Active arc-suppression method based on double closed-loop control under single-phase grounding faults in distribution networks

被引：0
|
作者：
Chen R. [1 ]
Zhou F. [2 ]
Weng H. [1 ]
Wang W. [2 ]
Zeng X. [2 ]
机构：
[1] Electric Power Research Institute of Guangdong Power Grid Co. Ltd., Guangzhou
[2] Hunan Province Key Laboratory of Smart Grids Operation and Control (Changsha University of Science and Technology), Changsha
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2017年 / 41卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Arc-suppression; Double closed-loop control; Proportional-integral (PI) control; Proportional-resonant (PR) control; Single-phase grounding fault;
D O I：
10.7500/AEPS20160418003
中图分类号：
学科分类号：
摘要：
The active arc-suppression mechanism under single-phase grounding faults in distribution networks is described. And an active arc-suppression method based on double closed-loop control is proposed. When the single-phase grounding fault occurs, the inverter device injects zero-sequence current into the neutral point to force the faulted phase voltage to zero, and the fault arcs can thus be reliably extinguished. The control system consists of a neutral voltage outer-loop and an injecting current inner-loop using a proportional-integral (PI) controller and proportional-resonant (PR) controller each, respectively. The output of the outer-loop is used as the reference signal for the inner-loop. The stability of the outer-loop and that of the inner-loop controllers are analyzed. Simulation analysis and prototype testing results show that the system has good steady-state and transient response performance, and is able to quickly and precisely suppress the fault current without measuring the impedance parameters of the distribution network. © 2017 Automation of Electric Power Systems Press.
引用
收藏
页码：128 / 133
页数：5
相关论文
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