Low voltage district electric energy meter phase line identification method

Abstract

The present invention discloses a low voltage district electric energy meter phase line identification method which is as follows: a concentrator and electric energy meters appoint phase line mark code and guidance code formats; the concentrator sends phase line request communication frames to the electric energy meters in different time and in different phases to request the electric energy meters to return phase line information of each electric energy meter; the electric energy meters constitute phase line reply communication frames, add phase line mark codes into guidance codes of the phase line reply communication frames, and send to the concentrator by the phase lines of the electric energy meters; and the concentrator completes the identification of the phase lines of the electric energy meters according to the identification of data content in the phase line reply communication frames and the phase line mark codes in the guidance codes. According to the method, by the low voltage carrier wave communication mode of sending and replying in different time and in different phases, the identification works of the phase lines of the electric energy meters can be automatically completed, in the manner of adding of the phase line mark codes after the guidance codes of the communication frames, dual identification of the phase lines of the electric energy meters can be completed, and real, reliable and accurate results of the identification of the phase lines of the electric energy meters can be ensured.

Description

technical field [0001] The invention specifically relates to a method for identifying the phase line where the electric meter is located in a low-voltage station area. Background technique [0002] With the development of the country's economy and technology, power system automation has been greatly developed. As a device for measuring point energy, the electric meter plays an irreplaceable role in the power system. At this stage, the layout of the low-voltage station area of ​​the power grid is as follows: figure 1 As shown: the low-voltage side of the transformer is the starting end of a low-voltage station area, and the station area master meter and the station area communication concentrator are installed on the low-voltage side of the transformer. The concentrator is connected to each electric meter in the station area through the low-voltage power supply network; centralized The device uses low-voltage carrier to communicate with each meter. The low-voltage carrier ...

AI Technical Summary

Problems solved by technology

At present, the power supply company has accumulated large-scale low-voltage power supply customers with a large number of meters. The power supply company dispatches operators to the location of the meters, all relying on manual work to check and mark the phase lines where the meters are located. Due to business impacts such as meter replacement, manual marking cannot be synchronized in time, and there is a phenomenon that the meter is replaced immediately after marking, which objectively results in a situation where the phase lines of the meter are almost impossible to sort out

Phase-separated data cannot be consistent with the actual situation, power supply phase-separated refined management cannot be realized, and transformer operation is uneconomical

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