浅析大功率电动机起动与变压器容量的匹配  

Discussion of High-Power Motor Capacity Match with Transformer

作　　者：郭丹春 GUO Danchun(Bosch(China)Investment Co.,Ltd.,Shanghai 200335,China)

机构地区：[1]博世(中国)投资有限公司,上海200335

出　　处：《现代建筑电气》2024年第6期37-42,共6页Modern Architecture Electric

摘　　要：针对苏州某工厂的冷冻机设备起动过程中发生高压柜跳闸事故及安徽滁州某家电园大型冷冻机起动和运行过程中出现变压器过载事故,分析了这两个事故,发生事故的根本原因在于大型电动机的起动功率和变压器容量选择不相匹配。提出合理选择变压器容量并与大功率电动机设备功率相匹配,提高电动机电压供电等级,降低软起动器的起动设定上限值等预防技术措施,避免此类事故再次发生。By analyzing two accidents of high-voltage switchgear trip off in Suzhou plant and short-term overload of transformers in Chuzhou plant during the startup of high-power motor equipment,it is analyzed that the fundamental reason for the accident is the mismatch between the transformer capacity and selection of large motors.Provide the preventive technical measures,reasonable selection of transformer capacity and match it with the power of high-power motor equipment,Raise the high voltage supply level of the motor and reduce the upper limit value of the soft starter startup setting value to avoid the accident recurred.

关 键 词：起动峰值电流 过流保护整定值 软起动器 大功率电动机 

分 类 号：TU855[建筑科学]