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Micro-grid technology can integrate the advantages of distributed generation power system, to provide users with quality and reliable electricity. This paper designs the photovoltaic system which is short for PV based on the energy storage structure which not only analyses the energy flow direction of the charging and discharging circuit, but also designs the control strategy of charging and discharging...
This paper presents a scalable Multi-Agent System (MAS) for optimal operation of an islanded microgrid. Each autonomous element in the microgrid is represented as an intelligent agent in MAS. The MAS is developed such that it maximizes the power production of local distributed generators and minimizes the operational cost of microgrid subject to system constraints and units constraints. Agents in...
Microgrids are low voltage distribution networks comprising various distributed generators, storage devices and controllable loads. Microgrid can be operated in interconnected mode or islanded mode. Optimal generation scheduling is one of the microgrid energy management system's function for optimizing the microgrid operation. This paper presents a Multi-Agent System (MAS) for generation scheduling...
Innovations in renewable energy technology are becoming important as worldwide needs for affordable, reliable & clean energy grow worldwide. Research is needed for new generation technologies and effective integration of these into electric grid. Renewable sources are abundant particularly in India and we can harness these resources for producing electricity. Globally speaking, wind technology...
Kyushu Electric Power Co. has been carrying out research into a microgrid systems for small isolated islands, which is characterized by combining internal combustion power, renewable energy, and batteries, to investigate the effects on CO2 emission reduction and fuel cost reduction. Through numerical simulation and basic performance testing, it has been confirmed that the issues to resolve for stable...
At present new materials and development approaches in battery systems are aimed at replacing Lead Acid batteries, not only their common market-available forms but also, in some cases, as devices for large energy storage systems due to their better overall performance. Among these new battery types, sodium-sulphur batteries are a new practical and economical competitive solution to store large amounts...
Vehicle-to-Grid (V2G) systems are an emerging concept of utilizing the battery storage of electric vehicles (EVs) for providing power system regulation services. This technology could be used to balance the variable electricity generated from various renewable energy sources. This article considers a model of an aggregated electric vehicle based battery storage to support an isolated power system...
Power Systems (PS), have been affected by substantial penetration of Distributed Generation (DG) and the operation in competitive environments. The future PS will have to deal with large-scale integration of DG and other distributed energy resources (DER), such as storage means, and provide to market agents the means to ensure a flexible and secure operation. Virtual power players (VPP) can aggregate...
This paper presents a survey over the main topologies of the battery energy storage systems (BESS) and they role in the operation of microgrids (MG), in the picture of the future smart grids development. The frequency control issue in autonomous MG in comparison with a classical power system is investigated and the BESS purpose on this line is enlighten. The BESS's secondary functions like voltage...
In the energy management of a small power system, the scheduling of the generation units is a crucial problem for which adequate methodologies can maximize the performance of the energy supply. This paper proposes an innovative methodology for distributed energy resources management. The optimal operation of distributed generation, demand response and storage resources is formulated as a mixed-integer...
This paper describes a method to enhance the load frequency control in a power system with distributed generations (DG). In this paper, a power storage system is used with photovoltaic generation and wind power generation. The microgrid system at Aichi Institute of Technology in Japan is used as a simulation model. For each simulation, which was carried out by using a power transmission simulator,...
Vodafone, China Mobile and Huawei have started a joint green technology programme to advance renewable energy application in wireless networks to reduce diesel consumption and to contribute substantially to CO2 emission reduction. Three experimental BTS sites, an NFB PV site, a macro BTS PV-diesel site and a distributed BTS PV-wind site, were set up to verify and optimize system design and implementation...
Expanding the size and demand of the electrical network, make the use of distributed generation inevitable especially, when the produced power can be expected as a green power. Furthermore, this growth in size brings up the importance of volume and weight of instruments, used in. Power electronic transformer is an attempt to reduce the weight and occupied space of the electrical devices. In this paper,...
In this paper, familiar means of energy storage are compared with respect to both performance and cost, on the basis of which some general rules are discussed on how to select proper energy storage means. Based on integrative analysis of capacity-fluctuation's impact on system and customers, some technical requirements of energy storage capacity configuration are determined. Proper capacity proportion...
In this paper, the environmental impact evaluation was examined on an independently operated microgrid. For the evaluation of environmental impact, we measured the amount of CO2 exhausted from the micro grid when the installation capacity of photovoltaic and of battery was changed. The amount of CO2 emission was compared by equipment with different amount of the introduction. The capacity of battery...
A microgrid power system is required to be controlled by electric power energy flowing through the interconnected power line that connects the microgrid and a large power system. Load dispatch for power sources in the microgrid is required, but large scale SCADA is not anticipated. This paper proposes an application of a mobile agent technology for the electric power output control. The reason is...
Microgrids are systems that integrate distributed renewable energy sources, controllable loads, and energy storage in a more economic and reliable fashion. In this paper we model the load and generation of two microgrids with wind farms to implement optimal power flow (OPF) using particle swarm optimization (PSO). The objectives are to achieve optimal dispatch of controllable loads and generators...
This paper aims at seeking reasonable power dispatching scheme for distributed wind-solar power generation hybrid system, to satisfy some basic requirements, such as dispersed electric power demand, electric power quality and reducing generation cost and so on. Firstly we represented some elements of the main parts in the hybrid system; and then made basic dispatching strategies according to different...
Microgrids may be a prospective power system that addresses the renewable energy technologies (RET) accompanying necessary growing deployment of distributed energy resources (DER), especially small-scale combined heat and power (CHP) and small-scale renewable energy sources (RES). This article introduces the RET expected to be applied in the microgrids system depending on the RES. The RET include:...
An simulating micro grid with household DG experiment system is built with essential parts based on their steady-states mathematical model in MATLAB/simulink. Simulation results show that, the proposed simulation model and corresponding modular are reasonable, and it can be used to build and analyze micro grid with household DG on the user's demand, which is also a valid tools to draw control strategies...
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