﻿ 基于曲线拟合的电缆故障点精确定位方法 Accurate Positioning Method of Cable Fault Point Based on Curve Fitting

Transmission and Distribution Engineering and Technology
Vol.05 No.04(2016), Article ID:19213,7 pages
10.12677/TDET.2016.54007

Accurate Positioning Method of Cable Fault Point Based on Curve Fitting

Lei Ning1, Guangli Wang1, Zean Zhu1, Peng Wu2

1Shanghai Songjiang Power Supply Company, Shanghai

2Department of Electrical Engineering, Shanghai University of Engineering Science, Shanghai

Received: Nov. 27th, 2016; accepted: Dec. 12th, 2016; published: Dec. 15th, 2016

ABSTRACT

Cable fault is one of the common fault types in power system. Based on the data of detected fault distance, determination of the of the cable fault point coordinate is very important for the cable fault repair work. In this paper, a 3D coordinate location method for cable fault point based on curve fitting is proposed. In the proposed method, the XY coordinates of the cable in the ground plane are fitted to the quadratic curve. The XZ coordinates of the cable are fitted to the linear curve on the depth of the buried depth. Based on the proposed method, a set of software for fault location of cable is developed. The application of the software can improve the accuracy of fault position finding and speed up the fault processing.

Keywords:Cable Fault, Position Location, Curve Fitting, Least Square Method

1国网上海松江供电公司，上海

2上海工程技术大学电子电气工程学院，上海

1. 引言

2. 电缆走向的曲线拟合方法

(1)

(2)

(3)

(4)

(5)

3. 电缆故障点坐标的定位方法

(6)

(7)

(8)

Figure 1. Flowchart of the 3D curve fitting procedure for cable route

Figure 2. Flowchart of fault point coordinate of cable length

4. 电缆故障点定位软件

Figure 3. Data entry module display interface

Figure 4. Cable fitting display interface

Figure 5. Cable coordinate positioning display interface

5. 结论

Accurate Positioning Method of Cable Fault Point Based on Curve Fitting[J]. 输配电工程与技术, 2016, 05(04): 46-52. http://dx.doi.org/10.12677/TDET.2016.54007

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