Comparative Analysis and Design of Inductive and Resistive SFCL for HB-MMC-HVDC Under DC Faults

Chen, Zhengguang; Wang, Yizhen; Qiu, Fengliang; Wang, Shuyang; Zeng, Rui; Wang, Xingguo

doi:10.1109/ei252483.2021.9713299

Cited by 1 publication

(2 citation statements)

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“…Among the different types of FCLs, various researchers have claimed that the R-SFCL is a promising solution for the protection of HVDC grids [8][9][10][11][12][13][14]. The main advantages of R-SFCL are their applicability to high voltage and currents, high reliability, low harmonics, very small losses, and low voltage drops.…”

Section: Introductionmentioning

confidence: 99%

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Modelling of Resistive Type Superconducting Fault Current Limiter for HVDC Grids

2022

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The protection of high voltage direct current (HVDC) grids is a challenge considering that the protection system must detect, locate, and interrupt large fault currents in a few milliseconds. Resistive type superconducting fault current limiters (R-SFCL) can help solve that difficult task, reducing the extremely demanding ratings of HVDC circuit breakers. This paper presents different approaches to model R-SFCLs in order to analyze their suitability for assessing the performance of HVDC grid protection, including the step model, the exponential model, the RQ model, and the magneto-thermal model. In the first instance, the R-SFCL models are evaluated in a test grid to analyze their parameterisation and select the most adequate model for the study of HVDC grids. The RQ model is finally chosen for its simplicity but closer behavior to the magneto thermal model in terms of fault resistance dependency and resistance evolution curve. Then, the performance of an RQ type R-SFCL model in conjunction with a mechanical circuit breaker is evaluated in a multiterminal HVDC grid with different fault cases. This way, fault currents are greatly decreased as well as circuit breaker requirements. Hence, the R-SFCL under study enables a reliable protection of the HVDC grid.

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Section: Introductionmentioning

confidence: 99%

“…Most papers analyze the design of R-SFCLs from the equipment perspective [8]; nonetheless, this paper focuses on the system performance perspective. In this way, the paper presents different approaches to model R-SFCLs, with the application of HVDC grid protection.…”

Section: Introductionmentioning

confidence: 99%