电网技术2023，Vol.47Issue(12)：5215-5224,10.DOI:10.13335/j.1000-3673.pst.2022.2504
配电网接地故障自适应融合抑制方法
Adaptive Fusion Suppression for Ground Faults in Distribution Networks
摘要
Abstract
The existing flexible suppression methods of ground faults in distribution networks are greatly affected by the factors like the measurement accuracy of ground parameters,the load changes,the ground fault resistance and the line impedance voltage drop.Therefore,a novel fusion suppression for ground faults in distribution networks that adapts to the parameter and load changes is proposed in this paper.Based on the analysis of the ground fault current distribution law,a fault current suppression method based on the fault phase current regulation is put forward.The fault point current is suppressed by regulating the fault phase current to equal the fault phase load current.A real-time extraction for the load current is raised to adapt to the load changes without the measurement of the ground parameters.In addition,a parallel current-voltage double closed-loop control method is presented according to the application scope of the principles of current and voltage suppression.Both the fault current and voltage are suppressed to accommodate the effects of the ground fault resistance and line impedance voltage drop.Simulation and experimental results prove the effectiveness and advantages of the proposed method.关键词
配电网/单相接地故障/柔性消弧/自适应融合抑制/参数和负荷变化Key words
distribution networks/single-phase ground fault/flexible arc suppression/adaptive fusion suppression/changes in parameters and loads分类
信息技术与安全科学引用本文复制引用
游建章,郭谋发,郑泽胤,刘鑫斌..配电网接地故障自适应融合抑制方法[J].电网技术,2023,47(12):5215-5224,10.基金项目
福建省自然科学基金项目(2023J05106).Project Supported by Natural Science Foundation of Fujian Province(2023J05106). （2023J05106）
