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Electrical energy plays crucial role for the social and economical development of growing countries all over the world. Now a day's one third area of the whole world's population is facing power crisis. The power crisis can be reduced by implementing renewable energy resources in the power system. This paper provides the information of load frequency control for an interconnected hybrid power system...
With the utilization of all-digital Phase locked loops (ADPLLs) in digital communication systems, the use of digitally controlled oscillators (DCO) over voltage controlled oscillators (VCO) has come into existence. In this paper, a new low power DCO structure is proposed with NMOS transistor as switching network. The DCO design is based on the CMOS inverter delay cells and ring topology. Three and...
This research paper describes the automatic generation control of a three thermal interconnected system where each area is provided with a reheat thermal unit. The dynamic stability of this multi-area system is regulated by PD-PID cascaded controller optimized by grey wolf optimization algorithm. Each area is provided by proper generation rate constraints (GRC) in order to consider system nonlinearities...
In this paper an attempt has been made to control the frequency of stand-alone hybrid power system with a simple fuzzy logic control technique which can be used to fulfill the load demand at remote areas. This hybrid system consists photovoltaic (PV) system, diesel engine generator (DEG) and micro hydro power system. The model of fuel cell system is introduced as an energy storing element to improve...
This paper deals with the automatic generation control of a two area interconnected multi source power system using PID controller optimized by Hybrid DEPSO algorithm. Here in each area three types of of sources are being considered namely thermal, hydro and gas power plant. The system performance is analyzed with and without HVDC link. The gains of PID controllers are optimized considering integral...
In this work a recently reported novel meta-heuristic optimizer called grey wolf optimization(GWO) has been applied to optimize the weighty parameters in automatic generation control(AGC) of interconnected three unequal area thermal system, such as gain constant of PID controller (Kpi, KIi, Kdi). A three unequal area interconnected system is studied as a test system under different loading conditions,...
This article describes the automatic generation control of a two area multi-unit interconnected power system with Proportional-Integral-Derivative controller with Filter (PIDF) tuned by teaching learning based optimization (TLBO) algorithm. Each area is equipped with three reheat thermal units with hydraulic amplifiers. The gains of the PIDF controllers are simultaneously optimized by applying a step...
This paper focuses on the load frequency control of two area interconnected reheat thermal systemwith fuzzy-PID controller optimized by gravitational search algorithm(GSA). The gains of the fuzzy-PID controllers are optimized by providing a step load perturbation(SLP) of 1% to area 1in consideration of integral time absolute error(ITAE) as the objective function. The dynamic performances of the system...
This research article discuss about the optimal fuzzy-PID controller tuned by hybrid differential evolution-particle swarm optimization (DEPSO) for automatic generation control of a two area multi-unit interconnected power system. Here the scaling parameters of the suggested controllers are tuned considering a step load perturbation (SLP) of 0.01p.u. in the area1.In each area of the scrutinized system...
In this research paper an optimal 2-Degree freedom of proportional-integral-derivative controller (2-DOF PID) tuned by grey wolf optimization(GWO) is suggested for automatic generation control (AGC) of a multi-source power system comprising of two areas where each area contains a thermal unit, a hydro unit and a gas unit. The active response of the system is observed under two cases: with AC tie-line...
In this brief, we propose local automatic rate adjustment in network-on-chips (NoC) (LAURA-NoC), a NoC with a distributed approach to dynamic voltage and frequency scaling (DVFS). The utilization of the switch buffers is used in a local feedback loop to automatically determine the appropriate clock frequency and voltage that allow the switch to sustain the rate at its input ports, without a global...
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