备自投装置动作引起过负荷的解决方案  

Solution to overload caused by automatic bus transfer device action

作　　者：杨启洪[1] 赵伟杰[1] 陈善文[1] 杜松献 孟乐 

机构地区：[1]广东电网公司佛山高明供电局,广东佛山528500 [2]许继德理施尔电气有限公司,河南许昌461000 [3]许继电气公司技术中心,河南许昌461000

出　　处：《电力系统保护与控制》2015年第12期145-149,共5页Power System Protection and Control

摘　　要：分析了备用电源自动投入装置动作后出现过负荷的原因和现有解决方案。从提高电力系统供电可靠性角度比较分析了各种过负荷解决方案的优缺点、适合使用的工况及其使用注意事项,并对其实施方案加以改进,提出了一种适用于智能变电站的备自投动作时智能联切负荷的过负荷解决方案。该方案具有备自投动作可靠性高、避免对系统造成过负荷冲击和负荷量切除精确度高三个方面优点。同时提出了一种用于智能切负荷联切出口矩阵的在线生成方法。Causes and solutions of overload after automatic bus transfer action are analyzed. From the perspective of power system reliability, the advantages and disadvantages of these overload solutions are compared, their working conditions and announcement are obtained, and the implementation schemes are improved. Finally, smart overload cutting when automatic bus transfer action is presented as a new solution, which applies to automatic bus transfer devices in smart substation. This new solution can improve reliability of automatic bus transfer, avoid overload and cut load exactly. At the same time, a method is proposed for smart overload cutting solution to get export matrix online.

关 键 词：备自投 过负荷 和电流闭锁 负荷均分 智能联切 供电可靠性 

分 类 号：TM762.1[电气工程—电力系统及自动化]