计及暂态过程的多支路切除潮流转移识别算法研究  

Flow Transferring Identification Algorithm for Multi-branches Removal Event With Consideration of Transient Phenomena

作　　者：徐慧明[1] 毕天姝[1] 黄少锋[1] 杨奇逊[1] 

机构地区：[1]华北电力大学电力系统保护与动态安全监控教育部重点实验室,北京市昌平区102206

出　　处：《中国电机工程学报》2007年第16期24-30,共7页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50607005);教育部科学技术研究重点项目(106052);新世纪优秀人才支持计划(NCET-05-0216);长江学者和创新团队发展计划(IRT0515)~~

摘　　要：潮流转移引起的连锁跳闸是导致世界各国大停电事件发生的重要因素,严重地威胁着电力系统的安全运行。该文针对多支路连锁切除事件引发的潮流转移问题,将潮流转移因子进一步从单支路切除情况推广到多条支路连锁切除的情况,根据潮流在支路间的折返过程推导了发生多支路连锁切除事件时潮流转移因子的计算公式;并在结合计及暂态过程的支路电流估算的基础上,提出了发生多支路连锁切除事件后,基于广域测量系统(WAMS)有限测点下的支路电流估算方法与潮流转移识别算法。新英格兰10机系统仿真结果验证了文中提出的支路电流估算方法与潮流转移识别算法的有效性。Cascading trips caused by flow transferring are the crucial causation of a lot of well-known blackouts. It severely threatens the security and reliability of power systems. Flow transferring relativity factor （PTRF） is extended from single branch removal event to multi-branches removal event. According to refraction and reflection process of flow transferring, the calculation formula of FFRF for multibranches chain removal event is deduced. Moreover, by using the relationship of node injection currents and branch currents, a method of post-fault branch current estimation and a flow transferring identification algorithm based on WAMS to distinguish flow transferring in transient period is presented. The simulation results of 10-generator 39-bus New England System show that the proposed estimation method and the identification algorithm work well.

关 键 词：多支路连锁切除事件 潮流转移因子 识别算法 广域后备保护 广域测量系统 电力系统 

分 类 号：TM762[电气工程—电力系统及自动化]