Results 261 to 270 of about 7,577,420 (289)

Detection and correction of current transformer saturation effects in secondary current signals

2009 IEEE Power & Energy Society General Meeting, 2009
Ideally a current transformer transduces the primary current linearly. In reality the transmission behaviour is non-linear at very high primary currents or at high burden i. e. the current transformer saturates. If saturation takes place the measured secondary current signals are distorted so that protection devices operate delayed or blocked (e.
Philipp Stachel, Peter Schegner
openaire   +1 more source

Compensation of Distorted Secondary Current Caused by Saturation and Remanence in a Current Transformer

IEEE Transactions on Power Delivery, 2010
A large primary current and DC component in a current transformer (CT) will result in a distorted secondary current if the CT becomes saturated. It may lead to a malfunction in the protective relay because of a smaller rms current resulting from the distorted current during fault occurrence.
null Ying-Yi Hong, null Da-Wei Wei
openaire   +1 more source

Magnetic saturation and inrush current in transformers

2008
The project aims to find a new method, used to discriminate between inrush current and short circuit current based on the waveform discrimination using neural network which is different from the conventional method using the ratio of second harmonic current to differential current.
openaire   +1 more source

Algorithm For Restoring The Current Curve When Current Transformers Are Saturated

2021 4th International Youth Scientific and Technical Conference on Relay Protection and Automation (RPA), 2021
A.A. Voloshin, E.A. Voloshin, A.I. Kovalenko, S.A. Shapkin, V.S. Sazanov   +4 more
openaire   +1 more source

Low-frequency dual reversible model of the single-phase two-winding transformer considering the gradually quicker saturation process of the core

International Journal of Electrical Power and Energy Systems, 2021
Binyang Zou, Ming Yang, Duan Pan
exaly  

Transformer Saturation Methods and Transformer Response to Low Frequency Currents

2020
Prohammer, Andreas, Rüschitz, Matthias, Albert, Dennis, Renner, Herwig   +3 more
openaire   +1 more source

DISCRETE WAVELET TRANSFORM BASED APPROACH for CURRENT TRANSFORMER SATURATION PROBLEM

2022
This work is about the possible effects of protection devices and schemes during current transformer saturation. If current transformer specifications are not selected properly, saturation may occur and affect relay response or even fail to trip. Hence, the performance of the protection devices such as differential and impedance relays is mainly based ...
openaire   +1 more source

Discrete Fréchet distance algorithm based criterion of transformer differential protection with the immunity to saturation of current transformer

International Journal of Electrical Power and Energy Systems, 2020
Zhenhua Li, Yi Wan, Hanli Weng
exaly  

Saturation prevention of current transformer

2020
YANG LIUQING, YE JIAN, ZHU ZHIJIE
openaire   +1 more source

Further Improvements in Topological Transformer Model Covering Core Saturation

IEEE Access, 2022
Sergey Zirka, Moroz Yuriy, Dennis Albert
exaly