A Fast Insulator-Contour-Detection-Algorithm on Power Transmission Lines Images

2012 ◽  
Vol 201-202 ◽  
pp. 337-343 ◽  
Author(s):  
Ting Fang ◽  
Xin Jin ◽  
Xing Liu Hu ◽  
Pei Zhen Wang ◽  
Chong Dong
Keyword(s):  
Transmission Lines ◽  
Template Matching ◽  
Power Transmission ◽  
Detection Algorithm ◽  
Image Features ◽  
Contour Detection ◽  
Practical Significance ◽  
Power Transmission Lines ◽  
Time System ◽  
Real Time System

The paper proposes a novel insulator-contour-detection-algorithm on power transmission lines images. The insulator-contour-detection-algorithm will have very important academic and practical significance in helicopter or robot patrol system on power transmission lines. The physical characteristics of insulator are analyzed in detail to obtain image features of insulator, and the Hough transform based on gradient information is used to detect the ellipse on the image. After double thresholds processing to the size of ellipse, linear fitting about the center of ellipse, template matching of the center of ellipse based on hausdorff distance, the insulator ellipse is determined. The consuming time of the algorithm is about 50 to 200 ms, so the algorithm can meet the requirement of real-time system. The experiment result approves it.

scholarly journals Research on Recognition of Electricity Fittings in High Voltage Transmission Lines

2021 ◽  
Vol 257 ◽  
pp. 01074
Author(s):  
He-dong Lei ◽  
Qing-feng Gao ◽  
Dong-rui Lv
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Deep Neural Network ◽  
Power Transmission ◽  
Image Features ◽  
Power Transmission Lines ◽  
High Voltage Transmission Line ◽  
High Voltage Transmission ◽  
Inspection Robots ◽  
Identification Model

On the basis of analyzing the structure of common power fittings in high-voltage transmission lines and their image features, combined with the DNN deep neural network in machine learning, we proposed a model suitable for high-voltage transmission line inspection robots to identify the types of electric power fittings on the transmission lines. And design a fast ROI generation method suitable for recognizing fittings on power transmission lines. Then we verify the feasibility and rationality of the fitting identification model.

METHOD OF SYNTHESIS OF CLOSED-LOOP SYSTEMS OF ACTIVE SHIELDING MAGNETIC FIELD OF POWER TRANSMISSION LINES

2016 ◽  
Vol 2016 (4) ◽  
pp. 8-10 ◽  
Author(s):  
B.I. Kuznetsov ◽  
◽  
A.N. Turenko ◽  
T.B. Nikitina ◽  
A.V. Voloshko ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Transmission Lines ◽  
Closed Loop ◽  
Power Transmission ◽  
Power Transmission Lines ◽  
Closed Loop Systems ◽  
Active Shielding

scholarly journals Time-Multiplexed Self-Powered Wireless Current Sensor for Power Transmission Lines

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1561
Author(s):  
Hao Chen ◽  
Zhongnan Qian ◽  
Chengyin Liu ◽  
Jiande Wu ◽  
Wuhua Li ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Transmission Line ◽  
Transmission Lines ◽  
Power Transmission ◽  
Current Measurement ◽  
Current Sensor ◽  
Power Transmission Line ◽  
Power Transmission Lines ◽  
Current Sensing ◽  
Self Powered

Current measurement is a key part of the monitoring system for power transmission lines. Compared with the conventional current sensor, the distributed, self-powered and contactless current sensor has great advantages of safety and reliability. By integrating the current sensing function and the energy harvesting function of current transformer (CT), a time-multiplexed self-powered wireless sensor that can measure the power transmission line current is presented in this paper. Two operating modes of CT, including current sensing mode and energy harvesting mode, are analyzed in detail. Through the design of mode-switching circuit, harvesting circuit and measurement circuit are isolated using only one CT secondary coil, which eliminates the interference between energy harvesting and current measurement. Thus, the accurate measurement in the current sensing mode and the maximum energy collection in the energy harvesting mode are both realized, all of which simplify the online power transmission line monitoring. The designed time-multiplexed working mode allows the sensor to work at a lower transmission line current, at the expense of a lower working frequency. Finally, the proposed sensor is verified by experiments.

scholarly journals Decentralized Estimation of Two-port Equivalents for Power Transmission Lines

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Vedanta Pradhan ◽  
O. D. Naidu ◽  
Sinisa Zubic ◽  
Patrick Cost
Keyword(s):  
Transmission Lines ◽  
Power Transmission ◽  
Power Transmission Lines ◽  
Decentralized Estimation

Phasor estimation in power transmission lines by using the Kalman filter

2021 ◽  
Author(s):  
Ronaldo F. R. Pereira ◽  
Felipe P. Albuquerque ◽  
Luisa H. B. Liboni ◽  
Eduardo C. M. Costa ◽  
Mauricio C. de Oliveira
Keyword(s):  
Kalman Filter ◽  
Transmission Lines ◽  
Power Transmission ◽  
Power Transmission Lines ◽  
Phasor Estimation
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