金中直流马鞍山接地极对周边变压器的影响分析

Influence Analysis of Maanshan Grounding Electrode of Jinzhong HVDC on Transformers Nearby

分析金中直流输电工程马鞍山接地极对周边变压器的影响。提出了马鞍山接地极周边变压器中性点直流电流分布计算模型,并运用CDEGS软件对接地极周边变电站的地电位和流过变压器中性点的直流电流进行仿真计算。计算结果表明,接地极周边变压器的中性点直流偏磁电流均小于允许值,接地极对周边变压器无不利影响。

Influence of Maanshan grounding electrode of Jinzhong HVDC on transformers nearby is analysis,and neutral point DC current distribution calculation model of transformers nearby Maanshan grounding electrode is proposed. Ground potential of substations nearby the grounding electrode and DC currents passing neutral point of transformers are simulated by CDEGS software. Calculation results show that neutral point DC magnetic bias currents of transformers nearby the grounding electrode are all less than the permitted value,which have no adverse effects to transformers nearby the grounding electrode.