Results 21 to 30 of about 19,549,251 (206)

Step response and frequency response methods

Automatica, 1979
Abstract In this tutorial very simple methods will be presented by which models for dynamic processes can be obtained. These methods employ step responses of the process or responses to other nonperiodic testsignals or process responses to periodic signals.
openaire   +1 more source

Review of primary frequency control requirements on the GB power system against a background of increasing renewable generation [PDF]

, 2006
This thesis was submitted for the degree of Doctor of Engineering and awarded by Brunel University.The system frequency of a synchronous power system varies with the imbalance of energy supplied and the electrical energy consumed.
Pearmine, Ross
core   +5 more sources

Improved Identification Method for Equivalent Network Parameters of Transformer Windings Based on Driving Point Admittance

IEEE Access
To accurately and efficiently determine the operating state of transformers, based on the driving point admittance method, a trapezoidal equivalent network model for dual-windings transformers was established.
Yi Liu, Xiaobo Pei
doaj   +1 more source

Transfer Learning Based Method for Frequency Response Model Updating with Insufficient Data

Sensors, 2020
Finite element model updating precision depends heavily on sufficient vibration feature extraction. However, adequate amount of sample collection is generally time-consuming in frequency response (FR) model updating. Accurate vibration feature extraction
Zhongmin Deng, Xinjie Zhang, Yanlin Zhao
doaj   +1 more source

Reproducing Transformers’ Frequency Response from Finite Element Method (FEM) Simulation and Parameters Optimization

Energies, 2023
Frequency response analysis (FRA) is being employed worldwide as one of the main methods for the internal condition assessment of transformers due to its capability of detecting mechanical changes.
Regelii Suassuna de Andrade Ferreira, Patrick Picher, Fethi Meghnefi, Issouf Fofana, Hassan Ezzaidi, Christophe Volat, Vahid Behjat   +6 more
doaj   +1 more source

Statistical analysis amplitude-frequency characteristics of power transformer windings in operation

Известия высших учебных заведений: Проблемы энергетики, 2017
In the work is given a statistical analysis of power transformer’s testing results obtained by using frequency response analysis method. The research has been done from the amplitude-frequency characteristics of low voltage windings for twelve ...
M. .. Ndayizeye, R. G. Ildarkhanov, A. E. Usachev   +2 more
doaj   +1 more source

Structural damage detection method using frequency response functions

, 2014
Structural damage detection using measured dynamic data for pattern recognition is a promising approach. These pattern recognition techniques utilize artificial neural networks and genetic algorithm to match pattern features. In this study, an artificial
Chan, Tommy H.T., Bandara, Rupika P., Thambiratnam, David P.   +2 more
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Create Models from Frequency Response Analysis

, 2022
This tutorial shows how to convert the data from the Multitone Analysis in PLECS (or other frequency response measurements) to a transfer function, a parametric model.
Michael Hubatka
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Fault Diagnosis Method for Transformer Winding Based on Differentiated M-Training Classification Optimized by White Shark Optimization Algorithm

Energies
Transformers, serving as critical components in power systems, are predominantly affected by winding faults that compromise their operational safety and reliability.
Guochao Qian, Kun Yang, Jin Hu, Hongwen Liu, Shun He, Dexu Zou, Weiju Dai, Haozhou Wang, Dongyang Wang   +8 more
doaj   +1 more source

MIMO LS-SVR-Based Multi-Point Vibration Response Prediction in the Frequency Domain

Applied Sciences, 2020
To predict the multi-point vibration response in the frequency domain when the uncorrelated multi-source loads are unknown, a data-driven and multi-input multi-output least squares support vector regression (MIMO LS-SVR)-based method in the frequency ...
Cheng Wang, Delei Chen, Haiyang Huang, Wei Zhan, Xiongming Lai, Jianwei Chen   +5 more
doaj   +1 more source