Mechanism and Damping Analysis Method of Impact of Power System Stabilizer on Frequency Oscillation

Ronghua DUAN; Qinglan LI; Wei HUANG; Lei CHEN; Chen WU; Yong MIN

doi:10.7500/AEPS20190225005

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Mechanism and Damping Analysis Method of Impact of Power System Stabilizer on Frequency Oscillation

Basic Research | 更新时间：2020-07-14

- Mechanism and Damping Analysis Method of Impact of Power System Stabilizer on Frequency Oscillation
- Automation of Electric Power Systems Vol. 44, Issue 1, Pages: 67-73(2020)
- 作者机构：
  
  1. 清华大学电机工程与应用电子技术系,北京市 100084
  2. 电力系统及发电设备控制和仿真国家重点实验室(清华大学),北京市 100084
  3. 云南电力调度控制中心,云南省昆明市 650011
- 作者简介：
- 基金信息：
- DOI：10.7500/AEPS20190225005
  CLC：
- Received：25 February 2019，
  
  Revised：2019-05-23，
  
  Published Online：03 September 2019，
  
  Published：10 January 2020
- 稿件说明：
移动端阅览
李青兰,黄伟,陈磊等.电力系统稳定器影响频率振荡的机理及阻尼分析方法[J].电力系统自动化,2020,44(01):67-73.

LI Qinglan,HUANG Wei,CHEN Lei,et al.Mechanism and Damping Analysis Method of Impact of Power System Stabilizer on Frequency Oscillation[J].Automation of Electric Power Systems,2020,44(01):67-73.
李青兰,黄伟,陈磊等.电力系统稳定器影响频率振荡的机理及阻尼分析方法[J].电力系统自动化,2020,44(01):67-73. DOI： 10.7500/AEPS20190225005.

LI Qinglan,HUANG Wei,CHEN Lei,et al.Mechanism and Damping Analysis Method of Impact of Power System Stabilizer on Frequency Oscillation[J].Automation of Electric Power Systems,2020,44(01):67-73. DOI： 10.7500/AEPS20190225005.

摘要

频率振荡是有功频率控制过程的小扰动稳定问题。已有研究集中于发电机调速器和原动机环节的分析。电力系统稳定器也可用于抑制频率振荡。分析了发电机励磁系统影响频率振荡的机理

当负荷具有电压调节效应时

则发电机励磁系统通过影响负荷电压进而影响负荷功率

从而对频率振荡产生影响。给出了频率偏差通过电力系统稳定器、励磁、网络、负荷等环节影响电磁功率的过程

利用阻尼转矩法计算电磁功率阻尼系数并分析了电力系统稳定器的影响。提出了多机系统中不同发电机电力系统稳定器对频率振荡阻尼影响大小的评估方法

选择影响大的发电机进行参数优化可更加有效地提高频率振荡阻尼。利用IEEE的4机2区系统对分析结论进行了仿真验证。

Abstract

Frequency oscillation is a small disturbance stability problem in the active frequency control process. Previous studies have focused on the analysis of generator governors and prime movers. Power system stabilizers can also be used to suppress frequency oscillations. The effect mechanism of the generator excitation system on the frequency oscillation is analyzed. When the load has the voltage regulation effect

the generator excitation system affects the load power by the load voltage

thus affecting the frequency oscillation. The process of frequency deviation affecting electromagnetic power through power system stabilizer

excitation

network and load is given. The damping torque theory is used to calculate the electromagnetic power damping coefficient and the influence of power system stabilizer is analyzed. The evaluation method of the effect of different generator power system stabilizers on frequency oscillation damping in multi-machine system is proposed. It is more effective to improve the frequency oscillation damping by selecting the generator with large influence to optimize the parameters. The analysis results are verified by the simulation on IEEE 4-machine 2-area system.

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references

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