Coded disc type disconnecting link state laser monitoring device

Abstract

A coded disc type disconnecting link state laser monitoring device comprises a laser transmitter, a photosensitive element receiver and a coded disc. The laser transmitter is used for transmitting laser; the photosensitive element receiver is used for receiving the laser emitted by the laser emitter and outputting an electric signal for representing the state change of the disconnecting link when receiving the laser; the coded disc is arranged on a rotating transmission shaft of a disconnecting link body of the disconnecting link, and when the disconnecting link acts, the rotating transmission shaft drives the coded disc to rotate; the coded disc is arranged between the laser emitter and the photosensitive element receiver, a grating is etched on the coded disc, and when the coded disc rotates, laser emitted by the laser emitter can be received by the photosensitive element receiver after penetrating through the grating. The coded disc type laser monitoring device is used for monitoring the state of the disconnecting link, and the coded disc type laser monitoring device is simple in structure, convenient to operate and high in laser monitoring accuracy, so that the state of the disconnecting link of the transformer substation can be simply, conveniently, accurately and efficiently monitored, and the safety is ensured.

Description

technical field [0001] The application relates to the technical field of substation monitoring, in particular to a laser monitoring device for the state of a code disc knife switch. Background technique [0002] The isolation switch of the substation has an important influence on the safe operation of the substation. Especially in the context of continuous promotion of unattended stations and power grid automation in recent years, it is even more required that the operational safety of the isolation switch of the substation can be effectively improved. The substation isolation switch should have at least two non-electricity confirmation methods with different principles or non-homologous positions to confirm the operating status of the isolation switch and whether it has been operated in place, so as to prevent the isolation switch from not opening and closing in place and misoperation happened. [0003] At present, the auxiliary contact state acquisition method is mostly ...

AI Technical Summary

Problems solved by technology

However, the attitude sensor monitoring method mainly has the following two problems. First, the attitude sensor is fixed on the knife switch mechanism, and its cable rotates with the knife switch mechanism, which may cause winding and stagnation, and there is a greater safety risk

The second is that the attitude sensor is large in size, difficult to install and debug, high in cost, poor in versatility, and difficult in operation and maintenance, which is not conducive to large-scale promotion and application

However, the image transmission speed of the video monitoring method is slow, the bandwidth requirement is high, the operation time is long, and it is inconvenient to capture the monitoring object. When a large number of switches are installed in the substation, it is easy to cause false monitoring.

[0008] Therefore, the existing technology cannot simply, conveniently, accurately and efficiently monitor the switch status of the substation to ensure safety

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