Abstract
Problem statement: The critical clearing time provides very important role of the robustness in power system. The Static Synchronous Series Compensator (SSSC) has been accepted to be equipped in series with modern power system. This study presents the method to evaluate the Critical Clearing Time (CCT) of the system equipped with a SSSC. Approach: The parameter on SSSC is modeled in energy function. The presented energy function is applied to determine CCT of the system. The verification of the proposed method is tested on sample system. Results: The maximum generator rotor angle of the faulted system without a SSSC is continuously oscillation and the maximum value is much more than the system with a SSSC. Conclusion: SSSC based the proposed nonlinear control can damp power system oscillation.
Highlights
Power engineers are much more concerned about stability problem due to the complicated network of power system
To asset the Critical Clearing Time (CCT) by using time domain simulation method, it is time consuming process because it requires numerous of scenarios of the fault occurrence A Static Synchronous Series Compensator (SSSC) is a member of the Flexible AC Transmission System (FACTS) family that is connected in1 shunt with power system
The CCT of the system with a SSSC is estimated from the proposed energy function and it is compared with the time domain simulation method
Summary
Power engineers are much more concerned about stability problem due to the complicated network of power system. (Chen, 2011; Kouzou et al, 2010; Kumkratug, 2010a; Omar et al, 2010; Zhihuan, et al, 2010; Osuwa and Igwiro, 2010) They have proposed many methods to improve stability of power system such as load shedding, High Voltage Direct Current (HVDC), Flexible AC Transmission system (FACTS), etc (Al-Husban, 2009; Barbuy et al, 2009; Hannan et al, 2009; Kumkratug, 2010b; Mohammadi-Ivatloo, 2009; Sahoo, et al, 2010; Zarate-Minano et al, 2010). The CCT of the system with a SSSC is estimated from the proposed energy function and it is compared with the time domain simulation method. This study will further develop control strategy of the SSSC
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