A Study on Increasing the Capacity of Transformer-Type Superconducting DC Circuit Breaker

Jeong, Ji-Sol; Choi, Hyo-Sang

doi:10.1109/tasc.2023.3254493

Cited by 1 publication

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…SFCLs utilize superconducting materials to enhance the line impedance via the quench phenomenon that occurs during a fault to limit the fault current. In [24], a quenching method was proposed for a balanced SFCL using a neutral line to increase the current-limiting rate. However, owing to the difficulty in producing superconducting materials and the high maintenance costs, there are currently few applications in highvoltage DC systems.…”

Section: Introductionmentioning

confidence: 99%

Fault Ride-Through Method for Interline Power Flow Controller Based on DC Current Limiter

Li,

Shi,

et al. 2024

Electronics

View full text Add to dashboard Cite

The interline power flow controller (IPFC) based on a modular multilevel converter with a half-bridge configuration can control the active and reactive power flows of multiple alternating current (AC) lines. However, it forms a multiterminal system on the direct current (DC) side, which leads to DC faults. To reduce the protection and clearance requirements on the DC side of IPFCs, this paper proposes a hybrid current limiter topology suitable for generating a DC-side fault ride-through scheme. The current limiter employs a low-loss branch in steady-state conditions; when the fault occurs, a commutation capacitor and controllable power electronic devices are used to transfer the fault current to the current-limiting branch. To clarify the operating principles of the current limiter, the working states of each stage and electrical stress of each device are analyzed. Different components with varying limiter parameters are also discussed, and optimal parameters to achieve the best limitation effect are discussed. PSCAD simulations show that the proposed limiter can limit the overcurrent effectively, and DC-side fault clearance can be achieved easily with this fault ride-through strategy.

show abstract

Section: Introductionmentioning

confidence: 99%