distributed generation Articles
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Protection requirement graph for interconnection of distributed generation on distribution level
In this paper, the protection issues related to distributed generation in distribution networks are considered. Especially, the requirements for the generation unit's protection are discussed. A new graphical approach is used for finding the unambiguous limits of operation. The method is based on using present network planning systems applied widely among network companies. The features and ...
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Optimal integration of distributed generations for profit maximisation and voltage improvement including voltage rise issue
The integration of distributed generation (DG) at the load centres with the grid is a challenging task. This paper deals with the best location of DG as well as a proper share of loads between DG and grid that will yield the most economically efficient results. The optimal allocation of DG in distribution network is very common with an objective to minimise the losses. Loss minimisation is a good ...
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An efficient coupled GA and load flow algorithm for optimal placement and sizing of distributed generators
A genetic algorithm is used in conjunction with an efficient load flow programme to determine the optimal locations and sizing of the predefined DGs within MATLAB software. The best location for the DGs and the sizing of the DGs are determined using the genetic algorithm. The branch electrical loss is considered as the objective function and the system total loss represent the fitness evaluation ...
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Grid Connected Renewable Energy and Distributed Generation Partnerships
The objective of this project is to facilitate the deployment of renewable energy and distributed generation technology in India by identifying barriers to deploying renewable energy and distributed generation, and creating strategies for overcoming these barriers. This project will include a peer assessment, site visits in various APP Partner countries, and workshops. A handbook outlining best ...
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Distributed generation planning in deregulated power market - a bibliographical survey
As a result of deregulation, increased use of dispersed generation requires revisiting in management and operation of distribution network. Selection of optimal network topology incorporated with the optimal use of dispersed generation and retail market including real and reactive power. Minimisation of related costs and satisfying technical and physical constraints is also the key issue to ...
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Multi–objective DG planning for reliability, efficiency, and power quality including voltage rise issue
The reliability of service is very important for sensitive loads. This is only possible when additional generators such as distributed generators are available on strategic load centres to feed these sensitive loads in case of emergency. This paper presents a method to optimally allocate the distributed generations in terms of site and size to satisfy each objectives of multi–objective ...
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Effect of distributed generation modelling on performance of distribution systems
Due to the continuous increase of distributed generation (DG) penetration into distribution systems, load flow analysis always needs improvement to be more flexible, fast and computationally efficient especially when integrating DG with existing distribution systems. The work in this paper is divided into two parts; in the first part a new algorithm is developed to solve the power flow problem ...
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Control and protection of distribution systems with distributed generators
Unquestionably, in the last years, the number of generators connected directly to electric power distribution systems has increased. In addition, the main statistics and signals show that such tendency could become even more intense in the coming years. As a consequence of this policy, many technical factors related to control, protection, operation and analysis of distribution systems should be ...
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Public-Private Sector Partnership on Hydropower in the Partner Countries
This project will support the Task Force in its effort to create an enabling environment for renewable and distributed generation technologies in Partner countries. The project will focus on all Partner countries in order to identify specific barriers impeding hydropower investment in each country. Partner countries have identified more than $200 billion in hydropower investment necessary for ...
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Hardware-in-the-Loop testing platform for distributed generation systems
The rapid validation of the expected performance of distributed generation installations is a critical step in the design process. However, the plethora of distributed generator types and the uniqueness of the load characteristics make the testing quite challenging. This paper introduces an original approach to Hardware-in-the-Loop simulation aimed to evaluate the performance and suitability of ...
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Development of Economic Indices for Renewable Energies and Distributed Generation in the Asia-Pacific Region
Renewable energies are gaining their market share, reflecting on improved economic feasibility; however, most renewable energies, except for wind, hydro, and biomass, are still costly energy options compared to conventional energy sources. In this activity, developments of economic indices will be explored, and can be used as criteria in prioritizing development and deployment of renewable ...
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Cascade failures and distributed generation in power grids
Power grids are nowadays experiencing a transformation due to the introduction of distributed generation based on renewable sources. At difference with classical distributed generation, where local power sources mitigate anomalous user consumption peaks, renewable sources introduce in the grid intrinsically erratic power inputs. By introducing a simple schematic (but realistic) model for power ...
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Opportunities and obstacles: integrating energy efficiency into the transmission and distribution planning process
This paper seeks to highlight issues that warrant further evaluation associated with more precisely incorporating energy efficiency (EE) into a utility's system wide transmission and distribution (T&D) plan from a financial and load forecasting perspective while accounting for system reliability and ratepayer concerns. This paper also analyses how EE is integrated into grid operators' ...
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Renewable energy rural business hubs in China and India
Currently, 56 percent of India’s 700 million rural residents lack adequate and/or reliable power supplies. The United States is leading this project to increase access to cleaner, more affordable energy services in rural India. The initial combined effort will cover up to four pilot sites, with the intention of creating a business model that will result in an ongoing flow of commercial projects. ...
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Optimal location of DG for maintaining distribution system stability: a hybrid technique
To enhance the distribution power quality and maintains the voltage stability is a challenging tasks in the complex distribution network. This can be achieved through the distributed generation (DG). In this paper, a hybrid technique has been proposed which improves the distribution stability by allocating the DG at the optimal place. This technique uses the artificial neural network (ANN) and ...
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Characteristics of modern nonlinear loads and their influence on systems with distributed generation
Nonlinear electronic loads may demonstrate unexpected reactions to variations in power system voltage. This effect of the electrical load may be very significant in distributed generation power systems containing relatively small generators. This paper reviews modern nonlinear electronic load current consumption mechanisms and provides typical current waveforms. Based on extensive measurements ...
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Dispachability improvement of wind generation by the Virtual Power Producers
Today, there is a growing environmental concern about where the energy that we use comes from, bringing the attention on renewable energies. However, the use and trade of the renewable energies in the market seem to be complicated because of the lack of guarantees of generation, mainly in the wind farms. The lack of guarantees is usually addressed by using a reserve generation. The aggregation of ...
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Development and opportunities of distributed generation fuelled by renewable energy sources
The key issue to the widespread of distributed generation (DG) is the ability to safely, reliably and economically interconnect new energy sources with the existing distribution network 'utility grid'. With the rising prices of petroleum fuel sources, a high expected penetration of renewable energy sources (RES) such as wind and solar as part of the emerging DG fuel resource are expected to be ...
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Improvement of power supply to rural customers through grid-interactive distributed generation
The integration of Distributed Generation (DG) into distribution grid systems introduces problems in network operation, control and protection. Key issues associated with DG inclusion are voltage or current control, cost-effective operation, protection coordination and network transients. Better understanding of these issues and finding solutions to these problems are important to power ...
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Supplier strategies and responses to institutional drivers for an emerging energy technology
This paper investigates the role of suppliers of a new energy technology, when the market for that technology continues to be in a state of flux, and is characterised by continued regulatory and institutional developments. This paper first summarises the institutional drivers resulting in the widely divergent diffusion of distributed generation (DG) based on natural gas engines in the Netherlands ...
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