Stability Analysis of Multi-Machine System using STATCOM
نویسندگان
چکیده
This paper presents the improvement of transient stability of a multi-machine power system with a STATCOM. Transient stability improvement is essential from the view point of maintaining system security that is the incidence of a fault should not lead to tripping of generating unit due to loss of synchronism. Static synchronous compensator is widely used in power system to control power by injecting appropriate reactive power into the system. STATCOM has the capability of improving stability and damping by dynamically controlling it’s reactive power output. The STATCOM is modeled by a voltage source connected to the system through a coupling transformer. The transient stability improvement of the multi-machine power system at different fault condition is investigated in this work. To illustrate the performance of the FACTS controller (STATCOM), a three machine, ninebus Western System Coordinating Council (WSCC) Multi-Machine power System has been considered. The proposed system is also analyzed for different fault clearing times.
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