Temperature Compensation Method for Infrared Detection of Live Equipment under the Interferences of Wind Speed and Ambient Temperature

Ma, Jun; Zheng, Hanbo; Sun, Yonghui; Zhang, Zhuo; Wang, Xiaohui; Ding, Guiguang; Guo, Lei; Zhang, Chaohai

doi:10.1109/tim.2021.3052003

Cited by 15 publications

(4 citation statements)

References 27 publications

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“…When the ambient wind speed is 3 m/s, the ΔT decreases to 0.5 K or below, but in the absence of wind, the ΔT of the composite insulator is greater than 1 K. Therefore, the infrared temperature measurement of the composite insulator under windy conditions may cause missed or erroneous detection. According to Table 3, the average ΔT of the decay-like insulator at 0 m/s is 35.6 K and is 19.55 K at 3 m/s. It can be seen that with the increase in ambient wind speed, the ΔT of decay-like insulators gradually decreases.…”

Section: The Influence Of Wind Speedmentioning

confidence: 99%

“…Surface contamination resulted in abnormal heating at the HV end of the composite insulators, according to Edson G et al [18]. Ma et al [19] examined the influence law of wind speed and ambient temperature on the temperature rise and used support vector machine multivariate regression (SVR) analysis to establish a temperature compensation model. The acquired fault temperature and the existing interference parameters were used as the input of the model, and the compensation temperature after eliminating the interference was obtained from the output of the model.…”

Section: Introductionmentioning

confidence: 99%

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A Comparative Study of Abnormal Heating Composite Insulators

Gao

Liu

2023

Polymers

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The abnormal heating of composite insulators on transmission lines frequently occurs, seriously threatening the power grid’s safe and stable operation. For different types of abnormal heating composite insulators, undifferentiated replacement wastes a lot of labor and material resources. This study explores the abnormal heating composite insulators under different environmental humidity and wind speed conditions. The heating and discharge of composite insulators are observed, and the heating range, heating shape, and temperature rise (ΔT) are analyzed. The abnormal heating of the sheath-aging composite insulator is related to the aging of the silicone rubber and the environmental humidity. The partial discharge caused by the core rod’s defect is the primary source of the temperature rise in the decay-like insulator. The heating range of the contaminated insulator is connected to the environmental humidity, and the ΔT increases with the salt density. The ΔT and heating range of the three types of abnormal heating increase with the ambient humidity. The heating phenomenon under low humidity is an important characteristic that distinguishes decay-like and contaminated insulators from sheath-aging insulators. Therefore, the on-site infrared inspection should be carried out in sunny and windless weather to prevent the impact of high humidity and wind speed on infrared temperature measurement.

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Section: The Influence Of Wind Speedmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Abnormal Heating Composite Insulators

Gao

Liu

2023

Polymers

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“…Currently, several methods have been developed for temperature monitoring of tumors during the PT therapy process in a contact or noncontact manner . Among them, thermocouples and fluorescent optical fiber sensors can achieved invasive temperature measurement of deep-seated tumors owing to their contact measurement characteristics, which may lead to cancer metastasis. , For the noncontact measurement method, infrared temperature measurement technology has attracted attention, benefiting from its advantages of high accuracy and resolution; , however, it can only achieve surface and superficial measurements, and it fails to obtain depth-resolved measurements owing to the strong attenuation characteristics of biological tissues to light . Ultrasonic temperature measurement technology has strong penetration, − but the accuracy of the temperature measurement is limited .…”

Section: Introductionmentioning

confidence: 99%

Quantitative 3D Temperature Rendering of Deep Tumors by a NIR-II Reversibly Responsive W-VO₂@PEG Photoacoustic Nanothermometer to Promote Precise Cancer Photothermal Therapy

et al. 2023

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Accurately monitoring the three-dimensional (3D) temperature distribution of the tumor area in situ is a critical task that remains challenging in precision cancer photothermal (PT) therapy. Here, by ingeniously constructing a polyethylene glycol-coated tungsten-doped vanadium dioxide (W-VO 2 @PEG) photoacoustic (PA) nanothermometer (NThem) that linearly and reversibly responds to the thermal field near the human-body-temperature range, the authors propose a method to realize quantitative 3D temperature rendering of deep tumors to promote precise cancer PT therapy. The prepared NThems exhibit a mild phase transition from the monoclinic phase to the rutile phase when their temperature grows from 35 to 45 °C, with the optical absorption sharply increased ∼2-fold at 1064 nm in an approximately linear manner in the near-infrared-II (NIR-II) region, enabling W-VO 2 @PEG to be used as NThems for quantitative temperature monitoring of deep tumors with basepoint calibration, as well as diagnostic agents for PT therapy. Experimental results showed that the temperature measurement accuracy of the proposed method can reach 0.3 °C, with imaging depths up to 2 and 0.65 cm in tissue-mimicking phantoms and mouse tumor tissue, respectively. In addition, it was verified through PT therapy experiments in mice that the proposed method can achieve extremely high PT therapy efficiency by monitoring the temperature of the target area during PT therapy. This work provides a potential demonstration promoting precise cancer PT therapy through quantitative 3D temperature rendering of deep tumors by PA NThems with higher security and higher efficacy.

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“…When power equipment has thermal failure, abnormal temperature will occur. Infrared temperature measurement technology is widely used in fault detection of power equipment in substations because of its advantages of noncontact, fast, reliable, and accurate measurement, which improves the effectiveness of fault diagnosis for high-voltage power equipment [3][4][5]. Figure 1 shows the instrument transformers with thermal failure in a substation.…”

Section: Introductionmentioning

confidence: 99%

Intelligent Diagnosis Method of Power Equipment Faults Based on Single‐Stage Infrared Image Target Detection

Zheng

Ping

Cui

et al. 2022

IEEJ Transactions Elec Engng

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With the rapid expansion of the scale of the power grid, the efficiency of fault diagnosis has been severely challenged by the large amount of inspection image data generated by intelligent devices such as drones and inspection robots. In order to improve the efficiency of fault diagnosis for power equipment in substations, a new method for intelligently diagnosing different types of faults in power equipment is proposed. For circuit breakers and insulators, YOLOv4 is selected as the target detection model. To improve the detection performance of the YOLOv4 model, this paper improves it: the Cross Stage Partial (CSP) structure is introduced in the Spatial Pyramid Pooling (SPP) module of the neck of the YOLOv4 model. The experimental results show that after using the optimal learning rate decay strategy, the mAP and frames per second (FPS) of the improved YOLOv4 model are better than the original YOLOv4 and PP‐YOLO model. Finally, an intelligent diagnosis terminal system for power equipment faults is developed. Through the target recognition and rapid extraction of equipment temperature, the intelligent diagnosis of thermal faults of equipment is realized. This method is especially suitable for accurate fault diagnosis of more power equipment, and has potential huge applicability in the field of power equipment diagnosis. © 2022 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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Temperature Compensation Method for Infrared Detection of Live Equipment under the Interferences of Wind Speed and Ambient Temperature

Cited by 15 publications

References 27 publications

A Comparative Study of Abnormal Heating Composite Insulators

A Comparative Study of Abnormal Heating Composite Insulators

Quantitative 3D Temperature Rendering of Deep Tumors by a NIR-II Reversibly Responsive W-VO₂@PEG Photoacoustic Nanothermometer to Promote Precise Cancer Photothermal Therapy

Intelligent Diagnosis Method of Power Equipment Faults Based on Single‐Stage Infrared Image Target Detection

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Temperature Compensation Method for Infrared Detection of Live Equipment under the Interferences of Wind Speed and Ambient Temperature

Cited by 15 publications

References 27 publications

A Comparative Study of Abnormal Heating Composite Insulators

A Comparative Study of Abnormal Heating Composite Insulators

Quantitative 3D Temperature Rendering of Deep Tumors by a NIR-II Reversibly Responsive W-VO2@PEG Photoacoustic Nanothermometer to Promote Precise Cancer Photothermal Therapy

Intelligent Diagnosis Method of Power Equipment Faults Based on Single‐Stage Infrared Image Target Detection

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Product

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Quantitative 3D Temperature Rendering of Deep Tumors by a NIR-II Reversibly Responsive W-VO₂@PEG Photoacoustic Nanothermometer to Promote Precise Cancer Photothermal Therapy