基于固有模态能量的配电网故障预警方法
毛厚钟1，郑敏杨2
（1 国网宁德供电公司，福建 宁德 352000；
2 福州大学 电气工程与自动化学院，福建 福州 350108）
摘 要：为提高电网供电可靠性，提出了一种故障预警方法，通过判断故障类型，监测出瞬时性故障时进入预警，将母线零序电压和各线路零序电流的监测值进行固有模态能量计算，超过预警值时发出警告，提示工作人员进行检修。经仿真数据和实际数据计算验证，证明了该故障预警方法的可行性。
关键词：配电网；选线；单相接地；故障预警
中图分类号：TM711；TM726 文献标识码：A 文章编号：1007-3175(2016)08-0019-06
Distribution Network Fault Early Warning Method
Based on Intrinsic Mode Energy
MAO Hou-zhong1, ZHENG Min-yang2
（1 State Grid Ningde Electric Power Supply Company, Ningde 352000, China;
2 College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108, China）
Abstract: In order to improve the reliability of power supply, this paper presented a kind of fault early warning method. Through the judgment of fault type, instantaneous fault turned into the status of fault early warning. The zero sequence voltage and the zero sequence current of each line were input to calculate the intrinsic mode energy. If the value was more than the early warning value, the personnel were remaindered to examine and repair the module. After the calculation of simulation data and actual engineering data validation, this fault early warning method is proved to be feasible.
Key words: distribution network; line selection; single-phase grounding; fault alarm
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