基于“一拖多”高压变频器监控系统改进设计研究
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摘要
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.
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.
引文
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[2]云南省水利水电勘测设计研究室,牛栏江—滇池补水工程协调领导小组办公室.泵站大容量变频器与电动机变速运行研究与实践[M].北京:中国电子工业出版社,2014.
[3]张选正.中高压变频器应用技术[M].北京:电子工业出版社,2007.
[4]赵志东.基于高精度数字锁相环的高压软起动变频器设计与实现[D].北京:中国科学院大学,2014.
[5]魏蕾.基于PLC及变频器调速器多电机控制研究[D].大连:大连交通大学,2009.
[6]韦立祥,孙旭东,刘丛伟,等.高性能三电平多电平异步电动机调速控制系统的研究和实现[J].清华大学学报,2007(7).
[7]朱洪波,于庆广.高压变频器与工频电源之间软切换方式的研究[J].电力系统自动化,2004(6).
[8]周小庆,唐鸿儒.泵站自动化技术研究[J].水利水文自动化,2003(4).
[9]杨俊,杨燕,顾翔.淮阴三站变频设备存在问题及改进措施[J].中国水能及电气化,2017(10).