Superseded by IEEE 421.2-1990. This guide includes criteria, definitions, and test procedures for evaluating the dynamic performance of excitation control systems as applied by electric utilities. Primary purposes are to provide a basis for evaluating closed-loop performance of excitation control systems (including both the synchronous machine and its excitation system) for both large and small signal disturbances; confirming the adequacy of mathematical models of excitation systems for use in analytical studies of power systems; specifying methods for performing test of excitation control systems and their components; and preparing excitation system specifications and additional standards. Portions of this guide will also serve as an educational means for people becoming acquainted with excitation control systems.
- Standard Committee
- PE/EDPG - Energy Development & Power Generation
- Status
- Superseded Standard
- Superseded by
- 421.2-1990
- Board Approval
- 1976-12-09
- History
-
- ANSI Approved:
- 1981-07-17
- Published:
- 1978-06-29
Working Group Details
- Society
- IEEE Power and Energy Society
- Standard Committee
- PE/EDPG - Energy Development & Power Generation
Other Activities From This Working Group
Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.
P421.2
Guide for Testing and Evaluation of the Dynamic Performance of Excitation Control Systems
This guide includes criteria, definitions, and test objectives for evaluating the dynamic performance of excitation control systems as applied by electric utilities. The term excitation control system is used to distinguish the combined performance of the synchronous machine, power system, and excitation system from that of the excitation system alone. This guide provides a basis for evaluating the closed-loop performance of excitation control systems, including synchronous machines, for both large and small signal disturbances. Confirming the adequacy of mathematical models for excitation control systems for use in analytical studies of power systems, identifying objectives for tests of excitation control systems and their components, and preparing excitation system specifications and additional standards is also be addressed. Portions of this guide also serve as educational material for people who are becoming familiar with excitation control systems. This guide applies to excitation systems used on all sizes and types of synchronous machines, including those in nuclear power facilities. Large signal performance is associated with equipment specification and acceptance testing, while small signal performance is associated with stability and model studies. Matching actual disturbance data with model simulations, however, requires that both large and small signal performance criteria be considered during design, specification, and acceptance testing, and this guide provides common definitions and methods to allow comparison between different equipment responses and for comparison of actual equipment response and simulated (model) response.
Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.
No Active Standards
These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.
421.2-1990
IEEE Guide for Identification, Testing, and Evaluation of the Dynamic Performance of Excitation Control Systems
IEEE Std 421.2-1990, IEEE Guide for Identification, Testing, and Evaluation of the Dynamic Performance of Excitation Control Systems, presents dynamic performance criteria, definitions, and test objectives for excitation control systems as applied by electric utilities. It should be specifically noted that the term "excitation control system" refers to the entire control system including the synchronous machine and power system as well as the excitation system.
These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.
No Inactive-Withdrawn Standards
These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.
No Inactive-Reserved Standards