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Smart grids are becoming practical nowadays with their integrated, complex and communicative architecture. The addition of renewable energy sources, control automation, information and communication technologies (ICT), advanced monitoring and protection and smart metering has further increased the complexity. Next generation smart grid will act as an interactive energy web with multi-way communication,...
Micro-grid is defined as a local power network with distributed energy resources (DERs) as micro-power sources scattered throughout the supply area. For reliable and short range transmission of power, micro-power sources are controlled as standalone as well as grid-synchronized power sources. The idea is to design a resilient, efficient and cost effective infrastructure based on advanced communication...
A micro-power system is a cluster of renewable or non-conventional green energy based micro-power sources for short range power supply. These sources can operate in either grid connected or in islanded mode. Micro-sources forming distributed generators resemble converter-inverter type topologies behaving as non-linear loads and sourcing harmonics. The negative effects on power quality caused by the...
The purpose of this paper is to analyze the dynamics of a smart grid in a cyber-physical context. Due to highly complex and interactive nature of smart girds, there is a high risk of instabilities and dynamic variations depending on numerous cyber and physical parameters. An integrated algorithm and simulation involving both cyber and physical variables provide the basis to assure superior performance...
The grid is becoming smart by adding sensing and communication technologies to it with a certain degree of operability and flexibility in topology. The hallmark of modern power systems is a highly integrated, flexible networked and communicative cyber-physical infrastructure having both continuous and discrete dynamics. Issues arising due to the complexity of these systems can be potentially solved...
Integration of Information and Communication (ICT) technologies with power flow management and control to support varying load demand is the hallmark of advanced power networks such as smart grids. Issues arising due to the complexity of these systems can be potentially solved by designing control-communication algorithms based on the information available at any instant of time. This paper presents...
The control strategy for interface inverters or grid-tied inverters to optimize power quality and power sharing in micro-grids with varying dynamics and load demand is a distinct issue. Intuitively, the control problem termed here as Co-Control (CoC) is to regulate and distribute the power flow at grid-micro-grid interface with the help of inverters so as to support system inertia at any time instant...
The installation of Distributed Generation (DG) systems leads to harmonic distortions, unequal power sharing among the host feeders and system voltage and frequency imbalances. These power quality issues arise mostly when main grid interacts with DG systems or when they operate in islanded mode. Henceforth, with a two-step approach as this paper presents, proper frequency and voltage control of DG...
Motor drive control circuitry is now potentially being explored for its immense importance in the design of electric vehicles (EVs), hybrid electric vehicles (HEVs) and plug-in hybrid electric vehicles (PHEVs) with regards to their integration in a smart grid environment. Both AC and DC drives have been studied for vehicular propulsion systems with DC drives being more active in the sense of their...
The core issues with Distributed Generation (DG) systems of today are the insertion of power quality threats, harmonic distortions to the main stream power system and inefficient power sharing leading to power fluctuation problem. This paper effectively sorts out the causes of power fluctuation in islanded mode of operation of micro-grids and presents an effective method for their optimum compensation...
Smart grid defines an innovative research dimension in the area of power systems. Modern power systems are based on highly integrated, flexible networked and communicative cyber-physical infrastructure. This type of approach is extremely helpful in solving various reliability and security issues that arise due to the complexity of these systems. Utilizing different control mechanisms for optimal control...
Transmission efficiency and harmonic loss reduction are among the main challenges of industrial power systems. To cope with these challenges, many control methods for Power Factor Correction (PFC) have actively been proposed. This paper explains the design of a power factor improvement circuit using PIC (Programmable Interface Controller) chip with reduced parts count to achieve desired efficiency...
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