Studies on Voltage Profile Improvement and Power Flow Control in Ethiopian Transmission Networks using FACTS Devices
| dc.contributor.advisor | N. P. Singh (Prof.) | |
| dc.contributor.author | Dagnachew Solomon | |
| dc.date.accessioned | 2023-12-14T14:49:59Z | |
| dc.date.available | 2023-12-14T14:49:59Z | |
| dc.date.issued | 2022-07 | |
| dc.description.abstract | At present Ethiopian transmission network is operating at its full capacity due to increased demand resulting in unbalances in power flows and voltage profile violations. Control of power and voltage through appropriate allocation of active and reactive power suppliers increases system efficiency without the need to expand and build new power generation and transmission facilities. Flexible AC Transmission System (FACTS) controllers employ the latest technology in the design of power electronic switching devices for electric power transmission systems to control voltage and power flow and improve voltage regulation. This study investigated the control ability of employed Thyristor Controlled Series Capacitors (TCSCs) in the alleviation of line congestion, loss minimization, and Static Var compensators (SVCs) in enhancing system voltage profiles in Ethiopian high voltage transmission networks. Modeling and simulation of the transmission network with the incorporation of the FACTS devices have been performed using PSAT/MATLAB toolbox. The sensitivity analysis technique was performed on base case power flow results for optimal placement of the controllers. It is shown how the system behaves and performance is improved with comparative case studies without and with the devices. The final power flow solution result with four FACTS (two TCSC and two SVC) show the improvements and reduction of system maximum line loading, total real power loss, and voltage regulations from 91.16%, 4.46% (115.1 MW), and 15.6% base case to 81.47%, 3.68% (94 MW), and 7.3% respectively by the FACTS. | |
| dc.identifier.uri | http://etd.aau.edu.et/handle/123456789/975 | |
| dc.language.iso | en_US | |
| dc.publisher | Addis Ababa University | |
| dc.subject | TCSC; SVC; Optimal Placement; Sensitivity Analysis; Reactive Power Control | |
| dc.title | Studies on Voltage Profile Improvement and Power Flow Control in Ethiopian Transmission Networks using FACTS Devices | |
| dc.type | Thesis |