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This paper presents a design of hybrid energy system for three different locations around the world. A residential load supporting 80 households were taken into the study and the optimal cost-effective solution was determined using Homer Pro software. The locations were selected based on the annual solar radiation and wind speed data. Bali, Phoenix and Wellington were selected based on the data from...
In this work, a hybrid system has been simulated and optimized, this system is composed with three generators, two on renewable energy (solar and wind power) and a diesel generator. This central distributes energy to a small village in southwest of Algeria named “Timiaouine”, this central has been sized using mathematic parameter and repartition of consumption for 24 hours in both seasons; winter...
Intermittency of renewable resources represents a major impediment that restricts their integration in microgrids. This paper presents an approach that can contribute to solve this issue by the prediction of near-term future renewable power production, mainly wind power and photovoltaic power, based on weather forecasts. After knowing the future renewable power production, the electric grid manager...
Motivated by the new feed-in tariffs for electrical power projects generated from renewable energy resources, the present study is investigating the potential of on-grid hybrid solar/wind/Biomass power generation in Egypt. The arrangement is modeled and examined through the environmental and economic prospects. The optimization, sizing and economic assessment of the introduced systems were accomplished...
We develop a two-part modeling framework to schedule bids for merchant variable renewable energy (VRE) generators participating in the day-ahead wholesale electricity market. The first part is an optimization model that maximizes revenue by optimally selling power into the marketplace. The second is a non-cooperative game-theory model in which the Nash equilibrium is the revenue-maximizing bidding...
With spreading of renewable energy in energy mix of national grids, the issue of high capacity and efficient energy storage is becoming very critical. A comprehensive model of South African power grid developed at the University of Pretoria is presented in this work. The model contains all notable power generators in the country. Mixed integer non-linear optimisation techniques are employed for unit...
This study of the bidding strategies used by electricity producers in the day-ahead and intraday markets in Spain-Portugal shows that they clearly do respect the merit order. They offer their production at a range of prices which vary from one hour of the day to another, and from one day of the week to another. We show that on average over a quarter producers received about the same revenue per MWh...
Hydrogen production with wind power generators is a very effective means to solve the problem of future energy supply. There is a method for producing hydrogen by using stand-alone wind power generators. However, there has been few report so far about experimental study of hydrogen production with stand-alone wind power generators. Therefore, this paper presents results of experimental analysis of...
In the case of ensuring the reliability of power supply, in order to improve the economy of the distributed generation systems, it should be based on different resource conditions to optimize the design of the system. This paper constructs the distributed power generation system structure of multiple distributed power supply. The main factors affecting the optimal design are discussed qualitatively...
Renewable energy generation (Wind, solar …) is rising rapidly around the world, for the most part to reduce the negative environmental impacts (effect of carbon emissions), attributable to consumption of fossil fuels. Energy storage is being today feasible with some kind of variable renewable electricity sources such as the Pumped Hydraulic Storage (PHS). This paper focuses on the applicability of...
One of the two hydro turbine-generator sets in small hydropower plant has become inoperable due to generator stator winding failure. Considering the age of the plant, together with generator repairs, more comprehensive plant refurbishment options have been analysed. The optimal solution is chosen, one that provides improved reliability, increased electricity production with best financial and economic...
By taking into account the fluctuations of the renewable energy based power production, this paper describes a 24-hour ahead energy management for a micro grid. Based on the prediction of the energy available from the PV generator, storage availability, the microturbines emissions characteristics and the load prediction, a central energy management system calculates a day-ahead plan of the power references...
Many Korean companies are eager to construct wind farms in Jeju Island, thanks to the Government's policy of supporting renewable energy. Total capacity of planned wind farm is 250MW and government's target is 500MW. At the same time local government of Jeju Island has plans to build new 300MW LNG power plant or 400MW HVDC#2 with mainland. However local power demand of Jeju Island will not be increased...
With the increased use of wind energy several Transmission System Operators (TSO) have increasing difficulties for congestion forecasting due to the unpredictable nature of the energy source. To maintain the state of the system within acceptable and secure operating conditions, the TSOs require the curtailment of the production of generators to avoid local congestion on the power grid. These actions...
Innovative integration of new technologies can benefit our society greatly. This paper presents a system which exploits the synergy of wind and hydro (windro) generation in an appropriate environment. The system presented is a pumped storage system integrated into a skyscraper to store wind power and deliver it at times of peak demand. A discussion is provided of why this is an appropriate environment...
The fast growth of the share of distributed and renewable energy generation is a common European target. It contributes to the protection of energy resources and environment as well as to the reduction of the dependency of primary energy imports. The integration of RES into the electric energy system has become an important challenge for the utilization and control of electric power systems, because...
The value of intermittent wind generation is significantly affected by their penetration and concentration, and is further affected by their location within a network. This is because the location and penetration level of wind generation will result in significant impact on power flow distribution across the network. When increasing the penetration and concentration of wind generation in a power system,...
Electric power generation is the second-largest category of greenhouse gas emissions (GHG) in California, next to transportation. Californiapsilas legislature and energy regulators have adopted aggressive controls on the GHG emissions from electricity production, as well as aggressive targets for renewable energy due to heavy reliance on natural gas as a fuel for electric generation. These regulations...
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