Small-size large-capacity voltage withstanding device used for GIS test

Abstract

The invention relates to a small-size large-capacity voltage-withstanding device used for a GIS test. The device is connected with an external power supply and a to-be-tested GIS device respectively to achieve the voltage-withstanding experiment of the GIS device; the small-size large-capacity voltage-withstanding device includes a whole movement chassis, a reactance module, a capacitance module and an isolation impedance module, wherein the reactance module, the capacitance module and the isolation impedance module are arranged on the whole movement chassis; the reactance module, the capacitance module and the isolation impedance module are all metal closed modules insulated with SF6 gas and are connected together to form a series resonance voltage boosting circuit, the input end of the reactance module is connected with the external power supply, the output end of the reactance module is connected with the input end of the isolation impedance module, and the output end of the isolation impedance module is connected with the capacitance module and the to-be-tested GIS device respectively. Compared with the prior art, the device has the advantages of being large in capacity, small in size and movable, having the partial discharge measurement function of the impulse current method and the like.

Description

technical field [0001] The invention relates to a substation device, in particular to a miniaturized and large-capacity withstand voltage device used in GIS tests. Background technique [0002] There are two ways of GIS withstand voltage: series resonance withstand voltage and transformer power frequency withstand voltage. The reactor is a key equipment in the series resonance withstand voltage test method. The traditional oil-immersed reactor needs to ensure the insulation distance, which means that the test site must have enough space to meet the requirements of the safety distance. In the application environment with relatively narrow internal space, such as underground substations and indoor substations, the use of traditional series resonance test devices will be greatly restricted. [0003] For large and medium-sized cities with relatively concentrated electricity loads, due to the shortage of land resources and the harsh external natural environment, it is necessary ...

AI Technical Summary

Problems solved by technology

However, at this stage, the capacity of the trial-produced test equipment is small, and the weight of the equipment is relatively hea...

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