CT self-powered switchgear testing device and system thereof

Abstract

A CT self-powered switchgear testing device comprises the components of a temperature / humidity / current measuring module which measures the temperature and current of a switch plum blossom contact andenvironment temperature humidity data in the switchgear; an ozone measuring module which measures ozone concentration data in the switchgear; a first communication module; a second communication module; a powering module which automatically senses energy from high-voltage electrified equipment for supplying power to the ozone measuring module, the first communication module and the second communication module; and a metal annular band on which the temperature / humidity / current measuring module, the ozone measuring module and the powering module are mounted, wherein two ends of the metal annularband are connected through buckles, thereby forming a closed loop which is snapped with the edge of the switch plum blossom contact. The CT self-powered switchgear testing device has an advantages ofaccurate measurement for the temperature and the current of the switch contact, an environment temperature, an environment humidity and an ozone content in switch operation, thereby realizing evaluation to an insulating state.

Description

technical field [0001] The invention relates to the technical field of power system detection, in particular to a detection device and system for a CT self-feeding switch cabinet. Background technique [0002] At present, the handcart switchgear is widely used in the power supply system. In the high-voltage circuit breaker handcart structure, there is a certain contact resistance between the moving contact and the static contact. If the contact resistance is too large, a large part of the electric energy will be lost in the form of heat radiation, making the contact area The temperature rises, thereby accelerating the oxidation of the contact between the dynamic and static contacts. The result of oxidation will further increase the contact resistance value, and then the problem of excessive temperature in the contact area will fall into a vicious circle, and even the contact will be burned by arcing. Traditional temperature measurement methods such as infrared and temperat...

AI Technical Summary

Problems solved by technology

In the high-voltage circuit breaker handcart structure, there is a certain contact resistance between the moving contact and the static contact. If the contact resistance is too large, a large part of the electric energy will be lost in the form of heat radiation, making the contact area The temperature rises, thereby accelerating the oxidation of the contact between the dynamic and static contacts

The result of oxidation will lead to a further increase in the contact resistance value, and then the problem of excessive temperature in the contact area will fall into a vicious circle, and even the contact will be damaged by arcing.

Traditional infrared, temperature-indicating wax sheets and other temperature measurement methods have long cycles, complex construction, low efficiency, and inconvenient management. When a fault occurs, it will take a lot of manpower to physically check and re-lay

However, in certain occasions, the monitoring points are scattered, the environment is closed or there is high voltage, and many temperature measurement methods cannot realize the measurement work.

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