电力系统自动化2012，Vol.36Issue(10)：113-117,5.
电力系统强迫功率振荡实例及机理分析
Instances and Mechanism Analysis of Forced Power Oscillation in Power Systems
刘辉 1杨寅平 2田云峰 1刘平 1李庚银2
作者信息
- 1. 华北电力科学研究院有限责任公司,北京市100045
- 2. 华北电力大学电气与电子工程学院,北京市102206
- 折叠
摘要
Abstract
Based on the two low-frequency power oscillation events in a regional grid, the mechanism of power oscillations are described in detail. Corresponding solution methodologies are proposed accordingly. The characteristics of the oscillations are obtained and analysed through phasor measurement unit （PMU） measurements. Theoretical calculation is conducted using single machine infinite bus system model. Time domain simulations using BPA software is also performed following the scenarios of the two events. Consequently, the two events have been proven to be forced low frequency oscillations. Furthermore, based on discharge characteristics of the two events together with field test, it has been identified that the source of disturbance is wobbling of the controlvalve. Finally, discharge characteristic at the inflection point is meliorated through optimizing discharge characteristics of the governing valve, as such further forced low-frequency oscillation events can be avoided.关键词
强迫功率振荡/相量测量单元/汽轮机调速器/时域仿真/电力系统/低频振荡Key words
forced power oscillation/phasor measurement unit (PMU)/turbine governor/time-domain simulation/powersystems/low-frequency oscillation分类
信息技术与安全科学引用本文复制引用
刘辉,杨寅平,田云峰,刘平,李庚银..电力系统强迫功率振荡实例及机理分析[J].电力系统自动化,2012,36(10):113-117,5.
