Voltage Stability Compensation in Electronics –Saturated Network Using Unified Power Flow Controller
Keywords:
Active power, reactive power, Unified Powerflow Controller, FACT, STATCOMAbstract
Voltage stability is a critical aspect of power system operation, especially in networks with a high penetration of power electronic loads such as variable speed drives, converters, and renewable energy systems. These electronics-saturated networks often experience voltage fluctuations, harmonic distortions, and reactive power imbalances, which can lead to instability and reduced power quality. The Unified Power Flow Controller (UPFC), a key Flexible AC Transmission System (FACTS) device, offers a comprehensive solution to these challenges by providing simultaneous control of voltage, impedance, and phase angle in the transmission line. This paper presents an approach for voltage stability compensation in electronics-saturated networks using the UPFC. The shunt converter of the UPFC provides reactive power support, maintaining bus voltage levels and mitigating voltage sags caused by nonlinear electronic loads. Simultaneously, the series converter regulates line impedance and power flow, reducing line losses and improving load distribution. Additionally, the coordinated control of the shunt and series converters helps damp power oscillations and improve system resilience against sudden load variations. Advanced control strategies such as Proportional-Integral (PI) controllers, Fuzzy Logic Controllers (FLC), and Model Predictive Control (MPC) are discussed for optimizing the UPFC’s performance under varying load conditions. Simulation results demonstrate that the UPFC significantly enhances voltage stability, reduces harmonic distortion, and improves overall power quality in an electronics-saturated network. The proposed solution is suitable for applications in modern power grids, including industrial plants, electric vehicle charging stations, and smart grid environments.
References
Asha, K., Manjula, M., Sarma, V.R. (2021). Mitigation of Various Power Quality Problems Using Unified Series Shunt Compensator in PSCAD/EMTDC. 16th National Power Systems Conference, 100-105.
Bhowmik, A. and Nandi, C., (2019). Implementation of Unified Power Flow Controller (UPFC) for Power Quality Improvement in IEEE 14-Bus System. International Journal of Computer Technology and Application, 2 (6),1889-1896.
Gaurav, N. and Saxena, N. (2018). Power Quality improvement using UPFC. International Journal of Electrical, Electronics and Computer Engineering, 2(2),30- 33.
Gopinath, N., Vinothini, A., Kumar, S.(2014). Modeling of UPFC Using Model Predictive Control and Bacterial Foraging Algorithm. International Journal of Innovative Research in Computer and Communication Engineering, 2(1), 2724-2731.
Jiang, X. Chow, J.H., Edris, A., Fardanesh, B., Uzunovic, E. (2010). Transfer path stability enhancement by voltage-sourced converter-based FACTS controllers. IEEE Transactions on Power Delivery, 25(3), 1019-1025.
Khonde, S., Dhamse S., Thosar, A.G. (2020). Power Quality Enhancement of Standard IEEE 14 Bus System using Unified Power Flow Controller. International Journal of Engineering Science and Innovative Technology (IJESIT), 3(5), 323-334.
Lakshmi, N., Sravanthi, G., Ramadevi, L., Chowdary, K.H. (2015). Power quality and stability improvement of HVDC transmission System using UPFC for Different uncertainty conditions. International Journal of Scientific & Engineering Research, 6(2), 795-801.
Mathad,V., Basanagouda, F. R., Jangamshetti, S. H., (2018). Voltage Control and Power System Stability Enhancement using UPFC. International Conference on Renewable Energies and Power Quality (ICREPQ’14), 1(12), 871-875.
Mohanty, A., Ahamad, M., Khan, M.A., (2023). Modeling, Simulation and Performance Analysis of FACTS Controller in Transmission line. International Journal of Emerging Technology and Advanced Engineering, 3(5), 429-435.
Nwaorgu, O. A., Ifeagwu, N.E. Udo, E.U. (2016). Cost Analysis of Power Outages in Nigerian University. A case study of Michael Okpara University of Agriculture. Umudike. Umudike Journal of Engineering and Technology (UJET), 1(2), 85-92.
Oputa, O., Diyoke, G. C., Ifeagwu, E. N. (2017). Power Flow Analysis of Electric Transmission System In the Southern Nigeria. Umudike. Umudike Journal of Engineering and Technology (UJET), 2(1), 153-160.
Rai, A. (2018).Enhancement of Voltage Stability and reactive Power Control of Distribution System Using Facts Devices. International Journal of Scientific Research Engineering and Technology, 1(9), 001-005.
Sindekar, A. and Parate, J. (2012). Reactive Power Control and Transmission loss reduction with realization of SVC and TCSC. (Electronic version). International Journal of Engineering Science and Technology. 4 (7), 3592 – 3600
Singh, B. (2010). Incorporation of FACTS Controllers in Newton Raphson Load Flow for Power Flow Operation, Control and Planning: A Comprehensive Survey. (Electronic version). International Journal on Computer Science and Engineering. 2 (6), 2117- 2124
Soruban, J D., Sathyaraj, A., Gnana Chandran, J.J.,(2020). Power Quality Enhancement Using UPFC as an Active Power Filter for Renewable Power Generation. International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, 4(3),1712-1718.
Vaibhav, K., Prashant, P. Khatri, R.(2013).Unified Power Flow Controller for Power Quality Improvement. International Journal of Emerging Science and Engineering (IJESE), 1(10),1-4.
Zhang, C., Rehtanz, A., Pal, B.(2018). FACTS-Devices and Applications in Flexible AC Transmission Systems: Modelling and Control, ed: Springer, 1-30.