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GB/T 40591-2021Guide for setting test of power system stabilizer (English PDF)

电力系统稳定器整定试验导则

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 11, 2021

Implementation date

May 1, 2022

Scope

GB/T 40591-2021 is the English-translated version of 电力系统稳定器整定试验导则.

GB/T 40591-2021 is a guide to the setting tests of power system stabilizers (PSS), the additional excitation control that damps power oscillations in the grid.

It applies to steam and gas turbine and nuclear units of 100 MW and above, to hydro units of 40 MW and above, and to pumped storage and concentrated solar power units, where the synchronous generators are connected at 220 kV and above; other units may follow it.

It covers the test conditions, the test items and their requirements, parameter tuning and when the parameters must be retuned. It defines terms such as reverse action, and its annexes give a PSS model, the calculation of oscillation frequency and damping ratio and a dynamic power angle stability calculation. It was issued on 11 October 2021 and has applied since 1 May 2022.

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Document preview — GB/T 40591-2021

National Standard of the People's Republic of China

ICS: 29.020
Classification: F 21

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Test conditions
5 Test items and requirements
6 Parameter tuning
7 Conditions for parameter re-tuning
Appendix A (informative) PSS model
Appendix B (Normative) Calculation method of oscillation frequency and damping ratio
Appendix C (Normative) Dynamic power angle stability calculation

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

1 Scope

This document specifies the test conditions, test items and requirements, and parameter setting of power system stabilizers.

This document applies to steam (gas) turbine generators and nuclear power units with a single unit capacity of 100MW and above, and water turbines with a capacity of 40MW and above.

Generators, pumped storage power generation/motors and CSP units are connected to synchronous generators with voltage levels of 220kV and above. Other units can participate Follow the execution.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 7409.3 Synchronous Motor Excitation System Technical Requirements for Large and Medium-sized Synchronous Generator Excitation System

GB 38755 Safety and Stability Guidelines for Power Systems

DL/T 583 Technical conditions of static rectification excitation system for large and medium-sized hydro-generators

DL/T 843 Technical conditions of synchronous generator excitation system

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Power system stabilizer; PSS

With the help of an automatic voltage regulator to control the excitation of the synchronous motor, additional control devices or functions to suppress the power oscillation of the power system.

Note: The input variables of PSS can be single variables such as speed, frequency, power, etc., or a combination of the above single variables can be used. [Source: GB/T 7409.1-2008, 5.9, with modification]

3.2 Reverse action

When the output power of the prime mover increases or decreases, the excitation voltage, synchronous motor voltage, and reactive power are simultaneously caused by PSS regulation. The phenomenon of reverse adjustment.

3.3 Uncompensated frequency response characteristics of excitation control system

When PSS exits, the frequency response characteristics of the electromagnetic torque component Te2 generated by the excitation adjustment to the PSS output embedding point signal US (deltaTe2/deltaUS).

Note: In engineering, the terminal voltage deltaUt is often used to replace the torque component deltaTe2, which is expressed by deltaUt/deltaUS. deltaUS is the excitation added at the PSS output embedding point Signal.

3.4 Compensated frequency response of an excitation control system

When the PSS is turned on, the electromagnetic torque component Te2 generated by the excitation adjustment is the frequency response characteristic of the PSS input signal USI (deltaTe2/ […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

DL/T 843

Cited by

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