直流输电系统控制参数对交直流连接母线电压幅值的影响

该文采用灵敏度分析方法对交直流输电系统稳态运行条件下的相互影响做了详细分析。讨论了不同控制方式下的直流输电系统控制参数改变使得它输送的有功功率和吸收的无功功率发生变化,导致交直流连接节点电压的变化。分析了交直流系统之间联结节点上交流电压变化对直流输电系统的影响。该文结合交直流输电系统的计算结果,总结了交直流输电系统控制变量之间相互影响的方式和大小,对认识交直流输电系统之间稳态运行条件下的相互作用有实用的价值。

Sensitivity Analysis for AC/DC Hybrid Power Systems

Based on sensitivity analysis, this paper investigates the interactions between AC and HVDC systems in steady-state operation condition of electric power system. Changes of active power transmission and reactive power consumption in HVDC system, caused by adjustment of HVDC system control devices for adapting various operation conditions, are discussed in this paper. The effect of the changes of the voltages at the jointing nodes between AC system and HVDC system on the state of HVDC system is analyzed. Numeric simulations have been done and the inter-influence between AC and HVDC system control adjustment is tested. It can be obviously seen that the interactions between AC and HVDC systems in steady-state condition are easily analyzed by using the sensitivity analysis method proposed by this paper.