带小电源三线两变扩大内桥接线备自投方案及改进  

Improvement Measures for Backup Power Automatic Switching Scheme in Three-wire Two-Transformer Expanded Bridge Connection with Small Power Source

作　　者：吕庭钦 林峰 张兰英 

机构地区：[1]福州大学电气工程与自动化学院,福建福州350108 [2]国网福州供电公司,福建福州350009

出　　处：《水电与新能源》2014年第7期47-50,共4页Hydropower and New Energy

摘　　要：备自投装置正确动作是提高供电可靠性的重要措施,通过工程实例,分析了带小电源的三线两变扩大内桥接线备自保护动作机理及存在问题,提出改进措施,实现了带小电源的三线两变扩大内桥接线备自投装置的正确动作,提高了变电站的供电可靠性。Correct action of the backup power automatic switching device is important for the reliability of power supply . In this paper , the action mechanism and existing problems are analyzed for the backup power automatic switching scheme in three-wire two-transformer expanded bridge connection with small power source .Improvement measures are proposed to ensure correct actions of the backup power automatic switching device , which could improve the power supply reliability of the transformer substation .

关 键 词：小电源 扩大内桥 备自投 改进措施 

分 类 号：TM645[电气工程—电力系统及自动化]