Overhead Power Line Fault Positioning System

Abstract:

Aimed at the situations of the low accuracy of overhead line fault detection and the high cost of line fault information transmission with the aid of GSM correspondence network, this paper introduces overhead line fault detection and location system as the core of industrial computer. The combination of software and hardware, the methods of current rate of change and zero current detection are used, and so the accuracy of short circuit fault detection is improved. The features of ground phase voltage drop and the 5th harmonic current are integrated, and the accuracy of ground fault detection circuit is improved. Zigbee wireless communication technology is used to make into independent signal transmission system, which not only reduces the system's operating costs but also ensures the reliable transmission of signals. Taking Kingview 6.51 software as development platform, the monitoring program and display with many functions are designed. The system has been put into operation, running in good condition, and passed concluding and acceptance smoothly.

• Periodical: Applied Mechanics and Materials (Volume 329)
• Pages: 299-303
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.329.299
• Online since: June 2013
• Authors: Ai Hua Dong, Xin Lin Geng, Yi Yang, Ying Su, Meng Yao Li
• Keywords: Ground Fault, Online Detection, Overhead Lines, Short-Circuit Fault

References

[1] LI X, YI Z, WANG H. Study on Fault Locating for 10kV Distribution System [J]. Hubei Electric Power, 2011(35):26-28.

[2] LI Y,LU J P, LI J. Fault Location Methods Based on On-line Computation of the Transmission Line Distributed Parameters[J].High Voltage Engineering, 2001,33(11):185-189.

[3] LIU S D, ZHENG Y, YANG F M. Line Fault Fast localization based on GIS fault indicator [J]. Distribution & Utilization, 2006, 23(6):33-35.

[4] ZHANG P Z, ZHAO W B. Design of Short Circuit and Earthling Fault Indicator Based on GPRS[J]. Low Voltage Apparatus, 2008(10):38-41.

[5] XU R M. An Automation Location System of Distribution Line Fault Based on Fault Indicator [J]. Electrical Equipment, 2005, 6(10):66-67.

[6] FENG R H, FENG M L, KONG J S. Detection Protection Methods Based on the Current of the Variation of the Short Circuit [J]. Mining Machinery, 2008, 29(5):171-173.

[7] SUN Z H, HOU Y M. Analysis on the Detection Principle of Single-phase Ground Fault Indicator [J]. Distribution & Utilization, 2004, 21(5):30-32.

[8] GUO J H, TAN W P. Summary on fault location principle in power system [J]. Relay, 2006,(3):76-81.

[9] YE D. A Practical Improvement of Faulted Circuit Indicator in Distribution Network [J]. Electrotechnical Application, 2008, 27(5):62-65.