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Articles de revues sur le sujet « Monitoring overhead »

Auteur : Grafiati
Publié le 9 mars 2023
Mis à jour le 10 mars 2023

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1

Sugama, Yoji, Toshihide Kishi et Nobuyuki Ishioka. « 1B31 Development of an Overhead Contact Line Equipment Monitoring System(Condition Monitoring-Vehicle) ». Proceedings of International Symposium on Seed-up and Service Technology for Railway and Maglev Systems : STECH 2015 (2015) : _1B31–1_—_1B31–9_. http://dx.doi.org/10.1299/jsmestech.2015._1b31-1_.

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Huang, Xiaowan, Justin Seyster, Sean Callanan, Ketan Dixit, Radu Grosu, Scott A. Smolka, Scott D. Stoller et Erez Zadok. « Software monitoring with controllable overhead ». International Journal on Software Tools for Technology Transfer 14, no 3 (29 décembre 2010) : 327–47. http://dx.doi.org/10.1007/s10009-010-0184-4.

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Dobrynin, E. V., T. V. Boshkareva et O. V. Tabakov. « An Overhead Line Voltage Monitoring System ». Russian Electrical Engineering 91, no 3 (mars 2020) : 191–94. http://dx.doi.org/10.3103/s1068371220030074.

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Kumar, Naveen, Bruce R. Childers et Mary Lou Soffa. « Low overhead program monitoring and profiling ». ACM SIGSOFT Software Engineering Notes 31, no 1 (janvier 2006) : 28–34. http://dx.doi.org/10.1145/1108768.1108801.

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Liu, Dongbo, et Zhichao Liu. « An Adaptive Cloud Monitoring Framework Based on Sampling Frequency Adjusting ». International Journal of e-Collaboration 16, no 2 (avril 2020) : 12–26. http://dx.doi.org/10.4018/ijec.2020040102.

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In a cloud platform, the monitoring service has become a necessary infrastructure to manage resources and deliver desirable quality-of-service (QoS). Although many monitoring solutions have been proposed in recent years, how to mitigate the overhead of monitoring service is still an opening issue. This article presents an adaptive monitoring framework, in which a traffic prediction model is introduced to estimate short-term traffic overhead. Based on this prediction model, a novel algorithm is proposed to dynamically change the sampling frequency of sensors so as to achieve better tradeoffs between monitoring accuracy and overhead. Also, a monitoring topology optimization mechanism is incorporated which enables to make more cost-effective decisions on monitoring management. The proposed framework is tested in a realistic cloud and the results indicate that it can significantly reduce the communication overhead when performing monitoring tasks for multiple tenants.
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Popiolek, Pedro Freire, Karina dos Santos Machado et Odorico Machado Mendizabal. « Low overhead performance monitoring for shared infrastructures ». Expert Systems with Applications 171 (juin 2021) : 114558. http://dx.doi.org/10.1016/j.eswa.2020.114558.

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Hussain, T. M., T. N. Saadawi et S. A. Ahmed. « Overhead infrared sensor for monitoring vehicular traffic ». IEEE Transactions on Vehicular Technology 42, no 4 (1993) : 477–83. http://dx.doi.org/10.1109/25.260764.

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Feng, Chao, Rui Yang, Xianhui Cao, Weike Liu, Shuyuni He, Kejian Ouyang, Zhiwei Jia, Yi Xie et Jun Wang. « Online monitoring and early warning technology for the status of earth wire for overhead line ». Journal of Physics : Conference Series 2196, no 1 (1 février 2022) : 012020. http://dx.doi.org/10.1088/1742-6596/2196/1/012020.

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Abstract Overhead lines for wind power transmission in the southern region have the characteristics of large tower-line elevation, across thick ice areas, harsh natural environments, and difficult maintenance. Unpredictable line breakage accidents often occur, affecting the stability of the social power supply. This paper designs and introduces a technology based on intelligent perception technique for online monitoring of the earth wire, which can realize long-term real-time online monitoring of the state of the earth wire of overhead lines and solve the problem of line monitoring from wind power transmission and fault inspection and troubleshooting. Now the test and monitoring work of an overhead transmission line has been completed during the ice period, and the test results show that the technology has good monitoring performance.
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Listyuhin, V. A., E. A. Pecherskaya, O. A. Timokhina et V. V. Smogunov. « System for monitoring the parameters of overhead power lines ». Journal of Physics : Conference Series 2086, no 1 (1 décembre 2021) : 012059. http://dx.doi.org/10.1088/1742-6596/2086/1/012059.

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Abstract The analysis of disturbances (accidents) on overhead power transmission lines and methods and means of the overhead power transmission lines parameters monitoring was carried out. It is shown that the most promising direction for ensuring the required indicators of the reliability of power supply is the development and implementation of information and measurement systems at the facilities of the power supply network complex. The structure of an intelligent information-measuring system for measuring parameters characterizing the state of wires, external factors influencing the state of power lines is proposed. The proposed decision support system will make it possible to promptly identify defective sections of overhead lines, increase the level of technological management of electrical networks.
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Mohapatra, Seli, Prafulla Kumar Behera, Prabodh Kumar Sahoo, Manoj Kumar Ojha, Chetan Swarup, Kamred Udham Singh, Saroj Kumar Pandey, Ankit Kumar et Anjali Goswami. « Modified Ring Routing Protocol for Mobile Sinks in a Dynamic Sensor Network in Smart Monitoring Applications ». Electronics 12, no 2 (5 janvier 2023) : 281. http://dx.doi.org/10.3390/electronics12020281.

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The stationary hierarchical network faces considerable challenges from hotspots and faster network breakdowns, especially in smart monitoring applications. As a solution to this issue, mobile sinks were recommended since they are associated with huge and balanced ways to transfer data and energy across the network. Again, due to the mobile sink node advertisement around the network latency and the energy utilization overheads introduced across the network, ring routing reduces the control overhead while preserving the benefits of the mobile sink, thereby optimizing the energy and improving the network life span. Consequently, we suggested a novel, distributed advanced ring routing strategy, in this work, for the mobile wireless sensor network. Extensive simulations and performance evaluation, in comparison to previous distributed mobile approaches, reveal a 37% and 40% boost in the network throughput and end-to end delay, respectively. Additionally, the lifespan of a network is determined by the control overhead and energy demand.
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Zhou, Hua Min, Hao Wu, Yu Sheng Quan et Zi Jian Wang. « New Method of Overhead Line Icing Online Monitoring ». Applied Mechanics and Materials 672-674 (octobre 2014) : 1369–72. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.1369.

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Present icing monitoring system mainly depends on detecting the meteorological parameters and dynamic characteristics of the structure of the overhead icing line. However, all these systems need additional equipments for data collection. This paper provides a new method based on voltage and current of both ends of the line and discriminates the icing region and its severity via the change of active power and reactive power. It requires the voltage and current serving as signal source which is provided by the data collecting device on the both ends of lines. In this way it can accomplish the Monitoring task of icing transmission.
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Albizu, Igor, Elvira Fernandez, Pablo Eguia, Esther Torres et Angel Javier Mazon. « Tension and Ampacity Monitoring System for Overhead Lines ». IEEE Transactions on Power Delivery 28, no 1 (janvier 2013) : 3–10. http://dx.doi.org/10.1109/tpwrd.2012.2213308.

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Wu, Yik-Chung, Long-Fung Cheung, King-Shan Lui et Philip W. T. Pong. « Efficient Communication of Sensors Monitoring Overhead Transmission Lines ». IEEE Transactions on Smart Grid 3, no 3 (septembre 2012) : 1130–36. http://dx.doi.org/10.1109/tsg.2012.2186596.

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SAKAI, Yoshiro, et Masayuki KITAZAWA. « Automated Vehicle Operation Characteristics with Overhead View Monitoring. » Transactions of the Japan Society of Mechanical Engineers Series C 62, no 601 (1996) : 3508–15. http://dx.doi.org/10.1299/kikaic.62.3508.

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Smerdin, Aleksandr, Elena Butenko, Mikhail Mikhailov et Victor Philippov. « Improve hardware facilities and work algorithms of overhead contact line remote monitoring systems ». E3S Web of Conferences 363 (2022) : 01048. http://dx.doi.org/10.1051/e3sconf/202236301048.

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An autonomous diagnostic measuring device, that allows to reduce expenses for the maintenance and the need for highly qualified personnel, is proposed in the article. The described algorithm of the work of the measuring system allows setting pre-failure conditions of an overhead contact line during exploitations of the software complex. The Installation scheme of the measuring complex on an overhead contact line equipment and the functional scheme of the software and hardware complex are described. The experimental dependence of the vibration frequency on the contact wire tension is defined for various overhead contact line spans. The limits of the variation of the vibration frequency for various combinations of overhead contact line parameters are defined.
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Liu, Zhi Ming, Zhi Guo Zhang et Lu Ming Li. « Two Kinds of Models Based on Fiber Grating Sensing Technology to Calculate Overhead Lines Sag and their Performance Comparison ». Advanced Materials Research 1044-1045 (octobre 2014) : 523–26. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.523.

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This paper is for real-time monitoring sag problem of overhead lines, modeling two kinds of models with the state equation of catenary line and parabolic method, which are based on fiber grating sensing technology and take advantage of the conversion relationship of overhead line length between different states. The performance comparative analysis is carried out between the two models and currently relatively mature angle method. Experimental measuring results show that under the same conditions, the monitoring results of two models are very near to the monitoring results of angle method. But relatively speaking, monitoring results of the catenary model are more accurate. The accuracy of models can meet the project requirements and two models both can monitor overhead lines sag effectively in real time.
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GONZALEZ CAGIGAL, MIGUEL ANGEL, JOSE ANTONIO ROSENDO MACIAS, ALFONSO BACHILLER SOLER, LUCIA MATEO SANCHEZ et ROBERTO ALVARO HERMANA. « DYNAMIC LINE RATING IN OVERHEAD TRANSMISSION LINES. MONITORING METHODS AND FIELD APPLICATION ». DYNA DYNA-ACELERADO (19 décembre 2022) : [ 7 pp]. http://dx.doi.org/10.6036/10729.

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This paper presents different methods for overhead transmission line monitoring and the calculation of dynamic line rating. Some of these techniques are based on the reading or the prediction of the whole set of meteorological variables involved in the corresponding equations, whereas other methods use direct or indirect measurements of the conductor temperature. Additionally, a correction method will be described for incomplete monitoring situations. Finally, a real case study is presented for a 220-kV overhead line, where a double monitoring technique is considered for the calculation of the dynamic line rating, with a remarkable improvement in the utilization of the assets, compared to the seasonal rating. Keywords: Dynamic line rating, overhead transmission lines, grid operation and planning, electric power system monitoring.
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Liu, Zhi Ming, Zhi Guo Zhang et Lu Ming Li. « Research on Monitoring Ice Thickness of Overhead Lines Based on FBG Sensor and Parabolic Method ». Advanced Materials Research 1044-1045 (octobre 2014) : 854–57. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.854.

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This paper is for real-time monitoring ice thickness problem of overhead lines, modeling the sag difference monitoring model, which is based on fiber Bragg grating (FBG) sensing technology and parabolic method. The model takes advantage of the overhead line sag difference constant of two monitoring points, and achieves absolute stress change values, which effectively offset various factors, such as the wind load and thermal expansion and contraction, in the impact of the model. The performance comparative analysis is carried out between the results of the model and synchronous monitoring results of vernier caliper. Experimental measuring results show that under the same conditions, the similarity of results between two methods is very high. The accuracy of monitoring results of the model can meet the project requirements and it can monitor ice thickness of overhead lines effectively in real time.
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19

Sadykov, M. F., D. A. Yaroslavsky, D. A. Ivanov, V. A. Tyurin, T. G. Galiyeva et M. P. Goryachev. « Inclinometric method for determining the mechanical state of an overhead power transmission line ». E3S Web of Conferences 124 (2019) : 05022. http://dx.doi.org/10.1051/e3sconf/201912405022.

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Mechanical deformations when a wire is stretched causes its rotation around its axis, which allows obtaining additional information about the wire behavior in an overhead transmission line and considering it no longer as a group of sections from one span but as a whole interconnected section with redistribution of mechanical loads between spans. To determine the tensile strength of wire by its torsion, a method for determining the mechanical parameters of an overhead transmission line was developed. It is based on the inclinometric method and the theory of force calculation of steel ropes. This technique takes into account the torsion, the angle of inclination and the wire temperature. The technique is implemented in the system for monitoring the status of overhead power lines. It takes into account the torsion angle of the wire and helps to prevent emergencies on the overhead power line by determining the tensile strength of the wire, checking for defects in wires of the overhead power line and defects in the suspension armature. The monitoring system includes control devices, data collection and data processing center, a dispatcher software package. Control devices are installed directly on the wire/ground wire of an overhead power line and are used to measure the angle of rotation, the angle of inclination and the wire temperature. The data collection and data processing station processes them according to the developed methodology in specialized software. The system for monitoring the status of overhead power lines based on the inclinometric method helps to prevent emergencies and reduce the economic costs of maintaining and restoring overhead power lines.
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Yang, Xiaodong, Wanting Xi, Aijia Chen et Caifen Wang. « An environmental monitoring data sharing scheme based on attribute encryption in cloud-fog computing ». PLOS ONE 16, no 9 (30 septembre 2021) : e0258062. http://dx.doi.org/10.1371/journal.pone.0258062.

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Environmental monitoring plays a vital role in environmental protection, especially for the management and conservation of natural resources. However, environmental monitoring data is usually difficult to resist malicious attacks because it is transmitted in an open and insecure channel. In our paper, a new data sharing scheme is proposed by using attribute-based encryption, identity-based signature and cloud computing technology to meet the requirements of confidentiality, integrity, verifiability, and unforgerability of environmental monitoring data. The monitoring equipment encrypts the monitored environmental data and uploads it to the environmental cloud server. Then, monitoring users can request access to the environmental cloud server. If the monitoring user meets the access policy, the plaintext is finally obtained through the fog node decryption. Our proposal mainly uses attribute-based encryption technology to realize the privacy protection and fine-grained access control of monitoring data. The integrity and unforgeability of the monitoring data are ensured by the digital signature. In addition, outsourcing computing technology saves the computing overhead of monitoring equipment and monitoring users. The security analysis illustrates that our proposal can achieve security purposes. Finally, the performance of our proposal and related schemes is evaluated from the aspects of communication overhead and computing overhead. The results indicate that our proposal is secure and efficient in environmental monitoring.
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Yang, Zhiwang, Nikola Zivlak, Ming Xu et Marko Ljubicic. « Study on overhead transmission line on-line monitoring technology ». Thermal Science 20, suppl. 2 (2016) : 383–91. http://dx.doi.org/10.2298/tsci151214024y.

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paper introduces a new idea for overhead transmission line online monitoring. The basis of the paper has been developed upon years of research conducted by power engineers, and a new advanced transmission line safe operation monitoring system is proposed successfully. Furthermore, we used artificial neural network(ANN) for diagnosis examples, to prove the feasibility and effectiveness of the advanced transmission line safe operation system.
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Panteleev, V. I., et A. V. Maleev. « Monitoring of ice formation of overhead power line wires ». Journal of Physics : Conference Series 1889, no 5 (1 avril 2021) : 052030. http://dx.doi.org/10.1088/1742-6596/1889/5/052030.

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Ashraf Balametov, Ashraf Balametov, et Tarana Isaeva Tarana Isaeva. « SOFTWARE FOR MONITORING AC CORONA EFFECTS OF OVERHEAD LINES ». PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 20, no 09 (14 septembre 2022) : 04–14. http://dx.doi.org/10.36962/pahtei20092022-04.

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The issues of environmental impact of high-voltage transmission lines are becoming relevant in connection with the development of electrical networks of high voltage 110, 220, 330 kV, extra-high voltage (EHV) 500-750 kV and ultra-high voltage 1150 kV. The harmful effect of electric and magnetic fields on living organisms and, first of all, on humans, manifests itself only at very high voltages in the wires of the overhead line (OH) phases, and is dangerous when working under voltage. The direct influence of the electromagnetic field of lines on a person is associated with an effect on the cardiovascular, central nervous systems and other organs. The harmful effects of a person's stay in a strong electric field depend on the strength of the field and on the duration of its exposure. Software has been developed for modeling electromagnetic compatibility, characteristics of power losses to the corona from the voltage impact on the environment. The results of simulation of corona losses are presented on the example of a 500 kV overhead line, electric field voltage and active energy losses due to radio interference. Keywords: environmental impact, overhead power lines, electric field strength, corona losses, radio interference, acoustic noise, electromagnetic compatibility
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Douglass, Dale, William Chisholm, Glenn Davidson, Ian Grant, Keith Lindsey, Mark Lancaster, Dan Lawry et al. « Real-Time Overhead Transmission-Line Monitoring for Dynamic Rating ». IEEE Transactions on Power Delivery 31, no 3 (juin 2016) : 921–27. http://dx.doi.org/10.1109/tpwrd.2014.2383915.

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Thomas, Johnson J., Sebastian Fischmeister et Deepak Kumar. « Lowering overhead in sampling-based execution monitoring and tracing ». ACM SIGPLAN Notices 47, no 5 (18 mai 2012) : 101. http://dx.doi.org/10.1145/2345141.1967692.

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Thomas, Johnson J., Sebastian Fischmeister et Deepak Kumar. « Lowering overhead in sampling-based execution monitoring and tracing ». ACM SIGPLAN Notices 46, no 5 (11 avril 2011) : 101–10. http://dx.doi.org/10.1145/2016603.1967692.

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Aggarwal, R. K., A. T. Johns, J. A. S. B. Jayasinghe et W. Su. « An overview of the condition monitoring of overhead lines ». Electric Power Systems Research 53, no 1 (janvier 2000) : 15–22. http://dx.doi.org/10.1016/s0378-7796(99)00037-1.

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Zavoda, Francisc, Ernie Rodriguez et George Fofeldea. « Underground and overhead monitoring systems for MV distribution networks ». CIRED - Open Access Proceedings Journal 2017, no 1 (1 octobre 2017) : 477–80. http://dx.doi.org/10.1049/oap-cired.2017.1130.

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Listyukhin, V. A., E. A. Pecherskaya, O. A. Safronova et D. V. Artamonov. « Systematization and monitoring of quality parameters of overhead power transmission lines functioning ». IOP Conference Series : Earth and Environmental Science 990, no 1 (1 février 2022) : 012058. http://dx.doi.org/10.1088/1755-1315/990/1/012058.

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Abstract On the basis of quality control methods, the analysis of the causes of technological disturbances (accidents) on overhead power lines was carried out. In particular, the Ishikawa diagram, the Pareto diagram were developed, which made it possible to systematize the main causes of technological violations. The necessity of monitoring the indicators of the reliability of the functioning of overhead power transmission lines by means of information-measuring systems has been substantiated. The structure of an information-measuring system for monitoring parameters that have a negative impact on the functioning quality of overhead power transmission lines is proposed. The proposed system is aimed at ensuring the reliability of the electrical networks operation and improving the quality indicators of services provided to consumers for the transmission of electrical energy.
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Rantala, Ville, Teijo Lehtonen, Pasi Liljeberg et Juha Plosila. « Analysis of Monitoring Structures for Network-on-Chip ». International Journal of Embedded and Real-Time Communication Systems 2, no 1 (janvier 2011) : 49–67. http://dx.doi.org/10.4018/jertcs.2011010103.

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Monitoring services are essential for advanced, reliable NoC systems. They should support traffic management, system reconfiguration and fault detection to enable optimal performance and reliability of the system. The paper presents a thorough description of NoC monitoring structures and studies earlier works. A distributed monitoring structure is proposed and compared against the structures presented in previous works. The proposed distributed network monitoring system does not require centralized control, is fully scalable and does not cause significant traffic overhead to the network. The distributed structure is in line with the scalability and flexibility of the NoC paradigm. The paper studies the monitoring structure features and analyzes traffic overhead, monitoring data diffusion, cost and performance. The advantages of distributed monitoring are found evident and the limitations of the structure are discussed.
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Quan, Yu Sheng, Enze Zhou, Guang Chen et Xin Zhao. « New Methodology of On-Line Monitoring for Transmission Line Galloping ». Advanced Materials Research 805-806 (septembre 2013) : 867–70. http://dx.doi.org/10.4028/www.scientific.net/amr.805-806.867.

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When the overhead transmission line is galloping, a variety of natural disasters occur on the role of the natural conditions, the vibration of conductor is one of the more serious harm to the power system. Over the past decade, as the construction of EHV and UHV, wire cross-section, tension, suspension height and span of overhead transmission lines are increasing, and hence the number of conductor vibration is significantly increased. Vibration in a large scale will led to frequent tripping or even broken line or tower collapses, which cause large area power failures and impact security and stability operation. Online monitoring method for overhead transmission line dancing is mostly needed to add additional equipment, however, once situated on the route environment overlying ice or high winds and other inclement weather, online monitoring is difficult to achieve. This paper presents a method, which is made correlation analysis based on the voltage and current acquired from both ends of the transmission lines, online monitoring of line galloping can be achieved.
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Minullin, Renat, et Ilshat Fardiev. « The Mutual Influence of Signals from the Location Monitoring Equipment and Technological Communication in the High-Frequency Path of Power Transmission Line ». International Journal of Engineering & ; Technology 7, no 4.38 (3 décembre 2018) : 355. http://dx.doi.org/10.14419/ijet.v7i4.38.24500.

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The paper describes the main characteristics of equipment used for technological communication by means of overhead electric transmission lines: high-frequency relay protection, command transmission of emergency control, high-frequency communication for the transmission of telemechanics and telephony signals, as well as equipment for a location equipment for monitoring the condition of electric transmission lines. The results of experimental studies on the mutual influence of the signals from the location monitoring equipment and technological communication in the high-frequency path of overhead transmission lines are presented. It shows a lack of effect of signals from location monitoring equipment on the work of technological communication equipment. Methods are proposed to reduce the influence of technological communication signals on the operation of location equipment: the method of signal accumulation and the method of digital filtering of signals. Analysis of the results of joint operation of the location monitoring equipment and high-frequency communication equipment under various conditions and operating modes on operating 35-330 kV overhead lines confirms their full compatibility.
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Temnikov, A., L. Chernenskii, O. Belova, N. Lysov et T. Kivshar. « Application of Artificial Thunderstorm Cell for Investigation of Effect of Incomplete Upward Discharges on Functioning of Concentrated Model Elements of Overhead Transmission Line Monitoring Systems ». Bulletin of Science and Practice 7, no 8 (15 août 2021) : 241–52. http://dx.doi.org/10.33619/2414-2948/69/27.

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The results of a study using an artificial thunderstorm cell of the possible influence of incomplete ascending discharges from concentrated model elements of overhead line monitoring systems on their functioning in the electric field of a thundercloud and/or lightning are presented. It is shown that ascending incomplete discharges (streamers and/or leaders) are formed from the model elements of the overhead line monitoring system (sensors, receiving and transmitting devices of a concentrated type), which can affect the functioning of such devices, including due to the fact that frequencies close to the operating frequencies of the elements of the overhead line monitoring system are present in the spectrum of their currents. It is established that the spectral characteristics of incomplete streamer and leader discharges formed from model elements of sensors and of receiving and transmitting devices of the monitoring system under the influence of an artificial lightning cell include frequency ranges close to the frequency ranges of analog-to-digital converters of sensors and data transmission devices over a high-frequency channel of concentrated monitoring systems. The essential role of the streamer corona on the formation of the ultrahigh-frequency component of the current pulse of incomplete discharges is revealed. The obtained results can help to ensure lightning protection of monitoring systems in a real thunderstorm situation.
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Shilin, Alexandr, Alexey Shilin, Sergey Dementyev et Nadezhda Kuznetsova. « Device for contactless ice buildup monitoring of overhead power line wires ». Energy Safety and Energy Economy 3 (juin 2021) : 5–11. http://dx.doi.org/10.18635/2071-2219-2021-3-5-11.

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Ice buildup monitoring is essential to prevent wire breakage on overhead power lines. Conventional telemetry systems which are based on load cell sensors have some drawbacks as reflected in this paper. We suggest an innovative device for contactless ice buildup monitoring of overhead power line wires video recording the power line clearance. A specific algorithm for detecting the lowest point of wire sag has been provided. Also, we analyze a possibility of indirect contact sensor-free measurements of a wire temperature when the wire is being covered by icy deposits. A specific buildup type can be determined comparing a dew point and desublimation point as shown in this paper.
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Fan, Fei, Gongping WU, Man Wang, Qi Cao et Song Yang. « Robot Delay-Tolerant Sensor Network for Overhead Transmission Line Monitoring ». Applied Sciences 8, no 6 (23 mai 2018) : 847. http://dx.doi.org/10.3390/app8060847.

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Frumuselu, D., et A. Manolache. « Condition monitoring of operational overhead line towers using strain gauges ». Insight - Non-Destructive Testing and Condition Monitoring 50, no 12 (décembre 2008) : 695–98. http://dx.doi.org/10.1784/insi.2008.50.12.695.

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Dai, Lili, Yongli Zhu et Zehui Liang. « Mechanics Analysis of Overhead Transmission Lines Based On-line Monitoring ». Open Journal of Applied Sciences 03, no 02 (2013) : 1–4. http://dx.doi.org/10.4236/ojapps.2013.32b001.

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WATANAKEESUNTORN, Wassapon, Keichi TAKAHASHI, Chawanat NAKASAN, Kohei ICHIKAWA et Hajimu IIDA. « Opimon : A Transparent, Low-Overhead Monitoring System for OpenFlow Networks ». IEICE Transactions on Communications E105.B, no 4 (1 avril 2022) : 485–93. http://dx.doi.org/10.1587/transcom.2021ebp3083.

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Blinov, Ihor V., Ievhen V. Parus et Serhii Ie Tankevych. « OPTIMIZATION OF FAULT INDICATORS SETTING FOR OVERHEAD POWER LINES MONITORING ». Electronics and Communications 22, no 1 (28 février 2017) : 50–57. http://dx.doi.org/10.20535/2312-1807.2017.22.1.76577.

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Usuda, Takayuki, Mitsuru Ikeda et Yoshitaka Yamashita. « 143 Pantograph Contact Force Monitoring Method in Overhead Catenary System ». Proceedings of the Dynamics & ; Design Conference 2009 (2009) : _143–1_—_143–6_. http://dx.doi.org/10.1299/jsmedmc.2009._143-1_.

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Cai, Changsong, Junhua Wang, Hang Jing, Fan Zhang, Pengcheng Zhang, Zhijian Fang et Ying‐Guo Zhou. « Universal wireless powered terminals for robust overhead transmission line monitoring ». IET Power Electronics 12, no 14 (30 octobre 2019) : 3739–48. http://dx.doi.org/10.1049/iet-pel.2019.0206.

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Akulichev, Vitaly, Valery Nepomnyashchy, Sergey Visich, Mikhail Panarin et Anna Maslova. « Mathematical model of a remote monitoring module by wire temperature of an overhead power line ». Energy Safety and Energy Economy 3 (juin 2021) : 46–51. http://dx.doi.org/10.18635/2071-2219-2021-3-46-51.

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In continuation of the previously published research results (Energy Safety and Energy Economy, iss. 2, 2021), we have developed wire temperature-based mathematical models for overhead power line monitoring. Mathematical models simulate allowable amperage load considering the temperature and an allowable wire sag considering the temperature and amperage. The proposed mathematical models became a base for overhead power line remote control tools being currently tested at power utility companies.
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Lazaropoulos, Athanasios G. « Wireless Sensor Network Design for Transmission Line Monitoring, Metering, and Controlling : Introducing Broadband over Power Lines-Enhanced Network Model (BPLeNM) ». ISRN Power Engineering 2014 (4 juin 2014) : 1–22. http://dx.doi.org/10.1155/2014/894628.

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This paper introduces the broadband over power lines-enhanced network model (BPLeNM) that is suitable for efficiently delivering the generated data of wireless sensor networks (WSNs) of overhead high-voltage (HV) power grids to the substations. BPLeNM exploits the high data rates of the already installed BPL networks across overhead HV grids. BPLeNM is compared against other two well-verified network models from the relevant literature: the linear network model (LNM) and the optimal arrangement network model (OANM). The contribution of this paper is threefold. First, the general mathematical framework that is necessary for describing WSNs of overhead HV grids is first presented. In detail, the general mathematical formulation of BPLeNM is proposed while the existing formulations of LNM and OANM are extended so as to deal with the general case of overhead HV grids. Based on these general mathematical formulations, the general expression of maximum delay time of the WSN data is determined for the three network models. Second, the three network models are studied and assessed for a plethora of case scenarios. Through these case scenarios, the impact of different lengths of overhead HV grids, different network arrangements, new communications technologies, variation of WSN density across overhead HV grids, and changes of generated WSN data rate on the maximum delay time is thoroughly examined. Third, to assess the performance and the feasibility of the previous network models, the feasibility probability (FP) is proposed. FP is a macroscopic metric that estimates how much practical and economically feasible is the selection of one of the previous three network models. The main conclusion of this paper is that BPLeNM defines a powerful, convenient, and schedulable network model for today’s and future’s overhead HV grids in the smart grid (SG) landscape.
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Jia, Yue. « Design of Sports Training System and Motion Monitoring and Recognition under Wireless Sensor Network ». Mobile Information Systems 2021 (14 octobre 2021) : 1–13. http://dx.doi.org/10.1155/2021/3104772.

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In conventional sports training, coaches record and observe athletes' sports data and judge whether it is reasonable based on their own experience. This qualitative analysis method is highly subjective, has large errors, and is susceptible to interference. To solve the above problems, the design of the sports training system under the wireless sensor network and the research of movement monitoring and recognition become very important. This article aims to study the design of sports training system and the monitoring and recognition of actions under the wireless sensor network technology. This paper simulates the implementation of the proposed data collection protocol and the two basic protocols, the direct transfer algorithm and the flooding algorithm, and compares the protocol proposed in this paper with the other two algorithms in terms of average information transmission success rate and average network overhead. Among them, the average information transmission success rate represents the ratio of the number of messages successfully arriving at the base station to the total amount of information generated by all nodes, and the average network overhead represents the average number of messages sent by each node. Experimental results show that the data collection protocol proposed in this paper can dynamically provide different transmission qualities for information of different importance levels, effectively reducing network overhead, and the reduced overhead is 11% of the original.
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Neves, Francisco, Ricardo Vilaça et José Pereira. « Detailed black-box monitoring of distributed systems ». ACM SIGAPP Applied Computing Review 21, no 1 (mars 2021) : 24–36. http://dx.doi.org/10.1145/3477133.3477135.

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Modern containerized distributed systems, such as big data storage and processing stacks or micro-service based applications, are inherently hard to monitor and optimize, as resource usage does not directly match hardware resources due to multiple virtualization layers. For instance, interapplication traffic is an important factor in as it directly indicates how components interact, it has not been possible to accurately monitor it in an application independent way and without severe overhead, thus putting it out of reach of cloud platforms. In this paper we present an efficient black-box monitoring approach for gathering detailed structural information of collaborating processes in a distributed system that can be queried for various purposes, as it includes both information about processes, containers, and hosts, as well as resource usage and amount of data exchanged. The key to achieving high detail and low overhead without custom application instrumentation is to use a kernel-aided event driven strategy. We validate a prototype implementation by applying it to multi-platform microservice deployments, evaluate its performance with micro-benchmarks, and demonstrate its usefulness for container placement in a distributed data storage and processing stack (i.e., Cassandra and Spark).
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Wang, Zha, Ji Yao et Sun Peng. « Numerical Simulation for the Effects of Ice Thickness on the Overhead Transmission Cable Tension ». Advanced Materials Research 919-921 (avril 2014) : 1307–11. http://dx.doi.org/10.4028/www.scientific.net/amr.919-921.1307.

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A model of single span overhead transmission cable was established in this paper, based on nonlinear finite element theory, combined with supports displacement method and node equilibrium method, form-finding analysis was carried out for the model of single span overhead transmission cable, the cable tension of model was compared with the theoretical calculation value, and the correctness of the model was verified. Then update cable model was analyzed, the sag, tension and ends tilt of cable under different ice thickness was discussed. This paper provided a reliable method for on-line monitoring the safety of overhead transmission cable in icing conditions.
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Kobusinska, Anna. « On Monitoring and Self-Adaptation to Dynamic Nature of SOA in ReServE Environment ». Foundations of Computing and Decision Sciences 43, no 2 (1 juin 2018) : 105–28. http://dx.doi.org/10.1515/fcds-2018-0005.

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Abstract Reliability is one of the bigest challenges faced by service-oriented systems. Therefore, to solve this problem, we have proposed ReServE - Reliable Service Environment. ReServE increases fault-tolerance of SOA systems and ensures consistent processing despite failures. However, the proposed environment imposes also the performance overhead. Thus, in this paper, we extended ReServE and added a monitoring feature provided by the M3 service. As a consequence, the extended environment can adjust appropriately the load of its modules to the changing interaction and behaviour patterns of service oriented systems. We have experimentally shown that the proposed solution, while providing the required level of reliability, decreases significantly the performance overhead.
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Leng, XueMin, Jing Dai, Yang Gao, AoRan Xu et Ge Jin. « Overhead Transmission Line Anti-External Force Damage System ». IOP Conference Series : Earth and Environmental Science 1044, no 1 (1 juin 2022) : 012006. http://dx.doi.org/10.1088/1755-1315/1044/1/012006.

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Abstract In recent years, human production activities often lead to short-circuit grounding and other faults in overhead transmission lines, resulting in power supply interruption and economic losses, and traditional manual inspection methods are difficult to quickly find the cause and give early warning. In order to reduce the occurrence of such faults and ensure the reliability of power supply, the research on the anti-external force anti-damage system for overhead transmission lines is carried out in this paper. In this paper, the architecture of the anti-external force damage system for overhead transmission lines is designed, and an anti-external force damage algorithm for overhead transmission lines based on the improved R-FCN network model is proposed. have higher accuracy. The anti-external force damage system for overhead transmission lines designed and developed in this paper can realize real-time monitoring of the on-site environment of overhead transmission lines, and can quickly warn of various intrusions that may cause external damage, so as to avoid possible losses.
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Wang, Hong Liang, Min Cao, Da Da Wang, Peng Li et Shao Quan Zhang. « The Research and Design of Overhead Transmission Line Temperature Monitoring Technology Based on ZigBee ». Advanced Materials Research 846-847 (novembre 2013) : 578–82. http://dx.doi.org/10.4028/www.scientific.net/amr.846-847.578.

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Overhead transmission line temperature monitoring system for the protection of the safe operation of the transmission line is important, this paper introduces the ZigBee protocol level and the network topology, using the existing hardware platform designed and implemented programming ZigBee protocol stack, and then studied and designed based on ZigBee technologies overhead Transmission Lines temperature wireless data collection, gives the overall system architecture and hardware circuits, software systems, and do the experiment. After the unified information platform and experiment, the method is proved to be effective and feasible. The technology has high reliability, scalability, and low operating costs, especially for remote areas of Yunnan, China's high-voltage transmission line temperature monitoring.
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Yaroslavskiy, D. A., V. V. Nguyen, M. F. Sadykov, M. P. Goryachev et A. A. Naumov. « Model of own harmonic conductor oscillations for tasks of monitoring the status of airline power transmission lines ». Power engineering : research, equipment, technology 22, no 3 (8 septembre 2020) : 97–106. http://dx.doi.org/10.30724/1998-9903-2020-22-3-97-106.

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The article substantiates the relevance of the inspection of overhead power lines by determining the mechanical loads of the conductors. The conductor sways under the action of external loads and variable internal mechanical loads. The conductor behaves in span like a pendulum. Using the inclinometric method, it is possible to determine the deviations of the conductor in space from its equilibrium position. Having restored the geometry of the conductor in the span of an overhead power line, mechanical loads can be determined. A model of the harmonic oscillations of the conductor in flight is derived to assess the mechanical loads of the conductor overhead power lines. This mathematical model is based on mathematical models of a flexible thread and a model of a physical pendulum. A conductor is a physical pendulum, where the conductor acts as the body, and in the role of the fixed axis of rotation, a straight line passing through the suspension points of the conductor. The developed model allows you to determine the arrow of its sag from the period of oscillations of the conductor in the span. The article considers algorithms for calculating the conductor sag arrows for two cases: the conductor suspension points are at the same height; conductor suspension points are at different heights. A theoretical calculation is given for a model of a span overhead power line with an estimate of the sensitivity of the developed model and its error in determining the sag of the conductor. Using the arrow of the conductor sag, you can restore its geometry, and hence the mechanical load of the conductor. Therefore, knowing the initial geometric parameters of the span of the overhead power line and the current period of the conductor’s oscillations, it is possible to examine its current state.
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