Electric-power-GIS-based distribution network fault location system and method

Abstract

The invention provides an electric-power-GIS-based distribution network fault location system and method. The system comprises an electric power GIS map database which is used for providing the distribution network map information data; a line single line map library which is used for providing the distribution network topological data; a relay protection device which is used for providing the protection switch state data; a voltage and current detection device which is used for providing the real-time state data of the branch node; a prediction rule base which is used for storing prediction rules; and a fault location module which is used for performing calculation in real time according to the prediction rules based on the distribution network topological data with the protection switchstate data and the branch node real-time state data acting as the input and locating the fault to obtain the fault information when the fault occurs. According to the electric-power-GIS-based distribution network fault location system and method, the construction cost and the maintenance cost in the later period can be effectively reduced, the operation and maintenance flow and efficiency of the distribution network can be simplified, the more accurate fault information can be provided and the powerful support for realizing automatic operation and maintenance of the distribution network can beprovided.

Description

technical field [0001] The present application relates to the technical field of distribution network fault location, in particular to a distribution network fault location system and method based on electric power GIS. Background technique [0002] There are mainly two types of distribution network lines: overhead and cables. At present, the fault location of distribution network lines is mainly through the installation of fault indicators on nodes. If a short-circuit fault or a ground fault occurs on the next-level distribution network line, the protection switch on this node must be broken within the specified time to prevent accidents. At the same time, the fault indicator acts, sends fault information to the background system, and flashes to display the fault. According to the alarm signal of the fault indicator, the operator finds the faulty section and then repairs it and restores the power supply. [0003] In the above distribution network line fault location schem...

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Problems solved by technology

[0003] In the above-mentioned distribution network line fault location scheme, it is necessary to install fault indicators on each node of the distribution network line, which not only leads to an increase in system construction costs; ) design and production, that is, there is only one fault detection method, which often cannot meet the complex and changeable distribution network field environment

Furthermore, the fault indicator only judges the fault based on the detection data of the current detection node, and cannot carry out correlation logic derivation on the data of the previous and subsequent nodes, and the distribution network itself is a complex and coherent combination, and the fault indicator often cannot reflect the actual fault situation , so this scheme is relatively one-sided and has certain limitations

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