Modeling and Operating Strategies of Micro-Grids for Renewable Energy Communities

Author(s):  
Saad Salman Khan

Electric power is flexible, easily controlled and is used in everyone's daily life. Humans can't use other form of energy except electric power because electric power, is one of the main factor to economic development, improved health care, poverty alleviation, and cleaner environment for a society. According to an estimate people more than 1.5 billion worldwide don't have sufficient access to electric power due to inaccessibility, electrification via traditional centralized form of grid was not a feasible option. This led to phenomenal research interest in microgrid based energy supply. Microgrids are low voltage network's that are designed to generate, transmit and distribute electrical energy. These grids accomplish specific goals such as cost reduction, CO2 emission reduction, reliability and diversification of energy sources. Microgrids are an ideal way to integrate renewable energy resources in the local community and allow consumer participation in an energy enterprise. In this chapter, we present a comprehensive overview of recent advancement in Microgrids.

Author(s):  
Saad Salman Khan

Electric power is flexible, easily controlled and is used in everyone's daily life. Humans can't use other form of energy except electric power because electric power, is one of the main factor to economic development, improved health care, poverty alleviation, and cleaner environment for a society. According to an estimate people more than 1.5 billion worldwide don't have sufficient access to electric power due to inaccessibility, electrification via traditional centralized form of grid was not a feasible option. This led to phenomenal research interest in microgrid based energy supply. Microgrids are low voltage network's that are designed to generate, transmit and distribute electrical energy. These grids accomplish specific goals such as cost reduction, CO2 emission reduction, reliability and diversification of energy sources. Microgrids are an ideal way to integrate renewable energy resources in the local community and allow consumer participation in an energy enterprise. In this chapter, we present a comprehensive overview of recent advancement in Microgrids.


Author(s):  
John Vourdoubas

Use of renewable energies in rural areas in the island of Crete, Greece has been investigated. Crete has rich indigenous renewable energy resources which are currently utilized for covering part of its energy requirements. Various renewable energy technologies used for heat and electricity generation in the island have been examined. Solar energy, wind energy, hydro power, biomass, and low enthalpy geothermal energy are already used. The total installed electric power of renewable energies in Crete, located mostly in rural areas, is approximately at 30% of the total electric power installed. They currently generate more than 20% of the island’s annual electricity needs. More renewable energy applications are foreseen in the future in rural areas in Crete as soon as its electric grid will be interconnected with the country’s continental grid. New renewable energy technologies, which are not currently used, could generate in the future heat, cooling, electricity, and vehicle’s fuels in the island. Their use will have positive impacts including the promotion of energy investments, lower use of imported and polluting fossil fuels, de-carbonization of the island’s energy sector as well as creation of new local jobs. It is indicated that the rich renewable energy resources in Crete could provide almost all of its annual energy needs. This will result in Crete’s transformation to a low or zero carbon economy in accordance with EU targets for zero carbon emissions in the next decades complying with the global goal for climate change mitigation.


2022 ◽  
pp. 978-1012
Author(s):  
Navid Bayati ◽  
Amin Hajizadeh ◽  
Mohsen Soltani

This chapter consists of two sections, ‘Modelling of DC Microgrids' and ‘Protection of DC Microgrids'. In the first section, the new developments in DC Microgrids are discussed. Then, the Modelling of renewable energy resources-based DC Microgrid using characteristics and mathematics equations of each component are presented and then they are simulated by MATLAB. Afterward, the fault analysis and fault current behavior of the studied DC Microgrid are investigated. In the second section, a method of protecting the DC Microgrid and locating the fault in different parts of the system is proposed. The proposed method protects DC Microgrid using localized protection devices. And, the effectiveness of the proposed protection method is validated in a DC Microgrid with ring configuration.


2014 ◽  
Vol 918 ◽  
pp. 195-199
Author(s):  
Florin Dragomir ◽  
Otilia Elena Dragomir

Renewable energy source (RES) enables us to diversify our energy supply. Renewable energy sources are getting more and more widespread, mainly due to the fact that they generate energy by keeping the environment clean. This increases our security of supply and improves European competitiveness creating new industries, jobs, economic growth and export opportunities, whilst also reducing our greenhouse gas emissions. This article proposes a simulation of a three-phase low voltage grid with power generation from photovoltaic sources. The proposed system consists of 192 photovoltaic (PV) panels distributed in 32 rows with each 12 PV panels.


2021 ◽  
Vol 15 ◽  
pp. 53-60
Author(s):  
A. Skujevska ◽  
F. Romagnoli ◽  
T. Zoss ◽  
I. Laicane ◽  
D. Blumberga

To achieve national target proposed by the Renewable Energy Source Directive 2009/28/EC, to also accomplish to the CO2 emission reduction targets and to decrease the energy dependency Latvian government is planning to adopt different strategy policies such as feed-in tariffs (FITs) and capital subsidies, in order to incentive investor to use renewable based technology for power production Neverthelss it is crucial to understand in long term perspective the effect and the costs of a specific policy (made even by the combination of different policy tools) applied to the energy sector. Using this model, or an extended version of it, a cost/benefit analysis of a different set of policy scenarios can be carried out. More in specific this study is driving its attention at a situation where it is possible to increase the share of wind power in the energy balance respect the use of natural gas as primary energy for power generation. Four political instruments are chosen in this model: subsidies for construction of new wind-power facilities, information package at all power supply levels for risk reduction and reduction of maintenance costs through a learning effect. The simulation period is from 2010 to 2110. The analysis of policy instruments for development of renewable energy resources in power system illustrates wide potential of system dynamic modelling use for statement of priorities on power diversification. The policy instrument of use of subsidies is a crucial priority. Feed-in tariff is not providing an evident. The reason of that can be related to the key aspect on the way Latvia is organizing its feed-in tariff policy.


2016 ◽  
Vol 31 (4) ◽  
pp. 1447-1455 ◽  
Author(s):  
Dimitar V. Bozalakov ◽  
Tine L. Vandoorn ◽  
Bart Meersman ◽  
Grigoris K. Papagiannis ◽  
Andreas I. Chrysochos ◽  
...  

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