计及TCSC的交直流系统静态电压稳定性分析

基于交直流系统潮流方程雅可比矩阵的特征结构分析法，提出了一种利用可控串联补偿器(thyristor controlled series compensator，TCSC)提高交直流系统静态电压稳定性的方法。该方法研究了交直流系统潮流方程雅可比矩阵的最小模特征值，以节点电压对无功功率变化的灵敏度为指标，结合参与因子，判断全电网中最有可能发生电压不稳定的节点或者区域，从而为系统无功功率补偿装置的配置提供决策依据。对美国西部5机14节点系统进行了仿真计算，验证了TCSC在交直流系统中提高静态电压稳定性的可行性、有效性和正确性。

Static Voltage Stability Analysis of AC/DC Power Systems With Thyristor Controlled Series Compensator Taken Into Consideration

Based on eigenvalues structure analysis on power flow Jacobian matrix of AC/DC power system, an analysis method to improve static voltage stability of AC/DC power system by use of hyristor controlled series compensator (TCSC) is proposed. For this purpose, the minimum modulus eigenvalue of power flow Jacobian matrix of AC/DC power system is researched; by means of the sensitivity index of nodal voltage to reactive power variation and combining with participating factor, the bus or region where the voltage instability could happen most possibly are judged to provide decision-making foundation for the configuration of reactive power compensation device in power system. Simulation results of WSCC 5-machine 14-bus system show that the improvement of static voltage stability of AC/DC power system by TCSC is feasible, effective and the proposed analysis method is correct.