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IJSTR >> Volume 8 - Issue 10, October 2019 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Strengthening The Transient Stability Of A Power Grid Coupled With Wind Turbine Using Thyristor Controlled Series Capacitor

[Full Text]

 

AUTHOR(S)

Nice Enyonam Akpeke, Christopher Maina Muriithi, Charles Mwaniki

 

KEYWORDS

Critical clearing time, permanent magnet synchronous generator, thyristor controlled series compensator, transient stability, wind power conversion system.

 

ABSTRACT

The increase diffusion and circulation of wind energy to the conventional power system due to rapid growth of energy demand has led to consideration of different wind turbine generator technologies. It has been discovered that, a power system experiences inevitable changes in its dynamic behavior when connected with Direct Drive Synchronous Generator (DDSG). In cases of an unexpected loss of a power source or a huge load, the frequency of the power system decreases, which eventually leads to difference in speeds between grid and the interconnected wind generator. It is therefore necessary to use FACTS devices among other methods to advance the dynamic behavior for a convectional power structure. This paper therefore focusses on enhancing PMSG-based system transient during 3ph fault situations. Reference is made to the Critical clearing time (CCT) as an evidence for evaluating the transient state for the system. Under the studies of 14-bus test system of IEEE and in PSAT, the critical clearing time for power system integrated to PMSG-based power turbine is improved with a Thyristor Controlled Series Capacitor (TCSC). One synchronous generator in the test network was replaced at random with the PMSG-based wind power source, intended to produce an equivalent power. Time domain (TD) simulations are performed considering two study cases. Simulation results show that, the CCT of the system with TCSC is longer than the CCT of system without TCSC, which is an indication of transient stability improvement.

 

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