Distributed Fault Self-healing Scheme and Its Implementation for Active Distribution Network

被引：0

作者：

Wu Y. ^{[1
]}

Gao H. ^{[1
]}

Xu B. ^{[1
]}

Kang G. ^{[2
]}

Wu Z. ^{[2
]}

Wang N. ^{[2
]}

机构：

[1] Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education (Shandong University), Jinan

[2] Laiwu Power Supply Company of State Grid Shandong Electric Power Company, Laiwu

来源：

Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2019年 / 43卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Active distribution network; Distributed generator; Fault self-healing; Smart terminal unit;

D O I：

10.7500/AEPS20180711005

中图分类号：

学科分类号：

摘要：

The traditional protection and control of distribution network face a considerable challenge due to the integration of a large number of distributed generators (DGs). In order to solve problems of active distribution network, a distributed fault self-healing scheme based on smart terminal unit (STU) is proposed. The scheme uses current differential protection and fault current amplitude comparison as the fault location principle, which is adaptive to the active distribution network with different DG types and penetration rates. Under the condition that all load switches are circuit breakers, the scheme can realize the fast location, isolation of faulted sections and the power restoration of non-faulted sections. The scheme fully considers the coordination with anti-islanding protection and low voltage ride-through of DGs. Each STU has the function of automatic network topology recognition, therefore can change the related control strategy based on real-time network topology. Finally, using the developed STUs, a closed loop test of a 10 kV active distribution network is carried out on RTDS platform. The test result shows that the scheme can adapt to the change of network structure, and the self-healing time is within one second. © 2019 Automation of Electric Power Systems Press.

引用

页码：140 / 146

页数：6

共 19 条

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