Circuit design and waveform analysis of partial discharge ultrasonic sensor based on parallel systems

2021 ◽  
Author(s):  
Yuhang Liu ◽  
Yonglin Tian ◽  
Fei-Yue Wang
Keyword(s):  
Circuit Design ◽  
Partial Discharge ◽  
Parallel Systems ◽  
Ultrasonic Sensor ◽  
Waveform Analysis

scholarly journals Directional Sensitivity of a MEMS-Based Fiber-Optic Extrinsic Fabry–Perot Ultrasonic Sensor for Partial Discharge Detection

Sensors ◽  
2018 ◽  
Vol 18 (6) ◽  
pp. 1975 ◽  
Author(s):  
Wenrong Si ◽  
Chenzhao Fu ◽  
Delin Li ◽  
Haoyong Li ◽  
Peng Yuan ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Partial Discharge ◽  
Ultrasonic Sensor ◽  
Directional Sensitivity ◽  
Fabry Perot ◽  
Discharge Detection

scholarly journals Gold-Diaphragm Based Fabry-Perot Ultrasonic Sensor for Partial Discharge Detection and Localization

2020 ◽  
Vol 12 (3) ◽  
pp. 1-12 ◽  
Author(s):  
Wei Zhang ◽  
Ping Lu ◽  
Wenjun Ni ◽  
Wanze Xiong ◽  
Deming Liu ◽  
...  
Keyword(s):  
Partial Discharge ◽  
Ultrasonic Sensor ◽  
Fabry Perot ◽  
Detection And Localization ◽  
Discharge Detection

scholarly journals A Fiber Optic Ultrasonic Sensor Using Polarization-maintaining Fiber for Partial Discharge Monitoring

2019 ◽  
Vol 31 (5) ◽  
pp. 1407
Author(s):  
Xuefeng Li ◽  
Hexin Cao ◽  
Zhiming Chang ◽  
Xinyu Zhang ◽  
Weishi Zhao ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Partial Discharge ◽  
Ultrasonic Sensor ◽  
Polarization Maintaining Fiber ◽  
Polarization Maintaining ◽  
Discharge Monitoring

Separation Research of Ultrasonic Wave in Transformer Partial Discharge Based on Improved Waveform Matching

2013 ◽  
Vol 291-294 ◽  
pp. 2325-2330
Author(s):  
Hong Ling Xie ◽  
Fei Wang ◽  
Yan Qing Li ◽  
Fei Long Wang
Keyword(s):  
Ultrasonic Wave ◽  
Attenuation Coefficient ◽  
Partial Discharge ◽  
Ultrasonic Sensor ◽  
Separation Method ◽  
Signal Frequency ◽  
Direct Wave ◽  
Wave Signal ◽  
Position Accuracy ◽  
Wave Separation

The use of direct wave to locate the position of the PD source is of better accuracy in transformer partial discharge ultrasound array positioning. For the signal received by ultrasonic sensor is consisted by direct wave, non-direct wave and a variety of noise, a direct wave separation method based on improved waveform matching is proposed in this paper. It is considered that the direct wave first reaches the ultrasonic sensor. A benchmarks triangle is built and then the attenuation coefficient and the signal frequency are both calculated. In order to search the matching wave, the benchmarks triangle is to pan and zoom. Finally, the best matching waveform is selected from a large number of matching waveforms as a direct wave signal. The result of simulation shows that the method can isolate the ultrasonic direct wave signal from the received signal, which provides some theoretical guidance to improve the position accuracy of the PD source.

High Voltage Equipment PD Pattern Recognition Based on BP Classifier

2015 ◽  
Vol 734 ◽  
pp. 99-103
Author(s):  
Lu Li ◽  
Guo Qing Jiang ◽  
Tian Ye Niu ◽  
Yi Wang ◽  
Yong Lu ◽  
...  
Keyword(s):  
Pattern Recognition ◽  
High Voltage ◽  
Partial Discharge ◽  
Recognition Rate ◽  
Ultrasonic Sensor ◽  
Discharge Pattern ◽  
Feature Vectors ◽  
Local Linear Embedding ◽  
Local Linear ◽  
Linear Embedding

The corresponding discharge waveforms were detected by ultrasonic sensor. The dimension of feature vectors extracted from discharge waveforms were reduced by local linear embedding algorithm. The processed vectors were used as input to train and test BP_Adaboost classifier. Recognition results show that, high voltage reactor insulating defects recognition with this method can reduce the calculation and maintain a high recognition rate at the same time. This shows its effectiveness in the application of partial discharge pattern recognition.

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