%0 Journal Article %A Jong-Ian Tsai and Chi-Chuan Chen and Tung-Sheng Zhan and Rong-Ching Wu %D 2010 %J International Journal of Electrical and Computer Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 41, 2010 %T Depressing Turbine-Generator Supersynchronous Torsional Torques by Using Virtual Inertia %U https://publications.waset.org/pdf/7200 %V 41 %X Single-pole switching scheme is widely used in the Extra High Voltage system. However, the substantial negativesequence current injected to the turbine-generators imposes the electromagnetic (E/M) torque of double system- frequency components during the dead time (between single-pole clearing and line reclosing). This would induce supersynchronous resonance (SPSR) torque amplifications on low pressure turbine generator blades and even lead to fatigue damage. This paper proposes the design of a mechanical filter (MF) with natural frequency close to double-system frequency. From the simulation results, it is found that such a filter not only successfully damps the resonant effect, but also has the characteristics of feasibility and compact. %P 907 - 910