临界切除时间的解析灵敏度分析  

ANALYTICAL SENSITIVITY ANALYSIS OF CRITICAL CLEARING TIME

作　　者：胡锡龙[1] 陈学允[1] 柳焯[1] 

机构地区：[1]哈尔滨工业大学

出　　处：《电力系统自动化》1992年第6期18-23,35,共7页Automation of Electric Power Systems

基　　金：高等学校博士学科点专项基金资助

摘　　要：本文首次推导了保留结构模型下临界切除时间对发电机出力灵敏度的解析表达式,详细地给出了用势能界面法(PEBS)求临界切除时问灵敏度的计算方法和过程。根据此灵敏度,可求出临界切除时间与发电机有功出力之间的关系,对系统进行哲态稳定预防控制,以提高系统的暂态稳定性。对两个试验系统计算的结果表明了本文方法的有效性和可行性。Irs this paper, the analytical sensitivity expression of critical clearing time to generator's output under structure preserving model has been derived for the first time. The calculating method and procedure by potential energy boundary surface (PEBS) method arc also presented in detail. According to the sensitivities, the relation between the critical clearing time and the generator's output can be known. The sensitivities can also be used to realize transient stability preventive control and improve the transient stability. The numerical results obtained from two test systems show that the proposed method is practical and effective.

关 键 词：电力系统稳定 临界切除时间 

分 类 号：TM712[电气工程—电力系统及自动化]