Influence of voltage fluctuations on core vibration of a UHV shunt reactor

Guo, Jiayi; Geng, Jianghai; Lü, Fangcheng

doi:10.3233/jae-201564

Cited by 10 publications

(6 citation statements)

References 16 publications

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“…In [17], it proposes a new triangular core structure for reactors, which achieves vibration damping by means of dispersing the electromagnetic forces on the core. In [18], it investigated the effect of the number of iron core air gaps on the vibration of a UHV shunt reactor, and its research shows that within the range of the reasonable number of air gaps, the fewer the number of iron core air gaps, the weaker the vibration intensity of the reactor. In [19][20], it takes the double-column UHV shunt reactor as the research object.…”

Section: Introductionmentioning

confidence: 99%

“…In [18], it investigated the effect of the number of iron core air gaps on the vibration of a UHV shunt reactor, and its research shows that within the range of the reasonable number of air gaps, the fewer the number of iron core air gaps, the weaker the vibration intensity of the reactor. In [19][20], it takes the double-column UHV shunt reactor as the research object. It proposes the method of adjusting the reactor core air gap length to achieve the goal of vibration reduction of the reactor.…”

Section: Introductionmentioning

confidence: 99%

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RETRACTED: Vibration and Noise Reduction Method of 750kV Shunt Reactor Based on Optimization of Air Gap Structure

Huo,

Min,

Wan

et al. 2023

Preprint

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The vibration noise issue is even more severe when compared to other power equipment because of the distinctive design of the air gap structure used in the 750kV ultra-high voltage shunt reactor. This research suggests an optimum design strategy for vibration reduction of a 750kV Ultra High Voltage (UHV) shunt reactor based on the study of the differential design of the iron core structure to address the issue of excessive vibration noise of this equipment. The 750kV UHV shunt reactor's electromagnetic-mechanical-acoustic field coupling model is first created, and the vibration and noise distributions produced by the iron core's combined magnetostriction and Maxwell force are analyzed and calculated; then, the simulation model of thirty distinct types of reactors with various air-gap architectures is built by modifying the arrangement of the length of the air gap of the iron core column. Then, by adjusting how the air gap lengths of the core columns are arranged, simulation models of 30 different types of reactors with various air gap structures are created. The effect of the air gap lengths in various core column regions on reactor vibration is then examined. The improved Hunter Prey Optimization (HPO) algorithm, with the inductance value being constant, determines the ideal air gap length of the iron core using the minimal vibration displacement of the reactor core as the objective function. The optimization method is crucial for reducing the vibration and noise of iron core reactors because the results show that the maximum reduction of the reactor's vibration displacement is 10.99%, the maximum reduction of noise at the measurement point is 9.2dB, and the change in inductance value is only 0.12% under the ideal core structural parameter.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

RETRACTED: Vibration and Noise Reduction Method of 750kV Shunt Reactor Based on Optimization of Air Gap Structure

Huo,

Min,

Wan

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Ultra-high voltage (UHV) shunt reactors play key roles in the power grid; ensuring its safe and stable operation can greatly improve the reliability of UHV power grid operation. Due to the existence of external excitation or internal electromagnetic force, electrical equipment during the actual operation is often run in mechanical motion and other states [2][3] .…”

Section: Introductionmentioning

confidence: 99%

Influences of the vibration frequency and phase of the core of ultra-high voltage shunt reactors on suspended discharge in oil-paper insulation

yu,

liu,

et al. 2024

Preprint

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Severe vibration of the core of ultra-high voltage (UHV) shunt reactors under the operating conditions often leads to the occurrence of suspension electrode, and such a suspended discharge defect will destroy the oil-paper insulation. It is necessary to investigate the influence of vibration on suspended discharge when determining the best operating condition of UHV shunt reactors. The vibration frequency of the suspension electrode and the phase difference between the applied voltage and the vibration are studied by simulation and experiment. The simulation results show that the phase difference between the voltage and the vibration parameters will result in the increase of the surface maximum field strength. The distortion of the field intensity caused by several typical vibration frequencies of reactor vibration is ranked (in ascending order) thus: 100 Hz, 300 Hz, 50 Hz, and 200 Hz. There is a coupling relationship between the phase difference and the vibration frequency on the suspended discharge, which will lead to an inconsistency between the field intensity and each single factor. The partial discharge test results of the collision between the suspension electrode and the high-voltage electrode show that the discharge generated by vibration at 100 Hz is much higher than that at other frequencies, followed by those at 300 Hz and 50 Hz, and the discharge generated by vibration at 200 Hz is very small. When the phase difference of voltage advance vibration is between 0 and 90°, the quantity of local discharge is large. When the phase difference is between 90° and 180°, the local discharge is small.

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“…The primary focus of current studies is on simulating and conducting experiments to understand the vibration mechanism of reactors. Guo et al [1] introduced an innovative approach for calculating and analyzing core vibrations in ultra-high voltage shunt reactors. Their study revealed the relationship between voltage fluctuations and core vibration characteristics.…”

Section: Introductionmentioning

confidence: 99%

Enabling intelligent HVSR loose fault diagnosis based on vibration perception

Zhao,

Huang,

Qian

et al. 2023

J. Phys.: Conf. Ser.

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The significance of high-voltage shunt reactors (HVSRs) in ensuring the reliability of power grids is widely acknowledged. Nevertheless, the persistent mechanical vibrations experienced by HVSR can loosen vital components such as windings, iron cores, and bolt fasteners. If the mechanical loose fault cannot be detected and mitigated timely, the vibration will be further aggravated, which tends to cause additional detects such as overheating and discharge, even fire disasters. Therefore, it is essential to diagnose loose faults in high-voltage shunt reactors. This study presents a unique data-driven method that utilizes optimal vibration test location selection and a densely connected neural network (DenseNet) for diagnosing loose faults in shunt reactors. Firstly, we integrate the least square method and R-square to explore the fault sensitivity of the vibration signal collected in different locations on the external tank surface, based on which the optimal vibration test points can be determined. Then the vibration data acquired in the selected points are input into the DenseNet model to achieve high-precise loose fault detection and diagnosis for high-voltage shunt reactor. Furthermore, with test data collected from a 35 kV high-voltage shunt reactor, the diagnostic performance of the proposed method is verified and highlighted.

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Influence of voltage fluctuations on core vibration of a UHV shunt reactor

Cited by 10 publications

References 16 publications

RETRACTED: Vibration and Noise Reduction Method of 750kV Shunt Reactor Based on Optimization of Air Gap Structure

RETRACTED: Vibration and Noise Reduction Method of 750kV Shunt Reactor Based on Optimization of Air Gap Structure

Influences of the vibration frequency and phase of the core of ultra-high voltage shunt reactors on suspended discharge in oil-paper insulation

Enabling intelligent HVSR loose fault diagnosis based on vibration perception

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