Evaluating the electromagnetic forces on the electric arc furnaces’ power cables under various operation conditions

Jamali-Abnavi, Ahmadreza; Hashemi‐Dezaki, Hamed

doi:10.1016/j.epsr.2021.107553

Cited by 5 publications

(3 citation statements)

References 28 publications

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“…The authors were basing measurements on the manufacturer's documentation and measurements of real dimensions on a physical device, developed a 3D model of the disconnector in question for the purposes of the simulation. This was the basis for analyzing the electrodynamic interactions in the moving contacts and current paths of the disconnector and for verifying the values of electrodynamic forces affecting the porcelain support insulators of the disconnector [22][23][24]. A properly prepared 3D structural model of the disconnector, taking into account the dimensions and construction details, is shown in the Figure 7 below.…”

Section: Geometrical Model Of Themedium Voltage Disconnectormentioning

confidence: 99%

Examination of Electrodynamic Forces in High Voltage Disconnector Related to the Short-Circuit Current Using the Digital Twin Technology

Szulborski,

Łapczyński,

Kolimas

et al. 2024

IEEE Access

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Paper concerns the novel modelling technology called Digital Twin in aspect of physical phenomenon simulation analysis. Digital Twin model concerning electrodynamic forces in three-phase high voltage disconnector was presented, validated and discussed. Experiences related to laboratory work and measurement of electrodynamic forces clearly showed that often, despite the use of modern computing machines, the research process is hard, very expensive and values of electrodynamic forces are almost impossible to measure in real scale conditions. Hence the idea to use very advanced field models minimized to a reduced order model (ROM), using the Digital Twin Technology seemed valid and rendered possibilities for advancements concerning this type of research. Due to the large weight of devices (chokes, transformers, disconnectors) on high-voltage networks it is often time-consuming or even impossible to perform the entire simulation. Proposed modelling approach helps to obtain results from very complex models also for longterm thermal tests. The reduced order model can be used not only by researchers, but also in the development departments of enterprises. Digital Twin model results were compared and validated with values derived from short-circuit tests made in Institute of Power Engineering, Research Institute.

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Section: Geometrical Model Of Themedium Voltage Disconnectormentioning

confidence: 99%

Examination of Electrodynamic Forces in High Voltage Disconnector Related to the Short-Circuit Current Using the Digital Twin Technology

Szulborski,

Łapczyński,

Kolimas

et al. 2024

IEEE Access

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“…In [19], the electrodynamic forces generated in transformers during a short circuit in power systems can be dangerous for the windings; therefore, transformers must be designed with certainty that the windings will withstand these forces. The article presents a computational model of a transformer made for calculations of electrodynamic forces in windings in the Comsol Multiphysics modeling environment.…”

Section: State Of the Artmentioning

confidence: 99%

Electrodynamic Forces in Main Three-Phase Busbar System of Low-Voltage Switchgear—FEA Simulation

Łapczyński,

Szulborski,

Kolimas

et al. 2024

Energies

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This paper concerns the effects of electrodynamic forces that act on current paths that are part of high-grade industrial distribution switchgear. This work is composed of experimental and simulation sections. In the experimental section, the short-circuit tests are presented and the occurrence of electrodynamic forces are shown in a visible way. The formation of electrodynamic forces in the current circuits of electrical energy distribution systems is related to the flow of high currents, but mostly it is related to short-circuit currents. In order to highlight these phenomena, the detailed specification of the parameters during tests is displayed. In the simulation section, the physical phenomenon of electrodynamic forces is being captured by employing a detailed real-scale model of switchgear and current paths. Therefore, the authors proposed employment of the FEM (finite element method) in order to obtain values of electrodynamic forces acting on the current paths by executing the detailed 3D coupled simulation. The analysis of the results and aftermath effects of their interactions provided interesting conclusions that concerned the operation of such power distribution layouts in critical short-circuit conditions.

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“…In addition, a multi-stage pattern recognition method that can detect the internal and external damage of the main cable and combine artificial neural network (ANN) has been investigated. However, the magnetic flux method is susceptible to chemical corrosion leading to MFL [ 14 ], and the current size affects the electromagnetic force [ 15 ]. Du et al [ 16 ] used two measurement methods based on digital image technology, namely, digital image processing (DIP) and digital image correlation (DIC).…”

Section: Introductionmentioning

confidence: 99%

Measurement of Cable Force through a Fiber Bragg Grating-Type Thin Rod Vibration Sensor and Its Application

Zhu

Teng

Liu

et al. 2022

Sensors

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The key to evaluating the health status of cable-stayed bridges lies in the accuracy of cable force measurement. When measuring the cable force using the conventional frequency method, the clearance between the bracing cable and the protective tube is typically disregarded. Moreover, due to their large size, existing vibration sensors are difficult to install into protective tubes for steel strand-type bracing cables to measure the cable force. To address the above difficulties, a type of thin rod vibration sensor only 5 mm in diameter was designed based on the high sensitivity of Fiber Bragg grating (FBG), and high-throughput data processing software for engineering calculation (EC) was self-developed. Then, the recognition principle of the thin rod vibration sensor was theoretically analyzed and a step-by-step tension test was carried out. The results demonstrated that the relative error of the cable force measured by the thin rod vibration sensor within 12.865 Hz was less than 5% and the sensitivity reached 28.7 pm/Hz, indicating its high measurement precision. Upon subsequent application of the thin rod vibration sensor to a monitoring test in the field, the relative error of the fundamental frequency between artificial and natural excitations was less than 4%. In addition, the error relative to both the theoretical frequency and the third-party sampling frequency was less than 5%, further verifying the accuracy and applicability for monitoring the cable force of bridges under natural excitation. Compared with the traditional cantilever FBG sensor, the improved sensor with supporting data processing software has the advantages of small cross-section, high reliability, and good sensitivity. The research results can provide a reference for the subsequent accurate measurement of cable force and the development of a supporting sensor data processing system.

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Evaluating the electromagnetic forces on the electric arc furnaces’ power cables under various operation conditions

Cited by 5 publications

References 28 publications

Examination of Electrodynamic Forces in High Voltage Disconnector Related to the Short-Circuit Current Using the Digital Twin Technology

Examination of Electrodynamic Forces in High Voltage Disconnector Related to the Short-Circuit Current Using the Digital Twin Technology

Electrodynamic Forces in Main Three-Phase Busbar System of Low-Voltage Switchgear—FEA Simulation

Measurement of Cable Force through a Fiber Bragg Grating-Type Thin Rod Vibration Sensor and Its Application

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