线路两端不同时跳闸对动态安全域的影响  

The Influence of Different Trip Time on the Dynamic Security Region

作　　者：刘怀东[1,2] 方伟 王锦桥 秦婷 冯志强 Liu Huaidong;Fang Wei;Wang Jinqiao;Qin Ting;Feng Zhiqiang(Key Laboratory of Smart Grid of Ministry of Education Tianjin University,Tianjin 300072,China;School of Electrical and Information Engineering Tianjin University,Tianjin 300072,China)

机构地区：[1]天津大学智能电网教育部重点实验室,天津300072 [2]天津大学电气自动化与信息工程学院,天津300072

出　　处：《电工技术学报》2018年第13期3034-3040,共7页Transactions of China Electrotechnical Society

摘　　要：通过大量数值仿真实验,研究发生三相短路的线路两端不同时跳闸对动态安全域(DSR)的影响,并得出了3条经验规律:不同跳闸时间差下DSR超平面的近似平行;DSR范围随跳闸时间差增加而单调递减;DSR超平面间的距离与不同跳闸时间差的近似线性。暂态稳定极限与不同跳闸时间差的关系也满足单调性和近似线性。基于上述经验规律给出一种计算不同跳闸时间差下DSR边界的简化算法。新英格兰10机39节点系统的仿真验证了上述结论和方法的正确性。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.

关 键 词：故障切除 不同时跳闸 动态安全域 暂态稳定极限 

分 类 号：TM712[电气工程—电力系统及自动化]