Effect of temperature on charge accumulation on insulator in DC-GIL

被引：0
|
作者：
Zhou H. [1 ]
Ma G. [1 ]
Zhao S. [1 ]
Liu S. [1 ]
Li C. [1 ]
Tu Y. [1 ]
Song H. [1 ]
Wu Z. [1 ]
机构：
[1] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Changping District, Beijing
来源：
| 1600年 / Chinese Society for Electrical Engineering卷 / 36期
关键词：
Charge accumulation; DC gas insulated metal-enclosed transmission line (GIL); Experiment setup; Surface potential measurement; Temperature;
D O I：
10.13334/j.0258-8013.pcsee.161825
中图分类号：
学科分类号：
摘要：
The study of surface charge accumulation under DC-voltage is significantly important to the development of DC-GIL. However, the impact of temperature on the charge accumulation was not taken into account in the existing experimental studies, and it is difficult to obtain the charge accumulation of DC-GIL insulator used in practical engineering. Although the impact of temperature on surface charge accumulation of insulator has been studied by simulation, these simulation results were lacking in experimental verification. In order to solve the above problems, this paper designed a test platform for surface potential measurement of insulator which can simulate the heating of DC-GIL center conduct, and designed a coaxial cylindrical structure test model. A compact electrostatic potential measurement system was developed to measure the surface potential of insulator at different temperatures, and the effects of the temperature on the charge accumulation characteristics of insulator were studied. The results show that the average surface potential of the insulator increases from 278V to 1670V (501%) when the temperature of the center electrode rises from room temperature to 70℃ under the positive voltage. While the average surface potential was negative with the voltage of negative polarity, and the absolute value was increased from 460V to 1507V (228%).Therefore, the influence of temperature on surface charge accumulation should be taken into consideration, and the results of this paper can provide references for the design of DC-GIL insulation. © 2016 Chin. Soc. for Elec. Eng.
引用
收藏
页码：6675 / 6681
页数：6
相关论文
共 21 条
  • [1] Fan J., Li P., Li J., Et al., Study on key technology of ±800kV UHVDC GIL, Proceedings of the CSEE, 28, 13, pp. 1-7, (2008)
  • [2] He J., Ideas on building underground energy complex passage, Southern Power System Technology, 10, 3, pp. 66-70, (2016)
  • [3] Zhang B., Wang Q., Zhang G., Et al., Surface charge accumulation on insulators in SF<sub>6</sub> and its effects on the flashover characteristics of HVDC GIL, High Voltage Engineering, 41, 5, pp. 1481-1487, (2015)
  • [4] Volpov E., Dielectric strength coordination and generalized spacer design rules for HVAC/DC SF<sub>6</sub> gas insulated systems, IEEE Transactions on Dielectrics and Electrical Insulation, 11, 6, pp. 949-963, (2004)
  • [5] Jia Z., Zhang B., Fan J., Et al., Study of charge accumulation along the insulator surface in the DC GIL, Proceedings of the CSEE, 30, 4, pp. 112-117, (2010)
  • [6] Winter A., Kindersberger J., Stationary resistive field distribution along epoxy resin insulators in air under DC voltage, IEEE Transactions on Dielectrics and Electrical Insulation, 19, 5, pp. 1732-1739, (2012)
  • [7] Okabe S., Kumada A., Measurement methods of accumulated electric charges on spacer in gas insulated switchgear, IEEE Transactions on Power Delivery, 22, 3, pp. 1547-1556, (2007)
  • [8] Zhang G., Zhang B., Wang Q., Et al., Experiment study of surface charge accumulation and decay on a cone-type insulator in HVDC GIL, High Voltage Engineering, 41, 5, pp. 1430-1436, (2015)
  • [9] Wang D., Tang J., Liu K., Charge accumulation on post insulator surface under HVDC in GIS, High Voltage Engineering, 41, 9, pp. 3073-3081, (2015)
  • [10] Wang F., Fang Z., Qiu Y., Study of charge accumulation on insulator surface in HVDC gas-insulated switchgear, Proceedings of the CSEE, 25, 3, pp. 105-109, (2005)
123