GIS detection device and GIS detection system

Abstract

The invention provides a GIS detection device and a GIS detection system. The GIS detection device comprises a flange, a [Mu] PMT and an infrared pyroelectric sensor, wherein a first boss and a secondboss are arranged on the flange, a first mounting groove is formed in the first boss, and a second mounting groove is formed in the second boss; a first socket is arranged on the top of the first boss, the [Mu] PMT is fixedly arranged inside the first mounting groove, and the [Mu] PMT is electrically connected to the first socket; a second socket is arranged on the top of the second boss, the infrared pyroelectric sensor is fixedly arranged inside the second mounting groove, and the infrared pyroelectric sensor is electrically connected to the second socket. According to the GIS detection device and the GIS detection system provided by the invention, the [Mu] PMT and the infrared pyroelectric sensor are mounted simultaneously by using the flange, simultaneous collection and monitoring onlocal discharge and heating information inside a GIS closed pipeline are realized, data analysis is carried out on accident causes, and the GIS detection device and the GIS detection system are also practically significant for perfecting the early warning and diagnosis system of failures.

Description

technical field [0001] The present application relates to the technical field of state detection of gas insulated switchgear, in particular to a GIS detection device and system. Background technique [0002] Gas insulated switchgear (GIS) is one of the most expensive and important equipment in the power system, and its safe and stable operation will have a significant impact on the reliability and security of the entire power grid. During the production, transportation, assembly and operation of gas-insulated electrical equipment such as gas-insulated switches, gas transmission pipelines, gas-insulated transformers, and closed switchgears, insulation defects such as conductor tips or scratches, floating potentials, or abnormal surfaces of insulators will inevitably occur. It causes partial discharge under the action of electric field, and even causes insulation breakdown under the action of overvoltage. With the continuous increase and improvement of the grid scale and volt...

AI Technical Summary

Problems solved by technology

Since the sensor has no electrical connection with the GIS equipment, it has a good ability to resist electromagnetic interference, and ultrasonic waves can also locate the fault point; but because the propagation speed of sound waves in SF6 is low, and the high-frequency sound signal decays very quickly , the sound wave will be reflected at the junction of different materials, so it will affect the judgment accuracy of the ultrasonic sensor

[0004] The existing partial discharge detection technology in GIS generally has the problem of poor detection sensitivity, and the installation of the sensor is not convenient and stable enough. Therefore, it is necessary to design a partial discharge detection device that is easy to install and reliable in detection to monitor GIS equipment.

And partial discharge is often accompanied by a significant local temperature rise inside the GIS. When the temperature exceeds the normal operating level, the life of the insulating material in the GIS will be shortened, and the reliability of the insulation system will decrease.

Under the long-term effect of partial discharge and high temperature, the potential failure of GIS will gradually enlarge, and eventually lead to the occurrence of accidents

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