Download or read book Harmonics in a Wind Power Plant Preprint written by and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind power generation has been growing at a very fast pace for the past decade, and its influence and impact on the electric power grid is significant. As in a conventional power plant, a wind power plant (WPP) must ensure that the quality of the power being delivered to the grid is excellent. At the same time, the wind turbine should be able to operate immune to small disturbances coming from the grid. Harmonics are one of the more common power quality issues presented by large WPPs because of the high switching frequency of the power converters and the possible nonlinear behavior from electric machines (generator, transformer, reactors) within a power plant. This paper presents a summary of the most important issues related to harmonics in WPPs and discusses practical experiences with actual Type 1 and Type 3 wind turbines in two WPPs.
Download or read book Self Excitation and Harmonics in Wind Power Generation written by and published by . This book was released on 2005 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditional wind turbines are equipped with induction generators. Induction generators are preferred because they are inexpensive, rugged, and require very little maintenance. Unfortunately, induction generators require reactive power from the grid to operate. Because reactive power varies with the output power, the terminal voltage at the generator may become too low to compensate the induction generator. The interactions among the wind turbine, the power network, and the capacitor compensation, are important aspects of wind generation. In this paper, we will show the interactions among the induction generator, capacitor compensation, power system network, and magnetic saturations and examine the cause of resonance conditions and self-excitation.
Download or read book Self Excitation and Harmonics in Wind Power Generation written by and published by . This book was released on 2005 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditional wind turbines are equipped with induction generators. Induction generators are preferred because they are inexpensive, rugged, and require very little maintenance. Unfortunately, induction generators require reactive power from the grid to operate. Because reactive power varies with the output power, the terminal voltage at the generator may become too low to compensate the induction generator. The interactions among the wind turbine, the power network, and the capacitor compensation, are important aspects of wind generation. In this paper, we will show the interactions among the induction generator, capacitor compensation, power system network, and magnetic saturations and examine the cause of resonance conditions and self-excitation.
Download or read book Coherence in Wind Farm Power Harmonics written by R. O. Nellumo and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Framework to Analyze the Stochastic Harmonics and Resonance of Wind Energy Grid Interconnection written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study addresses a modeling and analysis methodology for investigating the stochastic harmonics and resonance concerns of wind power plants (WPPs). Wideband harmonics from modern wind turbines are observed to be stochastic, associated with real power production, and they may adversely interact with the grid impedance and cause unexpected harmonic resonance if not comprehensively addressed in the planning and commissioning of the WPPs. These issues should become more critical as wind penetration levels increase. We thus propose a planning study framework comprising the following functional steps: First, the best-fitted probability density functions (PDFs) of the harmonic components of interest in the frequency domain are determined. In operations planning, maximum likelihood estimations followed by a chi-square test are used once field measurements or manufacturers' data are available. Second, harmonic currents from the WPP are represented by randomly-generating harmonic components based on their PDFs (frequency spectrum) and then synthesized for time-domain simulations via inverse Fourier transform. Finally, we conduct a comprehensive assessment by including the impacts of feeder configurations, harmonic filters, and the variability of parameters. We demonstrate the efficacy of the proposed study approach for a 100-MW offshore WPP consisting of 20 units of 5-MW full-converter turbines, a realistic benchmark system adapted from a WPP under development in Korea, and discuss lessons learned through this research.
Download or read book Harmonic Generation Effects Propagation and Control written by J. C. Das and published by CRC Press. This book was released on 2017-10-24 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides coverage of generation, effects, and control of harmonics, including interharmonics and measurements, measurements and estimation of harmonics, harmonic resonance and limitations, according to standards. It serves as a practical guide to undergraduate and graduate students, as well as practicing engineers on harmonics. The concepts of modeling filter designs and harmonic penetrations (propagations) in industrial systems, distribution, and transmission systems are amply covered with the application of SVCs and FACTS controllers. Harmonic analysis in wind and solar generating plants are also discussed. Many case studies and practical examples are included to emphasize real-world applications. The appendices are devoted to Fourier analysis, pertinent to harmonic analysis, and solutions to the problems included throughout the book.
Download or read book HARMONIC MODELLING PROPAGATION AND MITIGATION FOR LARGE WIND POWER PLANTS CONNECTED VIA EXTRA LONG HVAC CABLES written by and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Analysis of Wind Turbine Planetary Gears Using an Extended Harmonic Balance Approach written by Yi Guo and published by . This book was released on 2012 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dynamics of wind turbine planetary gears with gravity effects are investigated using an extended harmonic balance method that extends established harmonic balance formulations to include simultaneous internal and external excitations. The extended harmonic balance method with arc-length continuation and Floquet theory is applied to a lumped-parameter planetary gear model including gravity, fluctuating mesh stiffness, bearing clearance, and nonlinear tooth contact to obtain the planetary gear dynamic response. The calculated responses compare well with time domain integrated mathematical models and experimental results. Gravity is a fundamental vibration source in wind turbine planetary gears and plays an important role in system dynamics, causing hardening effects induced by tooth wedging and bearing-raceway contacts. Bearing clearance significantly reduces the lowest resonant frequencies of translational modes. Gravity and bearing clearance together lowers the speed at which tooth wedging occurs lower than the resonant frequency.
Download or read book Understanding Inertial and Frequency Response of Wind Power Plants written by Eduard Muljadi and published by . This book was released on 2012 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this paper is to analyze and quantify the inertia and frequency responses of wind power plants with different wind turbine technologies (particularly those of fixed speed, variable slip with rotor-resistance controls, and variable speed with vector controls).
Download or read book Short term Power Fluctuations of Large Wind Power Plants written by Yih-huei Wan and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Short Term Power Fluctuations of Large Wind Power Plants written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: With electric utilities and other power providers showing increased interest in wind power and with growing penetration of wind capacity into the market, questions about how wind power fluctuations affect power system operations and about wind power's ancillary services requirements are receiving lots of attention. The project's purpose is to acquire actual, long-term wind power output data for analyzing wind power fluctuations, frequency distribution of the changes, the effects of spatial diversity, and wind power ancillary services.
Download or read book Symmetrical and unsymmetrical fault currents of a wind power plant written by Vahan Gevorgian and published by . This book was released on 2011 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Short circuit Modeling of a Wind Power Plant written by E. Muljadi and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mitigation of Load Harmonics from Grid Connected Wind Turbine Using Shunt Active Power Filter written by Sajid Hussain Qazi and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mitigation of Load Harmonics from Grid Connected Wind Turbine written by Sajid Hussain Qazi and published by . This book was released on 2017-01-28 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wind Energy Generation Systems written by British Standards Institution and published by . This book was released on 2019 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Symmetrical and Unsymmetrical Fault Currents of a Wind Power Plant written by Vahan Gevorgian and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
