Spare power automatic switching system self-adaptive to change of 10kV bus wiring mode

Abstract

The invention provides a spare power automatic switching system adaptive to change of a 10kV bus wiring mode, which comprises a first spare power automatic switching device, a second spare power automatic switching device, a mode switcher and a bus wiring mode instruction platform, and is characterized in that the mode switcher is connected with the bus wiring mode instruction platform, the bus wiring mode change instruction information transmitted by the bus wiring mode instruction platform is received, the bus wiring modes are switched, and the two sets of spare power automatic switching devices respectively control the on-off of the first section switch, the first main transformer low-voltage switch and the second main transformer low-voltage double-branch switch according to the acquired corresponding electrical quantities and switching values, the second section switch, the third main transformer low-voltage switch and the second main transformer low-voltage double-branch switch are controlled to be switched on and off, so that when the bus wiring mode is changed into a single-bus single-section two-section bus wiring mode and one section of bus is in a double-branch incomingline wiring mode, and the bus wiring mode is changed into a single-bus single-section two-section bus wiring mode. An existing spare power automatic switching device cannot meet the requirement that aspare power automatic switching function can be achieved when a double-branch main transformer is lowered and any branch operates.

Description

technical field [0001] The invention relates to the technical field of self-adaptive switching of 10kV busbar backup and automatic switching, and more specifically, relates to a backup and self-switching system adaptive to changes in the wiring mode of 10kV busbar. Background technique [0002] The backup power automatic switch-on device (hereinafter referred to as the standby automatic switch-on device) is the key equipment to improve the reliability of power supply in the power system. The normal operating voltage of the busbar ensures reliable power supply for users. [0003] As a substation 10kV bus that collects, distributes and directly transmits electric energy to the power supply load, it is generally used such as figure 1 As shown in the typical design of the "single-bus double-section four-section bus" wiring method, the 10kV standby automatic switching device has the function of two 10kV four-section buses as a hidden backup and three main transformers as a stand...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that when the wiring mode of the 10kV bus is changed to a single bus, single section, two sections of bus and one of the bus is double-branch incoming wiring, the existing 10kV standby automatic switching device cannot meet the requirements of the double-branch main transformer to lower any branch operation The problem that the backup and automatic switching function can be realized, the present invention proposes a backup and automatic switching system that adapts to changes in the wiring mode of the 10kV bus to ensure the power supply reliability of the 10kV distribution network

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