Development of a High Temperature Superconducting Power Transmission Cable

Dollen, D.W. Von; Hingorani, Narain G.; Samm, R.

doi:10.1007/978-4-431-68266-0_281

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…However, the values of L am and M aml are as small as a fifth of the values of L cm and M cml . Therefore it is necessary to increase the values of L am and M aml , which is accomplished by decreasing the lengths of the spiral pitches P m and P l , as shown in equations ( 4) and (5). Figure 6 shows the result of a calculation for AC loss as a function of the length of the spiral pitch in the case of the transport current I = 1000 A assuming that P m = P l .…”

Section: Resultsmentioning

confidence: 99%

“…This requires the development of an HTSC power cable having a diameter of less than 130-150 mm [3]. Therefore the dimensions of three-phase HTSC power-cable conductors, placed inside a steel pipe for heat insulation [4,5], are restricted. The limitation depends also on the amount of the energy loss of the HTSC power-cable conductor occurring when a current flows to the conductor.…”

Section: Introductionmentioning

confidence: 99%

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AC loss of a high- superconducting power-cable conductor

Noji

1997

Supercond. Sci. Technol.

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We investigate the AC loss of a high-T c superconducting power-cable conductor with four layers and interlayer insulation. The electric-circuit model is applied for the calculation of the AC loss of the conductor. The result of a calculation for the AC loss shows that the calculated value is nearly equal to the experimental value; therefore this model explains the electromagnetic property of the conductor well. Moreover the result of a calculation for the current distribution of the conductor indicates that almost all the current passes through the outer layer when the transport current is less than the I c of the conductor. Finally we calculate the relation between AC loss and the spiral pitch of the high-T c superconducting wires which make up the conductor. It is found that the AC loss is markedly decreased when the spiral pitch is less than 0.5 m.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

AC loss of a high- superconducting power-cable conductor

Noji

1997

Supercond. Sci. Technol.

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“…Realization of superconducting cables could provide a solution for ac or dc energy transport taking into account energy-saving and environmental aspects [5][6][7][8]. The feasibility of high-power cables now seems a possible target, owing to the recent improvements (as regards critical current density and mechanical strength) of superconducting tape performance.…”

Section: Introductionmentioning

confidence: 99%

A statistical technique for the investigation of weak points and degradation of high-temperature superconductor tapes

Montanari

Ghinello

Gherardi

et al. 1998

Supercond. Sci. Technol.

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Recent technological developments in manufacturing high-temperature superconductor (HTSC) tapes have improved their mechanical and electrical performances considerably. Now, a near future when HTSC cables will become a reality can finally be forecast. This brings about the need for work in the field of quality control and diagnostics of HTSC tapes. A new methodology for the analysis of the behaviour of tapes aged under different kinds of mechanical stresses is presented in this paper. The methodology is based on a probabilistic approach, where the two-parameter Weibull function is used to fit the cumulative and density probability distributions obtained from experimental V-I characteristics by numerical-analytical differentiation. Experimental results relevant to both long-term (aging) and short-term tests performed on 2223-BSCCO tapes are presented and discussed. It is shown that the time behaviour of Weibull function parameters provides useful information on the level of aging and on the kind of damage occurring to the tapes. In particular, the comparison between the results obtained from long-term and short-term tests, as well as from different types of mechanical stresses, points out that the shape of probability distributions constitutes a valuable diagnostic tool to distinguish between local or overall degradation and helps in identifying damage location.

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Research and development of electrical insulation of superconducting cables by extruded polymers

Kosaki

1996

IEEE Electr. Insul. Mag.

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Development of a High Temperature Superconducting Power Transmission Cable

Cited by 3 publications

References 2 publications

AC loss of a high- superconducting power-cable conductor

AC loss of a high- superconducting power-cable conductor

A statistical technique for the investigation of weak points and degradation of high-temperature superconductor tapes

Research and development of electrical insulation of superconducting cables by extruded polymers

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