ERCOT Nodal Operating Guides - Section 3

Flashcards covering key vocabulary and concepts from Section 3 of the ERCOT Nodal Operating Guides, focusing on ERCOT and Market Participant Responsibilities.

Qualified Scheduling Entity (QSE)

An entity responsible for specific responsibilities to support ERCOT in the security and reliability of the ERCOT System.

Transmission Service Provider (TSP)

An entity responsible for specific responsibilities to support ERCOT in the security and reliability of the ERCOT System.

Direct Current Tie Operators (DCTOs)

An entity responsible for specific responsibilities to support ERCOT in the security and reliability of the ERCOT System (as of NPRR857 implementation).

Verbal Dispatch Instruction (VDI)

An instruction issued for Real-Time operations intended to change or preserve the state, status, output, or input of an element or facility of the ERCOT System.

Authorized Representative

A representative designated by each QSE or Resource Entity as defined in Protocol Section 2.1, Definitions.

Back-up control plan

A written plan submitted by each QSE to ERCOT by March 15 of each year to continue operation in the event the QSE’s scheduling center becomes inoperable.

Current Operating Plan (COP)

A plan submitted by QSEs in accordance with Protocol Section 3.9.

Ancillary Services

Services that Resources designated to provide must qualify with ERCOT prior to participation in the Ancillary Service market.

Corrected Unit Reactive Limits (CURL)

Establishes the reactive limits at the unit terminals that ERCOT Planning and ERCOT Operations, and TSPs will use for their studies.

Coordinated Testing

Reactive testing method that provides a greater amount of coordination with ERCOT and the TO, allowing testing impacts and potential adjustments to be studied in advance.

Non-Coordinated Testing

Reactive testing method where the Resource Entity informs ERCOT and the TO via their QSE at least two hours prior to the test.

Normal Rating

Technical limit for Transmission Facilities, enforced by ERCOT pre-contingency.

Emergency Rating

Technical limit for Transmission Facilities, enforced by ERCOT post-contingency if no RAP is available, with restoration to Normal Rating within two hours.

15-Minute Rating

Technical limit for Transmission Facilities, enforced by ERCOT post-contingency if an approved RAP is available, with RAP implementation to reach Emergency Rating within 15 minutes and Normal Rating within two hours.

Vegetation Management Program

A program each transmission owner must have, outlining procedures to prevent transmission line contact with vegetation.