Method and system for generating power impedance topology map in distribution station area

Abstract

The invention discloses a method and system for generating a power impedance topology map of a distribution station area, belonging to the technical field of distribution station areas. The current line impedance identification requires a large amount of calculation and takes a long time. A method and system for generating a power impedance topology map in a distribution station area of ​​the present invention, firstly obtain the time-series voltage data of the A / B / C three-phases on the side of the distribution transformer and the load nodes of each user, and use the K-means clustering method to determine each The load node phase relationship, then construct the characteristic coefficient matrix for the divided A / B / C three-phase, use the prim algorithm to generate the single-phase topological adjacency matrix for the characteristic coefficient matrix, and finally combine the obtained three-phase adjacency matrix with the line Impedance information and geographic information coordinates are fused to form a power information map of the entire distribution station area; it can solve the problems of high hardware cost, inability to determine the node load phase, and long calculation time in the traditional topology generation and parameter identification methods.

Description

technical field [0001] The invention relates to a method and system for generating a power impedance topology map of a distribution station area, belonging to the technical field of distribution station areas. Background technique [0002] With the third energy revolution and the continuous development of new information technologies represented by the Internet of Things, cloud computing, and big data, the demand for power system informatization continues to increase, and the low-voltage distribution network is directly connected to users as a distribution network The "nerve endings" of the station contain massive amounts of data information. If we can make full use of this information to conduct comprehensive and real-time observations of the station area, it will help the station area to achieve fault location, line loss management, and car charging pile site selection. It is very necessary to have an impedance topology map that can correctly reflect various information in...

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Problems solved by technology

[0005] Aiming at the defects of the prior art, the purpose of the present invention is to provide an impedance topology diagram of the distribution station area generated by adjacency matrix and particle swarm algorithm, which can solve the problem that the hardware cost is too high in the traditional topology generation and parameter identification methods. Determining the node load phase, long calculation time and other issues; the method and system for generating the distribution station area power impedance topology map that can obtain the complete station area topology and meet the real-time requirements of line impedance identification

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