Department of Electrical and Electronics Engineering
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Item Development of a Novel Strategy with Electrical Vehicles to Mitigate Frequency Aberration in Microgrid(IEEE, 2018) Mathur, Hitesh DattPower system complexity is growing rapidly with changing scenario of load characteristic. Microgrid is a feasible solution to cater to varying load for maintaining power quality parameters especially frequency and voltage. The microgrid, consisting of different types of intermittent sources and loads, is liable to a substantially high frequency aberration. This needs to be mitigated at a faster rate in order to supply quality power supply to consumers. This paper focuses on development of a novel control strategy for quick active power support by electric vehicles (EV) to suppress frequency deviation caused due to fluctuating load. This approach senses the frequency change and communicates with EV aggregator to supply required amount of active power to microgrid. It is simulated on MATLAB/Simulink platform and results obtained are encouraging in terms of critical parameters i.e. settling time and peak over/undershootItem Investigation of Virtual Inertia Topologies Considering Energy Storage Systems and Multi-Resource Virtual Power Plant(IEEE, 2022) Mathur, Hitesh DattDue to the high penetration of renewable energy sources (RES) into the power system, the distributed generators lack the rotating component to emulate inertia leading to frequency fluctuations. In this paper, multi-resource virtual power plant (VPP) with electric vehicle (EV) and data center (DC), with their batteries as energy storage systems (ESS) is considered to compensate for frequency fluctuations. Further case study of irradiance and load fluctuation is considered, which supports the frequency in a grid-connected microgrid with PV and a hydroelectric generator. Frequency support has been evaluated using three different techniques: conventional droop control, the frequency derivative model of the virtual synchronous generator (VSG) method, and the swing equation model of VSG. Comparison has been performed using multi-resource VPP, and it is observed that the VSG technique shows better performance compared to the droop approach while providing frequency support to the considered system.Item Frequency Excursion Mitigation in a Multi-source Islanded Energy System Using Meta-Heuristic Optimization Strategies(IEEE, 2020) Mathur, Hitesh DattDistributed Energy Resources and Electric vehicles are getting more popular in the energy market. They are emerging as promising concepts that can bring a revolution in the field of energy resources and transportation systems. The integration of different renewable energy resources and electric vehicles leads to a comprehensive microgrid (MG). It is a fact that an increase in power demand leads to a drop in power frequency and vice-versa, which adversely affects the power quality of the system. Therefore, the primary idea of this research work is to regulate frequency by controlling the wind power and available EV power. In this paper, a detailed MG model is simulated in MATLAB/Simulink with wind and EV as one of the sources using fractional order PID (FOPID) controller. Further, parameters of FOPID controller is optimized by using Ant Colony Optimization(ACO) and Particle Swarm Optimization (PSO). The frequency responses, wind power, and EV power results are compared for three cases; FOPID without optimization, ACO based FOPID, and PSO based FOPID. The generalized wind model and total energy model (TEM) are used for simulating wind source and EV, respectively. Optimizer based FOPID controller provides a better response for the defined objective function.