Ultrasonic wave partial discharge detector sensitivity evaluation device and method
An ultrasonic and partial discharge instrument technology, which is applied in the field of measuring devices for the sensitivity of ultrasonic partial discharge instruments, can solve problems such as the establishment of ultrasonic partial discharge instruments, and achieve the effects of easy implementation, simple device structure and high result accuracy.
Active Publication Date: 2019-03-01
KUNMING UNIV OF SCI & TECH
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Problems solved by technology
The power industry has not yet established relevant evaluation standards and specifications for ultrasonic partial discharge instruments, and the existing relevant test methods and devices have certain limitations. Therefore, a sensitivity evaluation device and evaluation method for ultrasonic partial discharge instruments is designed.
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Embodiment 1
[0022] Such as figure 1 As shown, the evaluation device for the sensitivity of the ultrasonic partial discharge instrument includes a programmable signal generator, a digital oscilloscope, an ultrasonic transducer and a partial discharge instrument to be evaluated; the ultrasonic transducer is used to generate standard ultrasonic signals for evaluation; The programmable signal generator uses the standard ultrasonic signal for evaluation in the standard ultrasonic transducer to generate a sinusoidal signal of a specific frequency and specific amplitude; the digital oscilloscope is used to collect the sinusoidal signal output by the programmable signal generator; the programmable signal generator signal is connected to the ultrasonic The transducer, the signal of the ultrasonic transducer is connected to the partial discharge instrument to be tested and evaluated.
[0023] Such as figure 2 As shown, the evaluation method of the evaluation device for the sensitivity of the ultr...
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The present invention relates to an ultrasonic wave partial discharge detector sensitivity evaluation device and method, belonging to the technical field of electrical equipment partial discharge detection. The device provided by the invention comprises a programmable signal generator, a digital oscilloscope, an ultrasonic transducer and a partial discharge detector to be evaluated; the ultrasonictransducer is configured to generate standard ultrasonic wave signals to be evaluated; the programmable signal generator employs the standard ultrasonic wave signals to be evaluated in the standard ultrasonic transducer to generate sinusoidal signals with special frequencies and special amplitudes; the digital oscilloscope is configured to collect the sinusoidal signals output by the programmablesignal generator; and the programmable signal generator is in signal connection with the ultrasonic transducer, and the ultrasonic transducer is in signal connection with the partial discharge detector to be evaluated. The ultrasonic wave partial discharge detector sensitivity evaluation device is simple in structure and easy to implement. The method is easy to implement, and is higher in resultaccuracy compared to a traditional partial discharge detector evaluation method.
Description
technical field [0001] The invention relates to a device and method for evaluating the sensitivity of an ultrasonic partial discharge instrument, and belongs to the technical field of partial discharge detection of electric power equipment. Background technique [0002] The partial discharge detector is a commonly used instrument for diagnosing the insulation status of high-voltage power equipment. The parameters such as the number, amplitude, and polarity of the partial discharge signals detected by it are very important for the aging judgment of the insulation system, breakdown indicators, and equipment inspection. At present, there are many products of partial discharge detectors at home and abroad, and their performance and quality vary. Therefore, the unified test and evaluation of partial discharge detectors is of great significance. The power industry has not yet established relevant evaluation standards and specifications for ultrasonic partial discharge instruments,...
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IPC IPC(8): G01R31/12G01R35/00
CPCG01R31/1227G01R35/00
Inventor 赵磊
Owner KUNMING UNIV OF SCI & TECH