基于12序分量的同杆4回线短路故障计算  

Calculation of Short Circuit Fault of Four Jointed Parallel Lines on the Same Tower Based on Twelve Sequence Components

作　　者：邓孟华[1] 范春菊[1] 刘玲[1] 舒巧俊[1] 龚震东[2] 涂崎[3] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海市200240 [2]上海市电力公司超高压输变电公司,上海市200063 [3]上海市电力公司电力调度通信中心,上海市200122

出　　处：《电力系统自动化》2008年第14期64-67,共4页Automation of Electric Power Systems

摘　　要：分别针对同杆4回线的多种单回线故障和跨线故障,将4回线上的12相电压和电流采用分步的矩阵变换消除线间互感和相间互感,得到12序互相独立的序分量。在分析各序电压、电流特点的基础上,建立起相应的序网络,并利用短路故障时的边界条件以及各序网络计算出故障点以及各支路上的各序电压和电流分量,再通过矩阵变换得到短路故障时流过各支路的各相电流及各节点电压。通过比较计算值与ATP仿真值验证了这种计算方法的正确性。According to the many types of single line faults and cross-llne faults of four jointed parallel lines on the same tower, twelve sequence components separated each other can be obtained by the step matrix transform to the twelve phase voltage .and current of four jointed parallel lines on the same tower, so as to decouple the mutual effect. Based on the analysis of the features of each component, the relevant sequence networks are set up. Using twelve sequence network and borderline condition, all sequence voltage and current of any branch can be obtained, then the twelve phase voltage and current of the branch can be calculated by using matrix transform. The value of short circuit current by simulation is compared to that by calculation. The simulation results indicate that the short circuit current calculated by twelve sequence components is correct.

关 键 词：短路故障计算 同杆4回线 12序分量 

分 类 号：TM755[电气工程—电力系统及自动化]