Household-transformer relationship identification method and device for back-to-back distribution transformer

Abstract

The invention relates to a household-transformer relationship identification method and device for a back-to-back distribution transformer. The method comprises: calculating the voltage drop between the voltage of a first distribution transformer and the voltage of an electric energy meter to which the first distribution transformer belongs, and the voltage drop between the voltage of a second distribution transformer and the voltage of the electric energy meter to which the second distribution transformer belongs; acquiring electric energy meter voltage of the to-be-tested electric energy meter; assuming that the to-be-tested electric energy meter belongs to one of the back-to-back distribution transformers; for example, a first distribution transformer, reducing the voltage between the first distribution transformer voltage and the voltage of the electric energy meter to which the first distribution transformer belongs; adding the calculated voltage with the voltage of the electric energy meter to be tested to obtain the calculated voltage of the first distribution transformer, comparing the calculated voltage with the voltage of the first distribution transformer and the voltageof the second distribution transformer respectively, and confirming that the electric energy meter to be tested belongs to the first distribution transformer when the calculated voltage is closer tothe voltage of the first distribution transformer. According to the method and the device for identifying the electric household-transformer relationship, the identification accuracy of the electric household-transformer relationship is high, and the reliability of identifying the electric household-transformer relationship is improved.

Description

technical field [0001] The invention belongs to the technical field of electric power system monitoring, and in particular relates to a method and a device for identifying household transformer relationships of back-to-back distribution transformers. Background technique [0002] The State Grid Corporation of China proposed the concept of an electricity consumption information collection system in 2009. After years of exploration and construction, the coverage rate of smart meters with cost control functions has reached more than 95%. In 2018, a new generation of electricity consumption information collection system was proposed in combination with the new technology of big cloud material movement. The new generation of power consumption requires higher collection frequency and faster data processing capabilities. Among them, applications such as line loss analysis on the low-voltage side of the distribution transformer, remote fee control, remote recharging, and clock calib...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for identifying the relationship between household transformers of back-to-back distribution transformers, which is used to solve the problem of low reliability in the identification of household transformer relationships in the prior art

Images