摘要
在使用他励式电力换流器的并列式直流多端子送电系统中．根据电力系统的需要．有时对支线换流站进行从整流到逆变、或者与之相反的切换．为了对支线权流站的电压极性进行切换必须使支线换流站与直流系统一时脱离．这样极为不便．为了解决这一问题，如果在需进行上述切换的支线换流站设置双向电力换流器，在进行由整流到逆变、或与之相反的切换时．则不必使支线换流站与直流系统相脱离．只需用正弦波电流跟随控制方式，改变基准电流的振幅或者相位就可以方便地使支线换流站实现从整流到逆变，或从逆变到整流的切换，从而实现在不改变支线换流站电压极性的情况下使换流站根据电力系统的需要进行整流、逆变的功能．
This paper presents the characteristics of DC power transmission with 3 terminal using bidirectional power converter. It was controlled by current follow-up control method. Tapping convcrter is espcially important for multi-terminal DC power transmission when power will be taken out of the main system or put into the main System. In order to Study the characteristics of DC power transmission with 3 terminal using bidirectional power converter, two differcnt method, phase control method and amplifer control method, were used to contro1 bidirectional power converter. These experiment showed that amplifer control method is better than phase control method. The waveforms of the main rcctifier side and the main inverter side were shown while tapping convcrter is uscd as rectifier or invertcr. It is shown that the applicability of bidircctional power convcrter is possible in the future.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
1995年第1期22-25,共4页
High Voltage Engineering
关键词
直流
三端子输电
直流输电
Tapping converter bidirectional power converter current followw-up control phase control method amplifer control method power flow control
