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Accuracy of inductive voltage transformer in the presence of voltage high harmonics
2014 ICHVE International Conference on High Voltage Engineering and Application, 2014In the paper the issue of determining the voltage transformer's (VT) accuracy when operating with distorted signals is presented. In the measuring system specially designed high impedance differential amplifier and wide frequency voltage divider were used.
M. Kaczmarek, S. Jama
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Smart Detection of Voltage Dips Using Voltage Harmonics Footprint
IEEE Transactions on Industry Applications, 2018In order to enable voltage ride-through operation, fast and reliable voltage dips detection is necessary. It has been noticed by the analysis of a huge number of measurement results recorded in-field, in laboratory, and obtained by simulation that the voltage dips may be characterized by specific low-order voltage harmonics pattern, which appears at ...
Vladimir A. Katic +1 more
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Boundary control of dynamic voltage restorers in voltage harmonic compensation
2006 37th IEEE Power Electronics Specialists Conference, 2006Dynamic voltage restorer (DVR) is used to provide load voltage support and protect sensitive load during voltage sags situation. However, voltage sags do not appear frequently and hence the utilization of the DVR is low. In order to increase the utilization of the DVR, the DVR should operate to compensate any load voltage instability especially the ...
Chung, HSH, Hui, SYR, Chan, PKW
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Evaluation and updating of harmonic voltage limits
2015 IEEE Eindhoven PowerTech, 2015Characteristics of the current emission for new developed devices are changing resulting in lower low order harmonics and an increase in high order harmonics. For the low voltage network this results in an increase in high order harmonic voltages, violating more often the limits for the harmonic voltages at the 15th and 21th order harmonic.
Cobben, J.F.G. +3 more
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Modeling of loads dependent on harmonic voltages
Electric Power Systems Research, 2017Abstract Electrical system models are important to allow the accomplishment of several studies aiming at reducing losses, and improving power quality, among others. In the current context, carrying out harmonic analysis becomes necessary due to the increasing insertion of nonlinear loads in the system.
Marcelo Brunoro +2 more
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Prediction of Harmonic Voltages in Distribution Systems
IEEE Power Engineering Review, 1981The aim of this paper is two-fold. First, it develops workable models for specific devices which are known to inject harmonics into power distribution systems, namely ac-dc converters. Second, these models are then combined with distribution system elements, and the resulting network is solved to yield harmonic voltages.
D. Pileggi, N. Chandra, A. Emanuel
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Harmonic considerations on low voltage systems
[Proceedings] IEEE 1991 Annual Textile, Fiber and Film Industry Technical Conference, 2002Guidelines are developed for applying capacitors and harmonic-producing loads on low-voltage systems. The subject is approached from a systems point of view for low voltage applications, emphasizing the system interaction effects and the means that can be used to minimize this interaction.
P.B. Steciuk, K.A. Puskarich, W.E. Reid
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A new approach to voltage and harmonic compensation
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555), 2002This paper presents a novel compensation scheme based on two active filters to improve power quality in distribution networks. The scheme provides voltage compensation at the load for source voltage sags, and swell, as well as minimizing the impact of the load harmonics on the distribution network.
T.A. Kandil, J.E. Quaicoe
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Harmonic voltage measurements using CVTs
IEEE Transactions on Power Delivery, 2005A method for harmonic measurements in EHV systems is proposed that is based on the measurement of currents in capacitor voltage transformers (CVT) and values of capacitor elements of CVTs. This is the basis of a new technique, which uses current sensors installed within CVTs.
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Control Strategy of Voltage Compensation with Harmonics for Dynamic Voltage Restore
2023 8th International Conference on Power and Renewable Energy (ICPRE), 2023Shiwei Chen +5 more
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