基于一拖多高压变频装置在空分电机启动中应用  

Application of High-voltage Frequency Converter Based on Multi-split in Air Separation Motor Starting

作　　者：张鹏 孟庆宝 ZHANG Peng;MENG Qingbao(Tangshan Tangsteel Gases Co.,bd.,Tangshan,Hebei 063000,China)

机构地区：[1]唐山唐钢气体有限公司,河北唐山063000

出　　处：《冶金动力》2023年第1期52-54,共3页Metallurgical Power

摘　　要：大型高压电动机启动过程中存在较大的瞬时冲击电流,会造成电网电压大幅下降,而瞬时的电压降落会影响电网的电能质量,剧烈情况下可能造成同电网下设备停机。电网对电能质量要求较高,需采用高压变频装置带替原有水阻降压启动方式,在保证互相启动功能的前提下,尽量节省成本。将两台不同品牌高压变频装置设计成互备一拖多形式。The existence of a large transient inrush current in the process of starting a large high-voltage motor can cause a significant drop in the grid voltage, leading to the influence on the power quality of the grid, which even may cause equipment shutdown that powered by the same grid in severe cases. The grid has high power quality requirements,so it is necessary to use high-voltage frequency converter to replace the original waterresistance step-down starting method, so as to ensure mutual starting function on the premise of saving costs as much as possible. Two high-voltage frequency converters of different brands are designed to become the form of mutual backup and multi-split.

关 键 词：互备一拖多 高压变频装置 大型电机 

分 类 号：TB664[一般工业技术—制冷工程]