Study on a New Combined Anti-Galloping Device for UHV Overhead Transmission Lines

Si, Jiajun; Rui, Xiaoming; Liu, Bin; Lixian, Zhou; Liu, Shengchun

doi:10.1109/tpwrd.2019.2911894

Cited by 18 publications

(5 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The damping of the vibration damper is detected based on sensors such as optical ground wire (OPGW) and an all-dielectric self-supporting (ADSS) optical cable [32]. In addition, some researchers [33] designed a rotation-free spacer damper to improve the anti-galloping ability of power lines.…”

Section: Auxiliary Equipmentmentioning

confidence: 99%

Transmission Line Vibration Damper Detection Using Deep Neural Networks Based on UAV Remote Sensing Image

Chen

Zhao

2022

Sensors

View full text Add to dashboard Cite

Vibration dampers can greatly eliminate the galloping phenomenon of overhead transmission wires caused by wind. The detection of vibration dampers based on visual technology is an important issue. The current vibration damper detection work is mainly carried out manually. In view of the above situation, this article proposes a vibration damper detection model named DamperYOLO based on the one-stage framework in object detection. DamperYOLO first uses a Canny operator to smooth the overexposed points of the input image and extract edge features, then selectees ResNet101 as the backbone of the framework to improve the detection speed, and finally injects edge features into backbone through an attention mechanism. At the same time, an FPN-based feature fusion network is used to provide feature maps of multiple resolutions. In addition, we built a vibration damper detection dataset named DamperDetSet based on UAV cruise images. Multiple sets of experiments on self-built DamperDetSet dataset prove that our model reaches state-of-the-art level in terms of accuracy and test speed and meets the standard of real-time output of high-accuracy test results.

show abstract

Section: Auxiliary Equipmentmentioning

confidence: 99%

Transmission Line Vibration Damper Detection Using Deep Neural Networks Based on UAV Remote Sensing Image

Chen

Zhao

2022

Sensors

View full text Add to dashboard Cite

show abstract

“…Te damping joint at the end of the clamp absorbs and consumes the vibration energy through the relative motion between the rubber damping components and the frame plate, so the ability of the spacer damper to suppress the vibration of the conductor is related to its vibrational energy consumption in a single vibration cycle [16]. Like most of motion modelling methods of [17,18], a single bundle conductor, a single clamp, and a frame plate are selected as a vibration system to establish the spacer equation, assuming that the frame plate is rigidly clamped and ignoring the torsional stifness of the bundle conductor itself. Te simplifed model is shown in Figure 1(b), where x c is the instantaneous amplitude of the clamp, x f is the instantaneous amplitude of the frame plate, k t is the dynamic torsional stifness of the vibration system damping structure, and h t is the dynamic damping constant of the damping structure.…”

Section: Introductionmentioning

confidence: 99%

Design and Test of Quad-Bundle Spacer Damper Based on a New Rubber Structure

Zhao

Liu

et al. 2023

Shock and Vibration

Self Cite

View full text Add to dashboard Cite

Aiming at improving the handling efficiency and acquiring the satisfactory antivibration effect and damping performance, a quad-bundle spacer damper of 500 kV extra high voltage transmission lines was designed and developed based on a new rubber structure. Firstly, a mathematical vibration model of the spacer damper was constructed, and the structures of the defect-prone parts of the spacer damper were analyzed. Then, the structure was optimized based on the defect analysis, the clamp with fast installation as well as removal and the damper joint with superior performance were designed. On this basis, a new quad-bundle spacer damper was developed. Last but not least, the handling efficiency of the new quad-bundle spacer damper was evaluated, and performance tests were conducted according to the IEC standards. The evaluation and test results show that the handling efficiency, antivibration effect, and damping performance of the new quad-bundle spacer damper are significantly improved compared with those of the regular quad-bundle spacer damper, which provides a guarantee for the safe operation of 500 kV extra high voltage transmission lines.

show abstract

“…Generally, there are three types of vibration for long-span structures caused by wind load. One is galloping [22], which is a kind of instability induced by negative aerodynamic damping [23]. For the OCL, galloping is rare to be observed in real life [24], except in some extreme conditions [25].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on the Wind Deflection of Railway Overhead Contact Line Based on Empirical Formula and Finite Element Approach

Chu

Song

Liu

2021

Shock and Vibration

View full text Add to dashboard Cite

The assessment of wind deflection of the railway overhead contact line (OCL) is of great importance to ensure the safe and reliable operation of the electrified railway. This paper performs a comparative study of the railway OCL wind deflection based on the traditional empirical formula and finite element method (FEM). Considering the geometrical nonlinearity, a nonlinear finite element approach is adopted to model the OCL. The crosswind load is applied to the OCL through an iterative procedure. The comparative study indicates that the maximum wind deflection estimated by the empirical formula is generally the same as the FEM result when the turbulence intensity is 10%. However, with more than 10% of the turbulence intensity, the empirical formula may give a risky result. Then, some coefficients are introduced to modify the empirical formula according to the FEM results. The numerical examples are presented with different OCL tension classes to verify the validation of the modified empirical formula.

show abstract

Study on a New Combined Anti-Galloping Device for UHV Overhead Transmission Lines

Cited by 18 publications

References 20 publications

Transmission Line Vibration Damper Detection Using Deep Neural Networks Based on UAV Remote Sensing Image

Transmission Line Vibration Damper Detection Using Deep Neural Networks Based on UAV Remote Sensing Image

Design and Test of Quad-Bundle Spacer Damper Based on a New Rubber Structure

A Comparative Study on the Wind Deflection of Railway Overhead Contact Line Based on Empirical Formula and Finite Element Approach

Contact Info

Product

Resources

About