单端工频电气量故障测距算法的鲁棒性  

Robustness of one-terminal fault location algorithms based on power frequency quality

作　　者：陈铮[1] 董新洲[1] 罗承沐[1] 

机构地区：[1]清华大学电机工程与应用电子技术系,北京100084

出　　处：《清华大学学报（自然科学版）》2003年第3期310-313,317,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金重点资助项目(50077011);国际合作基金资助项目(50140430686)

摘　　要：测距算法的鲁棒性是测距结果可靠性的重要保障,传统的测距算法一直在追求准确性而忽略了测距算法的鲁棒性。该文给出了故障测距算法鲁棒性的定义,分析了目前常用的基于工频电气量的5类故障测距算法在各种不同故障类型、系统运行条件和各种测量误差下的鲁棒性问题。仿真结果表明,在各种仿真条件下,测量阻抗法的最大测距误差为31.9km;相对误差为10%左右,虽然不具有很高的准确性,但是具有很强的鲁棒性,可用来确定故障点的粗略范围。The robustness of fault location algorithms affects the accuracy of the algorithms. However, most research has focused on the accuracy of fault location algorithms, while ignoring the robustness of the algorithms. This article presents the definition of robustness, analyzes the robustness of 5 commonly used oneterminal fault location algorithms based on the power frequency quality. Simulation results show that, for the simulated conditions, the maximum error of the measured resistance algorithm is 31.9 km, the relative error is about 10%, the algorithm is quite robust, so it can be used to locate fault zones.

关 键 词：工频电气量 鲁棒性 输电线路 故障测距 单端 

分 类 号：TM711[电气工程—电力系统及自动化]