Pub Date : 2023-06-29DOI: 10.31498/2225-6733.46.2023.288185
O.V. Maranov
The aim of the study is to improve approaches to monitoring and control of electronic systems of water transport, as well as navigation support itself, to improve navigation safety by developing a method for monitoring and improving the accuracy characteristics of shipboard satellite navigation equipment in real operating conditions. The article considers the importance of modern ship radio navigation systems for ensuring safety of navigation and highlights the limitations that may arise during operation of these systems. In this regard, the authors of the article propose an approach to monitoring and improving the accuracy of satellite navigation equipment of a ship in real conditions of ship operation. The article considers the use of a ground-based control and measurement station to control the precise characteristics of shipboard satellite navigation equipment. This station is installed on shore and operates based on the basic equation of metrology. The positioning system of a laser locator ship is described as follows: The GPS navigation spacecraft sends a laser beam to an optical angle reflector mounted on the vessel, and then a ground-based control and measurement station measures the time it takes for the laser beam to travel to and from the reflector, which allows the distance to the vessel to be calculated. The data is then transmitted to user equipment on the ship, which uses it in conjunction with the spacecraft's GPS navigation data to determine the ship's location, time and speed. The features of this approach are its high accuracy and applicability in various conditions, including poor visibility. To consider the geometric differences between the antennas of the ground control and measuring station and the user's equipment, as well as to consider the roll and pitch, the authors propose to use geometric ratios. The use of the method of accuracy control of shipboard satellite navigation equipment based on a ground-based control and measuring station proposed in the article allows to determine errors with high accuracy in various conditions of real operation, which contributes to the improvement of navigation safety
{"title":"Method for monitoring and improving the accuracy characteristics of shipboard satellite navigation equipment","authors":"O.V. Maranov","doi":"10.31498/2225-6733.46.2023.288185","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288185","url":null,"abstract":"The aim of the study is to improve approaches to monitoring and control of electronic systems of water transport, as well as navigation support itself, to improve navigation safety by developing a method for monitoring and improving the accuracy characteristics of shipboard satellite navigation equipment in real operating conditions. The article considers the importance of modern ship radio navigation systems for ensuring safety of navigation and highlights the limitations that may arise during operation of these systems. In this regard, the authors of the article propose an approach to monitoring and improving the accuracy of satellite navigation equipment of a ship in real conditions of ship operation. The article considers the use of a ground-based control and measurement station to control the precise characteristics of shipboard satellite navigation equipment. This station is installed on shore and operates based on the basic equation of metrology. The positioning system of a laser locator ship is described as follows: The GPS navigation spacecraft sends a laser beam to an optical angle reflector mounted on the vessel, and then a ground-based control and measurement station measures the time it takes for the laser beam to travel to and from the reflector, which allows the distance to the vessel to be calculated. The data is then transmitted to user equipment on the ship, which uses it in conjunction with the spacecraft's GPS navigation data to determine the ship's location, time and speed. The features of this approach are its high accuracy and applicability in various conditions, including poor visibility. To consider the geometric differences between the antennas of the ground control and measuring station and the user's equipment, as well as to consider the roll and pitch, the authors propose to use geometric ratios. The use of the method of accuracy control of shipboard satellite navigation equipment based on a ground-based control and measuring station proposed in the article allows to determine errors with high accuracy in various conditions of real operation, which contributes to the improvement of navigation safety","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-29DOI: 10.31498/2225-6733.46.2023.288184
A.I. Golovan
In today's ever-changing world, maritime transportation, and cargo ships, specifically, hold a crucial position in global supply chains and international trade. Guaranteeing the reliability, effectiveness, and safety of their operations is an increasingly urgent concern, as unexpected malfunctions and inadequacies in maintenance systems have the potential to cause significant losses, lengthy delays, and environmental hazards. In this regard, developing effective strategies to enhance the quality and efficiency of cargo ship maintenance systems is crucial. Digital technologies and innovative approaches can resolve various issues related to predicting breakdowns, optimizing maintenance processes, and monitoring equipment conditions. Nevertheless, delayed implementation of these strategies can result in loss of competitiveness and unnecessary expenses. The objective of this article is to devise a conceptual solution that enhances the efficiency of cargo ship maintenance systems through digital strategies. By assessing existing approaches, substantiating their pros and cons, the author endeavors to recognize the most apt methodologies and resolutions that enhance maintenance productivity, curtail expenses, and guarantee safe navigation. The concrete necessity to design digital strategies for cargo ship maintenance highlights the importance of this study. By analyzing the current research in the field, this study aims to enhance waterborne transport efficiency and address key issues in the transportation sector. The implementation of digital strategies in cargo ship maintenance would enhance the efficiency of the maintenance system. Thanks to these tools, the system will become more adaptable, predictable, and resource-efficient, ultimately improving the quality of maintenance, and lowering costs
{"title":"Formation of digital strategies for solving problems of increasing the efficiency of cargo ship maintenance systems","authors":"A.I. Golovan","doi":"10.31498/2225-6733.46.2023.288184","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288184","url":null,"abstract":"In today's ever-changing world, maritime transportation, and cargo ships, specifically, hold a crucial position in global supply chains and international trade. Guaranteeing the reliability, effectiveness, and safety of their operations is an increasingly urgent concern, as unexpected malfunctions and inadequacies in maintenance systems have the potential to cause significant losses, lengthy delays, and environmental hazards. In this regard, developing effective strategies to enhance the quality and efficiency of cargo ship maintenance systems is crucial. Digital technologies and innovative approaches can resolve various issues related to predicting breakdowns, optimizing maintenance processes, and monitoring equipment conditions. Nevertheless, delayed implementation of these strategies can result in loss of competitiveness and unnecessary expenses. The objective of this article is to devise a conceptual solution that enhances the efficiency of cargo ship maintenance systems through digital strategies. By assessing existing approaches, substantiating their pros and cons, the author endeavors to recognize the most apt methodologies and resolutions that enhance maintenance productivity, curtail expenses, and guarantee safe navigation. The concrete necessity to design digital strategies for cargo ship maintenance highlights the importance of this study. By analyzing the current research in the field, this study aims to enhance waterborne transport efficiency and address key issues in the transportation sector. The implementation of digital strategies in cargo ship maintenance would enhance the efficiency of the maintenance system. Thanks to these tools, the system will become more adaptable, predictable, and resource-efficient, ultimately improving the quality of maintenance, and lowering costs","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-29DOI: 10.31498/2225-6733.46.2023.288126
V.V. Suglobov, К.V. Tkachuk
The issue of modernization of cargo flow mechanization schemes, while optimizing logistics costs with the aim of increasing port capacity, was considered. The process of cargo transshipment using various lifting and transport machines is studied, the schemes of complex mechanization of port terminals are presented. The main schemes of complex mechanization in the port are analyzed on the example of transportation of artificial cargo - slab. The leading link of these schemes is the gantry crane, for which a dynamic 3D model has been developed, which allows you to create a scenario of the transport operation using simulation systems. With the help of the simulator, it is possible to evaluate indicators of performance and reliability of the crane. The results of the calculations of the characteristics of the warehouse, its capacity and the layout of the slabs are given. To build a logistics algorithm for cargo transportation operations, input data (structure of freight traffic, energy costs, logistics costs), objects (lifting and transport equipment, ships, railway transport) and output information in the form of a report with simulation results are determined. The paper proposes an algorithm for the simulation model of the port transshipment complex, which allows you to visualize the technological process of transshipment operations and optimize the parameters according to the specified quality criteria. The materials of the article can be useful to specialists of the mechanization services of sea and river ports, as well as used in the educational process as tasks for laboratory, practical and course work
{"title":"Improving the mechanism of port handling complexes","authors":"V.V. Suglobov, К.V. Tkachuk","doi":"10.31498/2225-6733.46.2023.288126","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288126","url":null,"abstract":"The issue of modernization of cargo flow mechanization schemes, while optimizing logistics costs with the aim of increasing port capacity, was considered. The process of cargo transshipment using various lifting and transport machines is studied, the schemes of complex mechanization of port terminals are presented. The main schemes of complex mechanization in the port are analyzed on the example of transportation of artificial cargo - slab. The leading link of these schemes is the gantry crane, for which a dynamic 3D model has been developed, which allows you to create a scenario of the transport operation using simulation systems. With the help of the simulator, it is possible to evaluate indicators of performance and reliability of the crane. The results of the calculations of the characteristics of the warehouse, its capacity and the layout of the slabs are given. To build a logistics algorithm for cargo transportation operations, input data (structure of freight traffic, energy costs, logistics costs), objects (lifting and transport equipment, ships, railway transport) and output information in the form of a report with simulation results are determined. The paper proposes an algorithm for the simulation model of the port transshipment complex, which allows you to visualize the technological process of transshipment operations and optimize the parameters according to the specified quality criteria. The materials of the article can be useful to specialists of the mechanization services of sea and river ports, as well as used in the educational process as tasks for laboratory, practical and course work","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-29DOI: 10.31498/2225-6733.46.2023.288125
A.O. Ishchenko, D.O. Rassokhin, O.V. Nosovska
In recent years, polymer materials with various adhesive compounds based on epoxy resins, polyesters, polyurethanes, polyacrylics, and others enriched with fine-dispersed metallic and other fillers have found wide application in various industrial sectors for equipment repair. These composite repair materials have excellent adhesive properties when applied to metal surfaces, and when combined with their high strength and the ability to transition from a plastic to a solid state without shrinkage in a short period of time, they provide a broad range of applications in solving repair problems. A technology for restoring the original dimensions of equipment parts using composite materials has been developed, eliminating the need for welding and milling. Numerous industrial tests have shown that composite materials allow solving a range of serious repair problems in rolling production, particularly on heavily loaded sheet rolling stands and blooming mills when restoring worn contact surfaces of this equipment. An original technology for the application of composite materials was developed at the Pryazovskyi State Technical University (Mariupol, Ukraine), which allowed for a unique repair operation at one of the metallurgical plants, involving the installation of a new blooming mill housing onto old worn plates with wear of up to 7 mm at certain points. These composite repair materials have excellent adhesion properties when applied to metal surfaces, which, in combination with their high strength and the ability to transition from a plastic to a solid state without shrinkage in a short period of time, provide a wide range of applications in solving repair problems. Additionally, there are cases of damage to certain types of machinery that are either impossible to repair using traditional methods or require significant material and time investments for restoration
{"title":"Restoration of rolled equipment using composite materials","authors":"A.O. Ishchenko, D.O. Rassokhin, O.V. Nosovska","doi":"10.31498/2225-6733.46.2023.288125","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288125","url":null,"abstract":"In recent years, polymer materials with various adhesive compounds based on epoxy resins, polyesters, polyurethanes, polyacrylics, and others enriched with fine-dispersed metallic and other fillers have found wide application in various industrial sectors for equipment repair. These composite repair materials have excellent adhesive properties when applied to metal surfaces, and when combined with their high strength and the ability to transition from a plastic to a solid state without shrinkage in a short period of time, they provide a broad range of applications in solving repair problems. A technology for restoring the original dimensions of equipment parts using composite materials has been developed, eliminating the need for welding and milling. Numerous industrial tests have shown that composite materials allow solving a range of serious repair problems in rolling production, particularly on heavily loaded sheet rolling stands and blooming mills when restoring worn contact surfaces of this equipment. An original technology for the application of composite materials was developed at the Pryazovskyi State Technical University (Mariupol, Ukraine), which allowed for a unique repair operation at one of the metallurgical plants, involving the installation of a new blooming mill housing onto old worn plates with wear of up to 7 mm at certain points. These composite repair materials have excellent adhesion properties when applied to metal surfaces, which, in combination with their high strength and the ability to transition from a plastic to a solid state without shrinkage in a short period of time, provide a wide range of applications in solving repair problems. Additionally, there are cases of damage to certain types of machinery that are either impossible to repair using traditional methods or require significant material and time investments for restoration","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-29DOI: 10.31498/2225-6733.46.2023.288122
I. Marchenko, O. Balalaieva, A. Serhiienko, O. Kior
The article provides material on monitoring a person's mental health using modern psychological approaches and information technologies. IT products in the field of mental health can be implemented as Telegram bots, mobile applications, desktop applications, websites, social networks, etc. An analysis of available software for collecting and analyzing data on a person's psychological state, his mood, sleep patterns, the presence of signs of depression, various types of disorders, etc. was carried out. It was revealed that the main drawback of the existing software products is the lack of certification of tests and confirmation of the use of scientifically based methods for the interpretation of the obtained results. The work presents its own software for monitoring a person's mental health, which is based on the methods of cognitive-behavioral therapy. The product is implemented in the format of a desktop application written in Python using standard GUI library Tkinter and additional libraries CustomTkinter and, TTKBOOTSTRAP. The main purpose of the developed software product is to allow the user to monitor his own psychological health, including tracking mood, anxiety level, emotional state, stress level, sleep quality, etc. The app also provides helpful tips and advice on maintaining mental health and reducing stress. Functional capabilities of the application allow a person to conduct preliminary self-diagnosis to detect depression, SAD, OCD, PTSD, anxiety and cognitive disorder, as well as use SMER tables and a notebook for further self-analysis. When creating the program, an object-oriented approach was used with the use of algorithms for optimal button generation and survey generation using frames. To test the developed software and the mathematical model that underlies it, experimental studies were carried out in real time on the recognition of gestures of the sign language
{"title":"Development of an application for monitoring human mental health based on cognitive-behavioral therapy methods using Python and library Tkinter","authors":"I. Marchenko, O. Balalaieva, A. Serhiienko, O. Kior","doi":"10.31498/2225-6733.46.2023.288122","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288122","url":null,"abstract":"The article provides material on monitoring a person's mental health using modern psychological approaches and information technologies. IT products in the field of mental health can be implemented as Telegram bots, mobile applications, desktop applications, websites, social networks, etc. An analysis of available software for collecting and analyzing data on a person's psychological state, his mood, sleep patterns, the presence of signs of depression, various types of disorders, etc. was carried out. It was revealed that the main drawback of the existing software products is the lack of certification of tests and confirmation of the use of scientifically based methods for the interpretation of the obtained results. The work presents its own software for monitoring a person's mental health, which is based on the methods of cognitive-behavioral therapy. The product is implemented in the format of a desktop application written in Python using standard GUI library Tkinter and additional libraries CustomTkinter and, TTKBOOTSTRAP. The main purpose of the developed software product is to allow the user to monitor his own psychological health, including tracking mood, anxiety level, emotional state, stress level, sleep quality, etc. The app also provides helpful tips and advice on maintaining mental health and reducing stress. Functional capabilities of the application allow a person to conduct preliminary self-diagnosis to detect depression, SAD, OCD, PTSD, anxiety and cognitive disorder, as well as use SMER tables and a notebook for further self-analysis. When creating the program, an object-oriented approach was used with the use of algorithms for optimal button generation and survey generation using frames. To test the developed software and the mathematical model that underlies it, experimental studies were carried out in real time on the recognition of gestures of the sign language","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-29DOI: 10.31498/2225-6733.46.2023.288087
Kh.V. Lipianina-Honcharenko, I.R. Kit
The article is dedicated to the development of a new method of improvement advertising texts based on the use of generative models. Advertising content plays a crucial role in modern marketing, as it fosters a brand's interaction with the audience and attracts new customers. However, creating effective advertising content often presents a challenge. Generative models open up new opportunities for creating advertising texts. They can be used to automate the process of content creation, providing a high level of originality and creativity. Specifically, this article focuses on the use of GPT series models for generating advertising texts. The first task within this research is to study the theoretical basis of generative models and their capabilities for text creation. The authors conduct a detailed analysis of the main principles of these models' operation, as well as their potential use in the context of advertising text. Further, the article describes a method of collecting and preparing input data for training generative models. Since the quality of output texts heavily depends on the quality of input data, this stage is important for the successful application of generative models. Next, the authors develop an algorithm for training the generative model based on the collected data. They describe the process of selecting optimal hyperparameters for the model, which is vital to achieve the best results. The approach presented in this article is a significant contribution to developing new methods for optimizing advertising texts. It has considerable potential for use in the marketing sphere, where there is a need to quickly and effectively generate large volumes of content. At the same time, the research results may be useful for further scientific studies in this field
{"title":"The method of improving advertising texts based on the use of generative models","authors":"Kh.V. Lipianina-Honcharenko, I.R. Kit","doi":"10.31498/2225-6733.46.2023.288087","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288087","url":null,"abstract":"The article is dedicated to the development of a new method of improvement advertising texts based on the use of generative models. Advertising content plays a crucial role in modern marketing, as it fosters a brand's interaction with the audience and attracts new customers. However, creating effective advertising content often presents a challenge. Generative models open up new opportunities for creating advertising texts. They can be used to automate the process of content creation, providing a high level of originality and creativity. Specifically, this article focuses on the use of GPT series models for generating advertising texts. The first task within this research is to study the theoretical basis of generative models and their capabilities for text creation. The authors conduct a detailed analysis of the main principles of these models' operation, as well as their potential use in the context of advertising text. Further, the article describes a method of collecting and preparing input data for training generative models. Since the quality of output texts heavily depends on the quality of input data, this stage is important for the successful application of generative models. Next, the authors develop an algorithm for training the generative model based on the collected data. They describe the process of selecting optimal hyperparameters for the model, which is vital to achieve the best results. The approach presented in this article is a significant contribution to developing new methods for optimizing advertising texts. It has considerable potential for use in the marketing sphere, where there is a need to quickly and effectively generate large volumes of content. At the same time, the research results may be useful for further scientific studies in this field","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-29DOI: 10.31498/2225-6733.46.2023.288179
A.O. Postil, O.V. Bialobrzheskyi
The analysis of systems using dual power generators revealed a variety of models, most of which are built in the α-β and d-q coordinate systems. Models and control systems are made taking into account the unbalance of the voltage of the electrical network. A model of a three-phase dual-supply generator with the possibility of introducing asymmetry of the electrical parameters of the stator and rotor has been synthesized. Modes with symmetric and asymmetric parameters of the machine windings were modeled. Unbalance is implemented by changing the inductance and resistance of one of the stators and/or rotor phases. In both cases, the required generation mode was obtained both in terms of voltage frequency and its effective value. In the case of unbalance parameters of the windings, asymmetry of the generated voltage and the occurrence of pulsations of the electromagnetic moment with a frequency of 100 Hz were noted. Using the approach to the analysis of the electric power caused by the voltage and current of positive, negative and zero sequences, according to the simulation results, it was noted that in the case of asymmetry, along with the appearance of the components of the negative sequence power, changes in the components of the positive sequence power occur. The indicated power components increase with increasing asymmetry of machine parameters
{"title":"Double feed inductor generator mathematical model for studying generation modes with unbalance of electrical machine parameters","authors":"A.O. Postil, O.V. Bialobrzheskyi","doi":"10.31498/2225-6733.46.2023.288179","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288179","url":null,"abstract":"The analysis of systems using dual power generators revealed a variety of models, most of which are built in the α-β and d-q coordinate systems. Models and control systems are made taking into account the unbalance of the voltage of the electrical network. A model of a three-phase dual-supply generator with the possibility of introducing asymmetry of the electrical parameters of the stator and rotor has been synthesized. Modes with symmetric and asymmetric parameters of the machine windings were modeled. Unbalance is implemented by changing the inductance and resistance of one of the stators and/or rotor phases. In both cases, the required generation mode was obtained both in terms of voltage frequency and its effective value. In the case of unbalance parameters of the windings, asymmetry of the generated voltage and the occurrence of pulsations of the electromagnetic moment with a frequency of 100 Hz were noted. Using the approach to the analysis of the electric power caused by the voltage and current of positive, negative and zero sequences, according to the simulation results, it was noted that in the case of asymmetry, along with the appearance of the components of the negative sequence power, changes in the components of the positive sequence power occur. The indicated power components increase with increasing asymmetry of machine parameters","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-29DOI: 10.31498/2225-6733.46.2023.288176
V.Р. Russkikh, Yu.V. Khavalits
The article shows that climate change is not only warming, but also extraordinary natural phenomena (droughts, floods, storms, tornadoes etc), which lead to significant economic damage. Climate warming is caused by increasing concentrations of greenhouse gases in the earth's atmosphere. The main task is to reduce carbon dioxide emissions. An analysis has been carried out of international documents such as the Kyoto Protocol, the Paris Climate Agreement, aimed at reducing greenhouse gas emissions into the atmosphere. It is shown that a significant amount of CO2 enters the atmosphere during the production of pig iron and steel, the data on the amount of carbon dioxide emissions from steel smelting in Ukraine and at «Azovsteel» iron and steel works have been provided. The article contains a critical analysis of the existing steel production technology, which is highly efficient but requires significant capital investment, fuel and energy resources, the source of which is the product of heat treatment of hard coal – coke, its carbon in the form of CO2 entering the atmosphere. Numerous proposed methods of steel production without the use of this coke are considered. One of the directions was the production of sponge iron without melting, another direction of coke-free metallurgy was high-temperature processes of obtaining liquid metal, that are carried out in one stage. The theoretically required amount of reducing agent at of iron with carbon monoxide and hydrogen has been determined. Methods of producing renewable gas by conversion of natural gas and gasification of coal are considered. The plans of the Metinvest Group management to develop a long-term technological strategy for metallurgical production taking into account environmental requirements are presented
{"title":"On transition to hydrogen metallurgy","authors":"V.Р. Russkikh, Yu.V. Khavalits","doi":"10.31498/2225-6733.46.2023.288176","DOIUrl":"https://doi.org/10.31498/2225-6733.46.2023.288176","url":null,"abstract":"The article shows that climate change is not only warming, but also extraordinary natural phenomena (droughts, floods, storms, tornadoes etc), which lead to significant economic damage. Climate warming is caused by increasing concentrations of greenhouse gases in the earth's atmosphere. The main task is to reduce carbon dioxide emissions. An analysis has been carried out of international documents such as the Kyoto Protocol, the Paris Climate Agreement, aimed at reducing greenhouse gas emissions into the atmosphere. It is shown that a significant amount of CO2 enters the atmosphere during the production of pig iron and steel, the data on the amount of carbon dioxide emissions from steel smelting in Ukraine and at «Azovsteel» iron and steel works have been provided. The article contains a critical analysis of the existing steel production technology, which is highly efficient but requires significant capital investment, fuel and energy resources, the source of which is the product of heat treatment of hard coal – coke, its carbon in the form of CO2 entering the atmosphere. Numerous proposed methods of steel production without the use of this coke are considered. One of the directions was the production of sponge iron without melting, another direction of coke-free metallurgy was high-temperature processes of obtaining liquid metal, that are carried out in one stage. The theoretically required amount of reducing agent at of iron with carbon monoxide and hydrogen has been determined. Methods of producing renewable gas by conversion of natural gas and gasification of coal are considered. The plans of the Metinvest Group management to develop a long-term technological strategy for metallurgical production taking into account environmental requirements are presented","PeriodicalId":31573,"journal":{"name":"Visnik Priazovs''kogo Derzgavnogo Tehnicnogo Universitetu Seria Tehnicni Nauki","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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