Experimental and Simulation Study of Resistive Helical HTS Fault Current Limiters: Quench and Recovery Characteristics

Abstract

Resistive type fault current limiters (SFCLs) have attracted lots of attention from research interests and engineering applications, due to its self-triggering, fast and effective fault current limitation ability. Fast recovery of SFCL after quench is highly attractive, yet still remains challenge when recover with load compared to recovering without load. We investigated the dependence of recovery time of a helical SFCL coil on the ratio of prospective current over critical current. A multilayer simulation model was built in MATLAB ® /Simulink to investigate the electro-thermal behavior of SFCL coil during a fault and recovery period, and the model was validated by experimental results. Quench simulations were carried out under different Ipros/ Ic, ranging from 15 to 119 and in different recovery conditions including recovery with load condition and recovery without load condition, while keeping the fault duration of 100 ms. We observed that the SFCL coil reached 85 K and 195 K at the time when the fault was cleared, in the quench tests with Ipros/ Ic = 15 and 119, respectively. SFCL coil recovered without load in 0.5 s to 10 s, depending on the ratio of Ipros/ Ic.  Index Terms-Helical SFCL coil, flux flow, quench, recovery.

Improved Recovery Time and Voltage Stability for Resistive Superconductor Fault Current Limiters

“…where, QRsfcl is the heat energy emitted by the R-SFCL (J), Qcryosys is the heat energy received by the cryogenic system (J), θs is the thermal resistance between R-SFCL and cryogenic system (K/W), k is the heat transfer coefficient to the cryogenic system (W/Km 2 ), ds is the superconductor diameter (m), cs is the superconductor heat capacity (J/K), cvol is the superconductor volumetric specific heat (J/Km 3 ), TRsfcl is the R-SFCL instant temperature (°K). This study takes the k coefficient as a constant to simplify the model while performing thermal calculations (Jiahui Zhu et al, 2015) (Nemdili & Belkhiat, 2012) (Manohar & Ahmed, 2012) (Elmitwally, 2009) (Langston et al, 2005) (Song et al, 2021). Today, superconducting materials are generally produced as tape.…”

Analyzing the Characteristics of Faults in a Transmission Line and High Voltage Capacitor Banks in a 115-kV-Power System Using Discrete Wavelet Transform

“…To summarise the existing research [21,22], the characteristics of fundamental system parameters in transient and recovery states were effectively analysed to verify the occurrence of faults. Additionally, applying the parameter of neutral and mathematic techniques to analyse the fault enhanced the process of fault detection [23][24][25].…”

Study on the influencing factors to reduce the recovery time of superconducting tapes and coils for the DC superconducting fault current limiter applications

“…Zhang, Zhifeng, et al studied the quench characteristics and recovery time of hightemperature superconducting tapes under high-voltage DC power supply through experiments and made theoretical contributions to the research of �200 kV DCCBs [18]. Song, Wenjuan, et al researched the quench and recovery characteristics of Resistive-type SFCLs through both experimental and simulation methods [19]. The studies pointed out that the resistance characteristics of YBCO superconducting tape are related to the material of the stable layer, and the recovery time is related to the environmental cooling conditions.…”

“…Song, Wenjuan, et al. researched the quench and recovery characteristics of Resistive‐type SFCLs through both experimental and simulation methods [19]. The studies pointed out that the resistance characteristics of YBCO superconducting tape are related to the material of the stable layer, and the recovery time is related to the environmental cooling conditions.…”