Modelling a Static VAr Compensator consist of TCR and TSC

Year 2021, Volume: 16 Issue: 1, 11 - 21, 15.03.2021

Onur Turan , Yavuz Sarı

Abstract

As an alternative to traditional solutions, systems that flexible alternating current transmission systems (FACTS) have been developed in order to make electrical energy systems more efficient, to improve stability and power quality, and these systems have been used in different parts of the world including our country. In general, FACTS can be described as systems providing voltage, impedance and phase angle control in AC systems. With the recent studies, the use of modern technology devices such as static VAr compensator and static synchronous compensator is becoming more common in order to ensure the energy quality in power systems. Furthermore, due to the developments in semiconductor technology, static VAr compensation systems have been started to be applied on medium and high voltage side. The most important feature of these systems is that they can compensate without needing reactive power from the grid. In this study, necessary reactive power required by the system provided by using a static VAr compensator consisting of thyristor-controlled reactor and thyristor switched capacitor structures. In the simulation studies, the reactive energy is supplied through the static compensator instead of the voltage source. In this way, unnecessary capacity utilization in the system was prevented. It is recommended to use static VAr compensators especially where there is unbalanced load and instant reactive power is required.

Keywords

Svc, Tcr, Tsc, Facts

References

• [1] Tukur. A, “Simulation and Analysis of Static Var Compensator with Matlab,” The International Journal of Engineering and Science, Volume 4, Issue 12, PP -07-11, 2015.
• [2] Hingorani N.G and Gyugyi, L., “Understanding FACTS: concepts and technology of flexible AC transmission systems,” IEEE Press, New York, 2000.
• [3] Kıyan. M, “Implementation of a low voltage thyristor controlled reactor based var compensator,” Msc Thesis, Hacettepe University, 2010.
• [4] Mathur. R, and Varma. R. K, “Thyristor-Based FACTS Controllers for Electrical Transmission Systems,” Wiley-IEEE Press, USA, 2002.
• [5] Çitci. A, “Voltage stability analysis based energy function of electrical power ssystems incorporating facts devices,” Phd Thesis, Sakarya University, 2015.
• [6] Esfahani. M. T, Vahidi. B, “Electric arc furnace power quality improvement by applying a new digital and predicted-based TSC control,” Turkish Journal Elec Eng & Comp Science, 2016.
• [7] M. A. Rahman and M. S. Islam, “Voltage Control and Dynamic Performance of Power Transmission Using Static VAR Compensator,” International Journal of Interdisciplinary and Multidisciplinary Studies, Vol 1, No.4, 141-151, 2014.
• [8] A. Garg and S. K. Agarwal, “Modeling and Simulation of Static Var Compensator for Improvement of Voltage Stability in Power System,” International Journal of Electronics Communication and Computer Engineering, Volume 2, Issue 2, 2011.
• [9] M. H. Shwehdi and A. H. Mantawy, “Investigation of Electrical Load Disturbances Influences on Steel Factory Production Lines,” International Journal of Education and Research Vol. 7 No. 1 January 2019
• [10] C. S. Chen, H. J. Chuang, T. Hsu and S. M. Tseng, “Mitigation of Voltage Fluctuation for an Industrial Customer with Arc Furnace,” Power Engineering Society Summer Meeting, Conference Proceedings, 2001.
• [11] M. G. Hemeida, H. R. Hussien and M. A. Abdel Wahab, “Stabilization of a Wind Farm Using Static VAR Compensators Based Fuzzy Logic Controller,” Advances in Energy and Power 3(2): 61-74, 2015.
• [12] Kundur. P, “Power system stability and control,” Mc Graw-Hill Inc, Toronto, 1994.
• [13] Gelen. A, and T. Yalçınöz, “ The behavior of thyristor switched capacitor installed in an infinite bus system,” The IEEE Region 8 Eurocon Conference, pp. 629-632, Saint-Petersburg, Russia, 2009.