HTS cables offer several benefits over conventional power cables. They can carry 3-5 times the current of conventional cables due to being superconductors below a critical temperature. This allows for enhanced efficiency and reduced electricity costs. HTS cables also generate no heat or electrical losses and use liquid nitrogen, which is environmentally benign. They take up less space than conventional cables. The document discusses the construction, classification based on dielectric material and generation, and benefits of HTS cables. It also compares the resistance, inductance and capacitance of HTS, conventional and overhead power transmission technologies.

1. Presented By
Sk. Fahad

2. Content
 Overview
 What are superconductors
 Construction
 Classification of HTS cable
 Benefits
 Comparison of transmission lines
 Conclusion

3. Overview
 High Temperature Superconductors” (HTS) was
discovered in 1986.
 High-temperature superconductors (HTS) based on the
application of superconductors.
 HTS promise to revolutionize power distribution.
 HTS power cables will enable utilities to upgrade power
density.

4. SUPERCONDUCTORS
Superconductivity is a phenomenon of exactly
zero electrical resistance and expulsion of magnetic
fields occurring in certain materials when cooled below
a critical temperature.

5. Construction
 Construction of the hts cable uses traditional
stranding techniques and equipment to wind hts
wires around a hollow core.
 shield are formed by winding Bi wire around the
core.
 Insulation structure prepared by impregnating
liquid nitrogen into “Polypropylene.
 Liquid nitrogen is run through the hollow core to
cool the hts material.

6. Classification Of HTS Cable
 Based on type of dielectric material used:
 Warm dielectric cable
 Cryogenic dielectric cable
 Based on generation:
 First generation(1g)
 Second generation(2g)

7. Warm Dielectric Cable
 High power density.
 Higher electrical losses.
 conductor is surrounded by conventional
dielectric insulation.
Based on type of dielectric material used

8. Cryogenic Dielectric Cable
 Magnetic field measured outside the center of the
cable was small.
 Cryogenic dielectric reduces size.
 Flexible cable to allow reeling.
 Reduction of ac losses.
Based on type of dielectric material used

9. Based on generation
First generation(1G)
 Available since late 1990s.
 First generation superconducting wires made by the power in tube method.
 1G hts wire is prepared through a powder-in-tube process.
 1G hts wire uses a filamentary structure.
 Design is inherently costly.

10. Second generation(2G)
 Improved mechanical properties.
 Thickness is reduced and cost is low.
 Improves power quality.
 Losses are reduced.
Based on generation

11. Benefits
 Current carrying capability 3-5 times that of conventional cable.
 Enhanced overall system efficiency.
 Reduced electricity costs.
 Generates essentially no waste heat or electrical losses.
 Use of environmentally benign liquid nitrogen for cooling.
 Takes up less space than conventional cables.

12. A Comparison of Power Transmission Technologies
Technology Resistance
(Ω/km)
Inductance
(mH/km)
Capacitance
(nF/km)
Cold Dielectric HTS 0.1×10-3 0.06 257
Conventional XLPE 0.03 0.36 257
Overhead Line 0.08 1.26 8.8

13. Application
 Designed for primarily underground installations.
 Primary application in large, power-hungry areas.
 Power applications.
 High field magnets.

14. CONCLUSION

15. THANK YOU