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Historical data based energy management in a micro-grid with a hybrid energy storage system

Historical data based energy management in a micro-grid with a hybrid energy storage system Historical data based energy management in a micro-grid with a hybrid energy storage system   Abstract — In a micro-grid, due to potential reverse power profiles between the Renewable Energy Source (RES) and the loads, energy storage devices are employed to achieve high self consumption of RES and to minimize power surplus flowing back into the main grid. This paper proposes a variable charging/discharging threshold method to manage energy storage system.…

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Robust Finite-Time Control for Autonomous Operation of an Inverter-Based Microgrid

Robust Finite-Time Control for Autonomous Operation of an Inverter-Based Microgrid Robust Finite-Time Control for Autonomous Operation of an Inverter-Based Microgrid   Abstract— Recently, more and more small scale renewable generation sources based distributed generators are integrated to the existing power network through power electronic based converters. Microgrid has been proposed as a solution to meet the challenges posed by highly intermittent renewable generations. To address the fast response and complex operating conditions of various inverters in an autonomous microgrid, this paper proposes a…

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Comprehensive Control for Microgrid Autonomous Operation With Demand Response

Comprehensive Control for Microgrid Autonomous Operation With Demand Response Comprehensive Control for Microgrid Autonomous Operation With Demand Response Abstract—   Several situations in a microgrid (MG) cause unbalances leading to voltage and frequency variations. Conventionally MG power balance is ensured by storage battery units along with unscheduled load shedding. This paper presents control and management strategies to coordinate MG resources including generation, smart electric vehicles, and loads for frequency and voltage regulation to achieve optimal autonomous operation. MG control is designed in two…

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Study of Improved Load Sharing Methodologies for Distributed Generation Units Connected in a Microgrid

Study of Improved Load Sharing Methodologies for Distributed Generation Units Connected in a Microgrid Study of Improved Load Sharing Methodologies for Distributed Generation Units Connected in a Microgrid   Abstract— In this paper, an improved load sharing strategy is proposed for distributed generation units (DGs) connected in a microgrid. Conventional frequency and voltage droop control result in unacceptable active and reactive power sharing. The proposed method formulates a suitable algorithm for load sharing in the islanded microgrid. The feeder power loss and the…

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Irradiance-adaptive PV Module Integrated Converter for High Efficiency and Power Quality in Standalone and DC Microgrid Applications

Irradiance-adaptive PV Module Integrated Converter for High Efficiency and Power Quality in Standalone and DC Microgrid Applications Irradiance-adaptive PV Module Integrated Converter for High Efficiency and Power Quality in Standalone and DC Microgrid Applications Abstract— The strive for efficient and cost-effective photovoltaic systems motivated the power electronic design developed here. The work resulted in a DC-DC converter for module integration and distributed maximum power point tracking (MPPT) with a novel adaptive control scheme. The latter is essential for the combined features of high…

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Distributed Adaptive Droop Control for Optimal Power Dispatch in DC-Microgrid

Distributed Adaptive Droop Control for Optimal Power Dispatch in DC-Microgrid Distributed Adaptive Droop Control for Optimal Power Dispatch in DC-Microgrid Abstract— In this paper, a coordinated adaptive droop control is addressed for DC-microgrid to optimize its power distribution. The optimal solution for economical dispatch problem (EDP) of the microgrid is found through a fully distributed hierarchical control. The consensus based economical regulator calculating the optimal solution for the generator is fully distributed. Thus, it eliminates the requirement of centralized coordinator. The droop controller…

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Stochastic security and risk-constrained scheduling for an autonomous microgrid with demand response and renewable energy resources

Stochastic security and risk-constrained scheduling for an autonomous microgrid with demand response and renewable energy resources Stochastic security and risk-constrained scheduling for an autonomous microgrid with demand response and renewable energy resources Abstract: Increasing penetration of intermittent renewable energy sources and the development of advanced information give rise to questions on how responsive loads can be managed to optimise the use of resources and assets. In this context, demand response as a way for modifying the consumption pattern of customers can be effectively…

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Optimal Energy Management and Marginal Cost Electricity Pricing in Microgrid Network

Optimal Energy Management and Marginal Cost Electricity Pricing in Microgrid Network Optimal Energy Management and Marginal Cost Electricity Pricing in Microgrid Network   Abstract— The evolution of smart microgrid and its demandresponse characteristics not only will change the paradigms of the century-old electric grid but also will shape the electricity market. In this new market scenario, once always energy consumers, now may act as sellers due to the excess of energy generated from newly deployed renewable energy generators. In this paper, we propose…

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An Innovative Hybrid Wind-Solar and Battery-Supercapacitor Microgrid System—Development and Optimization

An Innovative Hybrid Wind-Solar and Battery-Supercapacitor Microgrid System—Development and Optimization An Innovative Hybrid Wind-Solar and Battery-Supercapacitor Microgrid System—Development and Optimization   Abstract— This paper presents a methodology for the joint capacity optimization of renewable energy (RE) sources, i.e, wind and solar, and state-of-the-art hybrid energy storage system (HESS) comprising of battery energy storage (BES) and super capacitor (SC) storage technology, employed in a grid-connected microgrid (MG). The problem involves multiple fields, i.e., RE, battery technology, SC technology, and control theory, and requires an…

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Bregman storage functions for microgrid control

Bregman storage functions for microgrid control Bregman storage functions for microgrid control   Abstract— In this paper we contribute a theoretical framework that sheds a new light on the problem of microgrid analysis and control. The starting point is an energy function comprising the “kinetic” energy associated with the elements that emulate the rotating machinery and terms taking into account the reactive power stored in the lines and dissipated on shunt elements. We then shape this energy function with the addition of an…

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