Simulation and experiment of a YBCO SMES prototype in voltage sag compensation

Zhu, Jiahui; Yuan, Weijia; Coombs, Tim; Ming, Qu

doi:10.1016/j.physc.2010.12.015

Cited by 15 publications

(3 citation statements)

References 7 publications

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“…The ac loss per unit time might be significantly higher than in normal conditions during a discharge process since a SMES is expected to react quickly in response to a grid incident, i.e. a quick discharge to maintain grid stability [330], [331], [332]. In certain discharge circumstances, the ac loss per unit time will be much larger than a cryocooler capacity.…”

Section: ) Fault Current Limitersmentioning

confidence: 99%

Computation of Losses in HTS Under the Action of Varying Magnetic Fields and Currents

Grilli

Pardo

Stenvall

et al. 2014

IEEE Trans. Appl. Supercond.

312

272

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Numerical modeling of superconductors is widely recognized as a powerful tool for interpreting experimental results, understanding physical mechanisms and predicting the performance of high-temperature superconductor (HTS) tapes, wires and devices. This is especially true for ac loss calculation, since a sufficiently low ac loss value is imperative to make these materials attractive for commercialization. In recent years, a large variety of numerical models, based on different techniques and implementations, have been proposed by researchers around the world, with the purpose of being able to estimate ac losses in HTSs quickly and accurately. This article presents a literature review of the methods for computing ac losses in HTS tapes, wires and devices. Technical superconductors have a relatively complex geometry (filaments, which might be twisted or transposed, or layers) and consist of different materials. As a result, different loss contributions exist. In this paper, we describe the ways of computing such loss contributions, which include hysteresis losses, eddy current losses, coupling losses, and losses in ferromagnetic materials. We also provide an estimation of the losses occurring in a variety of power applications.

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Section: ) Fault Current Limitersmentioning

confidence: 99%

Computation of Losses in HTS Under the Action of Varying Magnetic Fields and Currents

Grilli

Pardo

Stenvall

et al. 2014

IEEE Trans. Appl. Supercond.

312

272

View full text Add to dashboard Cite

show abstract

“…However, for this study BSCCO tape superconductor has been considered but there are some other alternatives like YBCO tapes [13,14] or the comparatively contemporary MgB2 based superconductors [15] which are capable of attaining greater current densities ensuring greater amount of energy under the same condition as described in the HTS tape characterization. Also studies can be extended for other conceptual designs with LTS superconductors, like Nb-Ti which has greater current density.…”

Section: Discussionmentioning

confidence: 99%

Study on Conceptual Designs of Superconducting Coil for Energy Storage in SMES

Zaman

Islam

Maruf

2020

EEJP

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Superconducting Magnetic Energy Storage (SMES) is an exceedingly promising energy storage device for its cycle efficiency and fast response. Though the ubiquitous utilization of SMES device is restricted because of the immense cost of cryogenic refrigeration system to sustain the superconducting state but with the continuous evolution of high Tc superconductors, SMES is turning into a major contender to the existing energy storage devices in the future. Among its several parts, the superconducting coil is considered to be the most crucial segment of this technology and the inductance generated in the coil determines the quantity of stored energy. In this paper, the possible geometrical configurations of SMES coil have been demonstrated. High Tc superconducting tapes are usually employed to form these configurations worldwide. BSCCO (Bismuth strontium calcium copper oxide)-2223 tape superconductor has been considered for studying the conceptual designs of superconducting coil of SMES. Before estimating the results, the value of critical current at different magnetic field densities and temperatures have been addressed through the study of superconducting tape characterization. Numerical results and the relationship among the several parameters for both the solenoid and toroid configurations in different specifications have been presented. Based on the results, the size ratio in solenoid and the mean toroid diameter in toroid arrangement is found to play the vigorous roles in the generation of inductance and hence the energy storage. The results also match the propensity of other studies. Suggestions for maximum energy gain from a specific solenoid configuration have been provided. Future research scopes with alternative superconducting tapes and limitations of this study have been briefly conferred.

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“…Therefore we put the YBCO coils at the top and bottom ends of the SMES magnet because the perpendicular magnetic fields are higher in the top and bottom ends region. BSCCO coils are put in the middle of the SMES magnet where the perpendicular magnetic field is much smaller so that they can operate with high critical currents [10] . which is going to be immersed in a sub-cooled LN2 cryostat.…”

Section: A the Hybrid Hts Magnet Optimal Designmentioning

confidence: 99%

Design, dynamic simulation and construction of a hybrid HTS SMES (high-temperature superconducting magnetic energy storage systems) for Chinese power grid

Zhu

Qiu

Wei

et al. 2013

Energy

Self Cite

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High-temperature superconducting magnetic energy storage systems (HTS SMES) are an emerging technology with fast response and large power capacities which can address the challenges of growing power systems and ensure a reliable power supply. China Electric Power Research Institute (CEPRI) has developed a kJ-range, 20kW SMES using two state of art HTS conductors, BSCCO and YBCO tapes. This SMES system is used to compensate a power drop and a fluctuation in order to damp low frequency oscillations to increase stability of a power system. This paper presents an optimized design of the SMES system to achieve a maximum energy capacity. A voltage source converter using IGBTs is built and can be used to control the power flow between the SMES system and external circuits. A control system using a digital signal processor (DSP) and micro-programmed control unit (MCU) is constructed. SVPWM pulse modulation is used as a control strategy. The whole system was experimentally tested for compensation of power fluctuation within milliseconds in a dynamic power system simulation laboratory. The result validates the design and control circuit, and more importantly, the application capability of SMES systems in a power grid.

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Simulation and experiment of a YBCO SMES prototype in voltage sag compensation

Cited by 15 publications

References 7 publications

Computation of Losses in HTS Under the Action of Varying Magnetic Fields and Currents

Computation of Losses in HTS Under the Action of Varying Magnetic Fields and Currents

Study on Conceptual Designs of Superconducting Coil for Energy Storage in SMES

Design, dynamic simulation and construction of a hybrid HTS SMES (high-temperature superconducting magnetic energy storage systems) for Chinese power grid

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