – McCullough 500 kV Laguna Bell – Velasco 220 kVSDG&E: San Onofre 220kVIID: Devers – Coachella Valley 220 kV (line no longer exists)Modified Devers RAS (include Blythe Solar and McCoy gen trippingColorado River RAS approvedValley Direct Load Trip RAS removal approvedSantiago RAS removal approved 

AESO 

HVDC Converter LAPS two schemes approved

6

RASRS Scheme Reviews

BPA Hot Springs Line Loss Logic (LLL) was a follow up item to an earlier presentation and was approved.Mullan Wind Generation Dropping needed to be added to six existing algorithms. It was approved.PortlandGE Carty Gen Drop and AGC suspend additions were approved.ICLTS scheme has not been armed in many years and is no longer needed. Removal was approved.Big Hanaford Gen drop. The plant is being decommissioned so the removal from several algorithms was approved.

PNM ICLSS WAPS (was Safety Net) is being modified due to looping two of the pertinent 345 kV lines into Rio Puerco switching station. Modifications were approved.

7

NERC RAS Definition

NERC BOT approved the proposed new RAS definition in December and filed it with FERC on February 3.• Don’t let the 3698-page filing intimidate you. It

includes all the comments, responses, and standards revisions.http://www.nerc.com/FilingsOrders/us/Pages/NERCFilings2015.aspx

• The actual definition is a little over one page (shorter than BES!)

8

NERC RAS Definition

There is a broad general RAS definition, but . . .

. . . many more exceptions than the old SPS/RAS definition.

. . . and retire SPS.

9

NERC RAS Standards

The RAS drafting team is in the middle of the first draft, with tentative posting in May.

10

NERC RAS Standards

Major proposed items (new PRC-012-2):• Reviews required for new and modified RAS• Reviewing entity is the RC• 5 year evaluations by TP—any deficiencies require a

CAP• Owner must review all RAS operations for correctness

—any functional modifications require a CAP• Any RAS CAP must be implemented• RAS database maintained by RC• RAS owners must share modelling data with other

entities that have a reliability need

11

NERC RAS Standards

Maintenance and testing (maybe a revised PRC-005-x):• Add RAS controllers• Pretty much all other components of

RAS are already in PRC-005

12

Next RASRS Meeting

April 6-8, 2015, Salt Lake City, UT (less than two weeks away!)• Review about 30 schemes from 10

members (agenda is posted)• Other RASRS business (such as the

new NERC definition and draft standard)

Remedial Action Scheme

Reliability Subcommitte

e

March 2015

Questions?