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Extension of share of renewable energy sources in energy mix is a big challenge for our community to increase energy security and fight against global warming by cutting emissions of GHG. The paper estimate wind turbines capacity that can be integrated in actual electrical system of Moldova without its reconfiguration. The study is based on analysis of power transformer stations operating on 110kV,...
The objective of the dynamic economic dispatch (DED) problem is to find the optimal dispatch of generation units in a given operation horizon to supply a prespecified demand while satisfying a set of constraints. In this paper, an efficient method based on optimality-condition-decomposition technique is proposed to solve the DED problem in real-time environment while considering wind power generation...
Hybrid Renewable Energy System (HRES)s are gradually getting popular for both grid connected and standalone applications as an eco friendly, economical solution. A novel computational tool to model, simulate and optimize grid connected HRESs with V2G is presented in this study. Mathematical model is combined with a simulation algorithm to evaluate energy flows through the system devices and life cycle...
Off grid hybrid renewable energy based power systems for rural electrification has become an attractive solution for areas where grid electricity is not feasible. Hybrid systems use several generation technologies, therefore the selection of proper technologies and optimum sizing of the components has become of great importance in reducing the overall cost and increasing the reliability of the service...
This paper provides Energy-Economic Optimization for a hybrid/ off grid power generation systems using reliable renewable energies suitable for a remote coastal area, Musandam Peninsula situated in most northerly point of Oman. There is a diesel power plant located in Khasab, one of the four wilayyats of Musandam Peninsula which serves the required electricity for the region as it is an off-grid area...
Hybrid renewable energy systems (HRES) have become more and more popular, especially for isolated regions. Various renewable energy resources are utilised to produce energy for different usage. This paper discusses the design of HRES for the Ha'apai island group. Possible renewable resources for electricity generation are investigated and the optimum system configuration at the lowest capital expenditure...
Owning to the predictability of tidal current resources, marine tidal current energy is considered to be a reliable and promising renewable power source for coastal areas or some remote islands. During the last 10 years, various original horizontal axis and vertical axis marine current turbines (MCT) have been developed around the world. Although various projects have been reported in the state-of-the-art...
Wind energy is becoming more common, especially as costs are falling. In Australia's National Electricity Market, the total available generation is managed by the Australian Energy Market Operator (AEMO). One of its tasks is to forecast the availability of generation twenty four months into the future, to ensure that the predicted customer load requirements are met. A challenge, however, is to accurately...
From the last few decades the world has become more anxious about severe climate change. So the interest on clean energy is increasing tremendously. In Bangladesh power crisis is a regular and acute problem. There are many isolated areas and islands where no electricity have been reached yet. To abate the severe energy problem wind and solar energy has good prospects. Bangladesh is situated between...
Electricity is the base of development of a country and the need of electricity is increasing every moment. Developing countries like Bangladesh are facing severe energy crisis. Most of the power generation in Bangladesh is based on natural gas and fossil fuel which makes it hard to meet the increasing demand. As a tropical country, Bangladesh is blessed with renewable energy resources all over the...
While Australia's current electricity generation is primarily based on its vast coal and gas fossil fuel reserves, it is also rich in solar and wind renewable energy resources. If these energy sources can be used to replace fossil fuel to generate electricity, Australia's contribution to worldwide greenhouse gas emissions would be substantially reduced. However, a primarily renewable electrical generation...
In recent years, emphasis has been given on Renewable Energy based Microgrid (μGrid) systems because of their few advantages over Micro-generation (μGen) systems in terms of power quality, stability, reliability, economics etc. But the commercial installation of μGrid system is not yet progressing significantly. This paper presents the techno-economic aspects of μGen and μGrid system towards the sustainability...
A high-level supervisory controller is developed for a Compressed Air Energy Storage (CAES) system integrated with a wind turbine. Complementary to the low-level controllers in our previous works to track generator power and pressure, this controller coordinates different subsystems to optimize the system performance. The control strategy is obtained by solving an optimal storage/regeneration problem...
In the second decade of 21st century there are still too many households without electricity supply in Bosnia and Herzegovina. They are situated in remote, sparsely populated, rural areas where distribution power lines were completely destroyed during the last war. The restoration requires large investments in power grid extension. The decreasing price of renewable energy installations and significant...
The paper illustrates economical assessment of the grid-connected onshore micro wind turbines. The calculation is based on onshore wind speed hourly minimum value of 4 m height in Latvia approximated according to each wind turbine tower height. Economical assessment of the grid-connected solar cells is studied based on the real solar cells output data of Latvia. Results of performed study show that...
Due to the increase in electricity energy consumption and the crisis has been caused by greenhouse gases (GHG), it is now inevitable to use renewable energy. This would mainly be achieved by means of micro-grid that includes aggregated control of some Distributed Generation (DG) units that are grid connected and near the load. Therefore investing for installing new DGs in a micro-grid is needed. This...
With the increasing grid penetration levels of wind power, there is a large need for the energy reserves for grid support during under-frequency conditions. Such energy reserves are created by operating the wind farm at non-optimum/deloaded operating points, as well as through storage of excess energy in Batteries. This paper provides technical and economic analysis of the above strategies and thus...
Hybrid power generation systems are becoming very popular due to the advance in renewable energy technologies. Solar and wind are the most widely used renewable energy sources for generating the electrical power. Their availability usually is shifted in time. Therefore; it may be advantageous to consider both sources as simultaneous option when designing an electricity supply system in an arid sites...
Since 1887 wind has been a reliable source of power in order to address the global challenges of clean energy, climate change and sustainable development. Availability of wind has been always a matter of concern. And economically viable windmills depend most strongly on the quality of wind resource. This wind resource is available from nature. It can be achieved by many other ways. Moving bodies always...
In terms of costs of owning and operation, the wind power differs from conventional thermal power plant as the most of these costs are known in advance. Wind power is considered as capital-intensive technologies. Operation and maintenance costs of wind power are relatively low, when compared to thermal power plants, and of course the input fuel (wind energy) is free, meaning that fluctuating fuel...
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