Detection device for disconnecting link opening and closing in place

Abstract

The invention discloses a detection device for disconnecting link opening and closing in place, comprising an auxiliary contact of disconnecting link movement, wherein the auxiliary contact of disconnecting link movement is connected with an operation protector, a condenser reflector is arranged on a moving contact of the disconnecting link, light transmitting and receiving devices are installed on the security platform of the disconnecting link base, one set of light transmitting and receiving devices transmit and receive the light beam reflected back by the condenser reflector of the disconnecting link when the disconnecting link is closed in place, another set of light transmitting and receiving devices transmit and receive the light beam reflected back by the condenser reflector of the disconnecting link when the disconnecting link is opened in place. The output terminal of the contrast and judgment circuit of the light transmitting and receiving device is connected with the auxiliary contact of the disconnecting link so as to judge whether the opening and closing of the disconnecting link is in place. The signal is transmitted to the operation protector as monitoring signal for remote operation. Compared with the prior art, the invention can effectively detect the condition of the opening and closing of the disconnecting link, thereby avoiding the occurrence of the vicious accidents caused by misoperation as the opening and closing of the disconnecting link is out of place. The invention can be widely applied in devices such as disconnection disconnecting linkes, grounding disconnecting linkes and load disconnecting linkes, etc.

Description

Technical field [0001] The invention belongs to the technical field of electrical equipment of a power system, and specifically relates to a detection device for opening and closing of a knife switch. Background technique [0002] Based on the lessons learned from countless accidents, combined with the practical experience of Chinese and foreign electrical operations, in order to effectively prevent personal and major equipment accidents caused by the misoperation of electrical equipment, the "five preventions" of electrical equipment were proposed in the early 1990s. It has formulated the management, operation, design and use principles of electrical error prevention. It has been listed in the "Twenty-five Key Requirements for Preventing Major Accidents in Electric Power Production". According to regulations, the design of error prevention devices should follow the principles Yes: All high-voltage equipment that may cause misoperation should be equipped with anti-misoperation de...

AI Technical Summary

Problems solved by technology

During this action process, if the mechanism is stuck, deformed, damaged and other reasons cause the knife switch to not move in place, and the auxiliary contact outputs the corresponding action completion signal, the lock will fail, which will easily cause misoperation accidents

Although the substations are equipped with "five prevention" devices as required, and the personnel on duty are also very familiar with the requirements of the "five preventions", misoperation accidents caused by human and equipment factors still occur from time to time

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