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Добірка наукової літератури з теми "Заземлювальні пристрої"
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Статті в журналах з теми "Заземлювальні пристрої"
Магро, В. І., та С. В. Плаксін. "КОМП’ЮТЕРНЕ МОДЕЛЮВАННЯ ВИПРОМІНЮВАЛЬНОГО МОДУЛЯ СИСТЕМИ МОНІТОРИНГУ СОНЯЧНОЇ ЕЛЕКТРОСТАНЦІЇ". Vidnovluvana energetika, № 2(65) (28 червня 2021): 29–37. http://dx.doi.org/10.36296/1819-8058.2021.2(65).29-37.
Повний текст джерелаДисертації з теми "Заземлювальні пристрої"
Руденко, Сергій Сергійович. "Розробка засобів інтерпретації результатів зондування ґрунту". Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/26026.
Повний текст джерелаКоліушко, Денис Георгійович, Олексій Валерійович Кащеєв та Сергій Сергійович Руденко. "Оптимізація реконструкції заземлювальних пристроїв діючих енергооб'єктів". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/44027.
Повний текст джерелаРуденко, Сергій Сергійович. "Вдосконалення методів контролю та діагностики заземлювальних пристроїв діючих високовольтних енергооб'єктів України". Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/34461.
Повний текст джерелаThesis for granting Candidate of Technical sciences Degree in specialty 05.09.13 – Technics of Strong Electric and Magnetic Fields. – National Technical University "Kharkiv Polytechnic Institute", 2018. The thesis is devoted to the improvement of existing methods of determination of normalized parameters at each of the stages of electromagnetic diagnostics, as well as the creation of a qualitatively new approach to the issuance of recommendations for reconstruction a grounding grids to improve the safety of personnels on energy objects of Ukraine. The statistic of soil electrical properties to evaluate the optimal technical requirements for equipment for vertical electrical soil sounding when performing diagnostics of grounding systems is used. The model of the grounding device was based on the solution of the problem about the electrical field potential of the point current source, located in a three-layer soil. This model allows to determine the field potential at any point in case of the location of the grounding device in any of the layers of soil. Mathematical model and computer program for analyzing and interpreting results of the soil sounding by Wenner configuration was created on the base of the analytical solution for field of current point source located in four-, three- or two-layer structure. The method of equivalenting with bringing the multilayer soil to the form of the calculated models was improved. The adequacy of developed mathematical models for experimental measurements on more than 70 existing high-voltage power facility’s of Ukraine with voltage classes 35-150 kV has been checked. It was proved that the reconstruction of grounding system for requirements of touch voltage both in terms of electrical safety and in terms of material and labor costs is more effectiveness. The parametric model that allows predicting the probable material and technical costs for the reconstruction was created.
Глєбов, Олег Юрійович. "Вдосконалення заземлювальних пристроїв електричних підстанцій для забезпечення безаварійної роботи вторинних кіл". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/40844.
Повний текст джерелаThesis for granting the Degree of Candidate of Technical sciences in speciality 05.14.02 – electric stations, networks and systems. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2019. The dissertation is devoted to the improvement of grounding systems of substations with voltage 330 (220) / 150 (110) kV on the criterion of prevention of damage to the insulation of current protection cables with a lightning strike and with short-circuit on the bus of the switchgear of the specified voltage classes. On the basis of the analysis of experimental data obtained at 80 operating substations of Ukraine, independent factors are determined, as well as insignificant from a number of independent ones. On the basis of four- and five-factor experiments, a model was developed to determine the grounding systems resistance. A comparative analysis of the obtained model with known computational methods was carried out. The value of the resistance, determined by the formula of the normative document, for most substations is less than determined by the received model, therefore, is an estimate from below. On the basis of a sixfactor experiment, a model for determining the voltage on the cable insulation of the secondary circuits of the current transformer is obtained, which is the most distant from the relay panels hall, with a short circuit on the bus of the switchgear. In the paper, the procedure for the experimental determination of voltage on cable isolation during simulation of short circuit was developed. In this work a method is developed and examples are given for determination of constructive parameters and material costs of grounding systems with the use of the mathematical models obtained in the work on the criterion of prevention of damage to insulation of secondary circuits with short circuit, and according to the of prevention the false triggering of current protection in the event of damage to the cable insulation.
Глєбов, Олег Юрійович. "Вдосконалення заземлювальних пристроїв електричних підстанцій для забезпечення безаварійної роботи вторинних кіл". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/40840.
Повний текст джерелаThesis for granting the Degree of Candidate of Technical sciences in speciality 05.14.02 – electric stations, networks and systems. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2019. The dissertation is devoted to the improvement of grounding systems of substations with voltage 330 (220) / 150 (110) kV on the criterion of prevention of damage to the insulation of current protection cables with a lightning strike and with short-circuit on the bus of the switchgear of the specified voltage classes. On the basis of the analysis of experimental data obtained at 80 operating substations of Ukraine, independent factors are determined, as well as insignificant from a number of independent ones. On the basis of four- and five-factor experiments, a model was developed to determine the grounding systems resistance. A comparative analysis of the obtained model with known computational methods was carried out. The value of the resistance, determined by the formula of the normative document, for most substations is less than determined by the received model, therefore, is an estimate from below. On the basis of a sixfactor experiment, a model for determining the voltage on the cable insulation of the secondary circuits of the current transformer is obtained, which is the most distant from the relay panels hall, with a short circuit on the bus of the switchgear. In the paper, the procedure for the experimental determination of voltage on cable isolation during simulation of short circuit was developed. In this work a method is developed and examples are given for determination of constructive parameters and material costs of grounding systems with the use of the mathematical models obtained in the work on the criterion of prevention of damage to insulation of secondary circuits with short circuit, and according to the of prevention the false triggering of current protection in the event of damage to the cable insulation.
Руденко, Сергій Сергійович. "Вдосконалення методів контролю та діагностики заземлювальних пристроїв діючих високовольтних енергооб'єктів України". Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/34463.
Повний текст джерелаThesis for granting Candidate of Technical sciences Degree in specialty 05.09.13 – Technics of Strong Electric and Magnetic Fields. – National Technical University "Kharkiv Polytechnic Institute", 2018. The thesis is devoted to the improvement of existing methods of determination of normalized parameters at each of the stages of electromagnetic diagnostics, as well as the creation of a qualitatively new approach to the issuance of recommendations for reconstruction a grounding grids to improve the safety of personnels on energy objects of Ukraine. The statistic of soil electrical properties to evaluate the optimal technical requirements for equipment for vertical electrical soil sounding when performing diagnostics of grounding systems is used. The model of the grounding device was based on the solution of the problem about the electrical field potential of the point current source, located in a three-layer soil. This model allows to determine the field potential at any point in case of the location of the grounding device in any of the layers of soil. Mathematical model and computer program for analyzing and interpreting results of the soil sounding by Wenner configuration was created on the base of the analytical solution for field of current point source located in four-, three- or two-layer structure. The method of equivalenting with bringing the multilayer soil to the form of the calculated models was improved. The adequacy of developed mathematical models for experimental measurements on more than 70 existing high-voltage power facility’s of Ukraine with voltage classes 35-150 kV has been checked. It was proved that the reconstruction of grounding system for requirements of touch voltage both in terms of electrical safety and in terms of material and labor costs is more effectiveness. The parametric model that allows predicting the probable material and technical costs for the reconstruction was created.
Федосеєнко, Олена Миколаївна. "Визначення електричних характеристик заземлювальних пристроїв електроустановок на основі повного моделювання об'ємних заземлювачів". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38602.
Повний текст джерелаThe thesis for the degree of candidate of technical sciences, specialty 05.14.02 – Electric stations, networks and systems. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2018. The thesis is devoted to the important scientific and applied problem solution in improving the electrical installations grounding devices by optimizing the design parameters of complex combined grounding systems of projected or existing electrical installations by using manufactured high conductivity ground electrodes, as well as by taking into account natural concentrated grounds. The thesis research analyzes mathematical models of non-equipotential arbitraryshaped grounding device for getting grounding grid normalized parameters. The new engineering solution is got is the grounding electrode of increased current spreading conductivity, which will be realized as a vertical electrode with current installing antirust coating, placed in the limited volume of fine-dyspersated technical carbon. The mathematical model of non-potential grounding device of electrical installations has been built, which differs from the existing taking into account of volumetric grounding, located in a conducting two-layer semi-space. The developed model allows the introduction of natural grounding, as well as a vertical electrode of high conductivity, in grounding device normalized parameters computation, by the set of rectilinear electrodes.
Федосеєнко, Олена Миколаївна. "Визначення електричних характеристик заземлювальних пристроїв електроустановок на основі повного моделювання об'ємних заземлювачів". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38531.
Повний текст джерелаThe thesis for the degree of candidate of technical sciences, specialty 05.14.02 – Electric stations, networks and systems. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2018. The thesis is devoted to the important scientific and applied problem solution in improving the electrical installations grounding devices by optimizing the design parameters of complex combined grounding systems of projected or existing electrical installations by using manufactured high conductivity ground electrodes, as well as by taking into account natural concentrated grounds. The thesis research analyzes mathematical models of non-equipotential arbitraryshaped grounding device for getting grounding grid normalized parameters. The new engineering solution is got is the grounding electrode of increased current spreading conductivity, which will be realized as a vertical electrode with current installing antirust coating, placed in the limited volume of fine-dyspersated technical carbon. The mathematical model of non-potential grounding device of electrical installations has been built, which differs from the existing taking into account of volumetric grounding, located in a conducting two-layer semi-space. The developed model allows the introduction of natural grounding, as well as a vertical electrode of high conductivity, in grounding device normalized parameters computation, by the set of rectilinear electrodes.
Ніжевський, Ілля Вікторович. "Удосконалення методів модернізації і контролю параметрів заземлювального пристрою міських підстанцій". Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/32565.
Повний текст джерелаDissertation for the degree of Ph.D., specialty 05.14.02 – power stations, networks and systems. – National Technical University "Kharkiv Polytechnic Institute", Kharkov, 2017. The dissertation is devoted to the actual and practical problem of search and development of new methods for measurement of resistance of the grounding devices; developments of new designs of the grounding devices allowing to simplify reconstruction of substations; creation and enhancement of mathematical models and programs for calculation of electric characteristics of the grounding devices of any designs. The analysis of the results of the inspection of existing grounding devices of substations revealed serious violations that lead to deviation of parameters from the norm and to the need for modernization of grounding devices of substations. It is shown that the modernization of grounding devices leads to the restoration of its normalized parameters. Mathematical models of grounding devices of simple two-level structures of horizontal or ring electrodes are developed. As a result of the investigation of the electric field, it is revealed that the potential on the surface of the ground above the center of the square grounding electrode can be higher than above the electrode. The mathematical model of complex two-level grounding devices of substations is enhanced. The method of its electrical characteristics calculating is developed. The influence of the depth of the grid of the upper level of the grounding devices of the substations, the thickness of the humidification layer, the drying or freezing of the soil and the design of the grounding devices on its electrical characteristics was studied. Based on the theoretical substantiation of the method, a technique for measuring the resistance of grounding devices of substations in conditions of dense building of the territory is developed. The method is applicable for any kind of ground heterogeneity, any size and configuration of grounding devices and arbitrary placement of measuring electrodes without finding a zero potential point. Electric characteristics two-level the grounding devices of substations are experimentally researched by method of physical modeling in an electrolytic bathtub. The received results showed good coincidence to results of calculations.
Ніжевський, Ілля Вікторович. "Удосконалення методів модернізації і контролю параметрів заземлювального пристрою міських підстанцій". Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/32563.
Повний текст джерелаDissertation for the degree of Ph.D., specialty 05.14.02 – power stations, networks and systems. – National Technical University "Kharkiv Polytechnic Institute", Kharkov, 2017. The dissertation is devoted to the actual and practical problem of search and development of new methods for measurement of resistance of the grounding devices; developments of new designs of the grounding devices allowing to simplify reconstruction of substations; creation and enhancement of mathematical models and programs for calculation of electric characteristics of the grounding devices of any designs. The analysis of the results of the inspection of existing grounding devices of substations revealed serious violations that lead to deviation of parameters from the norm and to the need for modernization of grounding devices of substations. It is shown that the modernization of grounding devices leads to the restoration of its normalized parameters. Mathematical models of grounding devices of simple two-level structures of horizontal or ring electrodes are developed. As a result of the investigation of the electric field, it is revealed that the potential on the surface of the ground above the center of the square grounding electrode can be higher than above the electrode. The mathematical model of complex two-level grounding devices of substations is enhanced. The method of its electrical characteristics calculating is developed. The influence of the depth of the grid of the upper level of the grounding devices of the substations, the thickness of the humidification layer, the drying or freezing of the soil and the design of the grounding devices on its electrical characteristics was studied. Based on the theoretical substantiation of the method, a technique for measuring the resistance of grounding devices of substations in conditions of dense building of the territory is developed. The method is applicable for any kind of ground heterogeneity, any size and configuration of grounding devices and arbitrary placement of measuring electrodes without finding a zero potential point. Electric characteristics two-level the grounding devices of substations are experimentally researched by method of physical modeling in an electrolytic bathtub. The received results showed good coincidence to results of calculations.