基于可达矩阵和贝叶斯定理的含分布式电源的配电网故障区段定位

doi:10.11930/j.issn.1004-9649.201906001

中国电力 ›› 2021, Vol. 54 ›› Issue (7): 93-99,124.DOI: 10.11930/j.issn.1004-9649.201906001

基于可达矩阵和贝叶斯定理的含分布式电源的配电网故障区段定位

王巍璋¹, 王淳¹, 尹发根^1,2

1. 南昌大学信息工程学院，江西南昌 330031;
2. 宜春学院理工学院，江西宜春 336000

收稿日期:2019-06-06 修回日期:2019-10-15 发布日期:2021-07-12
作者简介:游广增(1982-),男,硕士,高级工程师,从事电力系统分析与电力规划研究,E-mail:misteryou@qq.com;李华瑞(1994-),男,博士研究生,从事电力系统动态频率分析与控制研究,E-mail:lihuarui_sdu@163.com;李常刚(1984-),通信作者,男,博士,副研究员,从事电力系统安全稳定控制研究,E-mail:lichgang@sdu.edu.cn;刘超(1984-),男,硕士,高级工程师,从事新能源发电与并网研究,E-mail:liuchao@epri.sgcc.com.cn
基金资助:
国家自然科学基金资助项目(51467012)

Reachability Matrix and Bayes' Theorem Based Fault Section Location of Power Distribution Network with Distributed Generation

WANG Weizhang¹, WANG Chun¹, YIN Fagen^1,2

1. School of Information Engineering, Nanchang University, Nanchang 330031, China;
2. School of Physical Science and Technology Engineering, Yichun University, Yichun 336000, China

Received:2019-06-06 Revised:2019-10-15 Published:2021-07-12
Supported by:
This work is supported by National Natural Science Foundation of China (No.51467012)

摘要/Abstract

摘要： 随着分布式电源接入配电网，电流变为双向流动，导致传统的故障区段定位方法不再适用。为解决含分布式电源的配电网故障区段定位问题，提出了一种基于可达矩阵和贝叶斯定理的故障区段定位方法。不同于传统矩阵算法中使用邻接矩阵描述网络拓扑的思路，使用蕴含信息量更大、全局可观性更强的可达矩阵进行拓扑描述和矩阵运算。为应对信息畸变，利用贝叶斯定理进行容错处理，从而找出故障区段。算例结果表明：该方法具有良好的通用性，对于电机型和逆变型分布式电源，可以统一处理。对于含分布式电源的配电网中的单个故障和多重故障，该方法能够准确定位故障区段并且具有一定的容错性。

关键词: 配电网, 分布式电源, 故障定位, 可达矩阵, 贝叶斯定理

Abstract: With the distributed generation connected to the power distribution network, the current becomes a bidirectional flow, which results in the traditional fault location method no longer applicable. In order to solve the problem of fault section location in power distribution network with distributed generation, a fault location method based on reachability matrix and Bayes' theorem is put forward. Different from the idea of using adjacency matrix to describe the network topology in traditional matrix algorithm, the reachable matrix which contained more information and had stronger global observability is used for topology description and matrix operation in this paper. To deal with information distortion, the Bayes' theorem is utilized in fault tolerance processing to find out the fault section(s). Simulation results of test cases show that the proposed method has good generality as it can handle both generator-based and inverter-based distributed generation in a uniform way. For single fault and multiple faults in the distribution network with distributed generation, the proposed method can locate fault section(s) accurately and has certain fault tolerance.

Key words: power distribution network, distributed generation, fault location, reachability matrix, Bayes' theorem

王巍璋, 王淳, 尹发根. 基于可达矩阵和贝叶斯定理的含分布式电源的配电网故障区段定位[J]. 中国电力, 2021, 54(7): 93-99,124.

WANG Weizhang, WANG Chun, YIN Fagen. Reachability Matrix and Bayes' Theorem Based Fault Section Location of Power Distribution Network with Distributed Generation[J]. Electric Power, 2021, 54(7): 93-99,124.

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基于可达矩阵和贝叶斯定理的含分布式电源的配电网故障区段定位

Reachability Matrix and Bayes' Theorem Based Fault Section Location of Power Distribution Network with Distributed Generation

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基于可达矩阵和贝叶斯定理的含分布式电源的配电网故障区段定位

Reachability Matrix and Bayes' Theorem Based Fault Section Location of Power Distribution Network with Distributed Generation

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