摘要
本文以糯扎渡-鹤山±800 kV特高压直流输电系统为研究对象,分析了特高压直流输电系统采用单极大地方式运行时直流偏磁产生的原因及对交流变压器本身和电网的影响,对流过变压器绕组直流电流大小的相关问题进行了讨论,并结合目前江门电网的情况提出几点抑制流入变压器中性点地中直流的措施。
In this paper,the Nuozhadu--Heshan UHVDC transmission system is the research object,when unipole--groundreturn mode is adopted by UHVDC system,the reasons of transformer DC magnetic biasing and the influences of DC bias to transformer itself and AC grid were analyzed,the related problems about the size of DC current that has flown the transformer winding were also discussed. Than,combine with the condition of Jiang Men power grid,some measures that could restrain the DC current through transformer neutral voint is vronosed.
出处
《科技资讯》
2013年第10期134-135,137,共3页
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