以含变耦电抗式可控串补装置的伊-冯输电系统为研究对象,仿照TCSC暂稳定控制的过程,对串补装置用于暂稳定控制和阻尼功率振荡进行了仿真分析和试验.在阻尼功率振荡时取状态变量Δω作为变耦电抗调节量ΔX_T的控制参数,论证了ΔX_T对功率振荡的阻尼作用,重新建立了含ΔX_T的转子运动方程.通过调节串补装置的变耦电抗进行了暂稳定控制仿真,并以同样系统的动态模拟装置,采用仿真系统的控制方法,进行了暂稳定控制和阻尼功率振荡试验.仿真分析和试验结果表明,变耦电抗式可控串补能有效地进行暂稳定控制和阻尼功率振荡,阻尼效果比较显著.
With the Yi-Feng transmission system containing the thyristor controlled reactance series compensation by adjustable coupling( TCSCAC )as the research object ,following the process of TCSC for transient stability control simulation analysis and tests are performed on TCSCAC for transient stability control and power oscillation damping.During the power oscillation damping process taking the state variable △ω as control parameter of △X T, damping action of △XT to power oscillation is proved, and rotor motion equation containing △XT is built again.Simulation of transient stability control is conducted by regulating thyristor controlled reactance by adjustable coupling.Adopting control method of simulation system, the tests of transient stability control and power oscillation damping are carried out on the dynamic analog device containing TCSCAC.The results of simulation analysis and test show that TCSCAC is proper and effective for transient stability control and power oscillation damping, and the damping effect is remarkable.