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This paper further describes our work presented in Industry Application Society 2016 Conference, with more details related to the control and operation of the microgrid. The DC microgrid facility was custom designed and implemented at CCNY with minimal off-the-shelf components to enable flexibility and reconfiguration capability. The design steps, requirements, and experimental results of the developed...
This paper presents a novel compact AC/AC converter suitable for hybrid microgrids. The proposed topology is used to interconnect two three-phase renewable energy resources and one three-phase load to the grid, side by side with the appropriate generalized pulse width modulation and control method of the microgrid power flow. The proposed topology, generalized pulse width modulation, and the utilized...
The interconnection between DC microgrids has been studied through the modeling and simulation of two DC microgrids and utility network with independent connection to each microgrid. Each microgrid has generation sources, storage source, electrical charges, two points of common coupling (one with the utility network and other with the neighboring microgrid) and a central controller. By performing...
Electrical power demand have grown rapidly over the years which results in power system congestion, depletion of fossil fuels and increased environmental hazards. Further existing power system generations are inadequate for the exponential demand growth. Environmental risks and depleting fossil fuels created a pocket for renewable energy based distributed generations that are cleaner, and renewable...
This paper presents the design, control, energy management, and implementation of the City College of New York (CCNY) direct current (DC) microgrid laboratory testbed. This facility was custom designed and implemented by researchers at CCNY with minimal off-the-shelf components to enable significant flexibility and reconfiguration capability. The microgrid consists of renewable energy resources, energy...
Microgrid increases the reliability and quality of supply of industrial and commercial buildings. The operation in islanding mode is a challenging issue due to the limited energy available and the lack of a main grid for synchronizing purposes. This paper presents both the design of a small-scale industrial microgrid and a hierarchical control strategy for islanding mode operation. The control scheme...
The penetration of Distributed Generators connected to the electric grid requires today new control strategies in order to participate in local ancillary services. This paper presents a control strategy for a Front-End Converter enhancing not only these new requirements but also the intentional islanding for a portion of the public medium voltage distribution grid. The simulation of the proposed control...
This paper presents a new control strategy for optimal energy consumption in microgrids based on forecasting and load shedding method. In islanded mode, only local generation resources are usable. In this mode, the availability of resources is very influenced by meteorological factors. In order to achieve a high availability of energy, microgrid has to satisfy high requirements on intelligent power...
Distributed generation (DG) is playing an increasingly important role in modern power systems as the carbon emission concern and electricity demand are increasing. It facilitates the development of small scaled distributed grid networks and their technologies. Microgrid is an emerging technique and it comprises a variety of distributed generators, energy storage, loads and power electronic interfaces...
In this paper an optimization algorithm is applied on a microgrid with renewable energy and distributed generation. The intermittent electricity in Lebanon leads to widely use diesel generator groups and to install renewable energy in private places in order to cover the consumption during the power cut. The proposed case study consists of three energy hubs integrating renewable energy, diesel engines,...
In this paper, an agent-based distributed control scheme is presented to control single-phase parallel inverters in solar photovoltaic (PV) systems connected to microgrids. A communication assisted multi-agent framework is developed within microgrids where agents perform their tasks in a distributed manner with an aim of stabilizing load voltage and current under normal and faulted conditions through...
The progressive spreading of Distributed Resources in the Low Voltage section is leading to a new paradigm previously unaddressed, since it is the less controlled section of the entire electric network. The inclusion of Information and Communication Technologies is a key factor towards its proper management. In addition, studies show that the progressive development of microgrids will lead to an improvement...
Microgrids are poised to become a major worldwide development in light of the numerous benefits they offer. However, the control and management of such systems require keen attention, as stability issues in microgrids have proven to be an important topic of research. It is a point of emphasis, that microgrids operating as stand-alone systems are particularly unforgiving in the sense that the combined...
According to studies conducted by the IEA, building energy consumption accounts for approximately 40% of the total energy consumption worldwide. With fossil fuel sources being the primary means of electricity generation in many countries, states and provinces worldwide. This has brought about the need for designing buildings which consume less power as well as the integration of renewable energy sources...
A novel microgrid control is proposed in the paper. Independent control of active and reactive power for each unit connected to the common microgrid bus is realized in addition to the power sharing in the designed ratio among the units. The concepts of voltage droop and frequency droop applied widely are incorporated here as well. The price paid for the independent control is the reference frame transformation...
A Microgrid Emulator is developed for use with an in-house microgrid testbed. The power generated is real power, the solar panels are replaced with a programmable power supply which follows the voltage current curves of any real solar panel that has been chosen to emulate. The inverter is a real in-house developed inverter. The development of a solar power emulator on a microgrid testbed permits researchers...
An implementation of a multi-agent system (MAS) for a rural Indian microgrid (MG) using Arduino has been explained in this paper. The focus is on the DG agents — the distributed energy resources (DERs), load, storage and the grid agents — and the Mu agent which acts as the communication channel between the DG agents to the higher level agents such as the control agent. The design philosophy incorporates...
Energy is one of the most critical economic, environmental, and developmental issues in the world. Developing countries in particular need access to a reliable, affordable, clean, and efficient energy service to elevate standards of living and to reduce poverty. As the largest and most populous continent after Asia, Africa has only 2% of the world's industrial capacity. Its per capita income is only...
Reliance on costly and polluting diesel generators is a major difficulty common to almost all the remote off-grid communities. However, there are oftentimes opportunities to replace at least a part of it with clean renewable energy. This can be achieved by incorporating appropriate energy storage technologies for shifting the energy as well as smart control and monitoring systems. Bella Coola in British...
Large scale penetration of Renewable Energy-Based Generators (REBG) and Distributed Energy Resources (DER) requires an evolution of the classical dispatching of conventional generators in power systems. A step towards the Smart Grid is to integrate locally REBG, conventional generators and loads in clusters called microgrids. This paper presents a microgrid energy management optimization in the presence...
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