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Study on Power Cable Fault Location Based on Mathematical Morphology and Wavelet

Author: HuGuang
Tutor: ZhangJunFang
School: Nanjing University of Technology and Engineering
Course: Proceedings of the
Keywords: Power cable Fault Location Mathematical Morphology Wavelet Analysis High - speed data acquisition
CLC: TM755
Type: Master's thesis
Year: 2010
Downloads: 194
Quote: 1
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Abstract


With the rapid development of China's national economy and urbanization accelerated pace , power cables increasingly wide range of applications . But in the use of the power cable in the event of failure , it is difficult to quickly find the location of the point of failure , if not timely troubleshooting and restoration of electricity , often causing huge economic losses . How fast and accurate power cable fault location to protect the normal operation of the power grid , has a very important significance . Papers as the theoretical basis of mathematical morphology and wavelet analysis , in-depth study and simulation of power cable fault location method , fault modeling and design of a power cable fault location system . The paper analyzes the reflection wave is difficult to accurately identify problem common in the cable fault location , the introduction of the theory of mathematical morphology and wavelet analysis , study them in power cable fault location , ranging method of traveling wave improvement , mathematical morphology and wavelet analysis combined filter out line noise wave signal singularity detection based on , to find out the exact moment of the traveling wave reaches . Using MATLAB fault model and simulation results show that the improved power cable fault location method to solve the fault reflection wave accurately identify problems and to improve the accuracy of the power cable fault location . The paper design a power cable fault location system . The system hardware includes LPC2142 as the main CPU , high-speed data acquisition circuit , the circuit speed A / D conversion chip serial communication interface for data collection and transmission , and data display function . The system software is divided into two parts : one is using the C language lower computer program , mainly to complete the system initialization signal acquisition , data display and transmission work ; PC software is written in C language and MATLAB language , completion of the sampling data analysis and processing as well as the cable fault distance calculation . The papers last power cable fault location system , the experimental test results show that the system meets the requirements of power cable fault location .

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Lines and towers > Line maintenance
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