Microgrid is an aggregate of generating units and loads at the distribution level. It operates in two modes: grid connected mode and Islanded mode. Fault clearance in a microgrid is a key challenge for protection engineers. This paper aims to identify the optimized values of time of operation of overcurrent relays in a microgrid network. This paper solves the optimization problem using two methods —Interior Point method and Active Set method. Also three types of relays are used to determine which relay works best in similar constraint environment. These methods aid in providing suitable relay coordination in microgrid and clear the faulty portion of network quickly from the healthy portion of network. © Springer Nature Singapore Pte Ltd. 2017.

Gnana Swathika O V

Electrical

School of Electrical Engineering

Chennai Campus

Hema Malini

Das A

Gupta Y

Mukhopadhyay S

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Optimization of Overcurrent Relays in Microgrid Using Interior Point Method and Active Set Method

Advances in Intelligent Systems and Computing Proceedings of the 5th International Conference on Frontiers in Intelligent Computing: Theory and Applications

Decentralization of electric power is possible with the penetration of distributed generators (DGs) in the microgrid (MG) network. Reconfiguration of MG poses a key challenge in identifying suitable protection schemes for varying the topology of the network. In this paper, a central protection center (CPC) is incorporated whose function is to monitor the MG continuously, identify fault occurrence, and locate the exact faulted branch. The proposed Prim-aided Dijkstra algorithm executed continuously in the CPC is responsible for identifying the current topology of the network and aids in identifying the shortest route from the faulted point to the nearest operating source. The CPC is also responsible for adaptively varying the settings of the relays existing in the shortest path identified based on their selectivity levels. This heuristic algorithm is validated on IEEE 21-bus and 40-bus MG test systems for all possible topologies and faults. The proposed algorithm is capable of clearing the fault by disconnecting minimum portion of the network and ensuring continuity of supply to a majority of loads. © 2013 IEEE.

IEEE Journal of Emerging and Selected Topics in Power Electronics

Prims-Aided Dijkstra Algorithm for Adaptive Protection in Microgrids

An intelligent micro grid controller system with over current protection capability in both the grid-connected and the islanded modes of operation is proposed. To achieve the above strategy a model of small portion of distribution network as if it were a micro grid will be developed and considered. The processor based relays that provide over current protection functions in addition to performing control, measurement, and communication functions will be suitably employed. © 2015 IEEE.

2015 International Conference on Computational Intelligence and Communication Networks (CICN)

Communication Assisted Overcurrent Protection of Microgrid

International Transactions on Electrical Energy Systems

Graph theory-based radial load flow analysis to solve the dynamic network reconfiguration problem

IEEJ Transactions on Electrical and Electronic Engineering

Numerical inverse definite minimum time overcurrent relay for microgrid power system protection

IEEE Transactions on Industrial Informatics

Optimal Dispatch of Electric Vehicles and Wind Power Using Enhanced Particle Swarm Optimization

Journal	Data powered by TypesetAdvances in Intelligent Systems and Computing Proceedings of the 5th International Conference on Frontiers in Intelligent Computing: Theory and Applications
Publisher	Data powered by TypesetSpringer Singapore
ISSN	2194-5357
Open Access	0