Analysis of the Influence of 750 kV Ultra-high Voltage Transmission Line on the Three-phase Voltage Imbalance of Shared Corridor Parallel Distribution Line and Governance Measures

doi:10.11985/2024.01.033

Abstract

Abstract:

When the 35 kV distribution line runs parallel to the 750 kV ultra-high voltage(UHV) transmission line in the shared corridor, the power quality such as the three-phase voltage imbalance of the 35 kV distribution line will be affected by the strong electromagnetic induction of the 750 kV UHV transmission line. In order to ensure the reliability of the power supply of 35 kV distribution lines and solve the problem of three-phase voltage imbalance in operation, the three-phase voltage imbalance changes under different distances, heights and different lengths of parallel sections between 750 kV ultra-high voltage transmission lines and 35 kV distribution lines are analyzed. Reliable and feasible solutions based on actual conditions are put forward, including reducing the height of 35 kV distribution lines to the ground while installing shielded ground wires, installing parallel capacitors on 35 kV distribution lines, and installing parallel reactors on 35 kV distribution lines. Through these measures, the impact of the 750 kV ultra-high voltage transmission line on the three-phase voltage imbalance of the distribution line during the operation of the shared corridor can be improved, the ability of the distribution line to withstand the influence of the electromagnetic environment is improved, and the reliability and safety of the operation of the distribution line are enhanced. The technical solutions for the operation design and planning of UHV transmission lines and distribution lines in shared corridors are provided.

Key words: Power quality, shared corridors, governance measures, power distribution lines, electromagnetic influences

CLC Number:

TM561

BAO Yanyan, LIU Kang, WEN Dingjun, ZHANG Guangdong, DING Yujian. Analysis of the Influence of 750 kV Ultra-high Voltage Transmission Line on the Three-phase Voltage Imbalance of Shared Corridor Parallel Distribution Line and Governance Measures[J]. Journal of Electrical Engineering, 2024, 19(1): 308-315.

Figures/Tables 17

References 20

[1]	牛浩然, 谭杰, 周杰, 等. 同塔六回输电线路感应电压与感应电流的计算分析[J]. 电力学报, 2019, 34(2):123-129.
	NIU Haoran, TAN Jie, ZHOU Jie, et al. Calculation and analysis of induced voltage and induced current of six circuit transmission lines on the same tower[J]. Journal of Electric Power, 2019, 34(2):123-129.
[2]	苏超, 刘振声, 李黎, 等. 220 kV 架空输电线路下工频电场的电磁感应仿真分析[J]. 广东电力, 2018, 31(1):106-112.
	SU Chao, LIU Zhensheng, LI Li, et al. Simulation analysis on electromagnetic induction of power frequency electric field under 220 kV overhead transmission lines[J]. Guangdong Electric Power, 2018, 31(1):106-112.
[3]	黄国平, 黄华斌. 500 kV/220 kV混压同塔四回输电线路接地开关的改造方案[J]. 广东电力, 2021, 34(11):67-74.
	HUANG Guoping, HUANG Huabin. Transformation plan of grounding switches of 500 kV/220 kV four-loop mixed voltage transmission lines on the same tower[J]. Guangdong Electric Power, 2021, 34(11):67-74.
[4]	孙劼, 金益迥, 刘光, 等. 基于解析法的架空地线感应电流分布特性分析[J]. 广东电力, 2021, 34(4):123-131.
	SUN Jie, JIN Yijiong, LIU Guang, et al. Analysis of induction current distribution on overhead ground wires based on analytic method[J]. Guangdong Electric Power, 2021, 34(4):123-131.
[5]	熊鑫欣, 李春亮, 江子豪, 等. 同塔多回线路的感应电压的电路模型与有限元模型的计算及分析[J]. 广东电力, 2017, 30(4):115-119.
	XIONG Xinxin, LI Chunliang, JIANG Zihao, et al. Calculation and analysis on circuit model and finite element model of induced voltage of multi-circuit transmission lines on same tower[J]. Guangdong Electric Power, 2017, 30(4):115-119.
[6]	聂程, 郭少锋, 牛海清, 等. 隧道集群敷设高压电缆多物理场电路耦合仿真及其典型运行状态分析[J]. 广东电力, 2021, 34(2):68-76.
	NIE Cheng, GUO Shaofeng, NIU Haiqing, et al. Simulation of multi-physical field coupling circuit of high voltage cable cluster laying in tunnel and analysis of typical operating states[J]. Guangdong Electric Power, 2021, 34(2):68-76.
[7]	吴桂芳, 余军, 郭贤珊, 等. ±800 kV直流和1 000 kV交流线路同走廊时的最小接近距离研究[J]. 中国电力, 2007, 40(12):22-26.
	WU Guifang, YU Jun, GUO Xianshan, et al. Study on least approaching distances between ±800 kV DC transmission line and 1 000 kV AC transmission line in a hybrid corridor[J]. Electric Power, 2007, 40(12):22-26.
[8]	王冉冉, 徐静, 李子扬, 等. 特高压交流输电线路下钢架建筑的感应电压、电流仿真分析[J]. 高电压技术, 2021, 47(2):724-731.
	WANG Ranran, XU Jing, LI Ziyang, et al. Simulation analysis for induced voltage and induced current in the steel frame construction under UHV AC transmission lines[J]. High Voltage Engineering, 2021, 47(2):724-731.
[9]	赵永生, 张文亮. 同走廊高压交、直流输电线路混合电场分析[J]. 高电压技术, 2014, 40(3):923-929.
	ZHAO Yongsheng, ZHANG Wenliang. Hybrid electric field analysis of HVAC and HVDC transmission lines in one corridor[J]. High Voltage Engineering, 2014, 40(3):923-929.
[10]	朱军, 熊万亮, 曹晓斌, 等. 共用走廊高压输电线路间耦合影响分析[J]. 华东电力, 2011, 39(12):2021-2025.
	ZHU Jun, XIONG Wanliang, CAO Xiaobin, et al. Coupling effects among high voltage transmission lines in joint-use corridor[J]. East China Electric Power, 2011, 39(12):2021-2025.
[11]	唐伟华. 500 kV同塔双回输电线路感应电压电流对运维的影响与防控策略[D]. 广州: 华南理工大学, 2020.
	TANG Weihua. Influence of induced voltage and current on operation and maintenance of 500 kV double-circuit transmission lines on the same tower and its prevention and control strategy[D]. Guangzhou: South China University of Technology, 2020.
[12]	周文灿. 架空输电线路感应电压的计算方法研究[D]. 北京: 华北电力大学, 2017.
	ZHOU Wencan. Study on calculation method of induced voltage of overhead transmission line[D]. Beijing: North China Electric Power University, 2017.
[13]	DING Hui, ZHANG Yi, GOLE A M, et al. Analysis of coupling effects on overhead VSC-HVDC transmission lines from AC lines with shared right of way[J]. IEEE Transactions on Power Delivery, 2017, 25(4):2976-2986. doi: 10.1109/TPWRD.2010.2043373
[14]	吴勋, 尹创荣, 陈冠豪, 等. 架空地线与预绞丝端口接触压力的仿真分析[J]. 广东电力, 2019, 32(11):151-156.
	WU Xun, YIN Chuangrong, CHEN Guanhao, et al. Simulation analysis of contact pressure between overhead ground wire and preformed armor rod port[J]. Guangdong Electric Power, 2019, 32(11):151-156.
[15]	TANG Jian, ZENG Rong, MA Hongbin, et al. Analysis of electromagnetic interference on DC line from parallel AC line in close proximity[J]. IEEE Transactions on Power Delivery, 2018, 22(4):2401-2408. doi: 10.1109/TPWRD.2007.905334
[16]	范松海, 谢彦斌, 刘益岑, 等. 逐塔接地条件下OPGW地线取能方法研究[J]. 高压电器, 2017, 53(11):141-145.
	FAN Songhai, XIE Yanbin, LIU Yicen, et al. Study on power tapping method from optical power ground wire grounded to each tower of transmission line[J]. High Voltage Apparatus, 2017, 53(11):141-145.
[17]	邓元实, 范松海, 龚奕宇, 等. 500 kV架空地线与OPGW绝缘化改造后感应电压研究[J]. 电磁避雷器, 2020, 298(6):21-27.
	DENG Yuanshi, FAN Songhai, GONG Yiyu, et al. Study on induced voltage after insulation reconstruction of 500 kV transmission line overhead ground wire and OPGW[J]. Insulators and Surge Arresters, 2020, 298(6):21-27.
[18]	史志强, 邹德华, 俞乾, 等. 750 kV同塔双回输电线路感应电压和电流的研究[J]. 高压电器, 2018, 54(8):120-126.
	SHI Zhiqiang, ZOU Dehua, YU Qian, et al. Study on the induced voltage and current on the 750 kV double circuit transmission line on the same tower[J]. High Voltage Apparatus, 2018, 54(8):120-136.
[19]	STEVEN C C, RAYMOND P C. 工程数值方法[M]. 北京: 清华大学出版社, 2010.
	STEVEN C C, RAYMOND P C. Numerical methods for engineers[M]. Beijing: Tsinghua University Press, 2010.
[20]	王长清. 现代计算电磁学基础[M]. 北京: 北京大学出版社, 2005.
	WANG Changqing. Fundamentals of modern computational electromagnetics[M]. Beijing: Peking University Press, 2005.

参数	感应电压幅值1/kV		电压幅值2/kV		电压幅值3/kV
电压幅值	A相	11.14	A相	11.14	A相	11.30
	B相	15.71	B相	15.70	B相	15.88
	C相	10.61	C相	10.60	C相	10.77
电压相角	A相	27.93	A相	27.94	A相	25.07
	B相	25.97	B相	25.99	B相	23.66
	C相	26.57	C相	26.58	C相	23.60

线路长度/km	A相电压/kV	B相电压/kV	C相电压/kV
20	20.044	23.408	18.583
25	16.142	18.842	14.977
30	13.585	15.845	12.625
35	11.678	13.647	10.854

超高压输电线路平均对地高度/m	A相电压/ kV	B相电压/ kV	C相电压/ kV
20	14.94	15.95	13.96
24	15.39	16.56	14.51
28	15.31	16.59	14.57

线路之间距离/m	电场强度/(V/m)	磁感应强度/μT
20	3 226.6	1.063 2
24	2 091.1	0.811 9
28	1 478.4	0.662 5

三相对地高度/m	A相电压/kV	B相电压/kV	C相电压/kV
5	2.26	2.07	1.95
6	2.54	2.31	2.18
7	2.81	2.54	2.38
8	3.06	2.76	2.58
9	3.30	2.97	2.77