电力系统自动化2017，Vol.41Issue(5)：128-133,6.DOI:10.7500/AEPS20160418003
基于双闭环控制的配电网单相接地故障有源消弧方法
Active Arc-suppression Method Based on Double Closed-loop Control Under Single-phase Grounding Faults in Distribution Networks
摘要
Abstract
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 proportionai-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 innerloop 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.关键词
比例-谐振(PR)控制/比例-积分(PI)控制/单相接地故障/消弧/双闭环控制Key words
proportional-resonant (PR) control/proportional-integral (PI) control/single-phase grounding fault/arc-suppression/double closed-loop control引用本文复制引用
陈锐,周丰,翁洪杰,王文,曾祥君..基于双闭环控制的配电网单相接地故障有源消弧方法[J].电力系统自动化,2017,41(5):128-133,6.基金项目
国家杰出青年科学基金资助项目(5142500269) （5142500269）
国家自然科学基金资助项目(51407014).This work is supported by National Science Fund for Distinguished Young Scholars (No.5142500269) and National Natural Science Foundation of China (No.51407014). （51407014）
