Jong-Ian Tsai and Chi-Chuan Chen and Tung-Sheng Zhan and Rong-Ching Wu
Depressing TurbineGenerator Supersynchronous Torsional Torques by Using Virtual Inertia
907 - 910
2010
4
5
International Journal of Electrical and Computer Engineering
https://publications.waset.org/pdf/7200
https://publications.waset.org/vol/41
World Academy of Science, Engineering and Technology
Singlepole switching scheme is widely used in the
Extra High Voltage system. However, the substantial negativesequence
current injected to the turbinegenerators imposes the
electromagnetic (EM) torque of double system frequency
components during the dead time (between singlepole 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
doublesystem 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.
Open Science Index 41, 2010