Cooperative Control Method for Distribution Network Fault Restoration Considering Closed-loop Voltage Fluctuation Suppression

被引：0
|
作者：
Ouyang J. [1 ]
Chen J. [1 ]
Yuan Y. [1 ,2 ]
Huang F. [3 ]
机构：
[1] State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing
[2] Dongguan Power Supply Bureau of Guangdong Power Grid Corporation, Dongguan
[3] State Grid Chongqing Electric Power Research Institute, Chongqing
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2023年 / 47卷 / 09期
关键词：
cooperative control; distributed generator (DG); distribution network; fault restoration; voltage fluctuation suppression;
D O I：
10.7500/AEPS20220814003
中图分类号：
学科分类号：
摘要：
The distributed generator (DG) with flexible power control capability can adjust the distribution of network power flow, which contributes to the distribution network fault restoration with DG. In recent years, fault restoration methods using network reconfiguration and DG power control collaboration have been developing rapidly. The transient electrical changes caused by the cooperation of the two recovery methods may threaten the safety of the fault restoration process, especially the research related to the closed-loop voltage fluctuations is still in its infancy. Therefore, this paper proposes a cooperative control method for distribution network fault restoration considering closed-loop voltage fluctuation suppression. Based on the system state after fault restoration and voltage fluctuations during the restoration, the necessity of the cooperation between DG output regulation and switching operation is analyzed. An upper level model considering the system state after fault restoration and a lower level model considering the voltage fluctuation during the restoration are established, forming a control sequence combination with the basic steps of“DG output regulation-closing branch switch-opening branch switch-DG output reset”. Furthermore, a method of generating a step-by-step implementation scheme for fault restoration is proposed. The numerical example shows that this method can maximize the security of the system state and recovery process after fault restoration, and effectively improve the power supply reliability of the distribution network containing DG. © 2023 Automation of Electric Power Systems Press. All rights reserved.
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页码：193 / 201
页数：8
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