A5033776027- High voltage insulation and dielectric phenomena
- Power Transformer Diagnostics and Insulation
- Wireless Power Transfer Systems
- Lightning and Electromagnetic Phenomena
- Energy Harvesting in Wireless Networks
- Underwater Vehicles and Communication Systems
- Electrical Fault Detection and Protection
- Power Systems Fault Detection
- Advanced DC-DC Converters
- Advanced Battery Technologies Research
- Indoor and Outdoor Localization Technologies
- RFID technology advancements
- Multilevel Inverters and Converters
- Advanced Algorithms and Applications
- Advanced Sensor and Control Systems
- Aerosol Filtration and Electrostatic Precipitation
- Educational and Technological Research
- Image and Signal Denoising Methods
- Silicon Carbide Semiconductor Technologies
- Electrical Contact Performance and Analysis
- Scheduling and Timetabling Solutions
- Innovative Energy Harvesting Technologies
Yantai University
2022-2024
Harbin Engineering University
2021-2024
Institute for Forecasting of the Slovak Academy of Sciences
2023
Cytoskeleton (United States)
2023
Southwest Jiaotong University
2019-2020
In the alpine region, there are many flashover failures of ethylene-propylene rubber (EPR) cable terminations due to cavity discharges in China high-speed railways (CHRs). The termination with defects is used as test samples and a low-temperature PD system set up study characteristics partial discharge (PD) those regions. Influences different temperatures on internal EPR insulation at -40°C 20 °C have been analyzed. When applied temperature dropped -40°C, initiation voltage extinction...
The problem to identify the type of source generating discharges detected during campaigns partial discharge (PD) measurements in cable terminal is utmost importance quality control and state detection power supply system a high-speed railway train. purpose this article provide novel PD feature potential tool for identification. traditional train usually identified by test parameters, such as amplitude, times, energy. These features contain limited information are easily affected external...
Ethylene propylene rubber (EPR) cable terminations have great potential in improving the operational reliability of electric multiple units, for their high elasticity and low loss. However, breakdown EPR frequently occurred northwestern China during winters. In this study, tests were conducted to investigate effect temperature (−40 20°C) on partial discharges (PDs) characteristics, characteristic transition temperature, process termination. samples with no artificial defects, it was found...
To investigate partial discharge-induced deterioration characteristics of ethylene-propylene rubber (EPR) cable insulation under repeated alternating current (AC) voltage on high-speed trains, an experimental platform with a column-plate EPR model is established. The surface condition and breakdown samples after discharge treatment are observed measured. In addition, fitting formula to evaluate the extent proposed. results show that pretreatments, volume resistivity increases first decreases...
There is a significant positive proportional correlation between the condition of ethylene propylene diene monomer (EPDM) insulation and partial discharge (PD) characteristics in electric multiple units (EMUs) cable termination. Especially for terminations with long service life, aging effect EPDM material due to long-term high-current load. In this article, electrical deterioration PD development under thermal degradation conducted. During test process, phase-resolved (PRPD) analysis,...
With the development of wireless power transmission technology, it provides an important way to solve energy supply problem underwater mechanical and electrical equipment. The existing research is more focused on system itself, because nature transmission, also very locate complicated changeable environment. For positioning, there are currently satellite navigation, land astronomical Roland C inertial etc. Each which has its own advantages disadvantages in a certain range, play role but they...
Ethylene–propylene rubber (EPR) cable is the most commonly used type in high-speed railway. Several flashover accidents take place termination an extremely cold environment. In this study, EPR terminations were tested a simulated low-temperature system with varied applied voltages. The results showed that differences elastic modulus and free space volume between insulation stress control tube (SCT) frigid environment would lead to structural defects them. Damages on occurred form of point...
The application of wireless power transmission(WPT) is intended to make supply more flexible and convenient, replace traditional plug-in contact charging in specific situations, such as the underwater equipment. If transmission efficiency WPT system cannot meet requirements, it will not only lose its original design significance but also cause a waste energy. Therefore, efficacy optimization technology has always been hot topic research. control strategy plays an important role performance...
Submarine DC cables are widely used for long-distance power transmission. If the transmission line is forced to be suspended due a fault, it will not only affect supply, but also cause lot of economic losses. The sea situation complicated, area large, and construction cost high. Therefore, very important determine fault type locate accurately. Starting from study most common open circuit short faults cables, existing detection method submarine such as rectangular wave in low-voltage pulse...
Ethylene Propylene Rubber (EPR) cable termination air gap defects will lead to the occurrence of partial discharge phenomenon in cold area caused by frequent breakdown failure. To study characteristics at low temperature, a low-temperature test system is designed simulate environment severe region. The process during monitored. According and variation rule, whole PD contact divided into three main stages temperatures. And local each stage are also analyzed. results show that voltage...