All-electric partial discharge detection device and detection method

Abstract

The invention discloses an all-electric partial discharge detection device and detection method. The device includes a high-voltage charging unit, a capacitance matrix unit, a voltage regulating unit,an inverting unit, a power electronic switch unit, an inductance matrix unit, a measuring unit and a host system. The output terminal of the high-voltage charging unit is connected with the input terminal of the capacitance matrix unit, and the high-voltage charging unit is used for providing power for the capacitance matrix unit. The output terminal of the capacitance matrix unit is connected with the input terminal of the voltage regulating unit, and the output terminal of the voltage regulating unit is connected with the input terminal of the inverting unit. The power electronic switch unit is connected in parallel between the two output terminals of the inverting unit. One output terminal of the inverting unit is grounded, and the other output terminal is connected in series with theinductance matrix unit. The inductance matrix unit is used for being connected with a tested product. The measuring unit is connected in parallel to the two ends of the tested product. The host systemis connected with the control pole of the switching element in each unit. No additional high-power power supply is needed, and the detection efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of electric equipment insulation state detection, and in particular relates to an all-electric partial discharge detection device and a detection method. Background technique [0002] With the development of the times, people's lives have gradually improved, and the country's electricity consumption has increased dramatically. In order to meet the growing demand for electricity, my country's power transmission network has developed rapidly, and the capacity and voltage level of power equipment have been continuously improved. The problem of insulation performance of power equipment is also becoming more and more acute. Large-capacity and high-voltage power equipment puts forward higher requirements for insulation state detection technology. [0003] In engineering, the withstand voltage test is mainly used to evaluate the insulation state of power equipment. However, some local non-penetrating defects may n...

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Problems solved by technology

[0007] The purpose of the present invention is to provide an all-electric partial discharge detection device and detection method to solve the problems that it is difficult to provide a high-power power supply on site and the detection efficiency is low in the current transmission power equipment detection test

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