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Protection and Control

PRC-006-SERC-02:Automatic Underfrequency Load Shedding Requirements

Purpose

To establish consistent and coordinated requirements for the design, implementation, and analysis of automatic underfrequency load shedding (UFLS) programs among all SERC applicable entities.

Applicability

4.1    Planning Coordinators

4.2    UFLS entities shall mean all entities that are responsible for the ownership,

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PRC-025-2: Generator Relay Loadability

Purpose

To  set  load-responsive  protective  relays  associated  with  generation Facilities at a level to prevent unnecessary tripping of generators during a system disturbance for conditions that do not pose a risk of damage to the associated equipment.

Applicability

4.1.         

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PRC-026-1: Relay Performance During Stable Power Swings

Purpose
 To ensure that load-responsive protective relays are expected to not trip in response to stable power swings during non-Fault conditions.

Applicability

4.1. Functional Entities:

4.1.1 Generator Owner that applies load-responsive protective relays as described in PRC-026-1 – Attachment A at the terminals of the Elements listed in Section 4.2,

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PRC-006-3: Automatic Underfrequency Load Shedding

Purpose
 To establish design and documentation requirements for automatic underfrequency load shedding (UFLS) programs to arrest declining frequency, assist recovery of frequency following underfrequency events and provide last resort system preservation measures.

Applicability
4.1.  Planning Coordinators

4.2.  

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PRC-004-5(i): Protection System Misoperation Identification and Correction

Purpose

Identify and correct the causes of Misoperations of Protection Systems  for Bulk Electric System (BES) Elements.

Applicability

Functional Entities:

4.1 Functional Entities:  

4.1.1 Transmission Owner

4.1.2 Generator Owner

4.1.3 Distribution Provider

4.2.

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PRC-010-2: Undervoltage Load Shedding

Purpose

To establish an integrated and coordinated approach to the design, evaluation, and reliable operation of Undervoltage Load Shedding Programs (UVLS Programs).

Applicability

4.1. Functional Entities

4.1.1 Planning Coordinator.

4.1.2  Transmission Planner.

4.1.3 Undervoltage load shedding (UVLS) entities – Distribution Providers and Transmission Owners responsible for the ownership,

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PRC-023-4: Transmission Relay Loadability

Purpose

Protective relay settings shall not limit transmission loadability; not interfere with system operators’ ability to take remedial action to protect system reliability and; be set to reliably detect all fault conditions and protect the electrical network from these faults.

Applicability

4.1. Functional Entity:

4.1.1 Transmission Owner with load-responsive phase protection systems as described in PRC-023-4 –

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PRC-017-1: Remedial Action Scheme Maintenance and Testing

Purpose

To ensure that all Remedial Action Schemes (RAS) are properly designed, meet performance requirements, and are coordinated with other protection systems. To ensure that maintenance and testing programs are developed and misoperations are analyzed and corrected.

Applicability

4.1. Transmission Owner that owns a RAS

4.2.

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PRC-016-1: Remedial Action Scheme Misoperations

Purpose

To ensure that all Remedial Action Schemes (RAS) are properly designed, meet performance requirements, and are coordinated with other protection systems. To ensure that maintenance and testing programs are developed and misoperations are analyzed and corrected.

Applicability

4.1. Transmission Owner that owns a RAS

4.2.

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PRC-015-1: Remedial Action Scheme Data and Documentation

Purpose

To ensure that all Remedial Action Schemes (RAS) are properly designed, meet performance requirements, and are coordinated with other protection systems. To ensure that maintenance and testing programs are developed and misoperations are analyzed and corrected.

Applicability

4.1. Transmission Owner that owns a RAS

4.2.

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