Project 2010-13.1 Phase 1 of Relay Loadability: Transmission
​​​​​​Related Files

Status: 
The standard and implementation plan and the VRFs and VSLs were approved by the NERC Board of Trustees on March 10, 2011.
 
Background:
As the ERO, NERC must address all directives in Orders issued by FERC.  On March 18, 2010 FERC issued Order No. 733 which approved Reliability Standard PRC-023-1 – Transmission Relay Loadability, and also directed NERC, as the Electric Reliability Organization (“ERO”), to develop certain modifications to the PRC-023-1 standard through its Reliability Standards development process, to be completed by specific deadlines. Attachment 1 to the SAR contains the directives and associated deadlines. The Order also directed development of two new Reliability Standards to address issues related to generator relay loadability and the operation of protective relays due to power swings. The standards-related directives in Order 733 are aimed at closing some reliability-related gaps in the scope of PRC-023-1.
 
This SAR’s scope includes three standard development phases to address the standards-related directives in Order No. 733 directives. Phase I is focused on making the specific modifications to PRC-023-1 that were identified in the order; Phase II is focused on developing a new standard to address generator relay loadability; and Phase III is focused on developing requirements that address protective relay operations due to power swings.
  
​Draft ​Actions ​Dates Results ​Consideration of Comments
 
​Filing to FERC
 
Supporting Document:
 
​Request to Approve ​Filed 4/13/2011
Approved 3/15/2012
 
​Board of Trustees
 
Supporting Document:
 
​Request to Adopt ​3/10/2011 ​Adopted

 

​Draft 4

PRC-023-2

 
Implementation Plan
 
Recirculation Ballot 
 
 
02/24/11 - 03/07/11​
 

 
Draft 3
 
PRC-023-2
 
Implementation Plan
 
Supporting Materials:

Successive Ballot

Info>>

​01/24/11 - 02/14/11 Consideration of Comments>>
Non-Binding Poll
 
​01/24/11 - 02/13/11 Non-Binding Poll Results>> Consideration of Comments>>
Draft 2
 
PRC-023-2
 
Implementation Plan
 
SAR for Relay Loadability Modifications and Additions
 
Supporting Materials:
 
Intial Ballot
 
 
12/07/10 - 12/16/10
(closed)​

Summary>>


Ballot Pool
 
 
 
​11/01/10 - 12/02/10
(closed)
 
45-day Formal
Comment Period
 
 
 Submit Comments>>​
 
11/01/10 – 12/16/10
(closed)​
Comments Received>> Consideration of Comments>>​​
 
Supporting Materials:
 
Comment Period
 
9/23/10 - 10/12/10
(closed)​
Comments Received>> Consideration of Comments >>
 
Draft 1
 
 
SAR for Relay Loadability
PRC-023-2
 
Supporting Materials:
 
Comment Period
 
 
​08/19/10 - 09/19/10
(closed)
Comments Received>> Consideration of Comments >>​