Distribution Characteristics of Corona Space Charge Generated from the ±1 100 kV UHVDC Overhead Transmission Line Under the Thundercloud Electric Field

被引：0
|
作者：
Chen S. [1 ]
He H. [1 ]
Zou Y. [1 ]
Yu J. [2 ]
Chen W. [2 ]
He J. [1 ]
机构：
[1] State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan
[2] State Grid Corporation of China, Beijing
来源：
He, Hengxin (hengxin_he@qq.com) | 2018年 / Science Press卷 / 44期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Corona space charge; Lightning shielding failure; Second-order accurate finite volume method; Space potential distortion; UHVDC overhead transmission line;
D O I：
10.13336/j.1003-6520.hve.20180329041
中图分类号：
学科分类号：
摘要：
In order to study the effect of corona space charge on the lightning shielding failure process,we established a 2D numerical simulation model to calculate the distribution of the corona space charge under the thundercloud electric field based on a second-order accurate finite volume method with flux limiter. The validity of the model was comparatively experimentally verified. Using the model, we presented the corona inception process, corona current waveform, and corona space charge distribution characteristics of a typical ±1 100 kV UHVDC transmission line and calculated the average velocity of the positive space charge boundary in the y-axis direction to be 4.05 m/s. By analyzing the distribution of the space potential distortion at different times, it was concluded that the potential distortion under the thundercloud electric field mainly concentrated above the grounded wires.Compared with the effect of only the DC operating voltage, the maximum value of the space potential distortion was increased by about 20 times.From the calculated potential distortion distribution, it could be seen that the upward leader from the grounded wire of the ±1 100 kV UHVDC transmission line in the plain area was more likely to develop along the horizontal direction. The work lays a foundation for the further study on the influence of the space charge layer on the lightning attachment to UHVDC overhead transmission lines. © 2018, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
引用
收藏
页码：1367 / 1376
页数：9
相关论文
共 27 条
  • [1] Vereshchagin I.P., Wu W., The analysis of lightning protection for EHV and UHV transmission lines in Russia, High Voltage Engineering, 24, 2, pp. 76-79, (1998)
  • [2] Armstrong H.R., Whitehead E.R., Field and analytical studies of transmission line shielding, IEEE Transactions on Power Apparatus & Systems, 87, 1, pp. 270-281, (1968)
  • [3] Brown G.W., Whitehead E.R., Field and analytical studies of transmission line shielding: part, IEEE Transactions on Power Apparatus & Systems, 88, 5, pp. 270-281, (1969)
  • [4] Taniguchi S., Tsuboi T., Okabe S., Et al., Improved method of calculating lightning stroke rate to large-sized transmission lines based on electric geometry model, IEEE Transactions on Dielectrics & Electrical Insulation, 17, 1, pp. 53-62, (2010)
  • [5] Dellera L., Garbagnati E., Lightning stroke simulation by means of the leader progression model Ⅰ: description of the model and evaluation of exposure of free-standing structures, IEEE Transactions on Power Delivery, 5, 4, pp. 2009-2022, (1990)
  • [6] Dellera L., Garbagnati E., Lightning stroke simulation by means of the leader progression model Ⅱ: exposure and shielding failure evaluation of overhead lines with assessment of application graphs, IEEE Transactions on Power Delivery, 5, 4, pp. 2023-2029, (1990)
  • [7] Becerra M., Cooray V., A self-consistent upward leader propagation model, Journal of Physics D Applied Physics, 39, 16, pp. 3708-3715, (2006)
  • [8] Becerra M., Cooray V., Time dependent evaluation of the lightning upward connecting leader inception, Journal of Physics D Applied Physics, 39, 21, pp. 4695-4702, (2006)
  • [9] Becerra M., Cooray V., A simplified physical model to determine the lighting upward connecting leader inception, IEEE Transactions on Power Delivery, 21, 2, pp. 897-908, (2006)
  • [10] Zeng R., Liu H., Zhuang C., Et al., Calculation of shielding failure flashover rate of transmission line using leader progression model, High Voltage Engineering, 43, 5, pp. 1581-1588, (2017)
123