Frozen current-based method and system for automatic identification of topological relation of power distribution network courts

Abstract

The invention provides a frozen current-based method and system for automatic identification of a topological relation of power distribution network courts. The method comprises the following steps: setting a frozen current transaction threshold value, judging whether current transaction exceeds the set threshold value or not, and if so, transmitting a freezing command to all low-voltage fault sensors in a broadcasting manner, and freezing current information at the same time; reading the current freezing data with timestamps of all the low-voltage fault sensors in sequence in a polling mode, calculating current freezing data and the last freezing data, and determining relevant parameters including current increment, harmonic increment and leakage current increment information; and performing data grouping and branch analysis according to the related parameters of the frozen current, performing hierarchical analysis according to different main and branch identification results, and determining a topological structure of the power distribution network courts. According to the invention, low-voltage topology automatic identification can be realized.

Description

technical field [0001] The invention belongs to the technical field of electricity consumption information collection, and in particular relates to a method and system for automatically identifying topological relations of distribution network station areas based on freezing current. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The automatic identification of the topology relationship of the electrical network in the distribution station area is essentially to reliably obtain the connection relationship between the electrical equipment in the park, the community, and the building and its power supply, and store these connection relationships in a certain way. At present, the power company is vigorously carrying out the work of connecting operation and distribution. Accurate identification of the network topology in the station area is c...

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Problems solved by technology

[0004] However, due to the large number of low-voltage distribution stations, complex electrical wiring, and the phenomenon of private construction and random construction, due to historical and control reasons, there is no unified standard for user topology network planning. Accurate identification of power grid topology has always been a difficult problem in power supply services. , despite the general survey of meters and the verification of the relationship between boxes and meters, it is still difficult to grasp the network topology of the distribution station area in a timely and accurate manner

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