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Power system harmonics

Xem 1-20 trên 48 kết quả Power system harmonics
  • Harmonic distortion problems include equipment overheating, motor failures, capacitor failure and inaccurate power metering. The topic of power system harmonics was covered for the first time 20 years ago and the first edition has become a standard reference work in this area. Unprecedented developments in power electronic devices and their integration at all levels in the power system require a new look at the causes and effects of these problems, and the state of hardware and software available for harmonic assessment.

    pdf190p chipmoon 19-07-2012 113 40   Download

  • I have been undertaking the research and practical applications of power system optimization since the early 1980s. In the early stage of my career, I worked in universities such as Chongqing University (China), Brunel University (UK), National University of Singapore, and Howard University (USA). Since 2000 I have been working for AREVA T & D Inc (USA). When I was a full - time professor at Chongqing University, I wrote a tutorial on power system optimal operation, which I used to teach my senior undergraduate students and postgraduate students in power engineering until 1996.

    pdf623p nguyenthai_thinh 16-03-2013 74 24   Download

  • Tham khảo sách 'handbook of networks in power systems ii', kỹ thuật - công nghệ, điện - điện tử phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf0p nguyenthai_thinh 16-03-2013 64 22   Download

  • In a normal alternating current power system, the voltage varies sinusoidally at a specific frequency, usually 50 or 60 hertz. When a linear electrical load is connected to the system, it draws a sinusoidal current at the same frequency as the voltage (though usually not in phase with the voltage). When a non-linear load, such as a rectifier, is connected to the system, it draws a current that is not necessarily sinusoidal. The current waveform can become quite complex, depending on the type of load and its interaction with other components of the system.

    pdf190p kennybibo 14-07-2012 89 15   Download

  • Power engineering is truly one of the main pillars of the electricity-driven modern civilization. And over the years, power engineering has also been amultidisciplinary field in terms of numerous applications of different subjects. This ranges from linear algebra, electronics, signal processing to artificial intelligence including recent trends like bio-inspired computation, lateral computing and the like.

    pdf383p aries23 29-09-2012 84 18   Download

  • This paper focuses on the wind turbine technology influences on the power system voltage stability and on the power system quality. Because of lacking controls on active and reactive power, this wind turbine technology is considered the poorest power quality when harmonics problems are not concerned.

    pdf6p byphasse043256 24-03-2019 14 0   Download

  • This book is mainly intended for designers and users of magnetic components in power electronics. It can also be used for didactical purposes. Magnetic components such as inductors and transformers constitute together with the control and the semiconductor components, the main parts in the design of power electronic converters. Some experience teaches that the design of the magnetic parts is still often done by trial and error. This can be explained by a (too) long working-in time for designing inductors and transformers.

    pdf456p nguyenthai_thinh 16-03-2013 105 38   Download

  • Although inelastic scattering of light from molecules, a phenomenon now known as Raman scattering, was observed by C. V. Raman in 1928, the nonlinear phenomenon of stimulated Raman scattering was not demonstrated until 1962. Soon after low-loss silica fibers became available around 1970, Roger Stolen and coworkers used stimulated Raman scattering in such fibers not only for amplification of optical signals but also for constructing fiber-based Raman lasers.

    pdf389p nguyenthai_thinh 16-03-2013 65 15   Download

  • Electric Drives Ion Boldea and Syed Nasar Linear Synchronous Motors: Transportation and Automation Systems Jacek Gieras and Jerry Piech Electromechanical Systems, Electric Machines, and Applied Mechatronics Sergey E. Lyshevski Electrical Energy Systems Mohamed E. El-Hawary Distribution System Modeling and Analysis William H. Kersting The Induction Machine Handbook Ion Boldea and Syed Nasar Power Quality C. Sankaran Power System Operations and Electricity Markets Fred I. Denny and David E.

    pdf190p khangoc239 10-08-2012 48 6   Download

  • Tham khảo sách 'harmonics and power systems 2006 by taylor & francis group', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf190p khangoc2391 11-08-2012 42 2   Download

  • This paper proposes a new state-space model that can well represent a real threephase power system by taking into account the unbalance conditions and harmonic distortion of a three-phase power system. The model associated with Extended Kalman Filter is then applied to estimate the positive and negative sequences of the fundamental component.

    pdf6p vicapital2711 02-08-2019 5 0   Download

  • Voltage sags can be symmetrical or unsymmetrical depending on the causes of the sag. At the present time, one of the most common procedures for mitigating voltage sags is by the use of dynamic voltage restorers (DVRs). By definition, a DVR is a controlled voltage source inserted between the network and a sensitive load through a booster transformer injecting voltage into the network in order to correct any disturbance affecting a sensitive load voltage. In this paper, modelling of DVR for voltage correction using MatLab software is presented.

    pdf9p kequaidan1 16-11-2019 14 0   Download

  • To mitigate the harmonic problems in industrial power system, the simple way is to use shunt passive filters. This paper presents the effect of compensation and detuning of single tuned shunt passive filter on harmonics of industrial distribution system. The three phase power system and single tuned passive filter is designed, modeled and simulated in MATLAB by using the actual data collected from industry is used.

    pdf5p cothumenhmong1 11-12-2019 6 0   Download

  • In the paper, a new harmonic estimation algorithm for power system is constructed with combining the MUSIC algorithm, the multistage Wiener filter (MSWF) and linear neural network.

    pdf7p vivalletta2711 11-01-2020 5 0   Download

  • This paper points out the deficiency in the current harmonic frequency estimation algorithm in power system. In order to improve the accuracy of detection and reduce the computational complexity, the study combined the ESPRIT algorithm with multistage Wiener filter (MSWF) recurrence to achieve fast estimation of harmonic frequency.

    pdf6p vivalletta2711 11-01-2020 4 0   Download

  • The name of this book is Power Quality, but the title could very well be The Power Quality Do-It-Yourself Book . When I set out to write this book, I wanted it to be user friendly, easy to understand, and easy to apply in solving electrical power system problems that engineers and technicians confront on a daily basis. As an electrical engineer dealing with power system quality concerns, many of the books I consulted lacked direct and precise information and required a very thorough search to find what I needed.

    pdf202p ndkhuong177 14-07-2012 101 33   Download

  • The microcontroller is an exciting new device in the field of electronics control. It is a complete computer control system on a single chip. microcontrollers include EPROM program memory, user RAM for storing program data, timer circuits, an instruction set, special function registers, power on reset, interrupts, low power consumption and a security bit for software protection. Some microcontrollers like the 16F818/9 devices include on board A to D converters.

    pdf320p nguyenthai_thinh 16-03-2013 92 23   Download

  • This book describes high-speed precision motion control technologies which are developed and applied to hard disk drives (HDDs). The first feature of this book is that all the editors and the authors are engineers and professors who are directly engaged in the study and development of HDD servo control. Each author describes the control technologies that he developed, and most of these technologies have already been successfully applied to mass production of HDDs.

    pdf315p nguyenthai_thinh 16-03-2013 79 20   Download

  • The term “ smart grid” defi nes a self - healing network equipped with dynamic optimization techniques that use real - time measurements to minimize network losses, maintain voltage levels, increase reliability, and improve asset management. The operational data collected by the smart grid and its sub - systems will allow system operators to rapidly identify the best strategy to secure against attacks, vulnerability, and so on, caused by various contingencies.

    pdf233p nguyenthai_thinh 16-03-2013 69 16   Download

  • Of the many ages of man—the Stone Age, the Bronze Age, the Iron Age, etc.-that preceded the 1800s, and that led one into the other, none was as rewarding to mankind as the electrical age. We now stand in awe of the space age, andin fear we face the nuclear age. From electricity, however, has been drawn a n ever growing abundance o f light, power, warmth, intelligence, and medical aid-all beneficent, silent, and ready. Electricity is the one force in the arsenal of man that found no precedent in earlier history, nor was it drawn from classical times.

    pdf343p nguyenthai_thinh 16-03-2013 50 15   Download

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