RTDS-based Model Component Development of a Tri-axial HTS Power Cable and Transient Characteristic Analysis

Abstract

-The transient characteristics of the tri-axial High Temperature Superconducting (HTS) power cable are different from those of a conventional power cable depending on whether the cable is under a steady or transient state due to the quench. Verification using simulation tools is required to confirm both the characteristics of the cable and the effect of the cable when it is applied to a real utility. However, a component for the cable has not been provided in simulation tools; thus the RTDSbased model component of the tri-axial HTS power cable was developed, and a simulation was performed under the transient state. The considered properties of model component include resistance, reactance and temperature. Simulation results indicate the variation of HTS power cable condition. The results are used for the transient characteristic analysis and stability verification of the tri-axial HTS power cable. In the future, the RTDS-based model component of the cable will be used to implement the hardware-in-the-loop simulation with a protection device.

An open-source 2D finite difference based transient electro-thermal simulation model for three-phase concentric superconducting power cables

“…Figure 12 presents the prospective currents generated in the system when the switch S 2 closes at t = 0.02 s. As can be seen, the fault current at each phase is partially limited by the HTS cable due the development of resistance of the HTS tapes. In the literature, simulations performed by other groups provided the same characteristics for resistance development in HTS cables under fault conditions [22,52].…”

Thermal-electrical analogy for simulations of superconducting power cables

“…none of the model focus on the integration of such cables in power systems. It is of utmost importance to investigate the impacts caused by a HTS cable when connected to a transmission or distribution grid and several groups already attempted to conduct such a study [20][21][22][23][24][25][26][27]. In most cases, when investigating the thermal and electromagnetic behavior of HTS cables connected to power grids, one is compelled to employ very simplified models.…”

A Simplified Model of Coaxial, Multilayer High-Temperature Superconducting Power Cables with Cu Formers for Transient Studies

“…Real HTS cables should be simplified as an equivalent cable with eight layers if the number of real HTS layers exceeds eight. Simplified HTS cable models, which only simulate the conducting and shield layers, were proposed in [24][25][26][27][28]. The quench phenomenon was modeled by variable resistors while current distribution of the HTS cable was simulated by self and mutual inductance based on the transformer section in the PSCAD/EMTDC program.…”