Thesis
Fault current limitation using a saturable reactor
Washington State University
Master of Science (MS), Washington State University
2017
Handle:
https://hdl.handle.net/2376/102602
Abstract
Increased penetration of the distributed energy sources in the grid and the growth of complex electrical power networks can increase the short-circuit current level of the power system. This increased current level requires upgrading circuit breakers, switches, and other equipment, which can be expensive and cause high copper and switching losses. Fault current limiters are designed to address the impacts of high fault currents. Two different strategies to limit the fault current using a saturable reactor and a dynamic voltage restorer are investigated. By employing the magnetic saturation property of the core with DC bias control, the reactance inserted into the line is varied based on the fault. Fault current limitation through a saturable reactor is also implemented and compared with a dynamic voltage restorer. The case studies are performed on 1) a radial system and 2) the CIGRE-IEEE low-voltage system for both balanced and unbalanced fault conditions. For the radial system, the fault current limited by saturable reactor has significantly smaller magnitude than the DVR, but for a complex interconnected system, this difference is small. Simulation studies performed in the PSCAD/EMTDC simulation environment show that as a fault current limiter, the saturable reactor limits the fault current faster than the DVR.
Metrics
6 File views/ downloads
23 Record Views
Details
- Title
- Fault current limitation using a saturable reactor
- Creators
- Rabia Khan
- Contributors
- Ali Mehrizi-Sani (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- School of Electrical Engineering and Computer Science
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; [Pullman, Washington] :
- Identifiers
- 99900525388101842
- Language
- English
- Resource Type
- Thesis