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In this work the impact of wind power integration on the power system of Rio Grande do Sul (RS) is analyzed. The impact is analyzed in terms of power flow simulation considering minimum and maximum load conditions. Contingencies are also simulated and the consequence on the power flow is analyzed.
According to the growth of power generated by wind farms and the increased number of non-linear loads, providing a high quality electrical power, should be considered. This paper is addressed the issue of application and analysis of a Dynamic Voltage Restorer (DVR) to enhance the quality of power flows in a stand-alone microgrid, including wind energy conversion systems and the sensitive loads. The...
Traditional definitions of power quantities presented in the IEEE Standard 1459-2000 are compatible only with stationary waveforms, however for non-stationary waveforms, the wavelet-based approach has been shown to be more suitable. This paper develops a new wavelet packet transform (WPT) based approach for measuring the recommended power quantities in the IEEE Standard. The reformulated quantities...
The amount of electrical energy produced by wind farms is constantly increasing. Nowadays detailed analyses considering the impact of wind energy integration on the transmission system are required. Therefore several wind impact studies have been carried out. The conclusions of these studies are related to different aspects of wind power, such as it's fluctuating nature, distributed location of wind...
Renewable energy sources have the great advantage of being able to provide power in rural areas whenever available. A main disadvantage of wind energy generation (WEG) is the variation of its output power with the variation of wind speed. Such variation may lead to significant consequences on the power quality. When a critical load is fed from both the infinite grid and a wind farm, such that, it...
A power electronics-based buffer is examined in which through control of its PWM converters, the buffer-load combination is driven to operate under either constant power or constant impedance modes. A battery, incorporated within the buffer, provides the energy storage facility to facilitate the necessary power flow control. Real power demand from upstream supply is regulated under fault condition,...
For the recent expansion of renewable energy applications, wind energy conversion is receiving much interest all over the world. However, output fluctuations of wind generators cause network frequency variation in power system. This can decrease power quality and then cause a restriction of wind farm installation, especially in a small power system. Therefore this problem needs to be solved for further...
A possible reason for a low power quality at the output of a 132 MW wind farm is investigated. A resonant circuit formed by the wind farm components is found to be responsible for a high level of the dominating 7th current harmonic. Various compensation strategies are proposed and analyzed.
Wind power fluctuations have adverse impacts on power quality, such as local voltage and system frequency. Integrating an energy storage system (ESS) in a wind farm reduces wind power fluctuations. Various ESS technologies and configurations are viable for this application. This paper examines aggregated and distributed connection topologies of the ESS technologies within the wind farm. The power...
An innovative conversion system called synchronous active front-end (SAFE) is considered one of the most efficient solutions that successfully manages the well known trade-off between high power handling and good power quality. In wind energy applications switching converters are used to transfer the captured power to the grid. Their non-linear behavior must be considered, since the injected power...
Like conventional power plants, wind power plants must provide the power quality required to ensure the stability and reliability of the power system it is connected to and to satisfy the customers connected to the same grid. When wind energy development began, wind power plants were very small, ranging in size from under one megawatt to tens megawatts with less than 100 turbines in each plant. Thus,...
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