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A New GPS-based Digital Protection System for Smart Grids in Loop Structure.
- Source :
- EAI Endorsed Transactions on Cognitive Commumnications; 2017, Vol. 3 Issue 13, p1-8, 8p
- Publication Year :
- 2017
-
Abstract
- This paper presents a new digital protection system to solve the protection challenges in future smart grids, i.e., fast protection and fault isolation in a loop-structured system with limited magnitude of fault current. The new system combines two protection algorithms, i.e., a differential protection as the primary algorithm and an overcurrent protection as the backup one. The new system uses real-time Ethernet and digital data acquisition techniques to overcome the restriction on data transmission over large grids. The current measurements at different locations are time-synchronized by GPS clocks, and then transmitted to a central computer via the Ethernet. As opposed to digital relays which often contain PMU functionality nowadays, this approach uses time stamps on the instantaneous current values. We build a prototype of the new system on a test-bed. The results from simulations and experiments have demonstrated that the protection system achieves fast and accurate protection. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 23134534
- Volume :
- 3
- Issue :
- 13
- Database :
- Complementary Index
- Journal :
- EAI Endorsed Transactions on Cognitive Commumnications
- Publication Type :
- Academic Journal
- Accession number :
- 137656309
- Full Text :
- https://doi.org/10.4108/ew.1.3.e5