National Institute of Technology, Meghalaya

About: National Institute of Technology, Meghalaya is a education organization based out in Shillong, India. It is known for research contribution in the topics: Control theory & Electric power system. The organization has 503 authors who have published 1062 publications receiving 6818 citations. The organization is also known as: NIT Meghalaya & NITM.

Inter network synchronisation of complex dynamical networks by using smooth proportional integral SMC technique

Abstract: This paper puts forward the inter network synchronisation of complex dynamical networks (CDNs) using drive-response philosophy. The inter networks consist of a drive network (each node represents a hyperchaotic system) and a response network (consists of chaotic system at each node). Synchronisation is achieved using a novel proportional integral (PI) based sliding mode control (SMC) scheme and inter network synchronisation criterion is derived. Unlike the conventional SMC technique, the proposed proportional integral-sliding mode control (PI-SMC) technique does not result decoupled error dynamics. A smooth switching surface is designed to eliminate the chattering effect. The different network configurations: small-world and scale-free networks, are simulated and the simulation results show that the proposed synchronisation scheme is effective for the inter network synchronisation between two or more CDNs. The effect of relevant parameters on the synchronisation process in the Watts-Strogatz (WS) small-world and Barabasi-Albert (BA) scale-free networks are analysed. Finally, the proposed PI-SMC technique is compared with standard SMC technique to justify the advantages over the standard SMC technique.

Characterizations of woven frames

Abstract: In a separable Hilbert space $\mathcal H$, two frames $\{f_i\}_{i \in I}$ and $\{g_i\}_{i \in I}$ are said to be woven if there are constants $0

Optimal placement of protective devices in a distributed power system

Abstract: Distribution networks are designed for reliability. In all physical systems, reliability is dependent on the system configuration that is on the arrangement and connection of various components that make up the system design. In a distributed generation based power system, island operation of micro-grid is made possible by the protective devices present in the system. Hence their optimal location will ensure that maximum number of customers are supplied with energy and thus improve reliability. Increase in the number of protective devices will ensure high reliability of power supply but this is limited by cost considerations. In this paper, the optimal number and location of protective devices is obtained by using simulated annealing algorithm to meet the reliability and economic requirements of a distribution test system. The system reliability indices SAIDI (System Average Interruption Duration Index), System ECOST and System EENS (Expected Energy Not Supplied) are strategically considered to obtain the solution. The simulations are carried out in MATLAB R2014a.