基于录波曲线的电力系统低频振荡事故原因分析与抑制策略

doi:10.11930/j.issn.1004-9649.201911097

中国电力 ›› 2021, Vol. 54 ›› Issue (11): 104-114.DOI: 10.11930/j.issn.1004-9649.201911097

基于录波曲线的电力系统低频振荡事故原因分析与抑制策略

方日升¹, 林耀东², 徐振华¹, 黄霆¹, 黄道姗¹, 江伟¹, 林济铿², 张健¹

1. 国网福建省电力有限公司电力科学研究院,福建福州 350007;
2. 同济大学电子与信息工程学院,上海 201804

收稿日期:2019-11-20 修回日期:2020-09-27 出版日期:2021-11-05 发布日期:2021-11-16
作者简介:方日升(1969-),男,博士,高级工程师,从事电力系统稳定性分析及控制、能源互联网、智能电网等研究,E-mail:fang9576@qq.com;林济铿(1967-),男,博士,教授,博士生导师,从事电力系统稳定性分析及控制、配网自动化、智能电网等研究,E-mail:mejklin@126.com
基金资助:
国网福建省电力有限公司重点科技项目(福建电网统调大型机组一次调频功率振荡机理分析及抑制措施关键技术研究，52130417000J)；国家自然科学基金资助项目(51177107)

Cause Analysis and Suppression Strategy of Power System Low-Frequency Oscillation Based on Recording Curves

FANG Risheng¹, LIN Yaodong², XU Zhenhua¹, HUANG Ting¹, HUANG Daoshan¹, JIANG Wei¹, LIN Jikeng², ZHANG Jian¹

1. State Grid Fujian Electric Power Research Institute, Fuzhou 350007, China;
2. College of Electronics and Information Engineering, Tongji University, Shanghai 201804, China

Received:2019-11-20 Revised:2020-09-27 Online:2021-11-05 Published:2021-11-16
Supported by:
This work is supported by Key Science and Technology Project of State Grid Fujian Electric Power Co., Ltd. (Research on Mechanism of Power Oscillation of Primary Frequency Modulation and Key Technologies of Suppression Measures for Large Units in Fujian Power Grid, No. 52130417000J) and National Natural Science Foundation of China (No.51177107)

摘要/Abstract

摘要： 如何快速确定电力系统低频振荡的原因并进行有效抑制，一直是一个备受关注的课题。提出基于录波曲线的电力系统低频振荡问题分析及抑制一体化新策略。首先，进行系统的特征值分析，根据系统是否存在与现场录波曲线振荡频率一致的振荡模式，判断系统发生的低频振荡属于强迫振荡还是弱阻尼振荡。然后，根据系统振荡的类型采用不同抑制策略，若系统振荡属于强迫振荡，进一步以探测排查的方式确定强迫振荡源的位置并消除振荡源，从而消除低频振荡；若系统振荡属于弱阻尼振荡，进一步通过阻尼转矩分析判断弱阻尼是由励磁系统还是调速系统引起，针对由励磁系统及调速系统引起的弱阻尼低频振荡，分别提出采用配置电力系统稳定器及优化调速系统参数进行振荡的抑制。方案的有效性和正确性通过实际系统的算例得到验证。

关键词: 低频振荡, 录波曲线, 强迫振荡, 弱阻尼, 抑制策略

Abstract: How to swiftly determine the cause of the power system low-frequency oscillation and suppress it effectively is always a subject of great concern. A novel integrated solution is proposed to analyze and suppress the power system low-frequency oscillation based on the recording curves. Firstly, the eigenvalues of the system are analyzed, and the type of the low-frequency oscillation is determined according to whether the system has an oscillation mode consistent with the recording curves. And then, different suppression strategies are adopted according to the type of the oscillation. If the oscillation is a forced one, detect the disturbance source, and eliminate it to suppress the oscillation. If it is caused by the poor damping, determine whether the poor damping is caused by excitation system or governor through analysis of the damping torque of the system. And a power system stabilizer and the optimized governor parameters are proposed respectively to solve the poor damping caused by the excitation system and the governor. The validity of the solution is verified by its application to an actual power system.

Key words: low-frequency oscillation, recording curve, forced oscillation, poor damping, suppression strategy

方日升, 林耀东, 徐振华, 黄霆, 黄道姗, 江伟, 林济铿, 张健. 基于录波曲线的电力系统低频振荡事故原因分析与抑制策略[J]. 中国电力, 2021, 54(11): 104-114.

FANG Risheng, LIN Yaodong, XU Zhenhua, HUANG Ting, HUANG Daoshan, JIANG Wei, LIN Jikeng, ZHANG Jian. Cause Analysis and Suppression Strategy of Power System Low-Frequency Oscillation Based on Recording Curves[J]. Electric Power, 2021, 54(11): 104-114.

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基于录波曲线的电力系统低频振荡事故原因分析与抑制策略

Cause Analysis and Suppression Strategy of Power System Low-Frequency Oscillation Based on Recording Curves

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基于录波曲线的电力系统低频振荡事故原因分析与抑制策略

Cause Analysis and Suppression Strategy of Power System Low-Frequency Oscillation Based on Recording Curves

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