基于“一拖多”高压变频器监控系统改进设计研究

Study on Improvement Design of High Voltage Inverter Monitoring System Based on 'Multi-split'

针对高压变频器"一对一"系统运行工况单一、变频器不能互为备用等问题,在深入研究的基础上,改为高压变频器"一拖多"系统,通过增设变频母线和母联断路器,解决了复杂工况下的运行问题;增设公用LCU集中控制高压变频器,采用双网和单机联合控制的方案,有效解决了高压变频器"一拖多"系统的控制问题,在实际工程应用中取得了良好效果。

The high voltage inverter‘one-on-one’system is changed into high voltage inverter‘multi-split’system aiming at the problems that high voltage inverter‘one-on-one’system has single operating condition,the frequency converters can not be standby mutually,etc.on the basis of in-depth study.The operation problem under complex operating condition is solved through increasing inverter bus and bus coupler circuit breaker.Public LCU centralized control high voltage inverter is increased.Double-network and single-machine joint control plan is adopted to effectively solve the control problem of high voltage inverter‘multi-split’system.Excellent effect is obtained in practical engineering application.