配电网单相接地故障的识别与智能补偿控制  

Identification and Intelligent Compensation Control of Single-Phase Grounding Fault in Distribution Network

作　　者：陈忠仁[1,2] 张波[2] 黄健[1] 

机构地区：[1]中山职业技术学院,广东中山510640 [2]华南理工大学电力学院,广州510640

出　　处：《电瓷避雷器》2014年第2期66-70,76,共6页Insulators and Surge Arresters

基　　金：中山市科技计划项目(编号:20123A346)

摘　　要：针对目前运行的自动消弧线圈不能识别接地故障,导致拒动、误动、残流过大等问题,对中性点电压在瞬时性接地、低阻接地、高阻接地等情况下的取值范围进行了推导计算,对能够识别的高阻接地的取值勤范围亦进行了推导计算,并通过仿真验证了推导的正确性。据此对自动消弧线圈进行了改造。Based on the problems such as refusing compensation, mistaken compensation or oversize residual current, which is because the currently running automatic arc-suppression coils can not recognize the grounding fault. The neutral point voltage ranges in the case of instantaneous grounding, low-resistance grounding, and high-resistance grounding are derived. And the recognizable resistance range in the case of high-resistance grounding is also derived, and the validity of the derivations is verified by the simulations. According the derivations, the automatic arc-suppression coil is improved, some new functions such as grounding fault identification and intelligent compensation control are added, which effectively solved the existing problem of arc-suppression coil and improved the overall performance of arc-suppression coil. A simulated high-voltage network is built in the laboratory, and different types of single-phase grounding fault test are carried out on the improved automatic arc- suppression coil, the tests results show that the methods are satisfied and worth of further promoting.

关 键 词：配电网 消弧线圈 单相接地故障识别 智能补偿控制 

分 类 号：TM862.3[电气工程—高电压与绝缘技术]