考虑暂稳约束下含TCSC联络线的传输能力

可控串补(TCSC)通过改变线路电抗值即改变网络结构来实现对系统的控制.随着现代电力系统的发展,系统规模越来越大、电压等级越来越高,电网输送能力赶不上负荷的需求、而电力市场化运营又需要系统采用更多的控制手段,在输电电网中应用TCSC来增加输电能力、控制系统潮流、提高系统稳定性显得尤为迫切.文中研究输电线路安装了TCSC...

Transmission Ability Study of Tie-line Mounted TCSC Considering Transient Ability Const

TCSC(thyristor controlled series capacitor) is a device belonging to FACTS(Flexible AC Transmission System) which began to develop in the seventies of last century.TCSC can change network parameters by changing the line reactance value to achieve control of system.With the development of modern power system,the system size increasing,more and more high-voltage level has been using.As transmission capacity can not meet the needs of load growth,and power market operation needs to use more control means,using TCSC to increase transmission capacity,control power flow and improve stability of the system is urgent.In the paper a transient flow analysis and control mode of TCSC the system was established.With a three-phase short-circuit fault occurring at the terminal of the tie-line,the tie-lines’ transmission capability of multi-machine systems satisfying transient stability was studied.The simulation result shows that the discrete controller of TCSC enhances significantly the transmission capability with conventional controllers.