An Experimental Study of High-Frequency Overvoltage Spikes

Borisov, R. K.; Smirnov, M.; Goldun, A. V.; Tikhonov, Yu. V.

doi:10.3103/s1068371221040027

Cited by 2 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The initial partial discharge voltage and power frequency breakdown voltage of the interturn insulation model sample of the nonaged dry air core reactor are measured to provide a reference for the determination of the aging voltage value. The constant power frequency voltage method and stepped power frequency voltage method are used to carry out the accelerated electrical aging test of model samples under power frequency overvoltage [14].…”

Section: Electrical Aging Life Evaluation System Of Turn-to-turnmentioning

confidence: 99%

Life Prediction of Dry Reactor Sensor Based on Deep Neural Network

et al. 2022

View full text Add to dashboard Cite

In order to solve the problem of increasing the number and service life of a dry-type air core reactor and frequent interturn insulation faults, this paper proposes a life prediction method of a dry-type reactor sensor based on the deep neural network. On the basis of summarizing the research status of turn-to-turn insulation-related problems, this method studies the switching overvoltage generated in the process of breaking the dry-type air core reactor, the deterioration law of turn-to-turn insulation under the cumulative action of switching overvoltage, the influence of thermal aging on the Switching Overvoltage Withstand characteristics of turn-to-turn insulation, and the electrical aging life of turn-to-turn insulation under the power frequency overvoltage. Based on the deep neural network, the electrical aging life model of turn-to-turn insulation of the dry-type air core reactor under power frequency overvoltage is obtained. The results are as follows: with the increase of the applied voltage amplitude, the deterioration speed of the turn-to-turn insulation of the model sample accelerates. When the applied voltage amplitude reaches a certain value, the maximum discharge amount and pulse discharge power of the partial discharge pulse increase rapidly, and the image coincidence degree reaches 85%. The electric aging life curve of the modified interturn insulation model sample of the dry-type air core reactor has a high correlation with the measured aging life data, and the performance is more than 95%. The research results of this paper lay a practical foundation for further research on the deterioration mechanism of interturn insulation under the combined action of multiple factors and provide theoretical support for the risk and life assessment of the dry-type air core reactor.

show abstract

Section: Electrical Aging Life Evaluation System Of Turn-to-turnmentioning

confidence: 99%

Life Prediction of Dry Reactor Sensor Based on Deep Neural Network

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Because there is a lot of noise in the working environment of the transformer, the internal structure of the transformer is complex and the sound wave attenuation is serious, when using the ultrasonic detection method for detection, the frequency range with large component in the spectrum will be selected as the measurement frequency through the filter, which can improve the detection accuracy to a certain extent. If more than one ultrasonic sensor or ultrasonic detector is installed, partial discharge location can be carried out [2] [11].…”

Section: Ultrasonic Testing Methodsmentioning

confidence: 99%

Partial Discharge Detection of High Voltage Electrical Equipment Based on Acoustic Imaging(AI)

Luo¹,

Yao²,

Zhang³

et al. 2023

Proceedings of the 2nd International Conference on Internet, Education and Information Technology (IEIT 2022)

View full text Add to dashboard Cite

With the development of market economy, high-voltage XLPE insulated conductor, as a key component of urban transmission line, plays an important role in maintaining the safe and stable operation of urban high-voltage line. The completion acceptance test of high-voltage conductor is a defect test before the investment and operation of high-voltage cable lines. It is an important link to prevent the investment and risk operation of high-voltage cable line. Based on the actual application of acoustic imaging technology in the partial discharge test of high-voltage distribution equipment, this paper puts forward the detection algorithm of high-voltage electrical equipment, tests the traditional AC withstand voltage method and the number of defective lines and acceptance lines when acoustic imaging is applied to the partial discharge detection method of high-voltage electrical equipment. The test results show that after the acoustic imaging proposed in this paper is applied to the partial discharge detection technology of high-voltage electrical equipment, the defect detection rate in the complete acceptance test of high-voltage cable is improved, while the number of operating lines with faults caused by small defects is reduced, which effectively reduces the number of high-voltage cables with faults caused by hidden dangers. It is verified that the application of acoustic imaging in partial discharge detection of high-voltage electrical equipment can effectively improve the fault detection rate of high-voltage cable completion acceptance and reduce the hidden dangers of high-voltage cable belts. The application of acoustic imaging in partial discharge detection of high voltage electrical equipment is the general trend in the future.

show abstract

An Experimental Study of High-Frequency Overvoltage Spikes

Cited by 2 publications

References 1 publication

Life Prediction of Dry Reactor Sensor Based on Deep Neural Network

Life Prediction of Dry Reactor Sensor Based on Deep Neural Network

Partial Discharge Detection of High Voltage Electrical Equipment Based on Acoustic Imaging(AI)

Contact Info

Product

Resources

About