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Examination and verification device for noncontact ultrasonic method partial discharge detector and examination and verification method thereof

An ultrasonic method, non-contact technology, applied in the direction of measuring devices, instruments, measuring electrical variables, etc., can solve the problem of uneven performance of non-contact ultrasonic partial discharge detectors, affecting the effectiveness and reliability of partial discharge detection results of power equipment, Hidden dangers in the safe operation of power equipment and other issues

Inactive Publication Date: 2016-09-21
HANGZHOU XIHU ELECTRONICS INST
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Problems solved by technology

This partial discharge detection method is called non-contact ultrasonic method. Due to the uneven performance of non-contact ultrasonic partial discharge detectors and the lack of a unified performance verification platform, the validity and reliability of the partial discharge detection results of power equipment are greatly affected. , will bring major hidden dangers to the safe operation of power equipment, so it is of great significance to design an assessment and verification design method for non-contact ultrasonic partial discharge detectors

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  • Examination and verification device for noncontact ultrasonic method partial discharge detector and examination and verification method thereof
  • Examination and verification device for noncontact ultrasonic method partial discharge detector and examination and verification method thereof
  • Examination and verification device for noncontact ultrasonic method partial discharge detector and examination and verification method thereof

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Embodiment Construction

[0042] Such as figure 1 , figure 2 As shown, the present invention proposes an assessment and verification device for a non-contact ultrasonic partial discharge detector, including a signal excitation source, an ultrasonic transducer module 1, a verification platform 2, a reference sensor, an oscilloscope, and a 50Ω coaxial cable , the tested instrument includes the tested sensor and partial discharge detector,

[0043] The signal excitation source is connected to the ultrasonic transducer module by a 50Ω coaxial cable, the signal excitation source is used as a signal source, and the ultrasonic transducer module is used as a signal transmitting device; the calibration platform 2 is provided with a scale The scale, the signal transmitting platform 4 and the signal receiving platform 3 are also respectively arranged on the verification platform, and the signal receiving platform can slide freely on the verification platform; the ultrasonic transducer module 1 is arranged on th...

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Abstract

The invention discloses an examination and verification device for a noncontact ultrasonic method partial discharge detector and an examination and verification method thereof. The device part comprises a signal excitation source, an ultrasonic transducer module, a verification platform, a reference sensor, an oscilloscope and a 50ohm coaxial cable. A detected instrument comprises a detected sensor and a partial discharge detector. The detectable items include sensitivity, detection frequency band, linearity and stability. The test method is easy to realize and easy and rapid to debug, and the test process is convenient and rapid so that the device is suitable for routine maintenance, testing, correction and other performance examination of the noncontact ultrasonic method partial discharge detector of the power detection industry and can guarantee effectiveness and reliability of the detection instrument.

Description

technical field [0001] The invention belongs to the technical field of high-voltage detection, and in particular relates to an assessment and verification device and method for a non-contact ultrasonic method partial discharge detector. Background technique [0002] In the field of high-voltage detection, there are many detection methods for partial discharge, among which the acoustic detection method is less affected by external electromagnetic noise, and is an ideal non-electric on-site detection method. For switchgear power equipment on the substation site, partial discharge occurs inside, accompanied by ultrasonic signals, which propagate along the air to the door gap of the power equipment shell. By using a non-contact ultrasonic sensor at the door gap of the power equipment shell, it can The ultrasonic signal generated by the internal partial discharge is collected, and the ultrasonic sensor converts the detected ultrasonic signal into an electrical signal and sends it...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
CPCG01R35/005
Inventor 陈伟中楼狄张武波曹超刘凤琳陈云鹏杜合胡志鹏厉洋叶新林王光祥
Owner HANGZHOU XIHU ELECTRONICS INST
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