AC/DC power supply transfer box and comprehensive automation transformation method

Abstract

The invention discloses an AC / DC power supply transfer box and a comprehensive automation transformation method. The AC / DC power supply transfer box comprises a control main power supply transfer part, wherein the control main power supply transfer part comprises multiple control power supply incoming interfaces, multiple control power supply outgoing interfaces and a first terminal bar, the first terminal bar is used for connecting the control power supply incoming interfaces and the control power supply outgoing interfaces, and the control main power supply transfer part is used for providing a transfer interface between small bus incoming cables of a top control main power supply of a switch cabinet panel and control power supply outgoing cables of an integrated power supply panel. In the comprehensive automation transformation engineering of a substation, the installation and replacement operation of the integrated power supply panel can be completed by utilizing the AC / DC power supply transfer box on the premise of no power outage of a switch cabinet when an AC / DC power supply panel is replaced, thus, the device outage frequency in the transformation engineering is reduced, the construction process is optimized, the repeated labor is reduced, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to the field of switching devices for new and old AC and DC power sources in a secondary system of a substation, in particular to an AC and DC power source switching box and a comprehensive self-retrofitting method. Background technique [0002] In the comprehensive self-renovation project of the substation, due to the characteristics of the comprehensive self-retrofit, it is often necessary to add a large number of screens. Considering the problems of the AC and DC loads of the secondary system, such as the prohibition of power outages and insufficient spare screen space, the comprehensive automatic In the renovation project, the integrated power supply screen should be installed first, and other newly added protection measurement and control screens should be installed at the original installation site of the AC and DC power supply screen. Comprehensive self-retrofit construction process such as Image 6 As shown, firstly, the i...

AI Technical Summary

Problems solved by technology

[0003] The main problems in the construction process of the integrated power supply in the existing substation comprehensive self-retrofit: (1) When the integrated AC and DC power supply is laid into the high-voltage switchgear, it is necessary to cut off the power to the switchgear, but in the later comprehensive self-retrofit, the switchgear needs to be Cabinets apply for power outages, which will result in repeated power outages for one equipment, which increases the risk of power grid operation and reduces the reliability of power supply

(2) Increased construction workload, resulting in repetitive labor in the construction process, reducing construction efficiency

(3) In the later comprehensive self-transformation, when the original control and measurement cables in the switch cabinet are removed, it is possible to touch the newly laid AC and DC power cables by mistake, causing AC and DC power outages, and the protection, measurement and control loses power supply

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