葛—南直流输电系统单极运行对宜昌电网影响情况的分析

Analysis of the Influence about Monopole Operation of Ge-Nan HVDC on Yichang Power Grid

介绍了几次葛—南直流输电系统单极运行时葛州坝换流站接地极对近区220 kV运行变压器的影响情况,分析了这种影响的电气原理和各次的特点,指出其危害性。

The influence on the 220 kV transformers near the earthing pole of Gezhouba right bank converter station,as the Ge-Nan HVDC line operating in monopole mode for sereral times was introduced. The electrical principle and the feature of each case about the influence were analyzed, and its harm was pointed ont.