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Journal articles on the topic 'Operating reliability'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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1

أ.م.د.رواء صالح محمد صالح and م.فراس منذر جاسم. "A comparison and an application of reliability, reliability system, hybrid reliability system functions for Rayleigh, Pareto, and Rayleigh Pareto distributions." Journal of Administration and Economics 48, no. 138 (2024): 255–66. http://dx.doi.org/10.31272/jae.i138.1124.

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This study dealt with the analysis of the reliability function for hybrid systems with asymmetric components, where the operating times of these components follow Rayleigh, Pareto, and Rayleigh Pareto distributions, furthermore, we introduced a method of operation based on hybrid systems in order to increase the reliability of the machines operating times. Different simulation experiments were done to estimate the reliability function of these systems using the ML method, then a comparison was made between those estimators, the simulation results proved that the Rayleigh-Pareto distribution gi

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Erokhin, Gennady, and Dmitry Chernikov. "INFLUENCE OF SERVICE LIFE ON THE RELIABILITY OF GRAIN HARVESTERS." SCIENCE IN THE CENTRAL RUSSIA, no. 2 (April 30, 2025): 77–87. https://doi.org/10.35887/2305-2538-2025-2-77-87.

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The influence of the service life of grain harvesters on their reliability was studied. A methodical approach was used to assess the reliability of grain harvesters based on the results of their work in harvesting grain crops. The availability factor was considered as a reliability indicator. The initial data are formed by a set of indicators, the main ones being: combine threshing, engine operating time during grain harvesting and operating time since the start of operation. A distinctive feature of this approach is the collection of information without labor-intensive operations of timing th

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Vintr, Zdenek, and Michal Vintr. "Contribution to Rolling Bearing Reliability Modeling." Applied Mechanics and Materials 110-116 (October 2011): 2497–503. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.2497.

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Rolling bearings are usually considered to be non-repaired items the reliability of which is characterized by mean time to failure, or so called basic rating life. Reliability describes these parameters well in case the bearings are used in operation up to the very time the failure occurs, or during the time corresponding with basic rating life. In case of railway applications the bearings are often used in large groups and are preventively replaced after much shorter operating time as compared with their basic rating life. In the article there is a model which enables us to describe the beari

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Vasiu, T., and A. Budiul Berghian. "Determination of the reliability of cement mills." Journal of Physics: Conference Series 2714, no. 1 (2024): 012015. http://dx.doi.org/10.1088/1742-6596/2714/1/012015.

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Abstract For any industrial entity put into operation, the problem is that it fulfils its specified function, under certain conditions of use and for a specified period of time, i.e. to have an appropriate reliability. In calculating the reliability of industrial entities in general and cement mills in particular, the main problem is to obtain the necessary information. They may be obtained from laboratory tests or tests under normal operating conditions, from maintenance teams, or from specialized control institutions. The general opinion is that only tests under normal operating conditions c

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K, Rangasamy, Divaker Durairaj C, and Manian R. "Tractor Reliability." Madras Agricultural Journal 94, July (2007): 288–89. http://dx.doi.org/10.29321/maj.10.100709.

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Reliability in engineering is defined as the probability that a device will satisfactorily perform its specified function for a specified period of time under a given set of operating conditions. Reliability is thus a mathematical expression of the likelihood of satisfactory operation. Though the repair cost of tractor is high the subsequent loss due to delay in carrying out the repair is potentially much greater than the cost of repair. Under such condition any stoppage of tractor can cause sizeable loss, due to delay in carrying out the timeliness of farm operations during the peak seasons a

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6

Hirst, Eric, and Brendan Kirby. "Operating reserves and bulk-power reliability." Energy 23, no. 11 (1998): 949–59. http://dx.doi.org/10.1016/s0360-5442(98)00036-x.

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Lindén, Julia, Anders Söderberg, and Ulf Sellgren. "Reliability Assessment with Varying Operating Conditions." Procedia CIRP 50 (2016): 796–801. http://dx.doi.org/10.1016/j.procir.2016.04.139.

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Stella, Attah, and Taylor O.E. "Distributed Operating System Security and Reliability." International Journal of Computer Sciences and Engineering 10, no. 12 (2022): 34–40. https://doi.org/10.26438/ijcse/v10i12.3440.

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Golestani, Nima, Rouzbeh Abbassi, Vikram Garaniya, Mohsen Asadnia, and Faisal Khan. "Human reliability assessment for complex physical operations in harsh operating conditions." Process Safety and Environmental Protection 140 (August 2020): 1–13. http://dx.doi.org/10.1016/j.psep.2020.04.026.

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Likhacheva, E. A., V. G. Ostrovskiy, N. A. Lykova, A. N. Musinskiy, and P. A. Baidarov. "Oil submersible pumps reliability during cyclic operation." PROneft’. Proffessional’no o nefti 6, no. 1 (2021): 54–58. http://dx.doi.org/10.51890/2587-7399-2021-6-1-54-58.

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The ESP reliability analysis was conducted to determine the correlation between ESP operation mode and ESP component reliability. The analysis was based on operation data of more than 700 ESP. The reliability of operating mode-dependent ESP components was analyzed. ESP and seal section test results under cyclic and constant operation conditions were shown. As a result, it was determined that periodic operation negatively affect ESP components lifetime. Recommendations for ESP cyclic operation were proposed.

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Qin, Yong Tao, Hui Zhang, Wen Qing Cao, and Zheng Bing Li. "The Dynamic Reliability Analysis of Cryogenic Valve Based on Man-Machine-Environment System Theory." Applied Mechanics and Materials 380-384 (August 2013): 169–72. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.169.

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For comprehensively and quantify analyzing the resource of cryogenic valve fault, improving the operating reliability of cryogenic valve, by means of the dynamic character analysis in the operation reliability of cryogenic valve, dynamic reliability influence factors of cryogenic valve are analyzed by the introduction of on man-machine-environment system theory, and a model of dynamic reliability influence of cryogenic valve is established by the quantify analyzing of man-machine-environment influence factors to evaluate the reliability of cryogenic valve and to construct operation improving m

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Sreeshobha, E., and Prof P.V.N.Prasad. "Identification of Optimal Operating Condition of Six Bus System Based on Reliability Evaluation." International Journal of Engineering & Technology 7, no. 3.3 (2018): 60. http://dx.doi.org/10.14419/ijet.v7i3.3.14486.

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Practical Transmission system interconnecting Ramagundam Thermal power plant, Kotagudam thermal power plant and Nagarjunasagar hydal power plant with Hyderabad, Karnool and Gooty load points is considered for present study. This six bus ring system is a part of the Telangana state transmission system. Reliability indices of the system for variable load at Hyderabad load bus are obtained. Based on the reliability indices the optimal operating condition of the system is identified. Operating the system at identified optimal operating point will nullify the installation of redundant components an

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Dai, Zikuo, Yan Xu, Kejian Shi, Yang You, and Bingxin Li. "Reliability Relation Extraction Technology of Power Distribution Equipment Based on Machine Learning." Journal of Physics: Conference Series 2296, no. 1 (2022): 012009. http://dx.doi.org/10.1088/1742-6596/2296/1/012009.

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Abstract As the key link of power transmission in the power distribution system, the distribution transformer is the core of the entire power distribution system and is responsible for the electrical connection between the medium voltage side and the low voltage side, and based on this to further ensure the stable operation of the power distribution system. Data types, sources, selection principles and data processing methods relate to the operating state of distribution transformers; then expound the meaning of operating state indicators, and build a distribution transformer operating state i

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Zaykov, Vladimir P., Vladimir I. Mescheryakov, and Yurii I. Zhuravlov. "Reliability control of a thermoelectric cooler with changes in ambient temperature." Herald of Advanced Information Technology 6, no. 2 (2023): 152–62. http://dx.doi.org/10.15276/hait.06.2023.10.

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The paper presents the development of method of thermoelectric system reliability indexes control for providing thermal modesof radio electronic equipment, based on thermoelectric coolers medium temperature variation. A mathematical model for investigating influence of the environment temperature variation on the reliability performance of a single-cascade thermoelectric cooler at a given temperature level of cooling, thermal load, geometry of thermoelement branches for different characteristiccurrent operating modes is considered. The results of calculations of the basic parameters, reliabili

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Zaykov, Vladimir P., Vladimir I. Mescheryakov, and Yurii I. Zhuravlov. "Controlling the reliability performance of a thermoelectric cooler under variable heat load." Herald of Advanced Information Technology 6, no. 1 (2023): 69–80. http://dx.doi.org/10.15276/hait.06.2023.5.

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The work is devoted to substantiation of possibility of reduction of failure rate of thermal mode support system when operating with variable load by control of reliability indicators of thermoelectric cooler. A mathematical model for evaluating the effect of variable thermal load on reliability indicators of a single-cascade thermoelectric cooler at a given temperature level of cooling, medium temperature, geometry of thermocouple branches for various current modes of operation is considered. The relationship between the cooler steady-state operation time and mass and heat capacity of the str

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Guliyev, Sedir. "ASSESSMENT OF ROLLING BEARINGS OPERATING CONDITIONS." Technical Sciences and Technologies, no. 4(26) (2021): 50–57. http://dx.doi.org/10.25140/2411-5363-2021-4(26)-50-57.

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The article examines the possibilities of ensuring the reliability of the rolling bearingsof the equipment used in the process of painting aluminum sheets. It was noted that the fully mechanized production line at the enterprise ensures the pro-duction of high quality aluminum sheets. However, the productivity of the technological equipment usedin the dyeing process and the rejection of the bearings have a negative impact on the efficiency of production. Technological machines and equipment work in Azeraluminum OJSC in particularly difficult conditions, and therefore there is a need to increas

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Nair, Sukanya J., and K. Sasikumar. "Fuzzy reliability-based optimization of a hydropower reservoir." Journal of Hydroinformatics 21, no. 2 (2019): 308–17. http://dx.doi.org/10.2166/hydro.2019.078.

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Abstract Reservoir operation modeling and optimization are inevitable components of water resources planning and management. Determination of reservoir operating policy is a multi-stage decision-making problem characterized by uncertainty. Uncertainty in inflows and power demands lead to varying degrees of the working of a reservoir from one period to another. This transition, being ambiguous in nature, can be addressed in a fuzzy framework. The different working states of the reservoir are described as fuzzy states. Based on the degree of success in meeting the power demand and randomness ass

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Dziuba, Lidiia, Mariia Pylypchuk, Oksana Chmyr, and Roman Pavliuk. "Model of Parametric Reliability of Woodworking Machine Tools." Journal of Engineering Sciences 12, no. 1 (2025): A12—A19. https://doi.org/10.21272/jes.2025.12(1).a2.

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The article aims to develop a model of the parametric reliability of woodworking machine tools based on the criterion of technological accuracy. For this purpose, a mathematical model of the operating time of a woodworking machine to parametric failure was created using a scheme for changing the size of the workpiece. A linear differential equation characterizing the change in the dimensions for the machined workpiece was obtained based on the assumption of a linear relationship between the wear rate of the machine tool components and its technological accuracy. The differential equation was s

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Jakubowski, Krzysztof, Jacek Paś, Stanisław Duer, and Jarosław Bugaj. "Operational Analysis of Fire Alarm Systems with a Focused, Dispersed and Mixed Structure in Critical Infrastructure Buildings." Energies 14, no. 23 (2021): 7893. http://dx.doi.org/10.3390/en14237893.

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The article presents issues regarding the impact of operating conditions on the functional reliability of representative fire alarm systems (FASs) in selected critical infrastructure buildings (CIB). FAS should operate correctly under variable environmental conditions. FASs ensure the safety of people and CIB. Operational measurements for 10 representative systems were conducted in order to determine the impact of environmental conditions on FAS reliability. Selected operational indices were also determined. The next stage involved developing two models of representative FASs and the availabil

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20

Tomaszewska, Justyna, Jan Barański, Tomasz Zienkiewicz, Marek Iwaniuk, and Bartłomiej Kurzyk. "Reliability Determination of Nanoelectronic Devices Using Semi-Marcov Processes." Journal of KONBiN 50, no. 3 (2020): 277–96. http://dx.doi.org/10.2478/jok-2020-0062.

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AbstractThe main purpose of the article is to investigate the reliability process of nanoelectronics devices. Firstly, the research problem is presented based on foreign data source. Then, the analytical method has been chosen – semi-Marcov processes. Next, according to the adopted method and input data, the operating process has been analyzed. Finally, the probabilities of objects being in particular operating states, e.g. in the state of failure-free operation have been determined.

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Krakovsky, Yuri, Vyacheslav Belyakov, and Nadezhda Bendik. "Evaluation of Reliability Indicators of Multicomponent Equipment by Simulation Modeling." System Analysis & Mathematical Modeling 5, no. 1 (2023): 57–65. http://dx.doi.org/10.17150/2713-1734.2023.5(1).57-65.

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Mathematical and software for calculating reliability indicators of multicomponent equipment based on an event-based approach by simulation modeling has been created. For each component, experts set the range of changes in operating time and its average value. A three-parameter triangular distribution was chosen as a probabilistic model of operating time of equipment components. A beta distribution is proposed as a probabilistic model for the average operating time under uncertainty. Reliability indicators are selected: numerical probability of trouble-free operation; numerical average operati

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Ma, Hongming, Guochao Qian, Jie Zhang, et al. "Fatigue Life Estimation of Critical Components in a Motor-Energized Spring Operating Mechanism Based on Theory of Reliability." Energies 17, no. 7 (2024): 1623. http://dx.doi.org/10.3390/en17071623.

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High-voltage switchgear is a key control and protection unit in power systems. The reliable operation of the operating mechanism is essential for the reliable opening and closing of the switchgear. This is a vital guarantee for the safety and stability of the power systems. The spring operating mechanism is a commonly used actuator for circuit breakers at 12–252 kV. However, a reliability estimation method that is convenient, practical and accurate is still lacking. The aim of this paper is to explore a reliability estimation method based on a stress–strength interference reliability theory an

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Галиев, Ильгиз, Ilgiz Galiev, Раиль Хусаинов, et al. "INFLUENCE OF THE TRACTORS’ OPERATION LEVEL ON ITS RELIABILITY INDICATORS IN AGRICULTURAL PRODUCTION." Vestnik of Kazan State Agrarian University 13, no. 3 (2018): 77–80. http://dx.doi.org/10.12737/article_5bcf57af5d83b6.20549781.

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During the tractors’ operation, they interact as a control object with dynamic loads during technological operations with climatic, operational, organizational conditions on the one hand, and technical operation on the other, i.e. machinery is influenced by operating conditions. A comprehensive, dimensionless indicator of the operating conditions of tractors in agricultural production is the level of their operation. The level of operation of the tractor is the state of their operation in the household, which is determined by the degree of implementation of technical maintenance activities of

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Ryabko, E. V. "OPERATIONAL RELIABILITY OF CYLINDER COVERS OF DIESEL ENGINE." World of Transport and Transportation 15, no. 2 (2017): 178–87. http://dx.doi.org/10.30932/1992-3252-2017-15-2-17.

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[For the English abstract and full text of the article please see the attached PDF-File (English version follows Russian version)].ABSTRACT A statistical analysis of failures of cylinder covers of diesel engines with different operating conditions was carried out. The histograms of their failures were constructed with subsequent interpolation for an objective assessment of the effect of the operating regime on reliability of the nodes being tested. It was found out that under the conditions close to nominal, the temperature tension of the bottom becomes decisive for efficiency of the cylinder

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Shuvalov, V. P., B. P. Zelencov, and I. G. Kvitkova. "Optical fiber reliability model under degradation conditions." Herald of the Siberian State University of Telecommunications and Informatics, no. 3 (October 1, 2022): 56–61. http://dx.doi.org/10.55648/1998-6920-2022-16-3-56-61.

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To calculate the reliability of an optical fiber under degradation conditions, the Markov model taking into account the worsening of fiber characteristics during its operation is proposed. The methodology for calculating the unavailability factor at different operating times is given as well as an example of estimating the unavailability factor.

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Svintsov, Alexander, Evgeniy Alekseev, Svetlana Shambina, Roman Fediuk, and Vladislav Fominov. "Reliability of water fittings in operating conditions." E3S Web of Conferences 263 (2021): 04010. http://dx.doi.org/10.1051/e3sconf/202126304010.

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Water fittings are an integral part of the internal water supply system. The reliability of their work under operating conditions largely influence on the continuity of water supply to the population. The reliability indicators of sanitary fittings allow the services responsible for the technical condition of the indoor water supply of houses to pay priority attention to the factors that determine the uninterrupted water supply of the population and reduce the loss of drinking water. In this study, the results of indicators of operational reliability of faucets for sinks in kitchens and washba

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Mohamed, Shrien F. A. "RELIABILITY THE UTILIZATION FROM WATER OPERATING UNIT." Misr Journal of Agricultural Engineering 29, no. 1 (2012): 205–20. http://dx.doi.org/10.21608/mjae.2012.102576.

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Hong, Lanqing, Qingqing Zhai, Xin Wang, and Zhi-Sheng Ye. "System Reliability Evaluation Under Dynamic Operating Conditions." IEEE Transactions on Reliability 68, no. 3 (2019): 800–809. http://dx.doi.org/10.1109/tr.2018.2869572.

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Swift, Michael M., Brian N. Bershad, and Henry M. Levy. "Improving the reliability of commodity operating systems." ACM Transactions on Computer Systems 23, no. 1 (2005): 77–110. http://dx.doi.org/10.1145/1047915.1047919.

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Kosinskiy, Mikhail, and Vladimir Shikhin. "Fuzzy models based operating reliability analysis method." IFAC Proceedings Volumes 45, no. 7 (2012): 191–95. http://dx.doi.org/10.3182/20120523-3-cz-3015.00038.

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Swift, Michael M., Brian N. Bershad, and Henry M. Levy. "Improving the reliability of commodity operating systems." ACM SIGOPS Operating Systems Review 37, no. 5 (2003): 207–22. http://dx.doi.org/10.1145/1165389.945466.

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Senegačnik, Andrej, and Matija Tuma. "Operating reliability of a conventional power plant." Reliability Engineering & System Safety 37, no. 3 (1992): 211–15. http://dx.doi.org/10.1016/0951-8320(92)90125-5.

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Zhou, Guanghui, Fengtian Chang, Changle Tian, and Qi Lu. "A reliability optimization allocation method for the hydraulic system of CNC honing machine considering the operating condition information." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 12 (2017): 2244–64. http://dx.doi.org/10.1177/0954406217719475.

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In recent years, reliability optimization allocation has drawn a broad spectrum of attentions, especially for complex systems consisting of a large number of subsystems and components. Hydraulic system, deemed as a complex system, plays a great role in reliability increment of the CNC honing machine. In order to realize the CNC honing machine tool’s balanced operating performance, the crucial hydraulic system is designed to obtain the optimal and well-balanced allocation solution under the constrains of cost and reliability. Meanwhile, the quantified operating factor that influences the alloca

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Nepal, Nahakul, and Rajesh Karki. "Quantifying Power System Operational Reliability." Applied Sciences 9, no. 14 (2019): 2777. http://dx.doi.org/10.3390/app9142777.

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Rising uncertainty in power systems due to ongoing system and operational changes has led to increasing risks in operating a system in a reliable and economic manner. There are growing reliability concerns with the widely used methods, such as the N-1 criterion, to determine operating reserve requirement during unit commitment, and the economic load dispatch method to allocate regulating margin to respond to disturbances. These deterministic methods do not consider the uncertainty or stochastic nature of power systems and are often inadequate to maintain the required operating reliability of m

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Zhao, Ming Xin. "Research on Operating System Security Technology." Applied Mechanics and Materials 703 (December 2014): 294–97. http://dx.doi.org/10.4028/www.scientific.net/amm.703.294.

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This paper study three mainstream operating system,their kernel module on-demand loading mechanism, their safety and reliability measures, points out the weaknesses these operating systems have in the kernel module security control. Along with the study of two new operating system -- dynamic extensible operating system and virtual address space based on file operation system, make a prospects on the operating system architecture development

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Di, Shuai. "Research on Operation Reliability Evaluation of Power-generating Unit." Journal of Physics: Conference Series 2108, no. 1 (2021): 012004. http://dx.doi.org/10.1088/1742-6596/2108/1/012004.

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Abstract Objective and reasonable evaluation is the basis of power-generating unit optimal operation, but evaluation method based on single weight can’t adapt to the high accuracy requirement of comprehensive evaluation. In order to achieve the accurate evaluation of power-generating unit operating reliability, this paper firstly calculates subjective weight and objective weight of target attribute by analytic hierarchy process method and entropy weight method. It calculates the associated weight of target attribute by grey relational degree method, and it obtains the linear combined weight by

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GHODRATI, BEHZAD, ALIREZA AHMADI, and DIEGO GALAR. "SPARE PARTS ESTIMATION FOR MACHINE AVAILABILITY IMPROVEMENT ADDRESSING ITS RELIABILITY AND OPERATING ENVIRONMENT — CASE STUDY." International Journal of Reliability, Quality and Safety Engineering 20, no. 03 (2013): 1340005. http://dx.doi.org/10.1142/s0218539313400056.

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Industrial operation cost analysis shows that, in general, maintenance represents a significant proportion of the overall operating costs. Therefore, the improvement of maintenance follows the final goal of any company, namely, to maximize profit. This paper studies spare parts availability, an issue of the maintenance process, which is an important way to improve production through increased availability of functional machinery and subsequent minimization of the total production cost. Spare parts estimation based on machine reliability characteristics and operating environment is performed. T

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Albaker, Abdullah. "Reliability-Constrained Optimal Scheduling of Interconnected Microgrids." Engineering, Technology & Applied Science Research 13, no. 3 (2023): 11042–50. http://dx.doi.org/10.48084/etasr.5970.

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This paper proposes a Mixed-Integer Linear Programming (MILP) optimization model for the scheduling problem of the interconnected microgrid system. The proposed model is capable of efficiently minimizing the microgrids' total operating costs and improving the entire system's reliability, as it is constrained based on enhancing the interconnected microgrids' reliability. The Expected Energy Not Supplied (EENS) is considered in order to ensure minimizing the interconnected microgrids' power deficiency. Furthermore, the proposed model has the capability to solve the optimization problem consideri

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Babeshko, Eugene, Vyacheslav Kharchenko, Kostiantyn Leontiiev, and Eugene Ruchkov. "PRACTICAL ASPECTS OF OPERATING AND ANALYTICAL RELIABILITY ASSESSMENT OF FPGA-BASED I&C SYSTEMS." RADIOELECTRONIC AND COMPUTER SYSTEMS, no. 3 (September 28, 2020): 75–83. http://dx.doi.org/10.32620/reks.2020.3.08.

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Operating reliability assessment of instrumentation and control systems (I&Cs) is always one of the most important activities, especially for critical domains such as nuclear power plants (NPPs). It is an important source of I&C reliability information preferable to lab testing data because it provides information on I&C reliability under real use conditions. That is the reason that now it is a common practice for companies to have an established process of collecting operating reliability data on a large variety of used components on regular basis, maintaining a database with fail

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Soszyńska-Budny, Joanna. "Optimizing Reliability of Critical Infrastructures with Application to Port Oil Piping Transportation System." Advanced Materials Research 891-892 (March 2014): 1571–76. http://dx.doi.org/10.4028/www.scientific.net/amr.891-892.1571.

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A new approach to reliability optimization of multistate complex systems with dependent components at variable operation conditions called critical infrastructures is proposed. The reliability function of the critical infrastructure system is introduced and optimized. Further, the procedure of the critical infrastructure reliability optimization using the linear programming method is proposed and adopted to reliability optimization of an oil piping transportation system operating at maritime port.

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Negrilă, R. I., and S. V. Igreţ. "The reliability of automotive subsystems influence on the motor vehicles fuel economy." IOP Conference Series: Materials Science and Engineering 1220, no. 1 (2022): 012028. http://dx.doi.org/10.1088/1757-899x/1220/1/012028.

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Abstract The reliability theory consistently regards all phases of vehicle construction and operation. The properties determining the vehicle reliability, which are also called potential objectives, are precisely formulated from early design and manufacturing phases and accomplished in the production process. The analysis of reliability from the perspective of potential properties allows us to identify certain categories of potential properties. One refers to potential properties that depend on the deterioration of operating functions. In this category, we can find the resistance to breakage a

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Gubarevych, Oleg, Stanisław Duer, Inna Melkonova, et al. "Research on and Assessment of the Reliability of Railway Transport Systems with Induction Motors." Energies 16, no. 19 (2023): 6888. http://dx.doi.org/10.3390/en16196888.

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Increasing the efficiency and reliability of modern railway transport is accompanied by an increase in monitoring and diagnostic systems for the current state of electric drives. Modern railway transport contains a large number of induction motors to ensure the operation of the drives of various mechanisms. In the article, based on the operational statistics of engine failures and the proposed scheme for diagnosing them, studies were carried out and a model was developed for assessing the reliability of a transport system equipped with an on-board diagnostic system for the current state. When

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Jiao, Kaituo, Peng Wang, Yi Wang, et al. "Study on the multi-objective optimization of reliability and operating cost for natural gas pipeline network." Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 76 (2021): 42. http://dx.doi.org/10.2516/ogst/2021020.

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The development of natural gas pipeline network towards larger scale and throughput has urged better reliability of the pipeline network to satisfy transportation requirement. Previously, studies of optimizing natural gas pipeline network have been mainly focused on reducing operating cost, with little concern on the reliability of pipeline network. For a natural gas pipeline network with a variety of components and complicated topology, a multi-objective optimization model of both reliability and operating cost is proposed in this study. Failure of each component and the state of pipeline net

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Ahmadov Ali Hikmat Soltan Ahmad. "Reliability assessment of mobile pumping units." World Journal of Advanced Research and Reviews 24, no. 3 (2024): 1150–54. https://doi.org/10.30574/wjarr.2024.24.3.3806.

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An analytical formula for determining the mathematical expectation and variance is derived . functions reliability mobile pumping units, allowing evaluate residual development With taking into account their technical condition at the start of the next process. An analytical expression was determined For definitions mathematical expectations And differences V safe functions, which allows mobile pumping units to calculate the residual period at the beginning of the process taking into account its technical condition. The problem of trouble-free operation of mobile pumping units at any point in t

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Romanova, Victoria, and Sergey Khromov. "Operational reliability of low-voltage asynchronous motors at asymmetrical supply voltage." E3S Web of Conferences 139 (2019): 01053. http://dx.doi.org/10.1051/e3sconf/201913901053.

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Issues of operating modes of 4A series asynchronous squirrel-cage motors and AI serried motors at asymmetrical supply voltage for different values of motor shaft load are considered on the basis of simulation using Matlab software package and Simulink package. In the simulation, currents in asynchronous motor phases were evaluated as a function of K2U, KZ, and based on these results, permissible operation parameters were evaluated for induction motors. The results obtained are the basis for technical solutions aimed at improving operational reliability of asynchronous motors, they will allow t

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Liu, Junyi, Yanfang Fan, Junjie Hou, and Xueyan Bai. "Reliability Evaluation of DC/DC Converter in Direct Current Collection System of Wind Farm Considering the Influence of Control Strategy." Processes 11, no. 10 (2023): 2825. http://dx.doi.org/10.3390/pr11102825.

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The DC collection system of wind farms can effectively solve the problems of harmonic resonance and reactive power transmission in large-scale wind power AC collection systems, and has broad development prospects. The DC/DC converter is critical equipment in the wind farm DC collection system, and its reliability is related to the entire collection system’s safe and stable operation. The reliability of DC/DC converters is affected by factors such as system operating conditions and control strategies. Based on this, a reliability evaluation model for boost full-bridge isolated (BFBIC) DC/DC con

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Baydakova, N. V., M. G. Tyagunov, M. M. Sultanov, and M. S. Ivanitsky. "Development of a prediction model for the probability of failure-free operation of elements and components of the main equipment of hydroelectric power plant." Safety and Reliability of Power Industry 15, no. 2 (2022): 111–19. http://dx.doi.org/10.24223/1999-5555-2022-15-2-111-119.

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A structural diagram of calculation of reliability of hydraulic turbines is proposed taking into account control of arameters of state of system elements, based on data of the map of setpoints of automation and process protection of hydroturbine of HPP. Failure-free operation of hydraulic unit systems and assemblies was analyzed for reliability indicators. The main elements of the system are identified. The safety of HPP operation largely depends on the reliability of the main generating equipment. Hydroturbine equipment of a hydroelectric power plant is designed for specific operating conditi

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Lee, Jung-Hwan, Hyang-Sig Jun, Hee-Mun Park, Jin-Hyun Park, and Sang-Kil Lim. "Reliability Analysis of a Multilevel Inverter Applied to Stratospheric Drones Using Fault Tree Analysis." Electronics 12, no. 24 (2023): 4952. http://dx.doi.org/10.3390/electronics12244952.

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Stratospheric drones operating in extreme environments are very important for predicting reliability and are high-efficiency, high-performance, and lightweight power units. Multilevel inverters are suitable for application as power conversion units for stratospheric drones. A guideline is needed to evaluate whether it is suitable for practical application from a reliability perspective among various multilevel topologies. Existing reliability prediction models cannot reflect the operating characteristics of multilevel inverters. In this paper, we analyze the driving characteristics of each top

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Tabucanon, Allan Sriratana, Areeya Rittima, Detchasit Raveephinit, et al. "Impact of Climate Change on Reservoir Reliability: A Case of Bhumibol Dam in Ping River Basin, Thailand." Environment and Natural Resources Journal 19, no. 4 (2021): 266–81. http://dx.doi.org/10.32526/ennrj/19/2021012.

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Bhumibol Dam is the largest dam in the central region of Thailand and it serves as an important water resource. The dam’s operation relies on reservoir operating rules that were developed on the basis of the relationships among rainfall-inflow, water balance, and downstream water demand. However, due to climate change, changing rainfall variability is expected to render the reliability of the rule curves insecure. Therefore, this study investigated the impact of climate change on the reliability of the current reservoir operation rules of Bhumibol Dam. The future scenarios from 2000 to 2099 ar

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Ahmadov, Ali Hikmat Soltan Ahmad. "Reliability assessment of mobile pumping units." World Journal of Advanced Research and Reviews 24, no. 3 (2024): 1150–54. https://doi.org/10.5281/zenodo.15187765.

Full text

Abstract:

An analytical formula for determining the mathematical expectation and variance is derived . functions reliability mobilepumping units, allowing evaluate residual development With taking into account their technical condition at the startof the next process. An analytical expression was determined For definitions mathematical expectations And differencesV safe functions, which allows mobile pumping units to calculate the residual period at the beginning of the processtaking into account its technical condition. The problem of trouble-free operation of mobile pumping units at any point intime t

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