EN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
- 中国电力 2021年54卷第7期 页码：93-99, 124
- 作者机构：
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
- 作者简介：
[ "王巍璋(1995—)，男，通信作者，硕士研究生，从事配电自动化及配电网故障定位研究，E-mail：120162174@qq.com" ]
[ "王淳(1963—)，男，博士，教授，从事电力系统规划、优化理论在电力系统中的应用研究，E-mail：cu_wang@126.com" ]
- 基金信息：国家自然科学基金资助项目(51467012)
DOI：10.11930/j.issn.1004-9649.201906001
中图分类号：收稿：2019-06-06，
修回：2019-10-15，
纸质出版：2021-07-05
- 稿件说明：
移动端阅览
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.
Weizhang WANG, Chun WANG, Fagen YIN. 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.
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. DOI： 10.11930/j.issn.1004-9649.201906001.
Weizhang WANG, Chun WANG, Fagen YIN. 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. DOI： 10.11930/j.issn.1004-9649.201906001.
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。
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which results in the traditional fault location method no longer applicable.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.
关键词
Keywords
references
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