﻿ 基于萤火虫算法的含DG配电网故障区段定位 Fault Location for Distribution Networks with DG Based on Firefly Algorithm

Smart Grid
Vol.05 No.04(2015), Article ID:15916,7 pages
10.12677/SG.2015.54024

Fault Location for Distribution Networks with DG Based on Firefly Algorithm

Kaixuan Yue, Baohua Wang

School of Automation, Nanjing University of Science and Technology, Nanjing Jiangsu

Email: yuekaixuan88@126.com

Received: Aug. 1st, 2015; accepted: Aug. 17th, 2015; published: Aug. 20th, 2015

ABSTRACT

Firefly algorithm is a new advanced heuristic algorithm, which has advantages of concise concept, few parameters need to be set and good astringency. By dividing the distribution network to reduce the solution’s dimension and improving the firefly algorithm, this paper puts forward a new method of fault location for distribution networks with DG based on binary firefly algorithm. Analysis of example shows that the proposed method is able to get accurate results when it is used to locate single fault or multiple faults in distribution networks accompanied by part of the switch under the distortion of information, which proves its effectiveness. Finally, the comparison results with particle swarm optimization algorithm testify its speed and reliability.

Keywords:Distribution Network, Fault Location, Firefly Algorithm, Distributed Generation

Email: yuekaixuan88@126.com

1. 引言

2. 萤火虫算法

2.1. 算法仿生原理

2.2. 算法数学描述

(1)

(2)

(3)

(4)

(5)

3. 二进制萤火虫算法的应用

3.1. 编码

3.2. 开关函数

（6）

3.3. 评价函数

(7)

4. 提高故障定位算法效率的措施

4.1. 故障信息维度降阶

Figure 1. Simplified DG distribution network fault location analysis chart

Figure 2. Distribution system with DG

4.2. 对二进制萤火虫算法的改进

(8)

5. 算法流程

6. 算例分析

Table 1. Test result of fault

Table 2. Results comparison of algorithms

Figure 3. Convergence tendency of two algorithms

7. 结论

Fault Location for Distribution Networks with DG Based on Firefly Algorithm[J]. 智能电网, 2015, 05(04): 197-203. http://dx.doi.org/10.12677/SG.2015.54024

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