基于固有模態(tài)能量的配電網(wǎng)故障預警方法
毛厚鐘1，鄭敏楊2
（1 國網(wǎng)寧德供電公司，福建 寧德 352000；
2 福州大學 電氣工程與自動化學院，福建 福州 350108）
摘 要：為提高電網(wǎng)供電可靠性，提出了一種故障預警方法，通過判斷故障類型，監(jiān)測出瞬時性故障時進入預警，將母線零序電壓和各線路零序電流的監(jiān)測值進行固有模態(tài)能量計算，超過預警值時發(fā)出警告，提示工作人員進行檢修。經(jīng)仿真數(shù)據(jù)和實際數(shù)據(jù)計算驗證，證明了該故障預警方法的可行性。
關鍵詞：配電網(wǎng)；選線；單相接地；故障預警
中圖分類號：TM711；TM726 文獻標識碼：A 文章編號：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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