Full-Scale Reconstruction for Transmission Line Galloping Curves Based on Attitudes Sensors

Wu, Decheng; Yang, Shizhong; Lu, Tao; Cao, Hailin; Tan, Xiaoheng; Li, Jing; Qin, Wenjian

doi:10.1155/2018/1095842

Cited by 8 publications

(8 citation statements)

References 29 publications

(43 reference statements)

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“…To obtain the full galloping curves, the sensors should be installed so that the galloping may be captured as accurately as possible. A simple and reasonable choice is that the sensors should be evenly placed along the span direction [21], which can be in line with the suspension characteristics of the transmission line. However, the galloping status varies with factors such as wind angle, velocity, and icing thickness, and it will give rise to different galloping loops.…”

Section: Sensor Placement Optimizationmentioning

confidence: 99%

“…They are critical for verifying anti-galloping designs, developing galloping prevention plans, and determining the galloping effect. In [21], a full reconstruction method for transmission line galloping curves was presented based on attitude sensors. According to the Nyquist sampling theorem, to achieve high reconstruction performance, the sensors should be twice as many as the galloping loops.…”

Section: Introductionmentioning

confidence: 99%

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Energy-Efficient Reconstruction Method for Transmission Lines Galloping With Conditional Generative Adversarial Network

Cao

et al. 2020

IEEE Access

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Conductor galloping seriously threatens the safe operation of power systems and may lead to various damages such as wire fractures or tower collapses and large-scale grid breakdowns. Real-time galloping data are important in the mechanism and effect analysis of conductor dancing prevention; moreover, they are critical for verifying anti-galloping designs and developing galloping prevention plans. However, owing to the limitations of using sensors on cables, obtaining complete galloping data is an ill-posed and challenging problem. In this study, a novel curve reconstruction method using a conditional generative adversarial network (GAN), CR-CGAN, is proposed for fully synthesizing transmission line galloping curves. We use the modeling capabilities of the recently introduced GAN by imposing additional constraints to achieve full reconstruction of the galloping curves. Moreover, we introduce a novel design in the generator-discriminator pair for improved results and a new refined loss function to enhance details. The generator uses an autoencoder with skip connections, and the inception module is used to capture different scales of spatiotemporal correlation. The discriminator is designed to use global information to determine the reliability and smoothness of the reconstructed curve. The refined loss function is aimed at reducing artifacts introduced by the GAN and ensures better reconstruction quality. A single-degree-offreedom model is constructed to verify the effectiveness and feasibility of the proposed method. Simulation results demonstrate that the proposed method can accurately reconstruct galloping curves with limited use of sensors, thus meeting the energy efficiency demands of the monitoring system.

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Section: Sensor Placement Optimizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy-Efficient Reconstruction Method for Transmission Lines Galloping With Conditional Generative Adversarial Network

Cao

et al. 2020

IEEE Access

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“…Remarkable achievements have been made from a lot of research on galloping mechanisms [4][5][6], experiments [7][8][9][10], numerical simulation [11][12][13][14][15][16][17][18][19], antigalloping devices, and field monitoring [20] carried out by researchers around the world. In terms of galloping numerical simulation, Desai et al [12,13] decomposed galloping into lateral motion and torsional motion, established a two-degree-of-freedom galloping model, and analysed the galloping response of the bundled transmission line.…”

Section: Introductionmentioning

confidence: 99%

Study on Adaptive Excitation System of Transmission Line Galloping Based on Electromagnetic Repulsive Mechanism

Ruan

Zhang

Cai

et al. 2021

Shock and Vibration

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Due to the uncontrollable weather conditions, it is difficult to carry out the controllable prototype test to study fatigue damage of transmission tower and armour clamp and the effect evaluation of antigalloping device under actual transmission line galloping. Considering the geometric nonlinearity of the transmission line system, this study proposed an adaptive excitation method to establish the controllable transmission line galloping test system based on the Den Hartog vertical oscillation mechanism. It can skip the complicated process of nonlinear aerodynamic force simulation. An electromagnetic repulsion mechanism based on the eddy current principle was designed to provide periodic excitation for the conductor system according to the adaptive excitation method. The finite element model, including conductor, insulator string, and electromagnetic mechanism, was established. Newmark method and fourth-order Runge-Kutta algorithm were used to complete the integrated simulation calculation. By comparing with the measured data record of the actual transmission line galloping test, the results show that the proposed adaptive galloping excitation system can effectively reconstruct the key characteristics of the actual transmission line galloping, such as amplitude, frequency, galloping mode, and dynamic tension, and make the galloping state controllable. Thus, a series of research about transmission line galloping with practical engineering significance can be carried out.

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“…Stoyanoff used a 3-DOF model to study the stability of cable under wind load [16]. Wu et al proposed a new full-scale reconstruction method of transmission line curve based on attitude sensor [17].…”

Section: Introductionmentioning

confidence: 99%

Galloping Stability and Wind Tunnel Test of Iced Quad Bundled Conductors considering Wake Effect

Liu

Zou

Wu³

et al. 2020

Discrete Dynamics in Nature and Society

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A new quad bundle conductor galloping model considering wake effect is proposed to solve the problem of different aerodynamic coefficients of each subconductor of iced quad bundle conductor. Based on the quasistatic theory, a new 3-DOF (three degrees of freedom) galloping model of iced quad bundle conductors is established, which can accurately reflect the energy transfer and galloping of quad bundle conductor in three directions. After a series of formula derivations, the conductor stability judgment formula is obtained. In the wind tunnel test, according to the actual engineering situation, different variables are set up to accurately simulate the galloping of iced quad bundle conductor under the wind, and the aerodynamic coefficient is obtained. Finally, according to the stability judgment formula of this paper, calculate the critical wind speed of conductor galloping through programming. The dates of wind tunnel test and calculation in this paper can be used in the antigalloping design of transmission lines.

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Full-Scale Reconstruction for Transmission Line Galloping Curves Based on Attitudes Sensors

Cited by 8 publications

References 29 publications

Energy-Efficient Reconstruction Method for Transmission Lines Galloping With Conditional Generative Adversarial Network

Energy-Efficient Reconstruction Method for Transmission Lines Galloping With Conditional Generative Adversarial Network

Study on Adaptive Excitation System of Transmission Line Galloping Based on Electromagnetic Repulsive Mechanism

Galloping Stability and Wind Tunnel Test of Iced Quad Bundled Conductors considering Wake Effect

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