Improving the human-machine-environment monitoring system and operation rules for increasing operational tractor reliability

2020 ◽  
pp. 12-20
Author(s):  
Nikolay A. Petrishchev ◽  
Mikhail N. Kostomakhin ◽  
Aleksandr S. Sayapin ◽  
Irina B. Ivleva
Keyword(s):  
Human Factor ◽  
Negative Impact ◽  
Operational Reliability ◽  
Operating Costs ◽  
Research Purpose ◽  
Environment Monitoring ◽  
Operating Rules ◽  
Operation Rules ◽  
Subjective Assessments ◽  
Operational Factors

During fieldwork, machines and technical personnel work almost to the limit of their capabilities, while there is an urgent need for comprehensive monitoring of the interaction of the "Human-machine-environment" system and the operating rules for improving the operational reliability of tractors. (Research purpose) The research purpose is in developing a prototype of an electronic digital system that will help the operator to control changes in operational factors for improving the reliability of the entrusted equipment. (Materials and methods) The article presents conducted research on the use of the Galileo Sky+ terminal, which works together with additional programmable contactless sensors. This made it possible improving the system for increasing operational reliability. (Results and discussion) The article present examples and describes the accounting process for the human factor in the Human-machine-environment system. Authors have found that using the monitoring helps the operator and owner in reducing the share of subjective assessments in the efficiency of tractor operation and the readiness to work. (Conclusion) Using the proposed solutions for improving monitoring of the "Human-machine-environment" system will minimize the negative impact and risks of failures caused by the human factor in the operation of equipment. According to preliminary expert estimates, the efficiency of using the system will reduce operating costs and prevent gross errors in the operation of tractors.

Two-Phase Short Circuit in the Power Grid Powered by a Transformer with a Y/Δ-11 Winding Connection

2020 ◽  
pp. 25-30
Author(s):  
Aleksandr S. Serebryakov ◽  
Vladimir L. Osokin ◽  
Sergey A. Kapustkin
Keyword(s):  
High Speed ◽  
Short Circuit ◽  
Relay Protection ◽  
Electric Circuit ◽  
Operational Reliability ◽  
Research Purpose ◽  
Industrial Complex ◽  
Two Phase ◽  
Short Circuit Currents ◽  
Secondary Winding

The article describes main provisions and relations for calculating short-circuit currents and phase currents in a three-phase traction transformer with a star-triangle-11 connection of windings, which feeds two single-phase loads in AC traction networks with a nominal voltage of 25 kilovolts. These transformers provide power to the enterprises of the agro-industrial complex located along the railway line. (Research purpose) The research purpose is in substantiating theoretical equations for digital intelligent relay protection in two-phase short circuits. (Materials and methods) It was found that since the sum of instantaneous currents in each phase is zero, each phase of the transformer works independently. We found that this significantly simplifies the task of analyzing processes with a two-phase short circuit. In this case, the problem of calculating short-circuit currents in the traction network can be simplified by reducing it to the calculation of an ordinary electric circuit with three unknown currents. (Results and discussion) The article describes equations for calculating short-circuit resistances for one phase of the transformer when connecting the secondary winding as a star or a triangle. The currents in the phases of the transformer winding at short circuit for the star-triangle-11 and star-star-with-ground schemes are compared. It was found that when calculating short-circuit currents, there is no need to convert the secondary winding of the traction transformer from a triangle to a star. (Conclusions) It was found that the results of the research can be used in the transition of relay protection systems from electromagnetic relays to modern high-speed digital devices, which will increase the operational reliability of power supply systems for traction and non-traction power consumers.

Optimization of the design of the pig launcher-receiver chambers of cleaning and diagnostic tools

2021 ◽  
pp. 460-465
Author(s):  
Илья Александрович Флегентов ◽  
Алексей Викторович Кулешов
Keyword(s):  
Operational Reliability ◽  
Operating Costs ◽  
Diagnostic Tools ◽  
Optimized Design ◽  
Metal Consumption ◽  
Process Diagnostics ◽  
Working Chamber ◽  
Pipeline Inspection ◽  
Main Pipelines ◽  
Applied Design

По результатам проведенного анализа конструктивных решений камер пуска-приема средств очистки и диагностики (КПП СОД), применяемых при технической диагностике и техническом обслуживании магистральных трубопроводов в России и за рубежом, был установлен ряд проблем существующих конструкций, снижающих эксплуатационную надежность данного вида оборудования. Это, в свою очередь, обусловило актуальность задачи оптимизации конструкции КПП СОД, в том числе в части унификации используемых при их изготовлении деталей, увеличения доли заводских изделий. Были приняты решения, обеспечившие комплексный подход к вопросу повышения надежности и ремонтопригодности оборудования - разработана новая конструкция КПП СОД, позволяющая снизить металлоемкость и трудоемкость при изготовлении, сократить эксплуатационные затраты, повысить технологичность и прочностные характеристики. В рамках решения данной задачи выполнены расчетно-теоретические исследования с применением прикладного программного комплекса SIMULIA Abaqus. Надежность оптимизированной конструкции подтверждена результатами испытаний на прочность опытного образца КПП СОД с номинальным диаметром рабочей камеры DN 1000. Разработан типоразмерный ряд КПП СОД усовершенствованной конструкции с номинальными диаметрами рабочей камеры DN 150-1200 для применения на магистральных нефте- и нефтепродуктопроводах. Based on the results of the analysis of the design solutions of launching and receiver stations of pipeline inspection gauges (pig launchers-receivers) used in process diagnostics and maintenance of main pipelines in Russia and abroad, a number of applied design issues was established. This, in turn, led to the relevance of the issue of optimizing the design of pig launchers and receivers, including the unification of parts used in their manufacture, thereby increasing the share of factory-made products. Decisions were made that provided a comprehensive approach to the issue of improving the operational reliability of this type of equipment - a new design of pig launchers and receivers was developed, which allows to reduce production metal consumption and labor intensity, reduce operating costs, increase constructability and reliability. As part of the solution of this issue, computational and theoretical studies using the SIMULIA Abacus software package were carried out. The reliability of the optimized design is confirmed by the results of durability tests of the pig launcher and receiver prototype with the nominal diameter of the working chamber of DN 1000. A dimension range of advanced designs of pig launchers and receivers with nominal working chamber diameters of DN 150-1200 for use in main oil and petroleum product pipelines was developed.

scholarly journals Synthesis of neural network structure for the analysis of complex structured ocular fundus images

2021 ◽  
pp. 1-12
Author(s):  
Aslan Tatarkanov ◽  
Islam Alexandrov ◽  
Rasul Glashev
Keyword(s):  
Neural Network ◽  
Human Factor ◽  
Negative Impact ◽  
Medical Decision ◽  
Fundus Images ◽  
Ocular Fundus ◽  
Neural Network Structure ◽  
Ocular Diagnostics ◽  
Low Entropy ◽  
Domestic Medical

This paper proposes an algorithm for synthesizing a neural network (NN) structure to analyze complex structured, low entropy, ocular fundus images, characterized by iterative tuning of the adaptive model’s solver modules. This algorithm will assist in synthesizing models of NNs that meet the predetermined characteristics of the classification quality. The relevance of automating the process of ocular diagnostics of fundus pathologies is due to the need to develop domestic medical decision-making systems. Because of using the developed algorithm, the NN structure is synthesized, which will include two solver modules, and is intended to classify the dual-alternative information. Automated hybrid NN structures for intelligent segmentation of complex structured, low entropy, retinal images should provide increased efficiency of ocular diagnostics of fundus pathologies, reduce the burden on specialists, and decrease the negative impact of the human factor in diagnosis.

scholarly journals PERSEPSI MASYARAKAT DALAM UPAYA PENGENDALIAN KEBAKARAN HUTAN DI TAMAN NASIONAL GUNUNG CIREMAI Community Role to the Forest Fire Control in Mount Ciremai National Park

2017 ◽  
Vol 8 (2) ◽  
pp. 141-146
Author(s):  
Bambang Hero Saharjo ◽  
Guntala Wibisana
Keyword(s):  
National Parks ◽  
Forest Fire ◽  
Forest Fires ◽  
National Park ◽  
Human Factor ◽  
Negative Impact ◽  
Primary Data ◽  
Fire Control ◽  
Questionnaire Research

Forest fires cause losses and negative impact. Forest fire in mountain Ciremai national park caused by human factor. Efforts to control forest fires currently preferred by involving the community. This research is done using primary data and information obtained from filling the questionnaire. Research is taking samples from three villages namely Cibuntu village, Padabeunghar villages, and Kaduela village. Respondents were interviewed 90 respondents. Based on researches known that the area around the national park had high perception of Ciremai national existance. They argue that the mountain Ciremai national parks useful in life and the management of mountain Ciremai national parks better. Based on the scoring of 90 respondents 70 of them have a highperception of the forest fire control in mountain Ciremai national park, it means that most of people have participated in efforts to control forest fire.Key words: Forest fire,community role, forest fire control

scholarly journals Analysis of Operation Rules of Provincial Peak Shaving Auxiliary Service Market

2021 ◽  
Vol 236 ◽  
pp. 04013
Author(s):  
Wang Xingkai ◽  
Tang Yijin ◽  
Li Hongze
Keyword(s):  
Power System ◽  
System Reform ◽  
Peak Shaving ◽  
Service Market ◽  
Operating Rules ◽  
Operation Rules ◽  
Economic Operation ◽  
New Energy ◽  
Plant Operations ◽  
Auxiliary Services

In order to implement the requirements of the power system reform, to ensure the safety, stability and economic operation of the power system, and to promote the consumption of new energy, all provinces in China have built the peak-control auxiliary service market, and explore the establishment of a new mechanism for sharing and sharing of peak-control auxiliary services. Based on the operating rules of the peaking auxiliary service market in Xinjiang, Shanxi, Gansu, Fujian, Jiangsu, Jiangxi, Northeast, Anhui, Ningxia, Shanghai, Shandong and other places, the author compares and evaluates the key content of the market operating rules from four aspects: market members and their responsibilities, deep peaking transaction details, emergency start-stop peaking transaction details, and measurement and settlement, and also finds a direction for the provinces to revise or adjust the rules of peaking auxiliary services in the future for the reference of power grid dispatching, power plant operations and other departments, in order to improve the understanding of relevant personnel of the peaking auxiliary service market.

MATHEMATICAL MODEL OF MATERIALS OF STRUCTURES AND ELEMENTS OF RESTORED SOIL DAMS FOR NUMERICAL CALCULATIONS

2021 ◽  
pp. 46-51
Author(s):  
V. YA. ZHARNITSKIY ◽  
◽  
A. P. SMIRNOV
Keyword(s):  
Negative Impact ◽  
Emergency Situation ◽  
Numerical Calculations ◽  
Stress And Strain ◽  
Operational Parameters ◽  
Reliable Operation ◽  
Operational Factors ◽  
Materials Used ◽  
Technical Operation ◽  
Strain Tensors

Identified in the process of analyzing the operation of the structure, in the conditions of its operation, allow to assess the actual reserves of the bearing capacity of the structure and take effective measures to restore the operational parameters. The main criteria influencing the choice of mathematical models of materials for structures and elements of soil dams are more consistent with the model of the equation of state connecting the components of stress and strain tensors, as well as the rate of their change, which are obtained and tested for numerical calculations and have a full set of constants for materials used in the calculations of earth dams, the choice of their structures (concrete,reinforced concrete, soils, etc.). Reliable operation of soil dams is possible only if all proper conditions are met. The causes of dam accidents and their damage must be known not only to eliminate errors at the design and construction stages, but also during their operation. In order to exclude the negative impact of operational factors on the safety of soil HTS, it is necessary not only to strictly observe the rules of technical operation and take measures to exclude the possibility of an emergency situation during technological operations at facilities, but also to have methods for predictive justification of the restoration of strength and operational indicators of structures and elements of soil dams.

ANALYSIS OF PROPERTIES AND STRUCTURE CHANGE PROCESS SAMPLES MATERIAL UNDER EXPOSURE ULTRASONIC STABILIZATION

2021 ◽  
Vol 1 (142) ◽  
pp. 124-130
Author(s):  
Timur A. Baltaev ◽  
◽  
Roza I. Dzhusupkalieva ◽  
Anna Z. Sagynalieva ◽  
◽  
...  
Keyword(s):  
Ultrasonic Treatment ◽  
Negative Impact ◽  
Mechanical Vibration ◽  
Sharp Decrease ◽  
Correct Choice ◽  
Research Purpose ◽  
Sample Material ◽  
Round Plate ◽  
Cyclic Action ◽  
Micro Cracks

The most important task of precision engineering on the modern stage is the development of effective technological processes of manufacturing, providing not only achieving high precision at low costs, but also retaining the original in terms of accuracy throughout the life of the product. (Research purpose) The research purpose is in studying the possible negative effect of ultrasonic mechanical vibration in the process of stabilizing the deformation of circular plates on the subject of appearing of various kinds of micro-cracks, which result will be a sharp decrease in resource products in general, and to make a comparative analysis of changes in the properties and structure of the material. (Materials and methods) Half of the prepared samples were processed using a thermomechanical technology based on the cyclic action of a liquid or gas in different temperature conditions, the other part of the samples was processed using the proposed technology based on the method of ultrasonic mechanical action. The end section of the round plate for both processing options was prepared. (Results and discussion) In the structure of the material of both the samples treated by different methods, there are certain bundles of the micro-cracks type caused by plastic impact. The structure of sample material processed by standard method is more rough, the concentration of microcracks in the material of the sample treated by ultrasonic impact does not exceed the concentration of microcracks of the sample material processed in a standard way. (Conclusions) Changing the structure of the material of the round plate after ultrasonic treatment may not have a negative impact and does not affect the durability of the product during operation. With the correct choice of the ultrasonic treatment mode, a more uniform stress reduction can be achieved during the processing, and the quality and efficiency of the process can be improved. Ultrasonic processing increases the mechanical characteristics of the material, such as tensile strength and proportionality.

Chatbot Implementation in a Steel Company in Russia

2022 ◽  
pp. 268-290
Author(s):  
Alexander Skuridin
Keyword(s):  
Project Management ◽  
Technology Adoption ◽  
Public Interest ◽  
Operating Costs ◽  
Steel Company ◽  
Communication Efficiency ◽  
The Subject ◽  
Operational Factors ◽  
Office Employees

Chatbots (sometimes just called “bots”) are the subject of much corporate and public interest today. Many enterprises are looking to get started with chatbot development initiatives to improve communication efficiency as well as reduce operating costs. Current research indicates constantly growing interest in this area and forecasts that 70% of office employees will interact with chatbots daily in 2022. This chapter reports on the challenges inherent in chatbot integration projects and identifies key operational factors for successful chatbot projects, as well as highlighting issues of strategic significance. Different technology adoption and project management models are explored, analysed, and applied in the context of chatbot implementation, and based on an in-depth case study, a model is put forward to aid the manageability of chatbot implementation in other similar environments.

scholarly journals Self-optimization system dynamics simulation of reservoir operating rules

2018 ◽  
Vol 246 ◽  
pp. 01013 ◽  
Author(s):  
Benjun Jia ◽  
Jianzhong Zhou ◽  
Lu Chen ◽  
Zhongzheng He ◽  
Liu Yuan ◽  
...  
Keyword(s):  
Power Generation ◽  
System Dynamics ◽  
Reservoir Operation ◽  
Goodness Of Fit ◽  
Dynamics Simulation ◽  
Term Operation ◽  
Optimization System ◽  
Operating Rules ◽  
Operation Rules ◽  
Fitting Method

Operating rules have been used widely in the reservoir long-term operation duo to its characteristics of coping with inflow uncertainty and easy implementation. And implicit stochastic optimization (ISO) has been widely applied to derive reservoir operation rules, based on linear regression or nonlinear fitting method. However, the maximum goodness-of-fit criterion of fitting method may be unreliable to determine the effective rules. Therefore, this paper develops a self-optimization system dynamics (SD) simulation of reservoir operation for optimizing the operating rules, by taking advantages of feedback loops in SD simulation. A deterministic optimization operation model is firstly established, and then resolved using dynamic programming (DP). Simultaneously, the initial operating rules (IOR) are derived using the linear fitting method. Finally, the refined optimal operating rules (OOR) are obtained by improving the IOR based on the self-optimization SD simulation. China’s Three Gorges Reservoir is used as a case study. The results show that the SD simulation is competent in simulating a complicated hydropower system with feedback and causal loops. Moreover, it makes a contribution to improve the IOR derived by fitting method within an ISO frame. And the OOR improve effectively the guarantee rate of power generation on the premise of ensuring power generation.

scholarly journals Current State and Development Prospects of Autonomous Haulage at Surface Mines

2020 ◽  
Vol 174 ◽  
pp. 01028
Author(s):  
Yuri Voronov ◽  
Artyom Voronov ◽  
Daulet Makhambayev
Keyword(s):  
Human Factor ◽  
Surface Mining ◽  
Operating Costs ◽  
Existing Problems ◽  
Surface Mines ◽  
Current State ◽  
Constituent Elements ◽  
Further Development ◽  
Development Prospects

Autonomous (or unmanned) haulage systems have been used in surface mining for more than 10 years. Most of the equipment at such mines is remotely controlled by electronics, for which they are sometimes called “smart mines”. The elimination of the “human factor” from the pro- duction process should theoretically increase its safety and productivity, as well as reduce the operating costs of its implementation. However, despite the obvious advantages of this technology, it is not spreading as fast as ex- pected. This suggests that there are a number of problems that limit its de- velopment. In this paper, a review and analysis of the experience in the in- dustrial implementation of autonomous haulage in surface mining is car- ried out in order to identify existing problems and possible directions for their further development. The prerequisites, a brief history and some im- portant results of the introduction of autonomous haulage systems in sur- face mining, their main types and constituent elements are outlined, as well as the existing problems and expected directions of their development are highlighted.

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