Abstract
Problem statement: The Interline Power Flow Controller (IPFC) is a novel device which can increase transient stability of power system. To verify the capability of the effect of IPFC on stability improvement of power system, the suitable mathematical model and control strategy of IPFC are needed to be presented. Approach: This study presented the mathematical model and control strategy of IPFC. The multi-series converters of IPFC are represented by multi-series voltage sources with associate transformer leakage reactance. The parameters of IPFC are modeled into power flow equation and thus it is used to determine control strategy. This study used Bang-Bang control strategy. The swing curves of the three phase faulted power system without and with an IPFC are tested and compared in various cases. Results: The swing curve of system without an IPFC get increased monotonically and thus the system can be considered as unstable whereas the swing curves of system with an IPFC can return to stable equilibrium point. Conclusion: The presented model of IPFC can help us to comprehend the effect of IPFC on transient stability improvement of power system. From simulation results, the IPFC can increase transient stability of power system.
Highlights
Transient stability improvement is one of the important aspects in modern power system
The presented mathematical model and control strategy of Interline Power Flow Controller (IPFC) is used to study the effect of IPFC on transient stability improvement of the system of Fig. 3
This study investigates the capability of the Interline Power Flow Controller (IPFC) on transient stability improvement of the system
Summary
Transient stability improvement is one of the important aspects in modern power system. The innovative Flexible AC Transmission System (FACTS) devices have been proposed during the last three decades and provide better utilization of existing. This study presents the mathematical model of power system equipped with an IPFC. The presented mathematical model is applied to design control strategy of an IPFC. This study applies the Bang Bang control to design the control law of an IPFC. The simulation results are tested on a Single Machine Infinite bus system. There are various forms of FACTS devices such as Static Synchronous Series Compensator
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