Novel intelligent lock for back screen cabinet of protection screen

Abstract

The invention relates to a novel intelligent lock for a back screen cabinet of a protection screen. The novel intelligent lock comprises a temperature sensing part, an intelligent control part and an execution part, wherein the temperature sensing part is used for detecting and recognizing a temperature and transmitting a recognition result to the intelligent control part; the intelligent control part is used for receiving a signal of the temperature sensing part, making logic judgment and outputting a logic judgment result; and the execution part is used for executing starting or closing operation after receiving the judgment result. On the basis of temperature detection and recognition, intelligent control is achieved by programming of a programmable logic controller (PLC), and the novel intelligent lock which has a temperature detection function and can be used for automatically adjusting an opening-closing angle of the protection screen with temperature change is finally provided.

Description

technical field [0001] The invention belongs to the field of power grid safety and protection, and relates to a protective screen in a main control room, in particular to a novel intelligent lock for a screen cabinet behind the protective screen. Background technique [0002] The main control room of the substation gathers various functional screens such as protection, automation, and communication. The placement of each screen is relatively compact, and the horizontal distance between screens is small. The terminals of the wiring form a secondary circuit to realize the functions of measurement, protection and control of the primary equipment in the substation. [0003] The protection screen of the main control room is usually closed with a plug-in lock, which has the following defects: [0004] 1. In the hot summer, the air flow in the protective screen is very poor, and the stuffy gas will affect the wiring on the terminal block, resulting in the occurrence of virtual con...

AI Technical Summary

Problems solved by technology

[0004] 1. In the hot summer, the air flow in the protective screen is very poor, and the stuffy gas will affect the wiring on the terminal block, resulting in the occurrence of virtual connections, causing the secondary circuit to be disconnected, and the protection and protection of the primary equipment in the substation. Control functions pose a threat

[0005] 2. The plug-in lock made of plastic material is usually pasted on the rear cabinet door. The glue that sticks will liquefy under the condition of high air flow temperature, resulting in loosening of the plug-in lock.

[0006] 3. It is inconvenient to unlock the cabinet door behind the protective screen. A special key is required to open and close the plate lock. If the key is lost and the operating personnel or maintenance personnel do not carry it with them, the cabinet door behind the protective screen cannot be opened.

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