Analyses and forecasts
G.I. Meshchanov, Dr. Sc. (Engineering), President of Electrocable Association
Polymers in cable industry, market behavior, prospects of production development, situation with import substitution (Continuation)
The article is based on the report made at the 72nd general meeting of the Electrocable Association members and is a continuation of the article with the same title published in issue № 5 - 2018. The author presents the analysis of the current production, consumption and peculiarities of application of cable rubbers and ingredients for their production, materials for optical cables, water-blocking materials, polyimide films and high-temperature enamels.
The prospects of import substitution of polymers purchased abroad and the tasks facing the enterprises of the Electrocable Association are shown.
import substitution; cable rubbers; ingredients for rubber compound production; optical fiber; water-blocking materials; polyimide films; high-temperature enamels; fluoropolymers.
V.G. Meshanov, Deputy General Director — Director for Development and Foreign Economic Activity of OJSC VNIIKP;
Global cable industry and basic trends of further development
The article is based on the report made at the 56 th general meeting of the International Intercable Association members. Analysis of the world economy development in 2018 is given. The cable and wire market development throughout the period up to 2018 and further trends based on the latest trends of industrial and social advancement are shown.
It is noted that the global economy is being developing with cautious optimism and there is a risk of a slowdown. The IMF cut its forecast for global growth from 3.9 % to 3.7 % in 2018. The level of global cable and wire consumption is expected to grow by 13 % in 2018 as compared to 2017 and to reach USD 225 billion in monetary terms.
Since the development trends of our society are more and more associated with the use of digital economy and smart Internet of things in everyday life of each person, the cable industry exhibits an increasing demand for cables intended for these applications. More detailed information on this matter is given further in the article.
global GDP index; manufacturing PMI; dynamics of global production output of cable and wire products (CWP); global consumption of CWP; smart Internet of things; energy industry; telecommunications industry; data transmission; superconductivity.
E.B. Vasiliev, Cand. Sc. (Economics), Deputy General Director of OJSC VNIIKP;
E.V. Lenskaya, Cand. Sc. (Philology), Director for Foreing Economic Activity of JSCd. Trade House of VNIIKP
Facts and myths about the cable industry of China
The article deals with the performance of the cable industry of China, its achievements, potentials and current problems. The authors describe the Russian-Chinese cooperation in the cable industry, in particular, the collaboration of the specialists of VNIIKP and the Shanghai Electric Cable Research Institute (SECRI). Information about the Asian Wire & Cable Industry Cooperation Alliance (AWCCA) and the performance of some Chinese cable plants is presented.
cable industry of China; nuclear power industry of China; SECRI; the AWCCA General Assembly; Wire China 2018; Tongding Group.
Science and technology
I.V. Antyukhov, Research Scientist, Aerospace Thermal Engineering Department, MAI;
K.S. Marinin, Head of Section, OJSC VNIIKP;
A.A. Nosov, Cand. Sc. (Engineering), Senior Research Scientist, OJSC VNIIKP;
L.V. Potanina, Cand. Sc. (Engineering), Leading Research Scientist, OJSC VNIIKP;
V.P. Firsov, Head of Section, Scientific Research Center of New Technologies, MAI;
, Cand. Sc. (Engineering), Research Scientist, Scientific Research Center of New Technologies, MAI
Hybride power lines with superconducting cables — optimization of thermostatting and cable terminations
A new method of energy carriers transportation with the help of a hybride power line is described. This method involves the combination of pipelines for liquefied hydrogen transportation with power cable transmission lines with the use of an evaporating cryostatting system which provides the required temperature conditions for the operation of superconductors in long-distance superconducting circuits. Traditional methods of protection against heat inflows with the use of only passive heat insulation, including a nitrogen screen, do not allow to solve this problem.
Mathematical methods were developed for the calculation of long-length high temperature superconducting cables with an evaporating cryostatting system. Experiments with a 30 m long prototype of a hybrid power transmission line with liquid hydrogen confirm the reasonability of the above decisions. Optimal designs of cryogenic terminations – current leads are considered.
Problems of ensuring dielectric strength in a long-length hydrogen cryostat and current leads were solved. The results of the hydrogen tests confirmed the high dielectric strength of the construction elementsd.
superconductivity; liquid hydrogen; superconducting cable; current leads; power industry; hybrid energy system; evaporating cryostatting system.
V.S. Vysotsky, Dr. Sc. (Engineering), Director of Research Area — Division Manager of OJSC VNIIKP;
S.Yu.Zanegin, Senior Engineer of OJSC VNIIKP;
V.V.Zubko, Dr. Sc. (Engineering), Leading research Scientist of OJSC VNIIKP;
S.S. Fetisov, Cand. Sc. (Engineering), Deputy Division Manager for Science — Head of Laboratory of OJSC VNIIKP
Optimization of compact high-temperature superconducting cable designs
The JSC VNIIKP specialists are currently working on the problem of reducing the weight and dimensions of high-temperature superconducting cables (HTSC) for such applications as electric aircrafts or ship propulsion systems. Earlier a prototype of a compact cable with three layers of 2G HTSC-tapes in the current-carrying element (CCE) and two layers of 2G HTSC-tapes in the screen was developed. As a continuation of this work we developed a new cable design with four layers of 2G HTSC-tapes in the CCE and two layers in the screen. For this cable a thin 2G HTSC-tape of 3 mm width was used for the first time in the CCE layers; this allowed to decrease the polygonality and optimize the gaps between the tapes in the layers. The work includes a numerical optimization of the cable with an analysis of the influence of the errors made during the cable manufacture in the HTSC-tape application pitch and in the inner layer diameter on the current distribution. The manufactured prototype was subjected to electrical and mechanical tests. The electrical tests confirmed the compliance of the actual cable parameters with the calculated values. The measured AC losses in the compact 2G HTSC-tape based cable were in close agreement with the losses in the previously tested cables. Therefore, the feasibility of manufacturing compact HTSC-cables with uniform current distribution in the layers was confirmed.
HTSC-cables; design optimization; pitch of tape application in a layer; polygonality; intertape gaps in layers; influence of deformation on current characteristics.
Cable world news
I. B. Peshkov, Dr. Sc. (Engineering), Proffesor, President of International Intercable Association
Global cable industry, current state, development and environmental issues