Research Of Distribution Network Fault Location And Best Repair Path Based On GIS

Distribution network is an important part of achieving modernization of power supply and reasonable electricity distribution. And large, medium and small cities or rural areas all regard the distribution network planning, construction and renovation as a focus work. With the implementation of distribution network construction and transformation, distribution network becomes more complex. Improving power supply reliability and efficiency of power enterprises becomes the current research focus, while the study of distribution network fault location and the best repair path not only help to improve the reliability and timeliness of the power supply system, more conducive to timely repair of power failure. The traditional manual management or information management technology cannot meet the needs of modern power management, and locating the fault location and finding the best repair path using GIS technology is more fast, intuitive and efficient. Based on this, this paper carries the following research.This paper first presents GIS-based distribution network model according to the characteristics of the distribution network and the GIS network model, laying the foundation for fault location and the repair best path.Secondly, basing on the discussion of the distribution network fault classification and fault location methods, we choose the distribution network fault location method based on feeder terminal, the research by the Matrix fault location algorithm for single and multi-power supply distribution network verify that the matrix localization algorithm can accurately and efficiently locate a simple distribution network fault. While for complex distribution network, this algorithm is complex and needs large amount of calculation, so further proposed Bayesian fault localization algorithm to simply handle fault information, this algorithm can quickly and accurately locate the fault by comparing the probability of failure for each feeder section, and using a numerical example to further prove that the algorithm has a certain fault tolerance, and to some extent can mask the influence of interference signals.Finally, choosing Dijkstra algorithm based on greedy strategy as the realization method of the best repair path, and combining diagram with weighted edges with the best repair path model, giving a detailed search process of Dijkstra algorithm, not only simplifies the algorithm implementation process, but also further study the implementation of shortest path in the main GIS software.In this paper, we use ESRI ArcGIS Engine component-based development technology and relevant data of Quanzhou distribution network to design and realize the functions of data view and layout view, and also realize Bayesian distribution network fault location algorithms, effectively verify the algorithm fault tolerance. And use network analysis capabilities of ArcGIS Engine to achieve the best repair path functions of Dijkstra algorithm.