含分布式电源的复杂配电网相间故障定位等效解耦模型

doi:10.12204/j.issn.1000-7229.2022.02.006

电力建设 ›› 2022, Vol. 43 ›› Issue (2): 45-53.doi: 10.12204/j.issn.1000-7229.2022.02.006

含分布式电源的复杂配电网相间故障定位等效解耦模型

白星振¹(), 宋昭杉¹(), 葛磊蛟²(), 张波³(), 朱爱莲⁴(), 牛峰⁵()

1.山东科技大学电气与自动化工程学院,山东省青岛市266590
2.智能电网教育部重点实验室(天津大学),天津市300072
3.中国人民解放军32654部队,济南市250024
4.青岛龙发热电有限公司,山东省青岛市 266317
5.省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学),天津市300130

收稿日期:2021-04-29 出版日期:2022-02-01 发布日期:2022-03-24
通讯作者: 葛磊蛟 E-mail:xzbai@sdust.edu.cn;1370023124@qq.com;legendglj99@tju.edu.cn;zhangbo@163.com;861637617@qq.com;niufeng@hebut.edu.cn
作者简介:白星振(1977),男,博士,副教授,研究方向为配电网状态估计及故障诊断、无线传感器网络、数据融合和滤波估计,E-mail: xzbai@sdust.edu.cn;
宋昭杉(1997),男,硕士研究生,研究方向为电力系统控制及其自动化、配电网故障诊断,E-mail: 1370023124@qq.com;
张波(1982),男,硕士,高级工程师,研究方向为武器智能化,E-mail: zhangbo@163.com;
朱爱莲(1995),女,硕士,助理工程师,研究方向为电力设备运行与维护,E-mail: 861637617@qq.com;
牛峰(1986),男,博士,教授,博士生导师,研究方向为电机控制与电器智能化, E-mail: niufeng@hebut.edu.cn。
基金资助:
国家自然科学基金资助项目(51807134);省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学)开放课题基金资助项目(EERI_KF20200014)

An Equivalent Decoupling Model for Fault Location in Complex Distribution Network with Distributed Generation

BAI Xingzhen¹(), SONG Zhaoshan¹(), GE Leijiao²(), ZHANG Bo³(), ZHU Ailian⁴(), NIU Feng⁵()

1. School of Electrical and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong Province, China
2. Key Laboratory of Smart Grid of Ministry of Education(Tianjin University), Tianjin 300072, China
3. 32654 PLA Troops, Jinan 250024, China
4. Qingdao Longfa Thermal Company Limited, Qingdao 266317, Shandong Province, China
5. State Key Laboratory of Reliability and Intelligence of Electrical Equipment (Hebei University of Technology), Tianjin 300130,China

Received:2021-04-29 Online:2022-02-01 Published:2022-03-24
Contact: GE Leijiao E-mail:xzbai@sdust.edu.cn;1370023124@qq.com;legendglj99@tju.edu.cn;zhangbo@163.com;861637617@qq.com;niufeng@hebut.edu.cn
Supported by:
National Natural Science Foundation of China(51807134);State Key Laboratory of Reliability and Intelligence of Electrical Equipment (Hebei University of Technology)(EERI_KF20200014)

摘要/Abstract

摘要：

分布式电源规模化接入,使配电网拓扑结构和组成元素越来越复杂,传统矩阵算法由于馈线开关处故障电流方向难以确定已不再适用于配电网相间故障定位。为有效将复杂配电网的拓扑结构简化,基于深度优先原则对配电网进行解耦,使其变成由若干个树干状结构组成的网络;针对复杂配电网故障定位矩阵算法计算量大、步骤复杂的难题,提出了一种新的复杂配电网故障定位矩阵算法,与传统矩阵算法相比,该方法对配电网T型区段及末梢区段故障的定位更加精确。最后,通过典型园区配电网模型与改进的 IEEE 33系统案例,验证了所提方法既能实现配电网的故障定位,又能简化复杂配电网结构,与以往的行波法相比,文章提出的方法缩短了定位时间,具有较好的工程应用价值。

关键词: 分布式电源, 复杂配电网, 故障定位, 矩阵算法, 等效解耦

Abstract:

Since distributed power supply is connected to distribution networks on a large scale, its topology and components are becoming more and more complex. As the direction of fault current at feeder switches is difficult to determine, a new matrix algorithm for equivalent decoupling fault location in complex distribution networks is proposed in this paper. In order to simplify the topology of complex distribution network effectively, the distribution network is decoupled according to the principle of depth priority to make it a network composed of tree trunks. A new fault-location matrix algorithm for complex distribution network is presented to solve the problem of large computation and complex steps in fault-location matrix algorithm for complex distribution network. Compared with traditional matrix algorithm, this method is more accurate for T-section and terminal section of power network fault location. Finally, through the typical park distribution network model and the improved IEEE 33-node system case, the method proposed in this paper can not only locate the faults in the distribution network, but also simplify the complex distribution network structure. Compared with the traveling wave method, the proposed method shortens the locating time and has better application value.

Key words: distributed generation, complex distribution network, fault location, matrix algorithm, equivalent decoupling

中图分类号:

TM771

白星振, 宋昭杉, 葛磊蛟, 张波, 朱爱莲, 牛峰. 含分布式电源的复杂配电网相间故障定位等效解耦模型[J]. 电力建设, 2022, 43(2): 45-53.

BAI Xingzhen, SONG Zhaoshan, GE Leijiao, ZHANG Bo, ZHU Ailian, NIU Feng. An Equivalent Decoupling Model for Fault Location in Complex Distribution Network with Distributed Generation[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(2): 45-53.

图/表 13

图1 含分布式电源的简单配电网模型

Fig.1 Simple distribution network model with distributed power

图2 复杂配电网模型

Fig.2 Complex distribution network model

图3 等效解耦结果

Fig.3 Equivalent decoupling results

图4 故障定位算法流程

Fig.4 Flowchart of fault-location algorithm

图5 改进IEEE 33节点配电网等效解耦

Fig.5 Equivalent decoupling of improved IEEE 33-node distribution network

表1 不同投切系数下IEEE 33节点配电网故障定位结果

Table 1 Fault location results of IEEE 33-node distribution network with different switching coefficients

图6 复杂配电网等效解耦实现

Fig.6 Implementation of equivalent decoupling for complex distribution network

表2 复杂配电网故障定位结果

Table 2 Fault location results for complex distribution network

表3 改进IEEE 33节点系统下不同矩阵算法的比较

Table 3 Comparison of different matrix algorithms under improved IEEE 33-node system

图7 IEEE 69节点配电网模型

Fig.7 IEEE 69-node distribution network model

表4 IEEE 69节点系统下不同算法定位时间对比

Table 4 Comparison of different algorithms in IEEE 69-node system

图8 对比算法配电网模型

Fig.8 Distribution network model with comparison algorithm

表5 不同算法故障定位时间和效果比较

Table 5 Comparison of different algorithms

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含分布式电源的复杂配电网相间故障定位等效解耦模型

An Equivalent Decoupling Model for Fault Location in Complex Distribution Network with Distributed Generation

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