Protection system includes a series of devices whose main purpose is to protect people and primary electric power equipment from the effects of faults. Fault currents cause damage to equipment and are also hazardous to personnel. Thus, there should be a primary and a backup system with proper time grading between systems, i.e. Tripping time should be maximum for the point farthest from the fault location. Over current (OC) relays are used as backup protection against these faults. The coordination time interval must be maintained among relays during faults. Various algorithms are used to optimize the time of operation of these OC relays. This paper implements Dual Simplex and Genetic Algorithms (GA) on a radial network and identifies the time multiplier setting (TMS) of the relay. This facilitates in achieving suitable OC relay coordination of the network. © 2015 IEEE.

Madhumitha G

Department of Chemistry

School of Advanced Sciences

Vellore Campus

Hema Malini

Electrical

School of Electrical Engineering

Chennai Campus

Gnana Swathika O V

Sharma P

Mewara D

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.

&nbsp;

&nbsp;

VIT University

Optimum Coordination of Overcurrent Relays Using Dual Simplex and Genetic Algorithms

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

A microgrid is a localized grouping of electricity sources and loads i.e. it is a small-scale power grid that normally operates connected to the centralized grid but can also disconnect and function autonomously. This papers proposes a LabVIEW based Central Protection Center (CPC) that remotely monitors a grid-connected microgrid using a wireless medium. The microgrid is divided into zones for ease of monitoring. The CPC is capable of continuously capturing the current status of the grid in a zonalised manner. If a fault is diagnosed by the central protection center, then it issues appropriate overcurrent relay coordination to the microgrid network. © 2018 IEEE.

2018 Second International Conference on Electronics, Communication and Aerospace Technology (ICECA)

Wi-Fi Based Central Protection Center for Microgrids

Microgrids comprise low voltage distribution systems with distributed energy resources (DER) and controllable loads which can operate connected to the medium voltage grid or islanded in a controlled and coordinated way [1]. Microgrids are controlled units which report their current state to a central control unit called Central Protection Centre (CPC) thus increasing reliability of the system. This feature also increases the controllability, security and ease of power flow. By connecting load centers to a microgrid, uninterrupted power is supplied to households and industries with reduction in energy theft, interruptions and loss in energy. However the challenge lies in automating the entire process of monitoring, protection and control of all the grid parameters. This becomes more critical with inclusion of DERs as they are inconsistent sources of energy. In this paper the concepts of Internet of Things(IoT) is used to solve the issues of microgrid reconfiguration occurring due to faults, changing energy usage patterns and inclusion and removal of DERs. By using suitable processor based technology it is aimed to automate the process, reduce the cost and size of establishment and reduce the overall cost of energy to the supplier. © 2018 IEEE.

IoT Based Microgrid Automation for Optimizing Energy Usage and Controllability

Advances in Intelligent Systems and Computing Intelligent Engineering Informatics

Optimal Coordination of Overcurrent Relays Using Simulated Annealing and Brute Force Algorithms

2017 International Conference on Computing Methodologies and Communication (ICCMC)

Optimum coordination of overcurrent relays in distribution systems using differential evolution and dual simplex methods

Power Systems are prone to damage due to overcurrent as a result of faults like ground faults, line faults, short circuit etc. In order to curb the damage caused by these faults suitable protects systems must be placed. The protection system usually consists of a primary system and a backup system with proper coordination between the two systems (i.e. their tripping time) in order to ensure proper clearance of faults in minimum time. In this paper, the optimization of overcurrent relays which are primarily used as backup systems against these faults are analyzed. The application of swarm intelligence algorithms: Ant Colony Optimization and Firefly Algorithm in radial system are done in order to obtain the time multiplier settings of the relays. This enables us to achieve proper coordination between the overcurrent relays in the network. © 2017 IEEE.

Optimum coordination of using overcurrent relay using firefly and ant colony optimization algorithm

International Journal of Electrical Power & Energy Systems

Optimal overcurrent relay coordination in power distribution system using a new approach

2011 International Conference on Energy, Automation and Signal

Optimal overcurrent relay coordination in distribution system

Practical Genetic Algorithms

Journal	Data powered by Typeset2015 International Conference on Computational Intelligence and Communication Networks (CICN)
Publisher	Data powered by TypesetIEEE
Open Access	0