Special-shaped wave detection device and method for partial discharge
A technology of partial discharge and detection device, applied in the direction of measurement device, measurement of electricity, measurement of electric variables, etc., can solve the problems of insufficient information, low signal-to-noise ratio, etc., to shorten the time and process, high resolution, short time Effect
Active Publication Date: 2019-08-20
XI'AN POLYTECHNIC UNIVERSITY
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[0009] The object of the present invention is to also provide a partial discharge irregular wave detection method, which solves the problems of low signal-to-noise ratio and insufficient information in the existing pulse current method partial discharge detection technology
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[0060] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0061] The invention provides a partial discharge irregular wave detection device, such as Figure 8 As shown, it includes arbitrary signal generator a1, high-voltage power amplifier a2, high-frequency voltage divider a3, Rogowski coil 4, data acquisition card 5 and pre-micro signal amplifier 6; the output terminal of arbitrary signal generator a1 and the high-voltage power supply The input terminal of the amplifier a2 is connected, and the high-voltage output terminal of the high-voltage power amplifier a2 is divided into two circuits, one of which is connected with a protective impedance 9, and one end of the protective impedance 9 is used to connect with the high-voltage output terminal of the high-voltage power amplifier a2, and the protective impedance 9 The other end is used to connect with one end of the insulation defect sample 8 to b...
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The invention discloses a special-shaped wave detection device for partial discharge. The special-shaped wave detection device comprises an any signal generator a, a high-voltage power source amplifier a, a high-frequency voltage divider a, a Rogowski coil, a data acquisition card, a pre-micro signal amplifier and a PC. The device can be used for detecting the discharge capacity and discharge amplitude of the partial discharge of an insulation defect in a laboratory. The invention further discloses a special-shaped wave detection method for partial discharge. The method specifically comprisesthe following steps that: step 1, a power equipment typical insulation defect test sample is prepared, and a special-shaped wave detection device for local discharge is built; step 2, a special-shapedwave waveform is designed, the performance of special-shaped waves is detected and verified, and all special-shaped waves which are verified as distortion-free special-shaped waves and can be stablyused for partial discharge research are stored; and step 3, special-shaped wave partial discharge experiment operation is performed on the insulation defect test sample through the special-shaped wavedetection device for partial discharge which is built in the step 1 and the stable and distortion-free special-shaped waves which are stored in the step 2, and optimal special-shaped waves can be provided for the insulation defect test sample by means of matching.
Description
technical field [0001] The invention belongs to the technical field of insulation detection devices for electric equipment, and in particular relates to a partial discharge irregular wave detection device, and also relates to a partial discharge abnormal wave detection method using the device. Background technique [0002] As a non-destructive test, partial discharge allows us to grasp the insulation status of power equipment. To find out the problems of the equipment in time and take maintenance measures to ensure the safe operation of the equipment, so people pay more and more attention. In the process of partial discharge, various electric, light, sound, heat and other phenomena will be generated. Therefore, partial discharge detection technology has corresponding detection methods such as electrical detection method, optical measurement method, acoustic measurement method and infrared thermal measurement method. [1] . According to the different properties of the measur...
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IPC IPC(8): G01R31/12
CPCG01R31/1227
Inventor 曹雯宋倩文朱永灿赵隆田毅黄新波申巍
Owner XI'AN POLYTECHNIC UNIVERSITY