Results 31 to 40 of about 86,487 (250)

Multiple detections of insulation defects partial discharge in gas-insulated equipment

Frontiers in Energy Research, 2022
Gas-insulated equipment is an important part of the power system owing to its advantages of small footprint, large transmission capacity, and high reliability.
Fanjun Kong, Ke Zhao, Jingtan Ma, Tianxin Zhuang, Hongtao Li, Shan Gao, Jianjun Liu, Chaohai Zhang   +7 more
doaj   +1 more source

Optimized Denoising Method for Weak Acoustic Emission Signal in Partial Discharge Detection

IEEE transactions on dielectrics and electrical insulation, 2022
Acoustic emission (AE) technology can predict the occurrence of partial discharge (PD) faults, which is used to improve the safe operation level of gas-insulated switchgear (GIS) equipment.
Qingcheng Lin, Fuyong Lyu, Shiqi Yu, Hui Xiao, Xuefeng Li   +4 more
semanticscholar   +1 more source

The Effects of PWM with High dv/dt on Partial Discharge and Lifetime of Medium-Frequency Transformer for Medium-Voltage (MV) Solid State Transformer Applications

IEEE transactions on industrial electronics (1982. Print), 2022
Medium-frequency (MF) transformer in a phase-shift modulated dc solid state transformer (SST) is prone to partial discharge (PD) that impacts the system reliability and lifetime.
R. Agarwal, Hui Li, Zhehui Guo, P. Cheetham   +3 more
semanticscholar   +1 more source

Partial Discharge Analysis in High-Frequency Transformer Based on High-Frequency Current Transducer

Energies, 2018
High-frequency transformers are the core components of power electronic transformers (PET), whose insulation is deeply threatened by high voltage (HV) and high frequency (HF). The partial discharge (PD) test is an effective method to assess an electrical
Jun Jiang, Mingxin Zhao, Chaohai Zhang, Min Chen, Haojun Liu, Ricardo Albarracín   +5 more
doaj   +1 more source

Evaluation of Erosion Discharge Characteristics in Inclined Plane Tracking and Erosion Tests on Silicone Rubber under AC and DC Voltages

Energies, 2021
This paper investigates partial discharge (PD) characteristics that lead to the erosion of silicone rubber (SR) polymer under AC stress and DC stress of both polarities.
Valeria Pevtsov, Nathan D. Jacob, Behzad Kordi   +2 more
doaj   +1 more source

Analysis of Cavity PD Characteristics’ Sensitivity to Changes in the Supply Voltage Frequency

Energies, 2021
The supply voltage frequency effect on partial discharge (PD) phenomena has continued to draw research interest. Although most high voltage equipment operates at power frequency (50/60 Hz), testing is often done at different frequencies for various ...
Tapiwa Venge, Cuthbert Nyamupangedengu
doaj   +1 more source

Intelligent partial discharge sensing system for power grid equipment based on Internet of things

Diance yu yibiao
Aiming at the problem that the traditional manual inspection method and wired communication method are difficult to meet the demand for partial discharge (PD) detection of large-scale power equipment, this paper designs an intelligent partial discharge ...
FANG Zheng
doaj   +1 more source

Influence of Temperature on Initiation Mechanism of Partial Discharge at the Interface Defects of Cable Accessories

Zhongguo dianli, 2021
Temperature has an important influence on the partial discharge (PD) development, but the effect of temperature on the PD initiation mechanism is still not fully understood.
Weiwei LI, Ke ZHU, Yuanshi DENG, Zikang WANG, Yonglu HUANG, Kai ZHOU   +5 more
doaj   +1 more source

Partial Discharge Pattern Recognition of Transformers Based on the Gray-Level Co-Occurrence Matrix of Optimal Parameters

IEEE Access, 2021
The partial discharge (PD) is the most common fault of transformers, which is the main factor affecting the stable operation of transformers. Therefore, the PD should be monitored and identified timely to improve the reliability of the transformers.
Shengya Sun, Yuanyuan Sun, Gongde Xu, Lina Zhang, Yiru Hu, Ping Liu   +5 more
doaj   +1 more source

A frequency-based RF partial discharge detector for low-power wireless sensing

, 2010
Partial discharge (PD) monitoring has been the subject of significant research in recent years, which has given rise to a range of well-established PD detection and measurement techniques, such as acoustic and RF, on which condition monitoring systems ...
Baker, P.C., Judd, M.D., McArthur, S.D.J.   +2 more
core   +1 more source