66 kV-2 kA peak load test of high-Tc superconducting model cable

Miura, Osuke; Tanaka, Satoru; Miyoshi, K.; Ichiyanagi, N.; Tanaka, Yasuzô; Ishii, Hideo; Hara, T.

doi:10.1016/0011-2275(96)00023-9

Cited by 19 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The windings and high-voltage bushings will operate in 70-K, 2-bar single-phase nitrogen. Although concepts and development projects for cryogenic bushings date back nearly four decades and have been described many times previously, these bushings were generally purpose-built for each project [1][2][3][4][5][6][7][8][9][10]. For HTS power equipment to be reliable and economically competitive, an off-the-shelf commercial source is preferable.…”

Section: Introductionmentioning

confidence: 99%

Cryogenic lifetime tests on a commercial epoxy resin high voltage bushing

Schwenterly

Pleva

2012

AIP Conference Proceedings

View full text Add to dashboard Cite

High-temperature superconducting (HTS) power devices operating in liquid nitrogen frequently require high-voltage bushings to carry the current leads from the superconducting windings to the room temperature grid connections. Oak Ridge National Laboratory (ORNL) is collaborating with Waukesha Electric Systems (WES), SuperPower (SP), and Southern California Edison (SCE) to develop and demonstrate an HTS utility power transformer. Previous dielectric high voltage tests in support of this program have been carried out in test cryostats with commercial epoxy resin bushings from Electro Composites Inc. (ECI). Though the bushings performed well in these short-term tests, their long-term operation at high voltage in liquid nitrogen (LN) needs to be verified for use on the utility grid. Long-term tests are being carried out on a sample 28-kV-rms-class ECI bushing. The bushing has a monolithic cast, cycloaliphatic resin body and is fire-and shatter-resistant. The test cryostat is located in an interlocked cage and is continuously energized at 25 kVac rms. LN is automatically refilled every 9.5 hours. Partial discharge, capacitance, and leakage resistance tests are periodically performed to check for deviations from factory values. At present, over 2400 hours have been accumulated with no changes in these parameters. The tests are scheduled to run for four to six months.

show abstract

Section: Introductionmentioning

confidence: 99%

Cryogenic lifetime tests on a commercial epoxy resin high voltage bushing

Schwenterly

Pleva

2012

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

“…One example of the introduction of an HTSC power cable is as a replacement for an ordinary copper cable in an existing duct. 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.…”

Section: Introductionmentioning

confidence: 99%

AC loss of a high- superconducting power-cable conductor

Noji

1997

Supercond. Sci. Technol.

View full text Add to dashboard Cite

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.

show abstract

High Temperature Superconducting Cables

Tønnesen

Østergaard

2004

High Temperature Superconductivity 2

View full text Add to dashboard Cite

66 kV-2 kA peak load test of high-Tc superconducting model cable

Cited by 19 publications

References 3 publications

Cryogenic lifetime tests on a commercial epoxy resin high voltage bushing

Cryogenic lifetime tests on a commercial epoxy resin high voltage bushing

AC loss of a high- superconducting power-cable conductor

High Temperature Superconducting Cables

Contact Info

Product

Resources

About