Hybrid Electric Field Calculation under AC-DC Parallel Transmission Line

doi:10.3969/j.issn.1000－7229.2015.04.014

Abstract

Abstract:

To accurately calculate the hybrid electric field under AC-DC parallel transmission lines, this paper analyzed the impact of AC transmission lines on the surface electric field of DC conductor, used optimization algorithm to optimize and simulate the charge location, and analyzed the change of the surface electric field of DC conductor with the voltage of AC conductor. Considering with the impact of AC transmission lines on the space ion trajectory of DC transmission lines, the maximum instantaneous value of total electric field under DC transmission lines was calculated based on Deutsch hypothesis, and a reasonable assumption was proposed to accurately calculate the hybrid electric field under AC-DC parallel transmission line. Finally, this paper analyzed the impact of line spacing on the hybrid electric field. The results show that AC transmission lines have a great influence on the corona and space ion flow field of DC conductor, which should be considered in the calculation； the spacing of AC/DC transmission lines also has a great influence on the hybrid electric field of DC transmission lines, which should be considered in the line design.

Key words: AC-DC parallel transmission line, hybrid electric field, electric field of conductor surface

CLC Number:

TM 154

LI Tieding, HUANG Yucheng, QIN Haohao. Hybrid Electric Field Calculation under AC-DC Parallel Transmission Line[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(4): 83-90.

References

［1］Maruvada P S, Drogi S. Fields and ion interactions of hybrid AC/DC transmission lines［J］. IEEE Transactions on Power Delivery, 1988, 3（3）: 1165-1172.
［2］Abd-Allah M A, Alghamdi A S. Ion trajectories and corona effects at converting one circuit of a double circuit AC line to DC ［C］//Power Engineering Society Summer Meeting. Vancouver, Canada: IEEE, 2001:1749-1753.
［3］ZHAO T, Sebo S A, Kasten D G. Calculation of single phase AC and monopolar DC hybrid corona effects［J］. IEEE Transactions on Power Delivery, 1996, 11（3）: 1451-1463.
［4］杨勇.交直流同走廊线路的电场分析和计算［D］. 北京：北京航空航天大学，2008.
Yang Yong. Analysis and calculation of the electric field under AC and DC transmission lines in the same transmission corridor［D］. Beijing: Beihang University, 2008.
［5］Yin H, He J L. Finite volume-based approach for the hybrid ion-flow field of UHVAC and UHVDC transmission lines in parallel［J］. IEEE Transaction on Power Delivery, 2011,26（4）:2809-2820.
［6］赵永生，张文亮. 同塔交直流输电线路混合电场研究［J］. 电网技术，2014，38（1）：120-125.
Zhao Yongsheng, Zhang Wenliang. Research on hybrid electric field caused by HVAC and HVDC transmission lines erected on the same tower［J］. Power System Technology, 2014, 38（1）:120-125.
［7］周象贤. 高压交直流并行线路离子流场的计算方法研究及其应用［D］. 北京：华北电力大学，2013.
［8］刘振亚. 特高压直流输电工程电磁环境［M］. 北京：中国电力出版社,2009.
［9］Sunaga Y, Sawada Y. Method of calculating ionized field of HVDC transmission lines and analysis of space charge effects on RI［J］. IEEE Transactions on Power Apparatus and Systems, 1980, 99（2）: 605-615.
［10］Yamazaki K, Olsen R G. Application of a corona onset criterion to calculation of corona onset voltage of stranded conductors［J］. IEEE Transactions on Dielectrics and Electrical Insulation, 2004, 11（4）:674-680.
［11］Peek F W. Dieletric phenomena in high voltage engineering［M］. New York: McGraw-Hill, 1929.
［12］杨勇,陆家榆,雷银照. 同塔双回高压直流线路地面合成电场的计算方法［J］. 中国电机工程学报, 2008, 28（6）:32-36.
Yang Yong, Lu Jiayu, Lei Yinzhao. Calculation of the total electric field at ground level for double-circuit HVDC overhead transmission lines［J］. Proceedings of the CSEE,2008,28（6）:32-36.
［13］罗兆楠，崔翔，甄永赞，等. 直流输电线路三维离子流场的计算方法［J］. 中国电机工程学报, 2010, 30（27）:102-107.
Luo Zhaonan, Cui Xiang, Zhen Yongzan, et al. A calculation method for 3-D ionizes field under HVDC transmission lines［J］. Proceedings of the CSEE, 2008, 28（6）:102-107.
［14］鞠勇,吴桂芳. 特高压直流线路与交流线路同走廊时的电场研究［R］. 北京：中国电力科学研究院, 2007.
［15］张广洲. 交直流线路混合电场计算与测试研究［D］. 武汉：武汉大学. 2012.
Zhang Guangzhou. Calculation and measurement of hybrid electric field from AC/DC lines［D］. Wuhan: Wuhan University, 2012.
［16］Li W, ZHANG B, He J L, et al. Calculation of the ion flow field of AC-DC hybrid transmission lines［J］. Generation, Transmission & Distribution, IET, 2011, 3（10）: 911-918.
［17］周象贤，卢铁兵，崔翔，等. 邻近交流线路时直流输电线路电晕损失的计算与分析［J］.中国电机工程学报, 2011, 31（31）: 211-218.
Zhou Xiangxian, Lu Tiebing, Cui Xiang, et al. Corona loss analysis of high voltage DC transmission lines in close proximity of high voltage AC transmission lines［J］. Proceedings of the CSEE,2011, 31（31）:211-218.
［18］Al-Hamouz Z M. A hybrid computational technique for the estimation of corona power loss associated with bundled transmission lines［J］. Electric Power Systems Research, 1999, 50（1）:65-70.
［19］Sarma M. Field and ion inter-actions of hybrid AC/DC transmission lines［J］. IEEE Transactions on Power Delivery, 1988,3（3）:1165-1172.
［20］Bracken T D, Senior R S., Bailey W H.. DC electric fields from corona-generated space charge near AC transmission lines［J］. IEEE Transactions on Power Delivery, 2005, 20（2）:1692-1702.
［21］Yin H, HE J L, Zhang B, et al. Finite volume-based approach for the Hybrid ion-flow field of UHVAC and UHVDC transmission lines in parallel［J］. IEEE Transactions on Power Delivery, 2011,26（4）:2809-2820.
［22］Abdel-Salam M, El-Mohandes M T, EI-Kishky H. Electric field around parallel DC and multi-phase AC trans-mission lines［J］. IEEE Transaction on Electrical Insulation, 1990,25（6）:1145-1152.
［23］Yang Y, LU J, and Lei Y. A calculation method for the hybrid electric field under UHAC and UHVDC transmission lines in the same corridor［J］. IEEE Transactions on Power Delivery, 2010,25（2）:1146-1153.
［24］Li W, Zhang Bo, Zeng R, et al. Discussion on the Deutsch assumption in the calculation of ion-flow field under HVDC bipolar transmission lines ［J］. IEEE Transactions on Power Delivery, 2010, 25（4）:2759-2767.