Abstract
In the article the technical analysis of existing constructive decisions concerning use of high-temperature superconducting cables is carried out. The features of the use of superconductors in electrical distribution networks are analyzed. The advantages of using high-temperature superconductors in comparison with low-temperature superconductors are established. It is determined that the use of high-temperature superconductors, due to the increased critical parameters, provides an increase in the power of transmission lines and energy saving. From the analysis it follows that high-temperature superconductor wires of 2G generation have better operational characteristics, respectively, their use is more efficient compared to wires of 1G generation. A scheme of a three-phase high-temperature superconducting power transmission network with a neutral wire is considered. The working conditions of a three-phase power network with high-temperature superconducting cables are analyzed. It is determined that the use of two cores of a high-temperature superconducting cable of a distributed power transmission system provides an increase in the throughput of electric power in distribution electric networks. Accordingly, the efficiency of electric power transmission is increased, as well as the loss of AC power and operating costs are reduced. It is shown that the use of the reactor reduces the requirements for protection devices, facilitates the operation of electrical installations, including generators of power plants, and also reduces the cost of distribution networks equipment. It is indicated that the smallest power loss in a three-phase distributed power transmission system using high-temperature superconducting cables can be achieved with a symmetrical load operation mode. The results of technical analysis can be used to develop recommendations for improving the characteristics of cable power lines.
Highlights
У статті проведено аналіз існуючих технічних рішень щодо використання високотемпературних надпровідникових кабелів у лініях електропередачі
It is determined that the use of high-temperature superconductors, due to the increased critical parameters, provides an increase in the power of transmission lines and energy saving
From the analysis it follows that hightemperature superconductor wires of 2G generation have better operational characteristics, respectively, their use is more efficient compared to wires of 1G generation
Summary
У статті проведено аналіз існуючих технічних рішень щодо використання високотемпературних надпровідникових кабелів у лініях електропередачі. Определено, что применение высокотемпературных сверхпроводников, благодаря повышенным критическим параметрам, обеспечивает повышение мощности линий электропередачи. Что наименьших потерь мощности в трехфазной системе распределенной электропередачи с использованием высокотемпературных сверхпроводниковых кабелей можно достичь при симметричном режиме работы нагрузки. З появою високотемпературних надпровідних (ВТНП) матеріалів (охолодження до температури рідкого азоту) розробки надпровідних ліній електропередачі суттєво наблизились до промислового впровадження.
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