Intelligent monitoring device and method for electrical contact state of gas-insulated switch contacts

Abstract

The invention provides an intelligent monitoring device and method for an electric contact state of a gas-insulation high-voltage switch contactor. The device comprises a temperature sensor and an intelligent electronic device; the temperature sensor is used for sensing a temperature value of the gas-insulation high-voltage switch contactor, and the intelligent electronic device is used for collecting the temperature value sensed by the temperature sensor, also synchronously collecting a load current sampling value flowing through the gas-insulation switch contactor and analyzing and evaluating the electric contact state of the gas-insulation high-voltage switch contactor. By adopting the device and the method, the problem that the electric contact state of the gas-insulation high-voltage switch device contactor cannot be effectively monitored can be solved. By utilizing the intelligent monitoring device, a power grid dispatching control system and a production management system can control the electric contact state of the gas-insulation high-voltage switch contactor in real time, and the initiative protection control of a power grid on the electric contact flaw or the electric contact failure of the gas-insulation high-voltage switch contactor can be realized, so that the running reliability of the power grid can be improved.

Description

technical field [0001] The invention relates to a device and a method, in particular to an intelligent monitoring device and method for the electrical contact state of a gas-insulated switch contact. Background technique [0002] Poor electrical contact of contacts is one of the common defects of high-voltage switchgear. In severe cases, it will burn parts and even cause accidents. Therefore, the electrical contact state of the contacts is related to the safety of equipment and power grid. For gas-insulated high-voltage switchgear, since the contacts are enclosed in a metal gas chamber, its electrical contact status is not easy to be monitored during operation. When the cumulative ablation of the contacts reaches a certain level, or mechanical defects occur, poor electrical contact will occur. As the resistance increases, under the action of the load current, the temperature rise of the poor contact part may exceed the limit value, which in turn will further expand the defe...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art above, the present invention provides an intelligent monitoring device and method for the electrical contact state of the gas-insulated high-voltage switchgear, which solves the problem that the electrical contact state of the gas-insulated high-voltage switchgear cannot be effectively monitored

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