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In FACTS devices supplementary signals are widely used to enhance damping and mitigation of subsynchronous resonance in power system. Subsynchronous resonance occurs due to series capacitor in the power systems. High value of series capacitive reactance may destabilize low frequency mode which is more dangerous. There are four critical values of series compensation (XC) against which rotor oscillations...
Various auxiliary signal can be used for enhancing the damping performance of STATCOM. In this paper four auxiliary signals e.g. deviation in reactive power, deviation in active power, the combination of the two, and the deviation in bus voltage angle are incorporated in the STATCOM control system. The performance of various auxiliary signals has been evaluated by performing the eigenvalue analysis...
Torsional oscillations of the shaft in steam turbine driven synchronous generator is form of Subsynchronous resonance (SSR) in power system. But SSR can also be revealed in the form of induction generator effect (IGE) in power system. This paper analyses the possibility of the IGE effect of SSR in synchronous generators and proposes its mitigation technique. Flexible AC Transmission System (FACTS)...
Subsynchronous resonance is well known phenomenon in Series compensated transmission line. Flexible AC Transmission System (FACTS) devices can be used to enhance the performance of the transmission line and to mitigate SSR with auxiliary controllers. The use of STATCOM a FACTS device is increasing in the power system for enhancing power transfer capability and dynamic reactive power support in power...
Power flow models for static VAR compensator (SVC) and for the static synchronous compensator (STATCOM) are presented in this paper. The SVC model incorporates both the representations — the variable shunt susceptance as well as the firing angle as the state variables. The STATCOM model is realized by representing the STATCOM as a variable voltage source with maximum and minimum voltage magnitude...
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