Abstract
The search for alternative sources of energy, aimed at supplying the energy matrix, has shown a rapid increase in the use of wind energy worldwide. However, the interaction between wind farms and the electrical networks has shown itself to be an area of research interest. Among those phenomena that require evaluations by regulatory agencies, which in general aim at authorizing access to electric networks, emphasis is given to the following performance magnitudes: harmonic distortions, flicker, impacts on steady state voltages, transitory and dynamic performances, etc. The focus is here placed upon studies related to the estimation of individual and total harmonic distortions that are produced on the connection bus, these are frequently performed through use of computational resources. To this end, the studies are conducted on the basis of injecting individual harmonic current components produced by the generating units, which once adequately fixed, interact with the harmonic impedances determined by the composition of the internal network of the windfarm, along with the geometric locations that characterize the harmonic impedances of the connecting network. Therefore, such evaluations are performed based on equivalent Norton harmonics, which require, as a premise, the harmonic currents that are produced and injected. In this context, the present article is centered on specific issues linked to the qualitative and quantitative characterization of these harmonic currents, with emphasis on operational factors that exert influence on its orders and amplitudes. This work is conducted in order to clarify the origin and nature of the generated currents, the factors that influence such magnitudes, and finally, an evaluation of the theme through experimental studies performed for a laboratory installation aimed at emulating a full converter type of wind generator.
Acknowledgements
The authors are grateful to CAPES, FAPEMIG (Project: TEC APQ 2381-13) and FAPDF (Project: 193.001.505/2017) for the financial support for this research.
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Artikel in diesem Heft
- Research Articles
- The Hybrid Real-Time Dispatcher Training Simulator: Basic Approach, Software-Hardware Structure and Case Study
- New Monitoring Program of Transformer Substation Foundation Settlement
- A New Algorithm for Three-Phase Power Transformer Differential Protection Considering Effect of Ultra-Saturation Phenomenon Based on Discrete Wavelet Transform
- Planning Method of Regional Integrated Energy System considering Demand Side Uncertainty
- Operation Scheduling of Household Load, EV and BESS Using Real Time Pricing, Incentive Based DR and Peak Power Limiting Strategy
- A Multi-Objective Framework to Improve Voltage Stability in A Distribution Network
- Power Supply Mode Planning of Electric Vehicle Participating in Logistics Distribution Based on Battery Charging and Swapping Station
- Experimental Evaluation of Wind Turbines Inverters on Generating Harmonic Currents
- Integrated Power Flow Analysis with Large-scale Solar Photovoltaic Power Systems Employing N-R Method
- Modelling and Dynamic Stability Study of Interconnected System of Renewable Energy Sources and Grid for Rural Electrification
- Enhancement the Dynamic Performance of Islanded Microgrid Using a Coordination of Frequency Control and Digital Protection
- An Innovative Solution for Type Testing of Power Transformers