Sizing impact of distributed generation in distribution networks (original) (raw)
Related papers
Distributed generation (DG) is a method of generating electricity on a small scale from renewable and non-renewable energy sources. DG capacities vary from 1 kW to as large as 100 MW. DG provides an alternative to the traditional electricity sources i.e. oil, gas, coal, water etc. and can also be used to enhance the current electrical system. The technologies for DG are based on reciprocating engines, photovoltaic, fuel cells, combustion gas turbines, micro turbines and wind turbines. The DGs are becoming increasingly popular due to their low emission, low noise levels and high efficiency. Some of the main applications of DG are to provide support and reliability to the power system in a grid-connected mode or isolated mode. With the growing use of DO, it is very important to study its impact on residential distribution network operation. In this study case, the impacts of installing DG in a distribution networks are explored. The work is focused on analyzing the impact of DO instal...
IMPACT OF DISTRIBUTED GENERATION (DG) ON THE DISTRIBUTION SYSTEM NETWORK
Power system quality is a vital issue for electricity companies and consumers of low and medium voltage. In order to reduce the dependency on producing electric energy from fossil fuel, so the distributed renewable energy technologies are becoming increasingly important in the energy supply systems of many countries. Distributed Generator (DG) units can be defined as small units that generate electric power near to the location of customers based on the renewable energy techniques, including wind energy, solar energy, and geothermal energy. Interconnecting DG to an existing distribution system provides various benefits to several entities as for example the owner, utility and the final user. DG provides an enhanced power quality, higher reliability of the distribution system and can peak shaves and fill valleys. However, the integration of DG into existing networks has associated several technical, economic and regulatory questions. This paper investigates the impact of DGs on the power system for enhancing the power system quality by improve the voltage profile and power losses reduction. This paper uses the power system IEEE-12 busses for an example to illustrate the voltage control and decreases the active and reactive power losses by adding the wind generation DGs with the distribution network.
Quantifying the benefits of DG units in distribution network systems
2012
Today, with the rise in global energy consumption and thus increase its production CO2 emission has increased sharply. Research shows that one third of the total CO2 emissions are from power plants. Based on the analysis of Energy Technology Perspectives (ETP2008) unless we find an effective way of decreasing CO2 level there will be a 130% increase in CO2 emission by 2050. There are many solutions suggested for preventing the excessive production of environmental contaminants such as increasing energy efficiency, utilizing distributed generators and renewable energy sources. The present study in addition to further introducing distributed generation systems as an effective method for energy production, aims to identify useful indexes for the assessment of these systems in the network, in terms of voltage, losses and environmental impacts. Then a model will be introduced for the assessment the impacts these systems have and also evaluation of the resulted financial benefits for consumers, energy companies and the general community. In the end results of the placement of photovoltaic generators as a type of distributed generation will be evaluated.
A Review on Distributed Generation Definitions and DG Impacts on Distribution System
Rapidly increasing the power consumption and shortage in generating and transmission capacities have set the trend towards the Distributed Generation (DG) sources. Still there is not a universal definition of DG. This paper discusses the different definitions proposed in the literature. Further DG system to become a major stake holder in the current power scenario it needs to be connected with the existing grid system. This integration will cause some technical, operational and economic impacts on distribution systems. This paper also summarizes these different impacts of DG on distribution system.
Impact of Distributed Generation on Power Distribution Systems
Energy Procedia, 2012
In order to reduce the green house gas emissions all over the world the investment on renewable energy infrastructure is increasing particularly in the distribution network. The penetration of generating sources in the distribution network changes the characteristics of distribution system and will have impact on various technical parameters based on its size and location in the network. This paper modeled the IEEE 34 Node distribution test feeder using the commercial software package DIgSILENT power factory version 14. Solar photovoltaic generators are introduced as Distributed Generators (DGs) at various nodes and the impacts that DG produces on real and reactive power losses, voltage profile, phase imbalance and fault level of distribution system is studied. Simulated results obtained using load flow and short circuit studies are presented and discussed.
Distributed Generation Impact on Distribution Networks: A Review
International Journal of Electronics and Electical Engineering, 2014
The concept of traditional distribution networks with unidirectional power flow is weakening due to large penetration of Distributed Generation (DG). The penetration of DG may impact the operation of a distribution network in both beneficial and detrimental ways. Some of the positive impacts of DG are voltage support, power loss reduction, support of ancillary services and improved reliability, whereas negative ones include protection coordination, dynamic stability and islanding. Therefore, proper planning methods that evaluate the composite impacts, i.e. technical, economical and environmental impacts of DG integration to existing distribution networks are very much essential. This paper presents a critical review of various impacts of DG on power distribution system. For ease of reference and to facilitate better understanding this literature is categorized and discussed under five major headings.
Advancement & Role of DG Technology in Distribution System
2013
As the yearly electric energy demand grows, there is a significant increase in the penetration of distributed generation (DG) to fulfil this increase in demand. Interconnecting DG to an existing distribution system provides various benefits to several entities. DG provides an enhanced power quality, higher reliability of the distribution system and can peak shaves and fill valleys. However, the integration of DG into existing networks has associated several technical, economical and regulatory questions. Distribution system design and planning are key features for determining the best expansion strategies to provide reliable and economic services to the customer. Transfer of electric energy from the source of generation to the customer via the transmission and distribution networks is accompanied by losses. The majority of these losses occur on the distribution system. Placement of distributed generators on the distribution system can lead to a reduction in power losses. Reduction o...