High voltage insulator surface evaluation using image processing

Pernebayeva, Damira; Bagheri, Mehdi; James, Alex Pappachen

doi:10.23919/iseim.2017.8166540

Cited by 8 publications

(6 citation statements)

References 11 publications

(11 reference statements)

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“…Transmission and distribution system plays a vital role in modern day. Insulator made up of ceramic and glass is one of the components used for overhead transmission lines [1][2][3][4][5][6]. The material in the insulator provides good insulation characteristics.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Pollution on Insulators in High Voltage Transmission Line

Rani

Murthy

2022

Advances in Transdisciplinary Engineering

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This work provides the effects of pollution on insulators in high voltage transmission line. Different stress such as electrical, mechanical and environmental stress on outdoor insulator has been discussed in this paper. Comparative performance of different insulators have been provided in this paper. . An insulator constructed of ceramic and glass is one of the components used in the construction of overhead transmission lines. In the insulator, the material used to create the insulation has excellent insulating properties. However, as a result of the outside environment and atmosphere, the insulation qualities of overhead insulators gradually deteriorate and become severely reduced. Electrical stress, mechanical stress, and environmental stress are the three types of stress that can be applied to insulators in general, according to their function. Polymeric insulators, in addition to ceramic and glass insulators, are also utilized in the building of overhead insulators to keep the electricity flowing.

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Section: Introductionmentioning

confidence: 99%

“…Housing material (silicone rubber) b. Central core (Fiber reinforced plastic) c. Metal fitting Electrical equivalent model of ideal insulator and polluted insulator has been discussed in [3]. Dynamic analysis of polluted insulator and improved electrical equivalent model has been discussed in [4].…”

Section: Introductionmentioning

confidence: 99%

Effect of Pollution on Insulators in High Voltage Transmission Line

Rani

Murthy

2022

Advances in Transdisciplinary Engineering

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“…In recent years, the state monitoring and fault diagnosis technology for power equipment with modern information technology has been vigorously promoted, and many kinds of equipment operation information have been applied to various fields [ 4 ]. The researchers studied different forms of equipment condition monitoring and fault warning from the aspects of equipment images [ 5 , 6 , 7 , 8 ], electromagnetic waves [ 9 ], ultrasonic waves [ 10 , 11 ], temperature [ 12 , 13 ], pressure [ 14 ] and vibration signals [ 15 , 16 , 17 ]. However, the development of equipment fault is a slow and nonlinear process, and the influencing factors are also multi-dimensional, complex, and changeable.…”

Section: Introductionmentioning

confidence: 99%

Multiscale Entropy Feature Extraction Method of Running Power Equipment Sound

Zhai

Yang

Peng

et al. 2020

Entropy

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The equipment condition monitoring based on computer hearing is a new pattern recognition approach, and the system formed by it has the advantages of noncontact and strong early warning abilities. Extracting effective features from the sound data of the running power equipment help to improve the equipment monitoring accuracy. However, the sound of running equipment often has the characteristics of serious noise, non-linearity and instationary, which makes it difficult to extract features. To solve this problem, a feature extraction method based on the improved complementary ensemble empirical mode decomposition with adaptive noise (ICEEMDAN) and multiscale improved permutation entropy (MIPE) is proposed. Firstly, the ICEEMDAN is utilized to obtain a group of intrinsic mode functions (IMFs) from the sound of running power equipment. The noise IMFs are then identified and eliminated through mutual information (MI) and mean mutual information (meanMI) of IMFs. Next, the normalized mutual information (norMI) and MIPE are calculated respectively, and norMI is utilized to weigh the corresponding MIPE result. Finally, based on the separability criterion, the weighted MIPE results are feature-dimensionally reduced to obtain the multiscale entropy feature of the sound. The experimental results show that the classification accuracies of the method under the conditions of no noise and 5 dB reach 96.7% and 89.9%, respectively. In practice, the proposed method has higher reliability and stability for the sound feature extraction of the running power equipment.

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“…1 Isolating switch is the most frequently used device in high-voltage switchgear. 2,3 Although the operating principle and structure of isolating switch are relatively simple, it is relatively prone to failure because of large amount of use. Most of switches operate outdoors, so the equipment components can be inevitably oxidized.…”

Section: Introductionmentioning

confidence: 99%

State measurement of isolating switch using cost fusion and smoothness prior based stereo matching

Luo

et al. 2020

International Journal of Advanced Robotic Systems

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To better monitor the state of isolating switches, an efficient binocular vision-based state measurement system is proposed in this article. Two optimal cameras are selected as the vision of our inspection system. Firstly, stereo calibration and distortion rectification are performed on acquired image pair. Secondly, to recover the three-dimensional information of switch, we propose a semi-global stereo matching method by using data- and structure-driven cost volume fusion and then optimizing raw disparity map with weighted- and edge discriminated-smoothness prior. Gradient content is enforced on the weight for suppressing small-weight-accumulation problem in weak-textured regions. Besides, Hough transform with feature constraints is implemented for removing the chaotic lines and extracting center line of the switch arm. Finally, based on the center line and corresponding disparity map of the switch arm, triangulation principle is used for calculating the true angle between the switch arm and insulator such that whether or not the isolating switch is fully closed can be detected. The experimental results demonstrate that the proposed stereo matching method can achieve good performance in Middlebury v.3 data set and switch images, and the system can precisely measure the state of switches.

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High voltage insulator surface evaluation using image processing

Cited by 8 publications

References 11 publications

Effect of Pollution on Insulators in High Voltage Transmission Line

Effect of Pollution on Insulators in High Voltage Transmission Line

Multiscale Entropy Feature Extraction Method of Running Power Equipment Sound

State measurement of isolating switch using cost fusion and smoothness prior based stereo matching

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