Transformer station capacitive equipment insulation performance on-site on-line evaluation device

Abstract

The invention relates to a transformer station capacitive equipment insulation performance on-site on-line evaluation device and belongs to the technical field of insulating property detection. The device comprises a signal measurement unit, a signal conditioning unit, a signal sampling unit, an embedded processor, a signal communication unit, an HMI man-machine interaction unit and a power supplymodule; the signal measurement unit comprises a current transformer, a voltage transformer and a temperature and humidity sensor; the embedded processor comprises a signal processing unit and a signal analysis unit; the signal measurement unit is connected with the signal conditioning unit; the signal conditioning unit is connected with the signal sampling unit; the temperature and humidity sensor and the signal sampling unit are connected with the input end of the signal processing unit; the signal processing unit is connected with the signal analysis unit; the signal analysis unit is connected with the signal communication unit and the HMI man-machine interaction unit; and the power supply module supplies power to device. The device is high in detection precision, strong in anti-interference capability and easy to popularize and apply.

Description

technical field [0001] The invention belongs to the technical field of insulation performance detection, and in particular relates to an on-site evaluation device for the insulation performance of substation capacitive equipment. Background technique [0002] 40%-50% of the total substation equipment is capacitive equipment. The insulation defects and abnormal operation of these equipment will cause insulation accidents in the power system. Therefore, it is very important to monitor the insulation performance of high-voltage capacitive equipment in real time and accurately during its operation. important and necessary. [0003] At present, the substation equipment monitoring still adopts regular, off-line experimental testing. The method of judging the working status of the equipment based on the test results has the problems of poor timeliness and low accuracy. Judging the insulation performance of the equipment by a single experimental parameter is also uncertain, which is...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the poor timeliness brought by the current substation regular and off-line equipment insulation detection method, the equipment insulation information is not obtained in time, and the experimental detection method is not accurate because the experimental voltage is far lower than the operating voltage. Equipment insulation detection requires a power outage, and the experimental method of testing equipment insulation causes a large amount of labor costs and time costs. At present, most of the insulation wire monitoring devices ignore the problems of real-time data analysis and hardware reasoning, and provide a substation capacitive On-site evaluation device for insulation performance of equipment, which integrates sensor technology, signal processing technology, data analysis technology, data communication technology, and human-computer interaction technology, realizes on-site evaluation of insulation performance of capacitive equipment, and has high detection accuracy and anti-interference Strong ability, easy to promote and apply

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