Look up Table Assisted Adaptive Overcurrent Protection of Reconfigurable Microgrids

  • Gnana Swathika O.V. VIT University Chennai
  • Hemamalini S

Abstract

Microgrids are the key solution to handle the growing technical, environmental and economical concerns of existing power system networks. The purpose of this paper is to develop an intelligent and adaptive overcurrent protection system for a microgrid with monitoring and protection control features. A look up table is created and maintained at the central protection system of the microgrid, which has details of normal and fault current in all feeders for various topologies of the microgrid system. It has the optimized values for time multiplier setting and time of operation of relays for faults at a specific location in the reconfigured system, which is generated using Dual Simplex algorithm. Hence the Central Protection System provides suitable relay coordination to the microgrid based on overcurrent condition, which may cause minimum portion of the network disconnection. The hardware prototype of the Central Protection System is realized, tested and validated on a balanced 21-bus microgrid network.


 

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Published
2018-03-25
How to Cite
O.V., Gnana Swathika; S, Hemamalini. Look up Table Assisted Adaptive Overcurrent Protection of Reconfigurable Microgrids. International Journal of Smart Grids, ijSmartGrid, [S.l.], v. 2, n. 1, March, p. 13-26, mar. 2018. ISSN 2602-439X. Available at: <http://www.ijsmartgrid.com/index.php/ijSmartGrid/article/view/11>. Date accessed: 20 apr. 2018.