CONTENTS. IntroductionTypes Of SCLTS vs HTSProperties Of SCEnergy ApplicationsConclusion. Introduction. Superconductors are broadly viewed as materials which have negligible resistance to the flow of electricity under low temperature conditions . The phenomenon of superconductivity was first
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1. Superconductivity in Electric Power Sector
2. CONTENTS Introduction
Types Of SC
LTS vs HTS
Properties Of SC
3. Introduction Superconductors are broadly viewed as materials which have negligible resistance to the flow of electricity under low temperature conditions .
The phenomenon of superconductivity was first observed in mercury by the Dutch physicist Heike Kamerlingh Onnes in 1911
Discovery of High Temperature superconductors in 1986 reignited interest in superconducting Power application
because of lower cooling costs.
4. What is Superconductivity? Superconductivity is a phenomenon observed in several metals and ceramic materials. When these materials are cooled to temperatures ranging from near absolute zero ( 0 K, -2730 C) to liquid nitrogen temperatures ( 77 K,
-1960 C), their electrical resistance drops with a jump down to zero.
The temperature at which
electrical resistance is zero is
called the critical temperature (Tc)
5. Types of Superconductors Used Low Temperature
7. Properties required for practical superconductors
8. Applications Superconducting Magnetic Energy Storage
Power Transmission Cable
Fault Current Limiter
9. Superconducting Magnetic Energy Storage (SMES) SMES is a device for storing and instantaneously discharging large quantities of power.
It stores electric energy in the magnetic field generated by DC current flowing through a coiled wire.
10. Components Of SMES System
Power Conditioning System
Cryogenically Cooled Refrigerator
11. How Does It Work? Stores Electric Energy in Magnetic Field
Superconductors have zero resistance to DC electrical current at low temperatures
Very low Ohmic heat dissipation
Energy stored within the coil is given by
14. Operation Of SMES System
Transmission Voltage is reduced to several hundred Volts
AC is converted into DC
DC Voltage charges the Superconducting Coil
The coil discharges and acts as a source of energy
when AC Network requires power boost
15. Advantages Of SMES
Time Delay during charge and discharge is quite short
Very High Power is available almost instantaneously
Loss of power is less than other storage method
Environmental friendly and Highly efficient
16. Power Transmission Cables Since 10% to 15% of generated electricity is dissipated in resistive losses in transmission lines, the prospect of zero loss superconducting transmission lines is appealing
In prototype superconducting transmission lines at Brookhaven National Laboratory, 1000 MW of power can be transported within an enclosure of diameter 40 cm.
18. Transformers HTS Transformer have low losses
Size and Weight are reduced by half.
HTS Transformer are cooled by Cryo Coolers rather than dielectric flammable oil
=>No Threat Of Fire hazards
19. Fault Current Limiters HTS Current Limiters Protects against disturbances such as Power Surges due to Lightning or Accidents.
HTS coils absorb excess energy due to large pulse of current within Milliseconds
HTS Current Limiters can effectively Limit the Current spikes Circuit Breaker must handle.
20. Rotating Machines Efficiency improvements near 1%
Decreased size and weight for equivalent ratings
Improved steady state and transient system performance
Reduced life-cycle costs
21. Other Applications MRI (Magnetic Resonance Imaging)
Transportation (Maglev Trains)
SQUID (Superconducting Quantum Interference Device)
22. Conclusion Further R&D is in progress to synthesize new materials which might attain superconductivity at even room temperatures
Such an invention can truly revolutionize the modern world of electronics, power & transportation