배전계통 고장위치 검출방법에 관한 연구

A Study on the Estimating Locations of Faults on Distribution Power Systems

  • 발행 : 2004.12.01

초록

The Conventional approach for estimating the locations of transmission line shunt faults has been to measure the apparent impedance to the fault from a line terminal and to convert the reactive component of the impedance to line length. But, these methods do not adequately address the problems associated with the fault location on distribution systems. This thesis presents a technique that estimates the location of shunt fault on a radial distribution system that has several single and multiphase laterals. Tapped loads and non-homogenity of the distribution system are take into account. The developed technique, which can handle shunt faults was tested to evaluate its suitability. Results from computer simulation of faults on a model of a 25KV distribution lines like real system are presented. The results approved that the proposed technique works well for estimating the locations of the distribution line shunt faults.

키워드

참고문헌

  1. Desikachar, K.V. and Singh, L.P., 'Digital Travelling-Wave Protection of Transmission Lines', Electric Power Systems Research, Vol. 7, No. 1, January 1984, pp. 19-28 https://doi.org/10.1016/0378-7796(84)90041-5
  2. Ibe, A.O. and Cory, B.J., 'A Travelling Wave-Based Fault Locator for Two and Three-Terminal Networks', IEEE Transactions on Power Systems, Vol. PWRD-1, No. 2, April 1986, pp. 283-288
  3. Ranjbar, A.M., Shirani, A.R. and Fathi, A.F., 'A New Approach of Fault Location Problem on Power Lines', IEEE Transactions on Power Delivery, Vol. 7, No. 1, January 1992, pp. 146-151 https://doi.org/10.1109/61.108901
  4. Johns, A.T. and Agarwal, P., 'A New Approach to Power Line Protection Based upon the Detection of Fault Induced High Frequency Signals', IEE Proceedings, Vol. 137 Pt. C, No. 4, July 1990, pp. 307-313 https://doi.org/10.1049/ip-c.1990.0041
  5. Johns, A.T., Lai, L.L., El-Hami, M. and Daruvala, D.J., 'New Approach to Directional Fault Location for Overhead Power Distribution Feeders', IEE Proceedings, Vol. 138, Pt. C, No. 4, July 1991, pp. 351-357
  6. Carr, J. and Jackson, R.V., 'Frequency Domain Analysis Applied to Digital Transmission Line Protection by Digital Computer', IEEE Transactions on Power Apparatus and Systems, Vol. PAS-95, No. 4, July/August 1975, pp. 1157-1166 https://doi.org/10.1109/T-PAS.1975.31950
  7. Sachdev, M.S., and Agarwal, R., 'A Technique for Estimating Transmission Line Fault Locations from Digital Impedance Relay Measurements', IEEE Transactions on Power Delivery, Vol. 3, No. 1, January 1988, PP. 121-129 https://doi.org/10.1109/61.4237