Cable tension identification based on near field radiated acoustic pressure signal

Yu, Zhongru; Shao, Shuai; Liu, Nian; Zhou, Zhixiang; Feng, Lin; Du, Peng; Tang, Junyi

doi:10.1016/j.measurement.2021.109354

Cited by 13 publications

(6 citation statements)

References 31 publications

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“…23.64 × 10 3 π × 109 × 10 9 × 39.4 2 × 10 −3 mm = 0.177 mm (19) where a is the radius of the conductor cross-section. From Formula (19), elongation was only 0.177 mm after the cable conductor had been stretched, and this length could be ignored.…”

Section: Experiments 1 Test Results and Theoretical Calculationsmentioning

confidence: 99%

“…The Literature and Research Structure 2.1.1. The Literature Research on cables can be divided into various categories: cable conductors and their terminals [17][18][19][20][21][22], cable accessories [23][24][25], cable insulators and their aging, water trees, electrical trees [26][27][28], power-cable fault monitoring [29][30][31][32][33], and submarine cables [34][35][36].…”

Section: Methodsmentioning

confidence: 99%

“…We verified the two methods through physical experiments in this study for both conductors and other types of cables in this experiment. Related studies in the literature [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] are summarized in Table 1. First, we used formulas for friction force and elastic mechanics to construct two methods for calculating the interface pressure of a cable.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Method for Measuring Interface Pressure of High-Voltage Cables

et al. 2022

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In high-voltage cables, because of the close fit of their internal structures, interface pressure is generated between conductor and insulator, which affects the performance of the cable. Studies on the calculation and testing of the interfacial pressure of cable conductors are scarce because of the lack of a unified formula and the difficulty of direct measurement. As such, in this study, we devised two methods for calculating and measuring the interface pressure of cable conductors. In the first, we used two physical experimental methods. We used the friction between cable components to perform the calculation and create an experimental method for determining cable conductor interface pressure; on the basis of the equation of the pressure inside and outside a thick-walled cylinder using elasticity mechanics, we calculated the interface pressure on the basis of the measurement of the strain state of the inner and outer diameters of each layer of the cable under different assembly and stripping conditions. We verified the effectiveness of the methods through physical tests and simulations using a YJLW03 1 × 1200 high-voltage cable. Then, we used simulation software ANSYS and SolidWorks to calculate the interface pressure. With different simulation settings, we obtained results regarding interface pressure. Lastly, these simulated values were individually compared with two physical tests, and the error was calculated. Results obtained in the ANSYS environment showed that interface pressure values determined by the geometric interference normal stress, geometric interference pressure, contact interference normal stress, and contact interference pressure methods were 39.75, 36.84, 5.76, and 36.57 MPa, respectively. In SolidWorks software, we used the contact-stress and X-axis normal stress methods. Results were all 37.36 MPa. Then, simulation results and experimental results were compared, and error was calculated. The comparison showed that the X-axis orthogonal stress method was the most accurate. Errors between the X-axis orthogonal stress method and the two physical experiments were 1.5% and 0.48%. Through the above simulation and physical experiments, we determined the interface pressure between conductors and insulators in a high-voltage power cable. We obtained the cable interface pressure value through two kinds of physical experiments, and these two methods were clearly reliable. Simulation experiments showed that using SolidWorks software to simulate this problem obtained better results. Research results provide technical support and reference for the calculation and measurement of cable interface pressure and the optimization of cable performance.

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Section: Experiments 1 Test Results and Theoretical Calculationsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Method for Measuring Interface Pressure of High-Voltage Cables

et al. 2022

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“…In both approaches, the camera devices are no longer limited to a fxed point, which allows for a higher degree of fexibility in feld application. Furthermore, the acoustic radiation technique was frst employed in cable vibration measuring [104], as shown in Figure 5. Te forced cable vibration under the axial force F causes changes in near-feld radiated acoustic pressure, and the radiated acoustic pressure signal is linearly proportional to the acceleration response of vibration source, indicating the vibration response can be determined from changes in near-feld radiated acoustic pressure.…”

Section: Dynamic Response-based Cable Force Estimationmentioning

confidence: 99%

Nondestructive Testing and Health Monitoring Techniques for Structural Effective Prestress

Jia,

Zhang,

et al. 2023

Structural Control and Health Monitoring

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Prestressed structures are widely employed in bridges and large-span spatial structures, and the accurate evaluation of prestress state is of great importance for structural maintenance. This paper reviews the nondestructive testing (NDT) and health monitoring techniques for structural effective prestress. Specifically, the fiber Bragg grating (FBG) sensor-based, magnetic-elastic (ME) sensor-based, dynamic response-based, ultrasonic guided wave (UGW)-based, electromechanical impedance (EMI)-based, and electrical resistance-based methods are reviewed in this paper. Firstly, the principle, application range, and measuring accuracy of each technique are introduced and analyzed, and the benefits and limitations of each technique are summarized: The FBG sensor and ME sensor take on high measuring accuracy and have been applied in practical engineering, but they are required to be preinstalled during structural construction; the dynamic response-based method is greatly effective in cable force assessment but not suitable for prestress evaluation of prestressed concrete (PSC) structures; the UGW-based, EMI-based, and electrical resistance-based methods have shown favorable potential for prestress assessment in laboratory experiments, but their feasibility and accuracy in practical engineering need to be verified. Secondly, the challenges and discussion of each method are discussed in the following four aspects: measuring range, reliability of measuring results, stability and durability considering long-term monitoring, and cost-efficiency. Finally, a decision tree is proposed to choose the most appropriate prestress evaluation method in a specific application scenario.

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“…From the technological standpoint, non-contact techniques for data acquisition are becoming increasingly attractive for cable monitoring, because they are noninvasive and provide larger quantities of data with lower expenditure of human and instrumental resources. Among non-contact systems, laser vibration sensors [35,36], microwave remote sensing [37], acoustic radiation technology [38], and high-speed camera image processing [39,40] have proven to be very effective in recording cable vibrations for frequency-based tension identification. Such non-contact devices are mostly used for dynamic identification, whereas only a few investigations have been conducted on their use for static identification.…”

Section: Introductionmentioning

confidence: 99%