Power distribution network medium-low voltage topology identification method and system based on power line carrier and information fusion

Abstract

The invention discloses a power distribution network medium-low voltage topology identification method and system, and the method comprises the steps that a power distribution main station transmits aline transformer topology updating instruction to an intelligent distribution transformer terminal, thereby enabling the intelligent distribution transformer terminal to generate a characteristic current modulation pulse, and enabling the characteristic current modulation pulse to be coupled to a medium-voltage line through a power distribution transformer; the intelligent power distribution terminal detects the characteristic current modulation pulse, analyzes the characteristic current modulation pulse to judge a medium-voltage line to which the characteristic current modulation pulse belongs, and sends topology updating information to the power distribution main station; the power distribution main station obtains a voltage line transformation topological relation in the power distribution network according to the received topological updating information; each intelligent distribution transformer terminal carries out low-voltage topology identification on the area where the intelligent distribution transformer terminal is located by means of broadband carrier communication, and sends low-voltage topology identification information to the power distribution main station; and the power distribution main station updates the real-time topological structure according to the voltage line transformation topological relation and the low-voltage topological identification information in the power distribution network. According to the power distribution network medium and low voltage topology identification method and system, manual configuration is not needed, the identification result is complete and accurate, and accurate topology information support can be provided for intelligent application of the power distribution network.

Description

technical field [0001] The invention relates to the technical field of power system distribution automation, in particular to a middle and low voltage topology identification method of a power distribution network based on power carrier and information fusion. Background technique [0002] At present, electric power enterprises mainly maintain manual maintenance when maintaining the topology of the power grid. Due to the large scale of the distribution network, the large number of equipment, and the complex structure, relying on manual maintenance of the distribution network topology model has a huge workload and poor visibility of model information, making it difficult to ensure power distribution. Integrity and correctness of the network topology model, there are problems such as low quality of power distribution topology model, incomplete topology model and connection confusion, model changes cannot be sensed, and consistency cannot be guaranteed. Contents of the inventi...

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Problems solved by technology

[0002] At present, electric power enterprises mainly maintain manual maintenance when maintaining the topology of the power grid. Due to the large scale of the distribution network, the large number of equipment, and the complex structure, relying on manual maintenance of the distribution network topology model has a huge workload and poor visibility of model information, making it difficult to ensure power distribution. Integrity and correctness of the network topology model, there are problems such as low quality of power distribution topology model, incomplete topology model and connection confusion, model changes cannot be perceived, and consistency cannot be guaranteed.

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