基于广域信号的区域间低频振荡监视  

Monitoring of Inter-Area Oscillation Based on Wide Area Measurement Signal

作　　者：常勇[1] 吴靖[2] 王超[3] 

机构地区：[1]国家电网公司运行分公司,北京100053 [2]杭州市电力局,浙江杭州310009 [3]浙江省电力公司,浙江杭州310027

出　　处：《电网与清洁能源》2011年第5期16-21,30,共7页Power System and Clean Energy

基　　金：十一五"国家科技支撑计划重大项目资助(200613AA02A17)

摘　　要：随着电网互联程度的提高,低频振荡问题很难避免。广域测量系统的出现为更好的监视低频振荡、辨识振荡模态提供了技术基础。从计算速度、定阶判据、计算精度角度分析了现有模态辨识方法,着重比较了Prony方法和ESPRIT方法的适用性,提出了基于广域测量系统辨识电力系统低频振荡监视系统的思路。With expansion of interconnected power grids, low frequency oscillation can hardly be avoided. Wide area monitoring system （WAMS） provides a technical basis to better monitor low frequency oscillation and to identify low frequency oscillation mode. This paper analyzes the existing oscillation nmde identification methods by comparing the applicability of each of the two methods - Prony and ESPRIT, in terms of calculation speed, criterion, and calculation accuracy. Through the above-mentioned research, and proposes a new approach to monitor power system low frequency oscillation based on WAMS.

关 键 词：电力系统 低频振荡 PRONY算法 ESPRIT算法 

分 类 号：TM712[电气工程—电力系统及自动化]