Study on Improved Out-Of-Step Splitting Criterion Based on The PMU

摘要：

　　Ucos(φ) out-of-step criterion was studied in this paper.It is found that Ucos(φ) criterion can only partially capture the variation of the oscillation center voltage,so a method using PMU devices to measure both ends of the bus voltage phase angle difference as a secondary criterion combined with Ucos(φ) criterion is proposed to locate of step oscillation center accurately.equivalent two-machine system model is established to verify the out-of-step based on both ends of the bus voltage phase angle difference by PSCAD simulation tools.The results show that the method can take advantage of the multiport measurement to recognize the out-of-step system state timely so that the contact line can be break reasonably and quickly.

关键词： out-of-step splitting oscillation center voltage phase angle difference improved PMU criterion

作者: Yu Yan Junfang Zhang

作者单位: College of Automation,University of Science and Technology,Nanjing,210094,Jiangsu Province,China

会议类型: 国际会议

会议名称: 第五届中国国际供电会议(GIRED)

会议地点: 上海

会议语种:英文

页码: 1-4

在线出版日期: 2012-09-05（万方平台首次上网日期，不代表论文的发表时间）