半波长输电传输特性的缩尺实验研究

doi:10.19595/j.cnki.1000-6753.tces.180756

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摘要该文根据缩尺等效实验原理,在户外场地搭建了一条长度为1.5km的半波长缩尺实验线路,提升实验线路的工作频率到100kHz,首次开展了半波长输电技术的实验研究。实测了不同末端负载下线路两端、中间、1/4和3/4处电压值,验证了稳态下半波长输电的点对点和过电压特性。测试还表明：在负载极不对称情况下点对点特性会丢失;线路弧垂和换位段数对沿线电压分布的影响较小;线路长度变化的影响则依赖于末端负载类型。

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关键词 ：半波长输电, 缩尺, 实验, 传输特性

Abstract：Based on the scaling principle, a half wavelength scale experimental line of length 1.5km is built in the outdoor field, and the working frequency of the experimental line is raised to 100kHz. The experimental study of the half wavelength transmission technology is first carried out. The voltage values at the ends, middle, 1/4 and 3/4 of the lines under different terminal loads are measured, and the point to point and overvoltage characteristics of the steady half wavelength transmission are verified. The test also shows that the point to point characteristics will be lost in the case of extreme load asymmetry, and the number of line sag and the number of transposition segments have little influence on the voltage distribution along the line, and the effect of line length change depends on the terminal load type.

Key words： Half wavelength transmission scale experiment transmission characteristics

收稿日期: 2018-05-01 出版日期: 2019-06-28

PACS:

TM15

基金资助:国家电网公司科技项目（SGXJDK00DJJS1600151）资助

通讯作者: 焦重庆男,1981年生,博士,副教授,研究方向为电力系统电磁兼容、电磁场理论及其应用。E-mail: cqjiao@ncepu.edu.cn

作者简介: 汪贝男,1993年生,硕士研究生,研究方向为电力系统电磁兼容、电磁场理论及其应用。E-mail: beiwang1314@163.com

引用本文:

焦重庆, 汪贝, 何日, 胡逸帆, 李昱蓉. 半波长输电传输特性的缩尺实验研究[J]. 电工技术学报, 2019, 34(12): 2445-2451. Jiao Chongqing, Wang Bei, He Ri, Hu Yifan, Li Yurong. Experimental Study on Propagation Characteristics of Half Wavelength Power Transmission Lines with Reduced Scale. Transactions of China Electrotechnical Society, 2019, 34(12): 2445-2451.

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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.180756 https://dgjsxb.ces-transaction.com/CN/Y2019/V34/I12/2445

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