大容量电动机降压启动压降计算及分析  

Calculation and Analysis of Voltage Drop of High-capacity Motors While Reduced Voltage Starting

作　　者：邹颖[1] 邹威雄 ZOU Ying, ZOU Weixiong(1.Hubei University of Technology, Wuhan 430068, China; 2.Shenzhen Diyuan Engineering Consulting Co., Ltd., Shenzhen 518027, Guangdong Province, Chin)

机构地区：[1]湖北工业大学,武汉市430068 [2]深圳迪远工程审图有限公司,广东省深圳市518027

出　　处：《建筑电气》2018年第6期27-30,共4页Building Electricity

摘　　要：结合实际工程,重点讨论"其中一台变压器1 250 kVA对应一台1 100冷吨离心式水冷冷水机组及其配套冷冻泵、冷却泵、冷却塔风机"中大容量冷水机组电动机699 kW采用0.38 kV低压配电、Y/△降压启动压降计算及分析,验证引起变电所母线上电压变动能否满足设计规范的要求。Combined with the practical project,the calculation and analysis of the voltage drop of a699 kW motor of a high-capacity water chilling unit（ of which one 1 250 kVA transformer corresponds to one centrifugal water chilling unit with 1 100 ton of refrigeration（ RT） and its supporting facilities, such as freezing pump, cooling pump and cooling tower fan） with 0. 38 kV low voltage and Y/△ reduced voltage starting is discussed emphatically to verify that whether the voltage variation on the substation busbars can meet the requirements of design specifications.

关 键 词：频繁启动 Y/△降压启动 压降计算 电压波动 预接负荷 短路容量 等效电路 电压相对值 

分 类 号：TU852[建筑科学]