Experimental Study on the Lightning Impulse Dielectric Characteristics of Sub-Cooled Liquid Nitrogen for a High Voltage Superconducting Fault Current Limiter

As one of the most applicable to high-voltage network superconducting fault current limiterSCFCL(saturated core superconducting fault current limiter) ,which use of core saturation properties can be achieved the current-limiting function without delay ,will be the most widely applied in the future,By analyzing the working principle of SCFCL,this paper use of PSCAD and finite element analysis software Ansoft to build the 500kV\/3150A grade SCFCL model and accurate calculation coil self-inductance and mutual inductance, the harmonic of each size and analyzed its Impedance characteristic on the different external parameters,The results show that SCFCL has a excellent performance for high voltage power network short-circuit current limitation, and provides important reference for design.

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Superconducting fault current limiter operating in liquid nitrogen

2014 ELEKTRO ◽

10.1109/elektro.2014.6848980 ◽

2014 ◽

Author(s):

Fedor Gomory ◽

Milos Mosat' ◽

Jan Souc

Keyword(s):

Liquid Nitrogen ◽

Fault Current ◽

Fault Current Limiter ◽

Superconducting Fault Current Limiter ◽

Current Limiter

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An experimental study on a fast self-acting magnetic shield type superconducting fault current limiter

IEEE Transactions on Applied Superconductivity ◽

10.1109/tasc.2002.1018538 ◽

2002 ◽

Vol 12 (1) ◽

pp. 868-871 ◽

Cited By ~ 13

Author(s):

T. Onishi ◽

M. Kawasumi ◽

K. Sasaki ◽

R. Akimoto

Keyword(s):

Experimental Study ◽

Fault Current ◽

Fault Current Limiter ◽

Magnetic Shield ◽

Superconducting Fault Current Limiter ◽

Current Limiter

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First Superconducting Fault Current Limiter in Russian Power Grid

Elektrichestvo ◽

10.24160/0013-5380-2021-4-4-16 ◽

2021 ◽

Vol 4 (4) ◽

pp. 4-16

Author(s):

Michael E. MOZAH ◽

◽

Sergey V. SAMOYLENKOV ◽

Andrey P. VAVILOV ◽

Evgeny P. PROKHOROV ◽

...

Keyword(s):

Power System ◽

High Voltage ◽

Short Circuit ◽

Relay Protection ◽

Short Circuit Current ◽

Fault Current ◽

Fault Current Limiter ◽

Superconducting Fault Current Limiter ◽

Current Limiter ◽

Technical Solutions

Superconducting fault current limiter (SFCL) is an innovative method for reducing the level of short-circuit currents in high-voltage electrical networks. This reduces the number of points of separation of the electrical network in conditions of short-circuit current limitation and thereby increases the network capacity and reliability of power supply to consumers. At the same time, the development of such devices poses new challenges for power engineers related to the integration of this equipment into the existing power system. The article discusses the process of implementation and pilot operation of the SFCT 220 kV pilot project (produced by CJSC “SuperOx”) at the 220/20 kV “Mnevniki” high-voltage substation in Moscow. The project required an extensive set of scientific studies and tests to confirm the characteristics of new devices and the possibility of their use in Russian power systems, the use of digital modeling technologies to test the operability of relay protection devices, as well as the development of new methodological documents for calculating the short-circuit current and relay protection parameters. As a result of the work, SFCT was switched on at the 220/20 kV “Mnevniki” substation at the end of 2019. The subsequent operation of the SFCT in 2019-2020 fully confirmed the declared characteristics of the device and the correctness of the selected technical solutions. The article is devoted to the features of the process of integrating a new device into the existing power system, the main technical solutions, the results of testing and operation of the device, as well as possible prospects for the development of SFCT technology.

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