This paper presents a procedure for designing a supplementary damping stabilizer for a static synchronous series compensator(SSSC) in multi-machine power systems.The objective is to shift the lightly damped inter-area...This paper presents a procedure for designing a supplementary damping stabilizer for a static synchronous series compensator(SSSC) in multi-machine power systems.The objective is to shift the lightly damped inter-area modes toward the prescribed stability region.A lead-lag stabilizer is used to demonstrate this technique,in which a particular measure of stabilizer gain is considered as an objective function.Constraints of the problem for phase-lead and lag structures are derived.The objective function with the constraints is formed as a quadratic mathematical programming problem.For robust design,the parameters of the stabilizer are calculated under various operating conditions.Two types of SSSC-based stabilizer have been presented and designed.Numerical results including eigenvalue analysis and the nonlinear simulations on the 4-and 50-machine power systems are pre-sented to show the effectiveness of the proposed method.展开更多
为降低风电并入对风火打捆系统暂态稳定的不利影响,提出将电阻型限流式静止同步串联补偿器SSSC(static synchronous series compensator)串联到风火打捆系统的联络线上,以提高风火打捆系统的暂态稳定性。通过借助双馈风电机组DFIG(doubl...为降低风电并入对风火打捆系统暂态稳定的不利影响,提出将电阻型限流式静止同步串联补偿器SSSC(static synchronous series compensator)串联到风火打捆系统的联络线上,以提高风火打捆系统的暂态稳定性。通过借助双馈风电机组DFIG(doubly-fed induction generator)等值外特性参数来构造风火打捆系统暂态稳定数学模型,建立相应功率特性方程。在分析电阻型限流式SSSC工作原理的基础上,建立不同运行状态下含电阻型限流式SSSC的风火打捆系统功率特性方程,并借助功角特性曲线对系统进行暂态稳定的机理研究,最后进行仿真验证。结果表明,限流式SSSC有效地提高了风火打捆系统的暂态稳定性。展开更多
传统的线性PI控制器在非线性系统的特定运行点有较好的性能,但在其他运行点它的性能会降低。应用启发式动态规划算法设计了静止同步串联补偿器(Static Series Synchronous Compensator,SSSC)的外部非线性最优神经控制器,总共包含3个神...传统的线性PI控制器在非线性系统的特定运行点有较好的性能,但在其他运行点它的性能会降低。应用启发式动态规划算法设计了静止同步串联补偿器(Static Series Synchronous Compensator,SSSC)的外部非线性最优神经控制器,总共包含3个神经网络;第一个为模型网络,它的主要作用是模拟系统的输入输出动态特性;第二个为神经网络为评价网络,它的主要作用是评价动作网络给出控制量的好坏;第三个为动作网络,它的作用是产生控制量;这三个为神经网络互相协作,从而得到最佳的控制序列。在Matlab/Simulink动态仿真环境中搭建了含SSSC双机电力系统的仿真模型,并对线路阻抗的调节过程和电容电压的变化过程进行了仿真,与传统的PI控制器相比,具有响应快、超调小的特点。展开更多
文摘This paper presents a procedure for designing a supplementary damping stabilizer for a static synchronous series compensator(SSSC) in multi-machine power systems.The objective is to shift the lightly damped inter-area modes toward the prescribed stability region.A lead-lag stabilizer is used to demonstrate this technique,in which a particular measure of stabilizer gain is considered as an objective function.Constraints of the problem for phase-lead and lag structures are derived.The objective function with the constraints is formed as a quadratic mathematical programming problem.For robust design,the parameters of the stabilizer are calculated under various operating conditions.Two types of SSSC-based stabilizer have been presented and designed.Numerical results including eigenvalue analysis and the nonlinear simulations on the 4-and 50-machine power systems are pre-sented to show the effectiveness of the proposed method.
文摘传统的线性PI控制器在非线性系统的特定运行点有较好的性能,但在其他运行点它的性能会降低。应用启发式动态规划算法设计了静止同步串联补偿器(Static Series Synchronous Compensator,SSSC)的外部非线性最优神经控制器,总共包含3个神经网络;第一个为模型网络,它的主要作用是模拟系统的输入输出动态特性;第二个为神经网络为评价网络,它的主要作用是评价动作网络给出控制量的好坏;第三个为动作网络,它的作用是产生控制量;这三个为神经网络互相协作,从而得到最佳的控制序列。在Matlab/Simulink动态仿真环境中搭建了含SSSC双机电力系统的仿真模型,并对线路阻抗的调节过程和电容电压的变化过程进行了仿真,与传统的PI控制器相比,具有响应快、超调小的特点。
