Insulating property monitoring device and method of high-voltage switching apparatus

Abstract

The invention relates to an insulating property monitoring device and an insulating property monitoring method of a high-voltage switching apparatus. The monitoring device comprises a sampling resistor and a sample processing device which is connected with the sampling resistor, wherein the sampling resistor and the sample processing device are arranged between the insulating shell of the high-voltage switching apparatus and the ground; and the sample processing device comprises a power supply device which provides power for the sample processing device and a transducer which is used for transmitting a signal. The monitoring method comprises the following steps that: the sampling resistor and the sample processing device which is connected with the resistor are arranged between the insulating shell of the high-voltage switching apparatus and the ground; the sample processing device converts a current or voltage signal of the sampling resistor into the standard current or voltage signal and outputs the standard current or voltage signal to externally connected equipment; and the externally connected equipment is compared with a preset value according to the standard current or voltage signal so as to judge whether the insulating property of the shell of the high-voltage switching apparatus is good or not. The device and the method of the invention have the advantage of timely monitoring the insulating property of the shell of the high-voltage switching apparatus and saving the maintenance cost.

Description

technical field [0001] The invention belongs to the technical field of structural design of high-voltage switchgear, and in particular relates to a device and method for monitoring the insulation performance of high-voltage switchgear. Background technique [0002] Vacuum high-voltage circuit breakers are used to switch and disconnect normal circuits. Faulty circuits or high-voltage electrical equipment used to isolate power supplies and realize safe grounding. However, as the use time increases, the insulation performance of the high-voltage switchgear housing will decrease, and if it decreases to a certain extent, the high-voltage switchgear must be replaced. How to timely monitor the insulation performance of high-voltage switchgear, judge the aging state of the high-voltage switchgear shell, and accurately and effectively judge the scope of maintenance are technical problems that need to be solved urgently in this industry. Contents of the invention [0003] The first...

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Problems solved by technology

[0002] Vacuum high-voltage circuit breakers are used to switch and disconnect normal circuits. Faulty circuits or high-voltage electrical equipment used to isolate power supplies and realize safe grounding. However, as the use time increases, the insulation performance of the high-voltage switchgear housing will decrease, and if it decreases to a certain extent, the high-voltage switchgear must be replaced.

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