基于网络结构和参数的临界割集的识别  

Identification of Critical Cut-set Based on Network Structure and Parameter

作　　者：孟祥侠[1] 张有东[1] 李祥忠[2] 潘广林[2] 

机构地区：[1]华北科技学院机电工程系,北京101601 [2]吉林石油集团有限责任公司热电厂,松原138000

出　　处：《电力系统及其自动化学报》2011年第1期74-79,共6页Proceedings of the CSU-EPSA

摘　　要：准确识别临界割集能为监测、控制系统在网络中合理布点提供关键的依据。该文基于网络拓扑结构和参数,利用耦合加权的思想形成网络中割集权系数,根据割集权系数的大小即可识别网络中最易导致系统失稳的"瓶颈"环节,并从稳定的角度揭示了输电网络本身固有的分区分层的结构特点对系统暂态稳定的影响。研究结果表明:网络拓扑结构和参数对系统的稳定性起支配的作用。对New England 10机系统进行仿真分析,验证了所提方法的有效性。Accurately identifying critical cut-set can provide very important basis for monitor/control system allocation in network.Based on network topological structure and parameter,cut-set weighted coefficient in network is formed by means of coupling and weighted thinking,＂bottleneck＂section which is most liable to make system losing stability in network is identified according to magnitude of cut-set weighted coefficient,the law which the transmission network itself inherntly hierarchical sturcture characteristics affect the transient stability of power system is revealed in terms of stability.The results show that topological structure and parameter of network dominate stability of power system.Simulation results and analysis on New England 10 machines system testify the validation of the proposed method.

关 键 词：耦合 加权 割集权系数 临界割集 暂态稳定 

分 类 号：TM711[电气工程—电力系统及自动化]