【摘要】 针对静止同步串联补偿器(SSSC)常电抗模式下可能引起次同步谐振(SSR)的问题,提出了一种新的SSSC控制模式——电感模式.该控制模式补偿指令为电感,且可正可负,补偿的电抗与线路电抗随次同步频率同比例线性变化.理论和仿真对比分析了次同步频率范围内电感模式和常电抗模式的阻抗特性,证明了电感模式下SSSC不会与线路感抗发生谐振,有效提高线路阻抗,明显抑制次同步电流,消除了系统产生SSR的可能性.更多还原

【Abstract】 The fact that static synchronous series compensator(SSSC) in the constant reactance mode often potentially excite subsynchronous resonance(SSR) motivates to design a novel inductance mode,where the compensation of SSSC in inductance mode and the transmission line impedance are in the same proportion to subsynchronous frequency.A comparison between impedance characteristics of inductance mode and ones of constant reactance mode is made with theoretical analysis and simulation.It is verified that the novel inductance mode is immune to SSR as subsynchronous excitation voltage exists.更多还原