摘要
高压直流输电系统功率/电压静态稳定性与所连接的交流系统的强弱及其所采用的控制方式密切相关。阐述了用于分析直流输电系统功率/电压静态稳定性的系统小信号模型及分析方法,对不同控制下系统静态稳定指标进行了分析,结论表明,弱交流系统的功率稳定性与电压稳定性都较差,随着SCR的逐渐增大,都将有所改善;逆变器采用定直流电压控制比采用定熄弧角控制时系统的功率稳定性与电压稳定性要好。
The power/voltage static stability of the HVDC system has a close relationship with the AC system it connected and the control methods it adopts. The system small signal model for analyzing the power/voltage static stability for the HVDC system is recommended, as well as the analytic method. Analysis of system static stability indices under different controls shows that the power/voltage static stability of the HVDC system linking with a weak AC system is always not good, and the stability becomes better with a larger SCR. In addition, when the inverter adopts constant DC voltage control, the power/voltage static stability of the HVDC system is better than the one when constant extinction angle control is adopted by the inverter.
出处
《华东电力》
北大核心
2006年第3期16-19,共4页
East China Electric Power
