The Influence of Different Trip Time on the Dynamic Security Region
Liu Huaidong1, 2, Fang Wei2, Wang Jinqiao2, Qin Ting2, Feng Zhiqiang2
1. Key Laboratory of Smart Grid of Ministry of Education Tianjin University Tianjin 300072 China; 2. School of Electrical and Information Engineering Tianjin University Tianjin 300072 China
Abstract This paper studies the effect that two terminal of the line trip in different time on the dynamic security region (DSR) by numerical simulation experiment in the case of three-phase short circuit. And come with three conclusions: When the two terminals of the line trip in different time, the hyperplane of the dynamic security region is approximately parallel; The range of the dynamic security region monotone decreasing with the increase of the trip time difference between the two ends of the line; There is an approximately linear relationship between the distance between the hyperplane of the dynamic security region and the trip time difference. The relationship between the transient stability limit and the time difference of the tripping time also satisfies the monotonicity and approximately linear. Based on the above empirical rules, a simplified algorithm for calculating the boundary of DSR is presented. The simulation results of the 10-generator, 39-bus New-England system verify the correctness of the above conclusions and methods.
Liu Huaidong,Fang Wei,Wang Jinqiao等. The Influence of Different Trip Time on the Dynamic Security Region[J]. Transactions of China Electrotechnical Society, 2018, 33(13): 3034-3040.
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2018, Vol. 33 
