The drafting team is responding to Quality Review comments and revising
the associated documents in preparation for posting. Two standards,
MOD-026-1 and PRC-024-1 will be posted for a formal 30-day comment
period and successive ballot of the standards and non-binding poll of
the associated VRFs and VSLs during the last ten days of the comment
period. Three standards, MOD-025-2, MOD-027-1 and PRC-019-1 will be
posted for a formal 45-day comment period with an initial ballot of the
standards and non-binding poll of the associated VRFs and VSLs during
the last ten days of the comment period.
Purpose/Industry Need:
To ensure that generators will not trip off-line during specified
voltage and frequency excursions or as a result of improper
coordination between generator protective relays and generator
voltage regulator controls and limit functions (such coordination
will include the generating unit’s capabilities).
To ensure that generator models accurately reflect the generator’s
capabilities and operating characteristics.
New standards to be finalized as part of this project are:
PRC-019 — Coordination of Generator Voltage Regulator Controls
with Unit Capabilities and Protection
PRC-024 — Generator Performance During Frequency and Voltage
Excursions
MOD-026 — Verification of Models and Data for Generator
Excitation System Functions
MOD-027 — Verification of Generator Unit Frequency Response
Standards to be revised as part of this project are:
MOD-024 — Verification of Generator Gross and Net Real Power
Capability
MOD-025 — Verification of Generator Gross and Net
Reactive Power Capability
All six of the standards included in this project address
generator verifications needed to support bulk power system
reliability. All six of he standards included in this project
were originally ”Phase III & IV Planning Measures” that were
translated into new or a proposed standards as part of the
Version 0 translation effort. Stakeholders have already agreed that there is a
reliability-related need for each of these standards as part of
the work performed in association with the Phase III & IV
Modeling SAR. In addition, each of the standards included in this project has
some “fill in the blank” requirements assigned to the Regional
Reliability Organization that need to be replaced with more
specific “continent-wide” requirements before the standards are
approved.
