特高压换流站站用电系统备自投可靠性提升研究

Research on Reliability Improvement of Automatic Switching Logic of Station Power Supply System in Converter Station

以±800 kV特高压某换流站站用电系统为例,详细介绍其系统组成、10 kV以及400 V备自投系统逻辑,并结合10 kV和400 V备自投逻辑,分析其存在的问题,提出科学合理的改进建议,提升站用电及直流输电的可靠性。

The station power supply system of±800 kV ultra-high voltage Shaoshan converter station is taken as an example in this paper.The composition of the whole station power supply system and the automatic switching logic of 10 kV and 400V power supply are introduced.In view of the problems existing in the automatic switching logic of 10 kV and 400 V power supply,scientific and reasonable suggestions are introduced to improve the reliability of the DC transmission system.