Wind Energy Monitoring Articles
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Norway seeks major role in floating wind supply chain
Norway is hosting first-of-a-kind floating wind projects and opening up new sea areas for technology development, aiming to turn oil and gas know-how into renewable trade exports. Two recent announcements by Norway's government highlight the momentum gathering behind Norwegian floating wind development. In August, Norwegian state fund Enova agreed to fund NOK2.3 billion ($252 million) ...
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Wind Energy Production Estimates: Moving Beyond Time Averages
No need to be a statistician to see that averages are often useful to compare different things. And yet, they often fall short as a true measure of performance. For instance, we use averages to compare the current weather against the climate normals or to get a sense of how our favorite sport team or player is doing. Team (player) statistics are a concise way of combining the scores from many ...
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Using Lidar for WRA Campaigns: Your Questions Answered (Part I)
In the course of conversations with wind developers new to Lidar technology, a number of questions seem to come up regularly. In this and future blog posts, I will attempt to answer these questions in some detail to benefit others who might be pondering them as well. Two very practical questions have to do with how WINDCUBE® Lidars might affect overall wind resource assessment (WRA) campaign ...
By NRG Systems
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Official market forecast for South Africa’s Wind Energy Industry released
2015’s official Wind Energy Forecast for the South African market was released today detailing the key market trends in 2015 for wind energy in in the country. Leading experts from Vestas, Siemens, Barclays, and Green Cape discussed key questions facing this year’s wind energy market inside the 8 page report. This January, experts from across the industry were asked five key ...
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Modelling and control of a variable speed wind turbine driving doubly fed induction generator using three–level PWM converter
The aim of this researcher is to develop a complete wind central model driven doubly fed induction generator (DFIG) which feeds an AC power grid. For that, two–pulse width modulated (PWM) voltage converters are connected back to back between the rotor terminals of DFIG and the utility grid via a common DC link, in there, our contribution will appear in the utilisation of three levels voltage ...
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Operation and control of multiple Distributed Generation systems in the microgrid
This paper investigates the operation and control of multiple Distributed Generation (DG) systems interconnected to the utility in the form of microgrid. The developed model of the microgrid consists of microturbine generation system, converter-based DG system with stiff DC source, synchronous-generator-based DG system and wind power system with induction generator. The Simulation model of the ...
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A novel feed-forward and feed-back control of a VSI for variable speed wind-driven PM alternators
This paper brings out an improved control strategy for an inverter employed to integrate a 3-kW wind-driven permanent-magnet synchronous generator (PMSG) to the utility network. The proposed controller features a feed-back control for enhanced current tracking performance and a feed-forward control for power tracking with varying wind-speeds. The harmonic content of the current fed to the grid is ...
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Exergy analysis of a wind turbine
The present paper deals with a developed and improved approach for exergy analysis of the wind. Based on this model, a typical wind turbine model (Bergey Excel-S) is assumed to be installed in two cities in Iran. The results show that, with regard to the annual average wind data, if the wind turbine is installed in Tehran, by varying the cut in, rated and furling speeds from 3.1, 13.8 and 15.6 ...
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Optimal Power Flow under Variable Wind Generation
In this paper Optimal Power Flow (OPF) problem is solved for a power system, which includes wind power as an additional generation input under variable load conditions. The fixed-speed Wind Turbine Generator (WTG) option is considered in this study: simulations have been performed for various sizes of wind farm attached to the IEEE 30-bus systems using the DIgSILENT Power Factory simulation ...
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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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Bidding and regulating strategies in a dual imbalance pricing system: case study for a Dutch wind producer
In this work, offshore wind power forecast and realisation data are combined with price information from the day-ahead market operated by the Amsterdam Power Exchange and from the imbalance market operated by the Dutch System Operator. This allows for computing spot-market revenues and imbalance penalties or gains for a wind power producer. Three different cases are evaluated: a perfect forecast, ...
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On methodology for modelling wind power impact on power systems
There is a continuous discussion going on concerning the integration cost of wind power. The integration cost can, for example, be defined as the extra costs in the rest of the system when wind power is introduced, compared with the situation without wind power. The result of the studies depends on both parameters and the method used. The aim of this paper is to structure the methods in order to ...
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Simulating real-time load management to maximise wind energy supply within a liberalised electricity market ? Irish case study
The realisation of two key energy policy goals pose significant challenges for power systems operation and control, namely electricity market liberalisation and increased penetration of renewable energy. This paper uses a case study analysis to explore solutions to these new challenges. The focus is on simulating real-time load management to maximise wind energy supply to a local authority ...
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A combined electro-mechanical control technique for dynamic voltage regulation of a stand-alone wind turbine generator
This paper introduces a computer-based model and dynamic simulation of a combined electro-mechanical control technique for a stand-alone wind turbine generator system. The presented combined control technique consists of three closed loops for speed regulation, nacelle alignment and dynamic load voltage regulation. Speed regulation is achieved by adjusting the pitch angle of the turbine blades. ...
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Reactive power control of wind-diesel-micro-hydro hybrid power systems using matlab/simulink
This paper presents reactive power control of isolated wind-diesel-micro-hydro hybrid power system for realistic load disturbance using matlab/simulink. The mathematical model of the system based on matlab/simulink is developed. Reactive power control performance is compared using three different types of Static VAR Compensators (SVC). Transient responses for step plus normally distributed or ...
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A reduced switch count UPF power conditioner for grid connected variable speed wind energy conversion system employing PM generators: a simulation study
In this paper, modelling and simulation of a grid connected variable speed wind energy conversion system (VSWECS) with reduced switch count power converter is presented. The system consists of a permanent magnet synchronous generator (PMSG), two pulse width modulated B-4 power converters and a maximum power point tracker (MPPT). Mathematical models of each element of the system are developed ...
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