access icon free SS resonance analysis of complex power system incorporating wind power

© The Institution of Engineering and Technology
Received 26/04/2016, Accepted 18/09/2016, Revised 20/08/2016, Published 21/09/2016

This study aims to conduct the sub-synchronous (SS) resonance analysis of a multi-machine power system incorporating doubly fed induction generator (DFIG)- or permanent magnetic synchronous generator (PMSG)-based wind farm. The linearised equations involving the dynamics of steam turbine generator, wind farm, shunt capacitor, transmission line, and load are derived, and the detailed state matrix formation process pertinent to each component is presented. Taking the IEEE 16-machine-68-bus test system as example, the eigenvalue analysis along with participation factor is applied to investigate the impacts of the series compensation level of transmission line on the modal frequencies and damping ratios of two groups of oscillatory modes of interest: namely, the SS mode of the series-compensated transmission line and the shaft modes of the studied steam turbine generator before and after one of the un-studied steam turbine generators is replaced by the DFIG- or PMSG-based wind farm. Some useful conclusions and comments are drawn.

Inspec keywords: steam turbines; eigenvalues and eigenfunctions; asynchronous generators; wind power plants

Other keywords: transmission line; state matrix formation process; PMSG; eigenvalue analysis; subsynchronous resonance analysis; doubly fed induction generator; wind farm; SS resonance analysis; linearised equations; series-compensated transmission line; permanent magnetic synchronous generator; complex power system; IEEE 16-machine-68-bus test system; wind power; steam turbine generator; shunt capacitor; multimachine power system

Subjects: Asynchronous machines; Steam power stations and plants; Linear algebra (numerical analysis); Wind power plants

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