Russian Scientific RandD Cable Institute

Moscow, Russia

Russian Scientific RandD Cable Institute

Moscow, Russia
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Vysotsky V.S.,National Research Nuclear University MEPhI | Zanegin S.Y.,Russian Scientific RandD Cable Institute | Fetisov S.S.,Russian Scientific RandD Cable Institute | Ryabov S.M.,Russian Scientific RandD Cable Institute | Zubko V.V.,Russian Scientific RandD Cable Institute
IEEE Transactions on Applied Superconductivity | Year: 2017

A common problem of superconducting devices is to survive during a fault with a current overload. At a fault, superconducting device will have strong overheating and burning out is possible. The problem becomes more serious in case if a high-temperature superconducting (HTS) wire has a weak point where the critical current is less than the average over a wire. Such a weak point could be the point of origination of strong overheating within a very localized area. This can lead to burning and destroying of an HTS device. To study this problem, we developed the experimental setup with the spatial resolution 2 mm and the time resolution 1 ms to observe a local temperature/voltage evolution in HTS tapes overloaded by currents. The preliminary experiments were performed to measure local heat/voltage development on 2G HTS tapes with an artificial weak point. Local heat/voltage evolutions have been measured and compared with calculations by our model developed earlier. © 2017 IEEE.


Fetisov S.S.,Russian Scientific RandD Cable Institute | Zubko V.V.,Russian Scientific RandD Cable Institute | Yu Zanegin S.,Russian Scientific RandD Cable Institute | Nosov A.A.,Russian Scientific RandD Cable Institute | And 2 more authors.
IEEE Transactions on Applied Superconductivity | Year: 2017

Triaxial HTS power cables are the optimal solution for low and medium voltages. This design permits to save expensive HTS conductor and to increase the power density transmitted. They could be used at medium voltages ∼10-20 kV for distribution grids. At relatively low voltages (<1-10 kV), triaxial cables could be used for ship propulsion systems or in electrical aircraft, where higher voltages are prohibited due to operational conditions. Prototypes of HTS 'triaxial' cables made of both Bi-2223 and ReBaCuO HTS wires have been developed and tested in the Russian Scientific R&D Cable Institute. The calculations to optimize the cables with three superconducting layers and outer copper shield have been performed. The optimal parameters have been determined. The Bi-based 10-m cable has been inserted in a full-size flexible cryostat with current leads developed and has been tested at dc and ac conditions. The 4-m ReBaCuO cable has been tested in a laboratory cryostat and tested at dc and ac conditions also. AC tests of both cables were performed at different frequencies from ∼37 to ∼400 Hz. The cables designs, test results, and their analysis are presented. © 2002-2011 IEEE.


Vysotsky V.S.,National Research Nuclear University MEPhI | Fetisov S.S.,Russian Scientific RandD Cable Institute | Zubko V.V.,Russian Scientific RandD Cable Institute | Zanegin S.Y.,Russian Scientific RandD Cable Institute | And 7 more authors.
IEEE Transactions on Applied Superconductivity | Year: 2017

We developed a method to combine parallel superconducting HTS tapes to a current carrying element with high current and uniform current distribution among strands at ac mode. The current carrying elements are made of several parallel HTS tapes placed side-by-side on a round mandrel. The test of the small model made of five parallel 2G HTS tapes confirmed the idea. The method was implemented for 10/0.4 kV, 1 MVA power transformer. For both low and high voltage windings, we used 12 mm Amperium tapes from American Superconductor Co. For low-voltage winding 19 parallel tapes were wound on four mandrels and connected in series. High-voltage winding was wound with a single 12 mm tape. The assembled windings of each phase were tested at liquid nitrogen temperature without iron yoke. AC losses were measured in low-voltage winding at two modes: when high voltage winding was either shortened or open. In this paper, we present the details of current carrying element development and test, 1 MVA transformers winding designs and test results. © 2002-2011 IEEE.


Vysotsky V.S.,Russian Scientific RandD Cable Institute | Blagov E.V.,Russian Academy of Sciences | Kostyuk V.V.,Russian Academy of Sciences | Nosov A.A.,Russian Scientific RandD Cable Institute | And 7 more authors.
IEEE Transactions on Applied Superconductivity | Year: 2015

In the framework of the second stage of the Russian R&D program for the development of hybrid energy transfer lines (HETLs), the new 30-m MgB2 superconducting cable with high voltage insulation has been developed and tested. The superconducting cable was inserted into a newly developed flexible 30-m hydrogen cryogenic line that has three sections with different types of thermal insulation in each section. High-voltage current leads were also developed. The superconducting cable, cryostat, and current leads have been tested in October 2013. Cable critical current was ∼3500 A at ∼21 K. Cable and current leads passed a high voltage test with 50-kV dc at liquid hydrogen temperature. The tests were performed at temperatures from 20 to 26 K, hydrogen flow from 70 to 450 g/s, and pressure from 0.25 to 0.5 MPa. It was found that the active evaporating cryostatting system as a thermal insulation practically eliminated heat transfer from room temperature to liquid hydrogen. The flexible 30-m HETL developed is able to deliver ∼ up to 60 MW of chemical power and ∼75 MW of electrical power, i.e., ∼135 MW in total. MgB2 cable design and test results of hybrid energy transfer lines are presented and discussed. © 2014 IEEE.


Zubko V.V.,Russian Scientific RandD Cable Institute | Ryabov S.M.,Russian Scientific RandD Cable Institute | Fetisov S.S.,Russian Scientific RandD Cable Institute | Vysotsky V.S.,RAS Institute for Nuclear Research
Physics Procedia | Year: 2015

Knowledge of HTS materials behavior at overload currents is important to design fault current limiters or fault protection systems of electro-technical devices. There are sharp voltage peaks and voltage oscillations during rectangular current pulses (DC current) on HTS tapes cooled by liquid nitrogen. It is common knowledge that a homogeneous liquid can withstand certain amount of overheating before switching to the boiling phase. In the liquid nitrogen during the increase of the heat flux there is superheating (temperature overshoot) and boiling hysteresis takes place. We explain voltage peaks and voltage oscillations by the hysteresis phenomenon in boiling nitrogen during the increase and decrease of the heat flux in the nitrogen which is a result of current redistribution in the HTS tapes. Based on the measurements of voltage and temperature of the HTS tapes during current overload and numerical analysis of the process we estimated the heat-transfer characteristics from the HTS tapes to liquid nitrogen. We also obtained the information about limiting superheating of the liquid nitrogen. The influence of covers of the HTS tapes on superheating of the nitrogen is also discussed. © 2015 The Authors.


Fetisov S.S.,Russian Scientific RandD Cable Institute | Sotnikov D.V.,Russian Scientific RandD Cable Institute | Zanegin S.Y.,Russian Scientific RandD Cable Institute | Bykovsky N.V.,Russian Scientific RandD Cable Institute | And 3 more authors.
Physics Procedia | Year: 2015

This paper describes the method of study of the critical current density distribution across a tape in a background magnetic field. We measured the current distribution by the scanning Hall probe method. Then we measured field across a tape by a set of 10 Hall probes placed on a single substrate. By comparison of data from these two experiments we determined positions of Hall probes at a tape. Then we measured the current distribution of current density across a tape inside a magnet in parallel and perpendicular magnetic field of 30 mT. The details of measuring method and results are presented. © 2015 The Authors.


Ipatov Y.P.,Russian Scientific RandD Cable Institute
IEEE Transactions on Applied Superconductivity | Year: 2012

New technological facilities for mass production of Cr-and Ni-coated superconducting strands and wires for the ITER project have been developed and built at the chemical and technological site in the Superconducting Wires and Cables Department of Russian Cable Institute (VNIIKP). They include the processing equipment for chemical and electrochemical pre-treatment of copper wire and superconducting strands and their subsequent Cr- and Ni-coating. The production processes and their parameters in conjunction with verification procedures ensure the required quality of strand, i.e. precise etching, chemically clean surface free of any defects before plating, thickness of coating 1.5-2.0 μm, adhesion of coatingsno flaking, designed diameter tolerance at the rate of production within 3-5 km an hour. The entire technological route has initial, intermediate and final check points for verification and confirmation of the quality of strands demanded. The facilities are equipped with devices for flow control and continuous measurement of length and diameter of coated strands and wires. All processes are based on soft technology, the six plants consume no more than 100 liters a day of distilled water altogether and have no environmental impact because they have no discharge to the main drain. © 2002-2011 IEEE.


Fetisov S.S.,Russian Scientific RandD Cable Institute | Zubko V.V.,Russian Scientific RandD Cable Institute | Radchenko I.P.,Russian Scientific RandD Cable Institute | Mukhanov S.V.,Russian Scientific RandD Cable Institute | Vysotsky V.S.,Russian Scientific RandD Cable Institute
IEEE Transactions on Applied Superconductivity | Year: 2012

A practical split coil magnet using Bi-2223 HTS tapes has been developed and tested. The design parameter is the maximal magnetic field at the aperture of a coil. 1-G Bi-2223 tape was used for magnet's winding produced by Sumitomo Electric Industry Co. The maximum magnetic field in the magnet is determined by the dependence of 1-G tape's critical current on magnetic field normal to the HTS surface of a tape. Reduction of the normal component of the magnetic field to the HTS tape was achieved by using the iron plates. The finite element modeling has been used to design the magnet configurations. The simulation results are in good agreement with the measurement data. The maximum magnetic field at the aperture of the magnet reached 0.75 T at 77.4 K with ∼1 T of maximum field on winding. The split coil is used to test anisotropy of critical currents of HTS tapes in our standard HTS wires characterization test program. The details of split coil design and magnet test results are presented. © 2002-2011 IEEE.

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