基于小波分析的动态电压稳定判据  

Criteria of Dynamic Voltage Stability Based on Wavelet Transform

作　　者：黄志刚[1,2] 陆超[1] 李立理[1] 韩英铎[1,2] 

机构地区：[1]清华大学电机系,北京市100084 [2]澳门大学,中国澳门

出　　处：《电力系统自动化》2008年第5期24-28,共5页Automation of Electric Power Systems

摘　　要：对发生在到达传输能力极限之前的动态电压崩溃事件,尚缺乏很好的方法进行检测。针对这一问题,提出对负荷点的电压及基于同步相量测量计算的动态雅可比逆矩阵电压/无功灵敏度进行小波变换。由于小波变换在检测信号突变方面优势明显,可以迅速筛选电压崩溃过程中的异常变化量,因此可以使用这种方法监测母线状态达到检测电压崩溃的目的。该方法的有效性在包含异步电动机的IEEE 39母线系统的仿真中得到了验证。A wavelet transformation based detection method is proposed for the voltage collapse occurring under the transmission limit, in which no effective detection methods are used up to now. The abnormal phenomenon induced by the Voltage collapse can be detected quickly with the help of applying wavelet transformation on voltages of load nodes and the main diagonal Of inverse of dynamic Jacobian matrix （sensitivity）. The proposed method can point out the first bus that experiences voltage collapse. Effectiveness of this method is proved by the simulation on IEEE 39-bus testing system with motor as part of its load.

关 键 词：电压稳定 传输能力极限 小波变换 同步相量测量 

分 类 号：TM712[电气工程—电力系统及自动化]