Abstract:The paper provides information on the state of the use of direct current energy in the electric power industry of agriculture and water resource, hydraulic engineering, industry and metallurgy, irrigation, and land reclamation. Identified the need for contactless non-destructive testing of large constant currents in high-power electrical installations in irrigation, land reclamation, and hydraulic engineering. The basic requirements for contactless transducers and meters of large direct currents in circuits wi… Show more
“…It is possible to use new innovative solutions for the current transformer installed in the shortcircuit circuit. Under the leadership of Plakhtiev A.M. work is underway to create a new generation of current measuring devices and articles [8][9] show the results of the development of various options proposed by researchers, universal multidisciplinary non-contact magnetomodulation converters of large direct and alternating currents with an extended range for monitoring and control systems in the electric power industry of solar power plants, solar power plants, with direct conversion of solar energy into electrical energy using photo-and thermoelectric conversions, renewable energy sources, laser installations, as well as in industry, agriculture and water management. They differ from the well-known extended controllable range with small dimensions and weight.…”
Oiled power transformers and autotransformers 40-60 years ago are still in operation in Uzbekistan. At the same time, diagnostic methods for determining faults in transformers and autotransformers remained the same. This article partially analyzes the factors affecting the oils of power transformers and autotransformers used in the agricultural sector. It is known that transformer oil performs the functions of cooling and insulation. During use, the oil is in direct contact with air through the respiratory system. There is a process of transition of moisture and various gases in the composition of the air into the composition of the oil. By the composition of gases, it is possible to determine the reasons for the deterioration in the quality of the main and additional insulation of oil-immersed power transformers. The issues of influence on the state of insulation of marsh gases appearing inside (at the bottom) of the tank of oil transformers and partial discharges in oil-gas medium have been little studied.
“…It is possible to use new innovative solutions for the current transformer installed in the shortcircuit circuit. Under the leadership of Plakhtiev A.M. work is underway to create a new generation of current measuring devices and articles [8][9] show the results of the development of various options proposed by researchers, universal multidisciplinary non-contact magnetomodulation converters of large direct and alternating currents with an extended range for monitoring and control systems in the electric power industry of solar power plants, solar power plants, with direct conversion of solar energy into electrical energy using photo-and thermoelectric conversions, renewable energy sources, laser installations, as well as in industry, agriculture and water management. They differ from the well-known extended controllable range with small dimensions and weight.…”
Oiled power transformers and autotransformers 40-60 years ago are still in operation in Uzbekistan. At the same time, diagnostic methods for determining faults in transformers and autotransformers remained the same. This article partially analyzes the factors affecting the oils of power transformers and autotransformers used in the agricultural sector. It is known that transformer oil performs the functions of cooling and insulation. During use, the oil is in direct contact with air through the respiratory system. There is a process of transition of moisture and various gases in the composition of the air into the composition of the oil. By the composition of gases, it is possible to determine the reasons for the deterioration in the quality of the main and additional insulation of oil-immersed power transformers. The issues of influence on the state of insulation of marsh gases appearing inside (at the bottom) of the tank of oil transformers and partial discharges in oil-gas medium have been little studied.
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