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Solid-state fault isolation devices: application to future power electronics-based distribution systems.
- Source :
-
IET Electric Power Applications (Institution of Engineering & Technology) . Jul2011, Vol. 5 Issue 6, p521-528. 8p. 4 Diagrams, 2 Charts, 7 Graphs. - Publication Year :
- 2011
-
Abstract
- This study addresses the timely issues of modelling, and defining selection criteria for, a solid-state fault isolation device (FID) intended for use in power electronics-based distribution systems (PEDS). This work subsequently derives the FID parameters by mapping the characteristics of a conventional medium-voltage distribution system onto that of the PEDS envisioned under a new multi-university Engineering Research Centre. When conventional circuit breakers are used in distribution systems, they have a relatively long clearing time, causing the voltage to collapse for a significant time. A semiconductor circuit breaker, however, is expected to be able to switch fast enough to keep a voltage disturbance within acceptable limits. The main focus of this study is to address the operational issues of the interaction between the power electronic converters and the solid-state FID. The utilisation of rate of current decrease (di/dt) control during turn-off in conjunction with passive clamping devices to manage the overvoltage that results from very fast circuit breaker operation is introduced. In contrast to a simple conventional RC-snubber circuit, the proposed overvoltage management avoids high leakage current, which is the undesirable drawback of RC-snubber circuits. The presented prototype is experimentally verified with low and medium-voltage test circuits. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 17518660
- Volume :
- 5
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- IET Electric Power Applications (Institution of Engineering & Technology)
- Publication Type :
- Academic Journal
- Accession number :
- 62961838
- Full Text :
- https://doi.org/10.1049/iet-epa.2010.0258