Current Limiting and Interrupting Operations of Flux-Lock Type SFCLI Using Mechanical Switch

Park, Min-Ki; Choi, Sang-Jae; Lim, Sung-Hun

doi:10.1109/tasc.2020.2979394

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…However, the quench generation in the SCM right after the fault occurs does not allow the cancellation between two fluxes, which gives rise to a limit in the fault current and contributes to the fault current limiting operation of the SFCLB [19][20][21][22][23][24][25][26][27]. Simultaneously, the induced voltage in the N 3 due to the non-cancellation of two fluxes brings the current flow into the driving coil.…”

Section: Operational Principlementioning

confidence: 99%

“…Continuously, a flux-lock type SFCL using a mechanical switch, which utilizes the features of the trigger type and flux-coupling type SFCLs, has been reported upon and its advantageous characteristics described compared to other types of SFCL. Recently, the operational characteristics of the SFCL with an interrupting operation have been presented [26,27]. The interrupting operation of the SFCL is expected to be more necessary for the reliable operation of the meshed or looped power system with multiple bus lines and the protection of linked power systems from the short circuit [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

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Fault Current Limiting and Breaking Characteristics of SFCLB Using Flux Coupling with Tap Changer

2020

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In this paper, a superconducting fault current limiting breaker (SFCLB) using flux coupling with a tap changer is suggested and its effective fault current limiting and breaking characteristics due to the winding method using its tap changer are analyzed. The suggested SFCLB using flux coupling, which consists of the SFCLB using flux coupling with a tap changer, mechanical switch and driving coil, can perform the circuit-breaking function without external driving power after the fault current limiting operation. To examine the suggested SFCLB’s operation, the small scale SFCLB using flux coupling was fabricated and alternative current (AC) short-circuit experiments due to the winding method using the tap changer of the SFCLB were executed. From the experimental results, a lower fault current limiting rate and faster breaking time in the case of a SFCLB with a series connection could be obtained compared to one with a parallel connection.

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