Journal ArticleDOI
Optimum Shunt Capacitor for Power Factor Correction at Busses with Lightly Distorted Voltage
TLDR
In this article, the effect of time variation of system impedances and voltage harmonics on the value of optimum capacitor for power factor correction at busses with nonsinusoidal voltage was determined.Abstract:
The goal of this paper is to determine the effect of time variation of system impedances and voltage harmonics on the value of optimum capacitor for power factor correction at busses with nonsinusoidal voltage. Two types of 24 hours time-variation of voltage harmonices and Thevenin impedance are assumed. The equivalent load impedance is also considered time variable and assumed to contain a large proportion of induction motors. The daily energy losses are computed and graphed in function of the shunt capacitance used for power factor correction. The results of this study indicate that in order to avoid resonances and to find the optimum capacitor the time variation of harmonics and system impedances must be known as precise as possible.read more
Citations
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Journal ArticleDOI
An artificial neural-net based method for predicting power system voltage harmonics
TL;DR: A novel method for predicting power system voltage harmonics with an artificial neural network based on the backpropagation learning technique for feedforward neural networks is presented.
Journal ArticleDOI
Impact of cycloconverter harmonics
R.F. Chu,J.J. Burns +1 more
TL;DR: In this article, the harmonics generated by a 15 MVA three-phase 13.2 kV 60 Hz to single-phase 24/12 kV 25 Hz cycloconverter were analyzed.
Journal ArticleDOI
Power Factor Correction for Distorted Bus Voltages
TL;DR: The various optimization criteria are discussed for determining the optimal capacitor for power factor correction and the performance of the obtained capacitor is discussed by means of numerical examples.
Journal ArticleDOI
Optimal LC compensators for nonlinear loads with uncertain nonsinusoidal source and load characteristics
TL;DR: In this paper, a method for finding the optimum fixed LC combination for power factor compensation of nonlinear loads where both source and load impedances are represented as randomly time-varying quantities is presented.
Journal ArticleDOI
Comparing capacitive and LC compensators for power factor correction and voltage harmonic reduction
R.K. Hartana,G.G. Richards +1 more
TL;DR: In this article, a series reactor is inserted in series with the local compensating capacitor to minimize voltage harmonic distortion at the bus while holding the fundamental power factor (displacement factor) at a desired value.
References
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Journal ArticleDOI
A New Method to Eliminate AC Harmonic Currents by Magnetic Flux Compensation-Considerations on Basic Design
H. Sasaki,Machida Takehiko +1 more
TL;DR: In this article, a new method of eliminating ac harmonic current is proposed, which is based on the principle of the magnetic flux compensation in a transformer core, by means of the new method, abnormal harmonics as well as normal harmonics can effectively be dealt with.
Journal ArticleDOI
A Direct Method for Identifying the Optimal Power Factor Correction in Nonsinusoidal Systems
Ronnie F. Chu,Raul H. Avendano +1 more
TL;DR: In this article, a new method employing the Golden Section search algorithm to determining the capacitor value for optimal power factor correction in a nonsinusoidal system is presented. But the major attribute of the method is that it, unlike conventional approaches, guarantees convergence to the optimal solution.
Journal ArticleDOI
Power factor correction in nonsinusoidal systems by the use of capacitance
W Shepherd,P Zakikhani +1 more
TL;DR: In this paper, the authors considered a nonsinusoidal circuit with three hypothetical components known as the active voltamperes SR, the true reactive voltage SX, and the apparent distortion voltage SD, and derived the optimum value of capacitance to give maximum power factor operation.
Journal ArticleDOI
Capacitors Near Loads? The Engineering Viewpoint
Myron Zucker,John J. Erhart +1 more
TL;DR: In this paper, the most economical safe effective ways to improve power factor within the plant distribution system are reviewed, as well as new practices brought on by changes in load, particularly machines, and in capacitors.
Journal ArticleDOI
Capacitors in power systems with rectifier loads
TL;DR: STATIC capacitors have come into widespread use as an efficient and economical source of reactive power for a-c systems and are sometimes a problem when applying capacitors to a system.
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