300MW火电机组启备变防过载研究与解决方案  

Research and solution on overload prevention of starting and standby transformer for the 2 × 300 MW thermal power units

作　　者：罗丽佳 赵意 孙会凯 王玮 LUO Lijia;ZHAO Yi;SUN Huikai;WAMG Wei(Inner Mongolia Jingtai Electric Power Generation Co.,LTD,Ordos 017000,China)

机构地区：[1]内蒙古京泰发电有限责任公司,内蒙古鄂尔多斯017000

出　　处：《黑龙江电力》2018年第3期240-245,共6页Heilongjiang Electric Power

摘　　要：为解决启备变严重过流和厂用负荷无法自启动问题,针对某电厂2台300 MW火电机组厂用负荷增容后的启备变容量进行核算分析,提出增设启备变防过载逻辑方案,阐述该方案原理及实现过程。实例验证表明,该方案能有效降低启备变过流程度,顺利实现厂用负荷自启动,保障启备变安全运行和厂用负荷供电可靠。For solving the over-current problem of the starting and standby transformer and the self-starting failure problems of the house,load calculation of the capacity of starting and standby transformer for the 2 × 300 MW thermal power units after auxiliary load expansion are carried out. The logic scheme of overload prevention for the starting and standby transformer is put forward,and the principle and implementation process of the scheme are explained in detail. Experiments show that this scheme can effectively reduce the overcurrent of starting and standby transformer,and ensure the smooth implementation of self-starting for the auxiliary loads.. The safe operation of the starting and standby transformer and reliable power supply for the auxiliary loads can be ensured.

关 键 词：启备变 厂用负荷 防过载 自启动 

分 类 号：TM933.3[电气工程—电力电子与电力传动]