基于功率负荷自适应的备自投实现方法  

A Method of Automatic Switchover Device Based on Self-Adaptive Electrical Load

作　　者：赵家庆[1] 霍雪松[2] 钱科军[1] 李澄[3] 陈颢[3] 

机构地区：[1]苏州供电公司,江苏苏州215004 [2]江苏省电力公司,江苏南京210024 [3]江苏方天电力技术有限公司,江苏南京211102

出　　处：《江苏电机工程》2013年第3期50-53,共4页Jiangsu Electrical Engineering

摘　　要：针对电力系统中变电站2台主变容量不一或单台主变容量小于全站负荷功率时,低压备用电源自投(简称备自投)动作易造成小容量主变过负荷运行,而和电流闭锁备自投时易导致半站甚至全站失电的问题,分析了常规备自投过负荷处理方式的不足,提出了可用于传统/智能变电站的基于功率负荷自适应的备自投实现方法。For two main transformers in one power substation, if the capacity of one transformer is not equal to another transformer＇s or less than the total power load of the substation, the action of automatic switchover device will cause the transformer with smaller capacity overload. However, the action of automatic switchover device with current blocking will cause extensive load loss. Based on the detailed analysis in the shortage of the overload management in traditional automatic switchover device, a novel method of automatic switchover device for traditional and smart substation is proposed based on self-adaptive electrical load.

关 键 词：功率负荷自适应 智能变电站 备自投保护 通用数字接口 

分 类 号：TM77[电气工程—电力系统及自动化]