摘要
介绍了对南方电网和华东电网在直流输电系统以单极大地回路方式运行时直流接地极地电流对电力变压器的影响以及缓解措施的调查情况,并对接地极地电流对电力变压器的影响进行了分析研究,提出应根据实际运行情况采取合适的保护措施。
This paper introduces the influence of the DC grounding electrode current on power transformers and the mitigation measures when the HVDC transmission system is under the monopolar grounding circuit operation mode in South China Power Grid and East China Power Grid. The influence of the ground electrode current on power transformers is analyzed with a conclusion that the corresponding protection measures should be taken according to actual operation conditions.
出处
《电网与清洁能源》
2010年第1期24-30,共7页
Power System and Clean Energy
关键词
高压直流输电
接地极地电流
电力变压器
直流
偏磁
HVDC transmission
current of grounding electrode
power transformer
DC magnetic bias
