Measurements and Calculations of Surface Charge on the Cone-Type Insulator
The solid insulators in gas insulated equipment are of great important to the electrical insulation reliability of such equipment.It was confirmed that surface charge accumulation on the insulator is the most important matter that can degrade the overall performance of these insulation systems.In order to study the phenomenon of surface charge accumulation on conetype insulators,which are most commonly used in gas insulated systems,a set of device for surface charge measurement is designed based on the electrostatic probe technique.The Trek Model 347 voltmeter and a vibrating probe are utilized to obtain the surface voltages of the insulator.Moreover,an improved numerical computing method is introduced to calculate the surface charge.The measured results show that this technique can be used to measure the spatial distribution of surface charge on the cone-type insulator with satisfactory accuracy and resolution.
Surface charge:spatial distribution:cone-type insulator:electrostatic probe:measurement:calculation
Qiang Wang Guixin Zhang Xinxin Wang
Tsinghua University Department of Electrical Engineering Beijing,100084 China
国际会议
威海
英文
645-648
2011-07-06（万方平台首次上网日期，不代表论文的发表时间）