【摘要】 针对电力系统稳定器(power system stabilizer,PSS)和可控串联补偿器(thyristor controlled series compensa- tors,TCSC)的附加阻尼控制器能分别有效阻尼机间振荡和区域振荡的特点,提出一种采用单纯形-模拟退火法对PSS和TCSC阻尼控制器进行协调优化的设计方法．该方法结合单纯形算法局部搜索速度快和模拟退火算法全局搜索能力强的优点,将单纯形算法作为模拟退火算法的局部寻优算子,以增强算法的搜索能力和效率．同时,优化中使用的目标函数考虑了系统多种典型运行方式下的机电振荡模态性能,因而设计出的阻尼控制器具有较强的鲁棒性．在4机11节点电力系统上运用该优化方法完成了阻尼控制器的协调设计．特征值分析和非线性时域仿真结果显示,使用该方法设计的PSS和TCSC阻尼控制器对不同的运行方式都能有效抑制系统低频振荡．此外,算例分析结果证实了单纯形-模拟退火算法搜寻能力高、不强烈依赖初始值选择的优点．更多还原

【Abstract】 Power system oscillations of both local mode and inter-area mode can be successfully suppressed if auxiliary damping controllers,such as power system stabilizer(PSS)or those installed on thyristor controlled series compensators(TCSC),are well tuned.Based on a simplex-simulated annealing(SSA)algorithm,an approach is presented for optimal coordinated design of parameters of PSS and TCSC damping controller.As the simplex formulation is taken as the local searcher in an SA framework to enhance searching efficiency,the SSA algorithm has intrinsic advantages of both fast searching ability as simplex method does,and the ability to reach a global optimization inherited from the SA method.By considering multiple representative operating conditions in constructing the objective function,robustness of the damping controllers is ensured.A valid example is demonstrated on the 4-generator 11-bus test system.Eigenvalue analysis and nonlinear simulation results verify that the proposed PSS and TCSC damping controller can provide sufficient damping to low-frequency oscillations in different operation modes.In addition,the SSA algorithm is insensitive to initial values and it converges to the optimal solution much faster than SA method.更多还原