A Comparative Analysis of STATCOM, SVC, TCSC and UPFC for Voltage Stability and Power loss Reduction in Power System Network

• Author(s): D. C. Oyiogu ; C A.Obiora-Okeke ; A. O. Aniagboso
• Paper ID: 1705419
• Page: 500-510
• Published Date: 30-01-2024
• Published In: Iconic Research And Engineering Journals
• Publisher: IRE Journals
• e-ISSN: 2456-8880
• Volume/Issue: Volume 7 Issue 7 January-2024

Abstract

Power system stability is the ability of a power system which enables it to stay in a stable operating equilibrium under normal conditions and to return to a stable state after it has been subjected to a disturbance.. (Anbarasan and Sanavulah, 2012); A power system becomes unstable when voltages uncontrollably decrease due to outage of equipment, sudden increment in load. (Anbarasan and Sanavulah, 2012); One of the major reasons for voltage instability is reactive power imbalance in the system. This affects the load ability of a bus in a power network. When the power flow increases, there will be a corresponding decrease of the voltage at the bus. Continuous increase in the loading of the network results in shortage of reactive power. Thereafter, if the active and reactive power transfer increases, there will be a quick decrease in the voltage magnitude at the bus. As critical point is reached, heavy reactive power losses lead to a high voltage drop which consequently leads to voltage collapse. Power electronic based equipment such as FACTS (Flexible AC Transmission System) controllers with their ability to rapidly respond to system events and improve the quality of power delivered constitutes one of the technical advancements which address the operating challenges that are being presented today. The power flow through a transmission line is dependent on three major parameters: Voltage magnitude of the buses (V), the impedance of the transmission line (Z), and the phase angle between the buses (?). FACTS devices are used to control one or more of these parameters through the placement and coordination of multiple FACTS controllers in large scale power networks. This helps in achieving significant improvement in the operating parameters of the power system such as transient stability, voltage profile of the power system, dynamic performance of the power system, transfer capability through the lines, efficiency and quality of the power system. This paper presents a comparative analysis and review of FACTS controllers such as STATCOM, SVC, TCSC and UPFC for voltage stability and power loss reduction in power system networks. The voltage stability and loss reduction of the various FACT devices were simulated and compared using the NEPLAN Engineering software. The result showed that UPFC offered the best voltage stability and power loss reduction. This was followed by STATCOM, SVC and TCSC which also showed a good voltage stability and power loss reduction as well.

Citations

IRE Journals:
D. C. Oyiogu , C A.Obiora-Okeke , A. O. Aniagboso "A Comparative Analysis of STATCOM, SVC, TCSC and UPFC for Voltage Stability and Power loss Reduction in Power System Network" Iconic Research And Engineering Journals Volume 7 Issue 7 2024 Page 500-510

IEEE:
D. C. Oyiogu , C A.Obiora-Okeke , A. O. Aniagboso "A Comparative Analysis of STATCOM, SVC, TCSC and UPFC for Voltage Stability and Power loss Reduction in Power System Network" Iconic Research And Engineering Journals, 7(7)