Investigation of Power Flow Effect of Serial and Parallel FACTS Devices

Abstract

It is difficult to increase the capacity of the transmission system by establishing new lines or switching to a new voltage level to meet the rapidly rising electricity demand. Thus, there is an increased need for power flow controllers that can increase the capacity of the existing transmission line and control power flows in predetermined transmission corridors. For this reason, in recent years a new class of controllers has emerged called Flexible AC Transmission System (FACTS). It is very important to investigate the advantages of FACTS devices and to model these devices so that power systems can be operated in steady state. In this study, a comprehensive modeling of the most popular FACTS devices for power flow operation was performed. Power flow studies were first performed using the Newton Raphson method for an IEEE 5-bus power system without any FACTS devices. Then, different FACTS controllers were added to the system to perform power flow studies. As a result of the power flow studies performed, it was observed that the FACTS controllers increased the capacity of the existing transmission line and contributed to the voltage stability.

Keywords

• FACTS devices,newton-raphson,power flow,voltage stability

References

1. [1] N.G. Hingorani, L. Gyugyi, and M. El-Hawary, Understanding FACTS: Concepts And Technology of Flexible AC Transmission Systems, IEEE press, 2000.
2. [2] N.G. Hingorani, “Flexible AC Transmission.” IEEE Spectrum, Vol.30, No. 4, 1993, pp.40-45.
3. [3] R.M. Mathur, R.K. Varma, Thyristor-based FACTS Controllers For Electrical Transmission Systems, John Wiley & Sons, 2002.
4. [4] X.P. Zhang, C. Rehtanz and B. Pal. “Congestion Management and Loss Optimization with FACTS. flexible ac transmission systems: modelling and control”, 2006, pp.239-258.
5. [5] V. Yamaçlı, K. Abacı, “Güç sistemlerinde aktif güç kaybının optimizasyonu”, Elektrik – Elektronik – Bilgisayar ve Biyomedikal Mühendisliği Sempozyumu, Kasım 2014.
6. [6] B. Gao, G.K. Morison and P. Kundur, “Towards the development of a systematic approach for voltage stability assessment of large-scale power systems”, IEEE transactions on power systems, Vol.11, No.3, 1996, pp.1314-1324.
7. [7] C.R. Fuerte-Esquivel and E. Acha, ”A Newton-type algorithm for the control of power flow in electrical power networks”, IEEE Transactions on Power Systems, Vol.12,No.4, 1997, pp.1474-1480.
8. [8] E. Acha, C.R. Fuerte-Esquivel, H. Ambriz-Perez and C. Angeles-Camacho, FACTS: Modelling and Simulation in Power Networks, John Wiley & Sons, 2004.

9. [9] Y.H. Song, A. Johns, Flexible AC Transmission Systems (FACTS), IET,1999.
10. [10] F.Milano, “Continuous Newton's method for power flow analysis”, IEEE Transactions on Power Systems, Vol.24, No.1, 2009, pp.50-57.
11. [11] R, Bonert, “A laboratory for power systems control with static converters”, IEEE transactions on power systems, Vol.13, No.1, 1998, pp.15-20.
12. [12] H. Ambriz-Perez, E. Acha C. R. Fuerte-Esquivel, “Advanced SVC models for Newton-Raphson load flow and Newton optimal power flow studies”, IEEE transactions on power systems, Vol.15, No.1, 2000, pp.129-136.
13. [13] Fuerte-Esquivel, C. R. and Acha, E. “Newton–Raphson algorithm for the reliable solution of large power networks with embedded FACTS devices. IEEE Proceedings-Generation, Transmission and Distribution”, Vol.143, No.5, 1996, pp.447-454.
14. [14] A.K. Sahoo, S.S. Dash and T. Thyagaraja, “Power flow study including FACTS devices”, Journal of applied sciences, Vol.10, 2010, pp. 1563-1571.
15. [15] C.R. “Fuerte-Esquivel, E. Acha and H. Ambriz-Perez, A thyristor controlled series compensator model for the power flow solution of practical power networks”, IEEE transactions on power systems, Vol.15, No.1, 2000, pp.58-64.
16. [16] L. Gyugyi, “Dynamic compensation of AC transmission lines by solid-state synchronous voltage sources”, IEEE Transactions on Power Delivery, Vol.9, No.2, 1994, pp. 904-911.