摘要
介绍了兼具背靠背柔性直流输电(VSC-HVDC)功能的移动式直流融冰装置的设计和试验情况,讨论了该装置的主电路结构,设计了多重化VSC的载波移相控制、PWM整流控制和恒流斩波控制,分析了串联型背靠背VSC-HVDC的控制方法,并介绍了装置的保护策略和试验方案。试验结果表明,所设计的控制方法是正确、有效的,装置完全能满足电网融冰抗灾的要求,并可进行中小功率的柔性直流输电。
The design and test of movable DC deicing device with back-to-back VSC-HVDC function are introduced.Main circuit structure of the device is discussed.Carrier phase-shifting control,PWM rectifier control and chopping control for constant current of multiple voltage source converters are designed.Control method of series back-to-back VSC-HVDC is analyzed.The protection strategy and the test scheme of the device are introduced.Test results testify the feasibility and validity of the control method.The device is satisfied with the deicing request of power grid,and is capable of carrying out VSC-HVDC with medium and small power.
出处
《大功率变流技术》
2010年第6期36-40,45,共6页
HIGH POWER CONVERTER TECHNOLOGY
作者简介
罗文广(1983-),男,硕士,工程师,主要从事电力电子变换器控制系统的开发
张志学(1973-),男,博士,高级工程师,研究方向为电力电子变换器、无功补偿、电力电子故障诊断等。