Reliability Standards

Frequency Response (Project 2007-12)

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Status
The Standards Committee appointed a standard drafting team and the team is working on the first draft of a new standard.

Purpose/Industry Need
Frequency Response, a measure of an Interconnection’s ability to stabilize frequency immediately following the sudden loss of generation or load, is a critical component to the reliable operation of the bulk power system, particularly during disturbances and restoration.  The proposed standard’s intent is to collect data needed to accurately model existing Frequency Response.  There is evidence of continuing decline in Frequency Response in the three Interconnections over the past 10 years, but no confirmed reason for the apparent decline.  The proposed standard requires entities to provide data so that Frequency Response in each of the Interconnections can be modeled, and the reasons for the decline in Frequency Response can be identified.  Once the reasons for the decline in Frequency Response are confirmed, requirements can be written to control Frequency Response to within defined reliability parameters.