Results 11 to 20 of about 41,086 (208)
Current Transformer Saturation Detection Method Based on Artificial Neural Network
Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2023 When current transformer is saturated, mainly due to the presence of an exponentially decaying DC component in the fault current, its secondary current has a distinctive distorted waveform which significantly differs from its primary (true) waveform.
Yu. V. Rumiantsev
doaj +1 more source
Prevention of the current transformer saturation by using negative resistance
IET Generation, Transmission & Distribution, 2021 In the power grid, various conditions may occur that saturate the core of a current transformer. Saturation of the protection core of the current transformers can cause a malfunction in the protection relays.
Saeed Sanati, Yousef Alinejad‐Beromi
doaj +1 more source
Zhongguo dianli, 2023 Since the fault current output from the doubly-fed wind farm has frequency deviation characteristics and contains large harmonic components, when an internal fault occurs in the transmission transformer for the doubly-fed wind farm, the ratio of the ...
Yanchun XU +3 more
doaj +1 more source
Analysis of operation of transformer differential protection under current transformer saturation: Software simulations and relay testing [PDF]
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2021 In the paper the analyses of the current transformer saturation influence to operation of differential protection are presented. Analyses are performed using a simulation tool and a relay model, as well as using the physical relay by injecting test ...
Sučević Nikola +2 more
doaj +1 more source
Вестник Северо-Кавказского федерального университета, 2022 Despite the fact that the problem of saturation of current transformers (CT) has been known for a long time, it has not lost its relevance now. Cases of malfunctioning as a result of oversaturation of CT are still recorded today.
P. Shagimardanov
doaj +1 more source
Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2021 Recently, there has been an increased interest in the use of artificial neural networks in various branches of the electric power industry including relay protection.
Yu. V. Rumiantsev, F. A. Romaniuk
doaj +1 more source
Fast Detection of Current Transformer Saturation Using Stacked Denoising Autoencoders
Energies, 2023 Malfunctions in relay protection devices are predominantly caused by current transformer (CT) saturation which produces distortion in current measurements and disturbances in power system protection.
Sopheap Key +3 more
doaj +1 more source
Bayesian Deep Neural Network to Compensate for Current Transformer Saturation
IEEE Access, 2021 Current transformer saturation has a negative effect on the operation of IEDs, resulting in their malfunction. Here, we present a technique to compensate for saturated waveforms using Bayesian Deep Neural Network (BDNN) comprising Deep Neural Network ...
Sopheap Key +3 more
doaj +1 more source
Comparison of Mathematical Methods for Compensating a Current Signal under Current Transformers Saturation Conditions [PDF]
Sensors, 2021 Current measurements from electromagnetic current transformers are essential for the construction of secondary circuit systems, including for protection systems. Magnetic core of these transformers are at risk of saturation, as a result of which maloperation of protection algorithms can possibly occur.
Ismoil Odinaev +7 more
openaire +4 more sources
Saturation Detection-Based Blocking Scheme for Transformer Differential Protection
Energies, 2014 This paper describes a current differential relay for transformer protection that operates in conjunction with a core saturation detection-based blocking algorithm.
Byung Eun Lee +5 more
doaj +1 more source