Refined Transmission Line Model for Half-wavelength Transmission Lines

被引：0
|
作者：
Jiao C. [1 ]
Wang B. [1 ]
Li Y. [1 ]
Sun Y. [2 ]
Qi X. [2 ]
机构：
[1] State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources, North China Electric Power University, Beijing
[2] State Grid Xinjiang Electric Power Company Electric Power Research Institute, Urumqi
来源：
Gaodianya Jishu/High Voltage Engineering | 2018年 / 44卷 / 01期
关键词：
Chain parameter; Half-wavelength; Model; Refined; Transmission line;
D O I：
10.13336/j.1003-6520.hve.20171227001
中图分类号：
学科分类号：
摘要：
The refined transmission line model was used to study the distribution of voltage and current along the half wavelength transmission lines under complicated environments. Based on the multiconductor transmission line theory, a piecewise modeling method was proposed. Considering the complicated environments, the distribution parameters of the line are solved, and each section of the circuit was connected in series through the chain parameter matrix. Combined with some UHV line parameters and segments, the influences of the soil resistivity, adjacent line, load impedance and hybrid transmission line on distribution of voltage, current and power along the half wavelength transmission line were analyzed. The calculation results show that the soil resistivity will affect the half wavelength transmission lines in the three-phase asymmetric operation of the lines. The influences of adjacent lines on the half wavelength transmission lines are related to their length, distance, and location. The smaller the load impedance is, the greater the maximum voltage along the half wavelength transmission lines is. The influence of hybrid transmission lines on the half wavelength transmission line is related to the proportion and location of the mixed lines. And the voltage and current fluctuations along the line is greater if the proportion is higher. Through detailed analysis, the sag coefficient 1/3 is still suitable for half wavelength transmission lines. So it is necessary to consider complicated environment and establish a refined transmission line model for half wavelength line. © 2018, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：3 / 13
页数：10
相关论文
共 16 条
  • [1] Chang H., Li X., Ma Y., Et al., Discharge characteristics of DC system in Zhoushan multi-terminal VSC-HVDC transmission project, High Voltage Engineering, 43, 1, pp. 9-15, (2017)
  • [2] Shu H., Tian X., Bai B., Et al., Fault location for traveling wave based on multi measuring points for UHVDC long distance transmission line, High Voltage Engineering, 43, 7, pp. 2105-2113, (2017)
  • [3] Hubert F.J., Gent M.R., Half-wavelength power transmission lines, IEEE Spectrum, 2, 10, pp. 965-974, (1965)
  • [4] Liang X., Zhang Y., Qin X., Et al., Study on stereoscopic power grid construction based on UHV AC half-wave-length transmission technology, Power System Technology, 40, 11, pp. 3415-3419, (2016)
  • [5] Liang X., Technology research and application prospect of half-wavelength alternating current transmission, Smart Grid, 3, 12, pp. 1091-1096, (2015)
  • [6] Qin X., Zhang Z., Xu Z., Et al., Study on the steady state characteristic and transient stability of UHV AC half-wave-length transmission system based on quasi-steady model, Proceedings of the CSEE, 31, 31, pp. 66-76, (2011)
  • [7] Wang L., Cui X., Research on steady-state operation characteristics of UHV half-wavelength AC power transmission line, Power System Technology, 35, 9, pp. 7-12, (2011)
  • [8] Han B., Lin J., Ban L., Et al., Analysis on electromagnetic transient characteristics of UHV half-wavelength AC transmission system, Power System Technology, 35, 9, pp. 22-27, (2011)
  • [9] Shu H., Cao P., Dong J., Analysis of traveling wave in UHV half-wavelength transmission lines considering frequency dependent characteristics, High Voltage Engineering, 41, 3, pp. 716-723, (2015)
  • [10] Wang X., Du D., Zhou Z., Et al., Adjugate impedance protection of half-wavelength AC transmission Line, Power System Technology, 41, 7, pp. 2347-2352, (2017)
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