高速鐵路諧波對(duì)饋線電纜與信號(hào)電纜的影響
劉楊,方春華,張闖,潘弘
(三峽大學(xué) 電氣與新能源學(xué)院,湖北 宜昌 443002)
摘 要:高速鐵路諧波在饋線電纜中傳輸會(huì)影響?zhàn)伨€電纜的損耗,對(duì)信號(hào)電纜造成干擾。根據(jù)在牽引變電站現(xiàn)場(chǎng)實(shí)際測(cè)量的數(shù)據(jù),運(yùn)用PSCAD/EMTDC仿真軟件,建立了諧波源、牽引變壓器、饋線電纜及信號(hào)電纜的模型,模擬電力機(jī)車運(yùn)行過(guò)程產(chǎn)生的諧波對(duì)饋線電纜和信號(hào)電纜的影響。測(cè)量了饋線電纜與信號(hào)電纜的入地電流,計(jì)算了饋線電纜的損耗,分析了諧波對(duì)信號(hào)電纜的干擾情況。結(jié)果表明,存在諧波時(shí)饋線電纜與信號(hào)電纜的入地電流和感應(yīng)電壓均有不同程度的增加,信號(hào)電纜的入地電流增加更為明顯,饋線電纜的損耗較小。
關(guān)鍵詞:高速鐵路諧波;饋線電纜;信號(hào)電纜;入地電流
中圖分類號(hào):TM714.3;TM24 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2018)01-0006-07
Influence of High-Speed Railway Harmonics on Feeder Cable and Signal Cable
LIU Yang, FANG Chun-hua, ZHANG Chuang, PAN Hong
(College of Electrical Engineering and New Energy, China Three Gorges University, Yichang 443002, China)
Abstract: High-speed railway harmonics transferring in the feeder cable will have impacts on the loss of the feeder cable, so as to disturb the signal cable. According to the actual measured data on the traction substation site, this paper used the simulation software PSCAD/EMTDC to build the harmonic source, traction transformer, feeder cable and signal cable model and simulated the impact of harmonics produced in the operational process of electric locomotive on the feeder cable and the signal cable. The grounding currents of feeder cable and signal cable were measured and the loss of feeder cable was calculated. This paper analyzed the interference of harmonics to the signal cable. The results show that when harmonics exist, both the grounding current and the induced voltage of feeder cable and signal cable increase to a certain extent, the growth of the grounding current of the signal cable is more obvious, and the loss of feeder cable is smaller.
Key words: high speed railway harmonics; feeder cable; signal cable; grounding current
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