Results 251 to 260 of about 89,369 (307)

Harmonic voltage measurements using CVTs

IEEE Power Engineering Society General Meeting, 2004., 2005
A 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.
F. Ghassemi, P. Gale, T. Cumming, C. Coutts   +3 more
openaire   +2 more sources

Considerations on probabilistic harmonic voltages

2003 IEEE Power Engineering Society General Meeting (IEEE Cat. No.03CH37491), 2004
Some considerations on probabilistic harmonic voltages are given. Reference is made to modeling both for provisional analyses and to measurements for compliance with limits fixed by standards. Numerical and experimental case-studies are developed and analyzed.
LANGELLA, Roberto, TESTA, Alfredo
openaire   +2 more sources

Voltage harmonic distortion measurements using capacitive voltage transformers

Proceedings of IEEE. AFRICON '96, 2002
This paper investigates the application of capacitive voltage transformers (CVTs) for harmonic distortion measurements. Measured and simulated frequency responses are given for the voltage transformation ratio and the transconductance ratio of the capacitive divider ground return current and the high voltage input signal of a 400 kV CVT.
H.J. Vermeulen, P. Davel
openaire   +1 more source

Harmonic Voltage Measurement based on Program Josephson Voltage Standard

2020 Conference on Precision Electromagnetic Measurements (CPEM), 2020
This paper investigates the feasibility of applying the program Josephson voltage standard to harmonic measurements. When using AC quantum voltage for harmonic voltage measurement, some data will fluctuate greatly due to the transition and Gibbs phenomenon.
Zhengsen Jia, Xitong Xu, Lei Wang, Jiangtao Zhang, Xianlin Pan, Zhaomin Shi   +5 more
openaire   +1 more source

Voltage harmonics compensator for high-voltage power supplies

2013 International Conference-Workshop Compatibility And Power Electronics, 2013
In this paper, a practical solution for suppression of voltage harmonics in high-voltage power supplies is proposed. The solution is based on three single-phase series active-power filters (SAPF) inserted in a common point of a synchronous generator (SG) through an injection transformer.
Marko Petkovsek, Ales Leban, Mitja Nemec, Danjel Voncina, Peter Zajec   +4 more
openaire   +1 more source

Harmonics in high voltage networks

8th International Conference on Harmonics and Quality of Power. Proceedings (Cat. No.98EX227), 2002
The paper presents the results of studies in the area of harmonics in HV networks that were obtained at the Siberian Energy Institute. The studies have been performed based on the method of harmonic distortion powers that was developed at the Siberian Energy Institute.
S.S. Smirnov, L.I. Kovernikova
openaire   +1 more source

Harmonic voltage measurements in the low voltage distribution grid

2015 16th International Scientific Conference on Electric Power Engineering (EPE), 2015
The supply territory of the company E.ON Distribution in the Czech Republic (run by the company E.ON Czech Republic) accounts for approximately 1.5 million customers. A problem was detected with harmonic voltage in approximately 14% low voltage (LV) distribution grids [6] without the differentiation of harmonic order.
Martin Kaspirek, David Mezera
openaire   +1 more source

Harmonic measurements: current and voltage transducers

199 IEEE Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.99CH36364), 2003
An overview of the development of special current and voltage transducers at the National Research Council of Canada for accurate measurements of harmonics in power systems will be presented. The transducers include two-stage and electronically-aided instrument transformers, openable-core AC and AC/DC current transformers, multi-stage clamp-on current ...
openaire   +1 more source

Smart Detection of Voltage Dips Using Voltage Harmonics Footprint

IEEE Transactions on Industry Applications, 2018
In 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, Aleksandar M. Stanisavljevic   +1 more
openaire   +1 more source