Grid Readiness, Integration and Performance Requirements
The Grid Readiness, Integration and Performance (GRIP) Requirements address reliability challenges in the Alberta Interconnected Electric System (AIES). They provide risk-informed performance criteria and technical assessments for connection projects.
The guidelines aim to:
- Reduce unexpected compliance issues and operational risks during project energization
- Improve efficiency in execution phase of the AESO Connection Process
Applicable requirements will be identified based on project risk and implemented and enforced through Functional Specifications for relevant connection projects. The AESO will conduct formal consultation with the industry to transition GRIP requirements into the appropriate Authoritative Documents (ADs) and Information Documents (IDs).
GRIP Topics
Grid Readiness, Integration and Performance (GRIP) Requirements: High-Level Overview. The GRIP Requirements consist of three different categories of document.
In the first category are GRIP documents that establish consistent technical assessment documentation regarding existing ISO rules and other Authoritative Document (AD) requirements:
- Conductor and Line Optimization
- Dynamic Reactive Power
- Effective Grounding
- Harmonic Analysis
- Protection and Control Assessment
These GRIP documents may be reflected through new or modified Information Document content to be developed by the AESO.
In the second category are GRIP documents that establish consistent performance criteria and technical assessment documentation, and that reflect recognized industry practice in either Alberta or North America:
- Anti-Islanding for Transmission Connected Assets
- Sub-Synchronous Oscillation (SSO)
- Connection to Series Compensated Line
- System Restoration on Cranking Path
- Transformer Energization
A market participant, through functional specifications issued by the AESO for a connection project, may be required to comply with these documents based upon the AESO’s analysis of a market participant’s facility and its impact on the AIES.
The third and final category consists of a single document that introduces performance criteria and technical assessment for system strength that may be unfamiliar by the industry:
This document represents a new industry practice that is required for AIES reliability. Similar to the GRIP documents in the second category, a market participant may be required to comply with them, through functional specifications issued by the AESO for a connection project, based upon the AESO's analysis of a market participant’s facility and its impact on the AIES.
