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This paper is an intent to quantify and analyze the impact of distributed generation(DG) in Tamil Nadu, India to examine what the benefits of decentralized generation would be for meeting rural loads. In this paper, the total loss of a practical distribution system is calculated with and without distributed generation and an index, quantifying the total line loss reduction and energy conservation...
Poland, the 34th most populous country in the world and 6th among members of the European Union, generated 142.9 TWh net electricity, of which households consumed more than 30% in 2010. This work provides an insight into the potential of smart buildings in Poland. The essential contribution of this work is the consideration of the experiences of the national electrical system operator, existing building...
Distributed Generation is the generation of electricity from many small energy sources and is located closer to the user, or customer. The purpose of using distributed generation is to improve voltage profile, voltage stability and to minimize power losses. This paper presents an overview of research and development work carried out in the field of Distributed Generation. This paper also discusses...
High penetration of distributed energy resources raises operational and market challenges. Existing incentives and tariff support can not be sustained with penetration growth and competitive market mechanisms are required at the micorgrid level. We propose a market mechanism to bring competitiveness at the microgrid level. In this dynamic matching mechanism, individual generators and load units meet...
Photovoltaic powered distributed generation (PV-DG) is increasingly being embedded into electricity distribution networks worldwide with fast penetration rates. Among various elements which can limit a substantial dissemination of the PV-DG, one is the paucity of reliable forecasting methods for estimating production and exchange profiles of non-programmable sources with particular reference to solar...
This paper proposes a methodology for quantifying and allocating the economic benefits of implementing Photovoltaic Panels (PV) and Energy Storage Systems (ESS) in diesel powered isolated Remote Communities (RCs). The study, a cost-benefit analysis, proposes a set of benefits, incurred costs and stakeholders affected by the implementation from a long-term planning perspective. As a demonstration,...
The idea of reshaping existing centralized electricity networks to decentralized small scale local power networks namely micro-grids, operating whether autonomous or interconnected to main distribution grid, became an important discussion. Islanding of a generator inside the micro-grid can cause problems in operation and management of the network; therefore proper islanding detection is crucial. This...
In recent decades, smart grid have become increasingly attractive to both energy producers and consumers. Amongst the main challenges for the successful realization of smart grid includes the integration of renewable energy resources, real time demand response and management of intermittent energy resources. Apart from smart grid, the development of micro-grids should take into consideration of issues...
In the year 2007, South Africa experienced high demands of electricity power than that could have been generated. Due to greater demand than the generation, the country experienced planned and unplanned load shedding. Hence the commercial operations, industrialization country's economy and mostly people's life styles were highly affected. The unplanned load growth, indiscriminate integration of distributed...
This paper presents a comparison study of two major distributed generation islanding detection methods including rate of change of frequency (ROCOF) and over/under frequency (OUF) techniques which could be used for Provincial Electricity Authority (PEA) distribution systems. The analysis is based on the detection time in different scenarios and false operations. Two practical distribution systems...
The introduction of distributed generation (DG) onto distribution networks has a significant effect on losses and voltage profile. This effect cannot be characterized as detrimental or beneficial but is dependent on the allocation of DG on each distribution network section. Here the impact of DG on losses has been modeled, facilitating a unique approach to the allocation of DG. This approach has been...
Use of modern energy, like electricity, is a key factor to economic development, poverty reduction, improved health and cleaner environment for a society. Moreover, if the electricity is generated with Renewable Energy (RE) resources the benefit will be profound. Unlike the developed countries though, developing countries have little access to electricity. The African continent for example covers...
Competitive market driven large interconnected power systems are now being operated near maximum capacity due to environmental and operational pressure. In this context, we have to consider both economy and security of the stressed power system network. Transmission congestion caused due to the stressed operation of the power systems, affects the Locational Marginal Pricing (LMP). Presently, a large...
This paper presents analysis of electricity generation using stand-alone hybrid renewable energy resources for typical household in remote area situated in the eastern Indonesia. In the previous study, the optimum sizing problem is solved with PV/battery/wind-hybrid system without any generator addition. In this study, gasoline generator is added as a non-renewable resource option for 3 hybrid system...
At present a large number of renewable energy generation plants is starting to be connected all around the world and, in particular, Italy is experiencing one of the fastest large-scale diffusion of distributed energy resources (DERs) and this could has a considerable impact on electricity infrastructure functioning by bringing some changes to the traditional model of generation and supply as well...
Due to the adverse impacts of the consumption of fossil fuels on our environment, the quest for a more sustainable energy supply is increasingly intensifying worldwide. Many renewable energy sources, such as wind, solar and tidal power generate electricity. Therefore, the development towards a sustainable energy supply leads to increasing electrification. The decreasing degree of controllability of...
The selection of generation projects is based on the amount of energy consumption in the expected growth of demand in the amount of operating reserves and needs to regulate the system. A viable solution to meet energy needs and expansion of systems is the Distributed Generation - DG. Single source of DG does not guarantee economic generation, reliability, flexibility and controllability in energy...
Distributed generation (DG) systems have many impacts on the power network. Previously, the power was supplied from the centralized generating unit and then dispatched to the loads, but today DG systems provide electrical power at the customers' sites and slightly decline the losses due to either transmission or distribution of the electricity. Furthermore, DG systems are able to reduce the emission...
The growing need for competition in the utility and energy markets and South African government's policy on the inclusion of Distributed Generation otherwise known as Embedded generation (EG)s in the future generation mix in South Africa will potentially mean that the numbers of generators being connected within the utility distribution networks will increase significantly. In March, 2009, the National...
As penetration level of distributed generation (DG) is increasing in distribution networks; new players are introduced into the markets which significantly increase the uncertainties in the system. The concept of Virtual Power Plants (VPPs) is a practical approach to deal with increased uncertainty and complication in future power systems. In such situation, a distribution network is no more passive...
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