Transient stability of a power system with superconducting fault current limiters

TL;DR

This paper investigates how superconducting fault current limiters (FCLs) affect the transient stability of power systems, showing that their placement and parameters can either improve or degrade system stability, supported by experimental results.

Contribution

It provides an analysis of the impact of superconducting FCLs on power system stability, including experimental validation and discussion of different FCL configurations.

Findings

FCL placement and parameters influence stability positively or negatively.

Experimental demonstration of stability improvement with inductive superconducting FCL.

Discussion on extending results to other FCL designs.

Abstract

The influence of a superconducting fault current limiter (FCL) on the transient stability of the synchronic operation of electric machines is analyzed for different locations of the inductive FCL in a network and for different parameters of the device. It is shown that the stability can be improved or degraded depending on the FCL impedance under a fault and the time of the recovery of the initial state of the limiter after a fault. Improving the transient stability with the inductive superconducting FCL is demonstrated in the experiments on the electrodynamic model of a power system. The expansion of the obtained results for other FCL designs is discussed.