Power distribution network loop closing current switching method and device, and power distribution terminal

Abstract

The embodiment of the invention provides a power distribution network loop closing current switching method and a device, and a power distribution terminal, which are applied to loop closing operation of a power distribution network. The method comprises the following steps: receiving a loop closing command sent by a main station; acquiring real-time parameters of a power network; and comparing the real-time parameters of the power network and a loop closing constant value, and judging whether a current condition meets a loop closing operation condition or not, if yes, carrying out loop closing operation according to the loop closing command. The embodiment of the invention provides a power distribution network loop closing current switching scheme with dual judgment of the main station and the terminal; the main station sends the loop closing command to the power distribution terminal after judging that the power distribution network meets the requirements of loop closing; the power distribution terminal also needs to acquire the real-time parameters of the power network, and compares the real-time parameters of the power network and the loop closing constant value after receiving the loop-closing command sent by the main station, and if the loop closing operation condition is met, loop closing operation is carried out according to the loop closing command; and the dual-judgment manner can reliably ensure the accuracy of loop closing current switching operation, and prevents faulty operation of loop closing.

Description

technical field [0001] The present invention relates to the field of electric power systems, and more specifically relates to a method, device and power distribution terminal for power distribution network closing and switching. Background technique [0002] With the rapid development of distribution network construction, the technology of power distribution network closing and switching has been gradually improved, and two-way power supply has become a common power supply mode. The biggest feature of the distribution network is the closed-loop structure and the power supply mode of open-loop operation. When the load is reversed or the line is overhauled, the power outage time can be reduced and the reliability of power supply can be improved through the closed-loop power exchange operation. [0003] The existing distribution network closing loop switching technology mainly uses the master station to perform modeling calculation and analysis based on the grid parameters uplo...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method and device for power distribution network closing and switching, and a power distribution terminal to solve the misoperation of power distribution terminal ring closing

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