Partial discharge abnormal wave detection device and detection method
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. The effect of noise ratio
Active Publication Date: 2021-01-26
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 with reference to the drawings and specific embodiments.
[0061]The invention provides a partial discharge abnormal wave detection device, such asFigure 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 high voltage power supply The input end of the amplifier a2 is connected, and the high voltage output end of the high voltage power amplifier a2 is divided into two ways, one of which is connected to a protective impedance 9 and one end of the protective impedance 9 is used to connect to the high voltage output terminal of the high voltage power amplifier a2, and the protective impedance 9 The other end of is used to connect to one end of the insulation defect sample 8 to be tested, and the other end of the insulation defec...
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The invention discloses a special-shaped wave detection device for partial discharge, which includes an arbitrary signal generator a, a high-voltage power 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 in laboratories to detect the discharge capacity and discharge amplitude of insulation defect partial discharge. The invention also discloses a partial discharge abnormal wave detection method, specifically: step 1: prepare a typical insulation defect sample of power equipment, and build a partial discharge abnormal wave detection device; step 2: design the abnormal wave waveform, and detect and verify the abnormal wave Performance, save all the abnormal waves that have been verified to have no distortion and can be stably used for partial discharge research; Step 3: Apply the partial discharge abnormal wave detection device built in step 1 and the distortion-free and stable wave saved in step 2 The special-shaped wave is used for the partial discharge experiment operation of the special-shaped wave for the insulation defect sample, and the best special-shaped wave is matched for it.
Description
Technical field[0001]The invention belongs to the technical field of electrical equipment insulation detection devices, and specifically relates to a partial discharge abnormal wave detection device, and the invention also relates to an abnormal wave detection method using the device for partial discharge.Background technique[0002]Partial discharge, as a non-destructive test, allows us to grasp the insulation status of power equipment. The problem of the equipment is discovered in time and maintenance measures are taken to ensure the safe operation of the equipment, which has attracted more and more attention. Various phenomena of electricity, light, sound, heat, etc. will be generated in the process of partial discharge. Therefore, the detection methods of partial discharge detection have correspondingly appeared electric detection method, light measurement method, acoustic measurement method and infrared thermal measurement method.[1]. According to the different nature of the meas...
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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