Temperature and Pressure Distribution Simulations of 3-km-Long High-Temperature Superconducting Power Cable System with Fault Current for 66-kV-Class Transmission Lines

Tetsuo Yasui, Natsuko Takeda, Yusuke Yokoo, Ko Agatsuma, Atsushi Ishiyama, Xudong Wang, Takato Masuda, Toshiya Morimura, Tomoo Mimura

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    A computer program has been developed by numerically solving the nonlinear heat conduction and heat transfer equations, which are discretized using the finite difference method, to calculate the temperature and pressure distributions in high-temperature superconducting (HTS) power cables cooled using liquid nitrogen (LN2). The LN2 coolant properties are estimated using Cryodata's GASPAK software package. This evaluation of the temperature and pressure distributions is important to understand how we can make practical use of HTS power cables and to assess the effects of short-circuit accidents. To incorporate HTS power cables into real grids, it is necessary to evaluate HTS power cables that are a few kilometers long. In this study, 3-km-long HTS cables were evaluated using our proposed computer program. This program was used to model the cooling system, ac loss, dielectric loss, and intermediate-joint losses. The results revealed that the temperature of the LN2 coolant at the cable outlet could reach the saturation temperature when a fault current of 31.5 kA flowed for 2 s (worst case for the 66-kV-class transmission lines in Japan). From the results, it was also clear that the effects of the ac loss, dielectric loss, and intermediate-joint losses on the increase in the temperature of the LN2 coolant could not be ignored.

    Original languageEnglish
    Article number7828002
    JournalIEEE Transactions on Applied Superconductivity
    Volume27
    Issue number4
    DOIs
    Publication statusPublished - 2017 Jun 1

    Fingerprint

    Electric fault currents
    pressure distribution
    Pressure distribution
    cables
    transmission lines
    Electric lines
    Cables
    Temperature distribution
    temperature distribution
    coolants
    simulation
    Coolants
    computer programs
    dielectric loss
    Temperature
    Dielectric losses
    Computer program listings
    short circuits
    cooling systems
    outlets

    Keywords

    • Cooling system
    • fault current
    • high-temperature superconducting power cable
    • LN coolant
    • saturation temperature

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Electrical and Electronic Engineering

    Cite this

    Temperature and Pressure Distribution Simulations of 3-km-Long High-Temperature Superconducting Power Cable System with Fault Current for 66-kV-Class Transmission Lines. / Yasui, Tetsuo; Takeda, Natsuko; Yokoo, Yusuke; Agatsuma, Ko; Ishiyama, Atsushi; Wang, Xudong; Masuda, Takato; Morimura, Toshiya; Mimura, Tomoo.

    In: IEEE Transactions on Applied Superconductivity, Vol. 27, No. 4, 7828002, 01.06.2017.

    Research output: Contribution to journalArticle

    Yasui, Tetsuo ; Takeda, Natsuko ; Yokoo, Yusuke ; Agatsuma, Ko ; Ishiyama, Atsushi ; Wang, Xudong ; Masuda, Takato ; Morimura, Toshiya ; Mimura, Tomoo. / Temperature and Pressure Distribution Simulations of 3-km-Long High-Temperature Superconducting Power Cable System with Fault Current for 66-kV-Class Transmission Lines. In: IEEE Transactions on Applied Superconductivity. 2017 ; Vol. 27, No. 4.
    @article{19ffd6f88e1c436bb135c1eaa69e8b22,
    title = "Temperature and Pressure Distribution Simulations of 3-km-Long High-Temperature Superconducting Power Cable System with Fault Current for 66-kV-Class Transmission Lines",
    abstract = "A computer program has been developed by numerically solving the nonlinear heat conduction and heat transfer equations, which are discretized using the finite difference method, to calculate the temperature and pressure distributions in high-temperature superconducting (HTS) power cables cooled using liquid nitrogen (LN2). The LN2 coolant properties are estimated using Cryodata's GASPAK software package. This evaluation of the temperature and pressure distributions is important to understand how we can make practical use of HTS power cables and to assess the effects of short-circuit accidents. To incorporate HTS power cables into real grids, it is necessary to evaluate HTS power cables that are a few kilometers long. In this study, 3-km-long HTS cables were evaluated using our proposed computer program. This program was used to model the cooling system, ac loss, dielectric loss, and intermediate-joint losses. The results revealed that the temperature of the LN2 coolant at the cable outlet could reach the saturation temperature when a fault current of 31.5 kA flowed for 2 s (worst case for the 66-kV-class transmission lines in Japan). From the results, it was also clear that the effects of the ac loss, dielectric loss, and intermediate-joint losses on the increase in the temperature of the LN2 coolant could not be ignored.",
    keywords = "Cooling system, fault current, high-temperature superconducting power cable, LN coolant, saturation temperature",
    author = "Tetsuo Yasui and Natsuko Takeda and Yusuke Yokoo and Ko Agatsuma and Atsushi Ishiyama and Xudong Wang and Takato Masuda and Toshiya Morimura and Tomoo Mimura",
    year = "2017",
    month = "6",
    day = "1",
    doi = "10.1109/TASC.2017.2656631",
    language = "English",
    volume = "27",
    journal = "IEEE Transactions on Applied Superconductivity",
    issn = "1051-8223",
    publisher = "Institute of Electrical and Electronics Engineers Inc.",
    number = "4",

    }

    TY - JOUR

    T1 - Temperature and Pressure Distribution Simulations of 3-km-Long High-Temperature Superconducting Power Cable System with Fault Current for 66-kV-Class Transmission Lines

    AU - Yasui, Tetsuo

    AU - Takeda, Natsuko

    AU - Yokoo, Yusuke

    AU - Agatsuma, Ko

    AU - Ishiyama, Atsushi

    AU - Wang, Xudong

    AU - Masuda, Takato

    AU - Morimura, Toshiya

    AU - Mimura, Tomoo

    PY - 2017/6/1

    Y1 - 2017/6/1

    N2 - A computer program has been developed by numerically solving the nonlinear heat conduction and heat transfer equations, which are discretized using the finite difference method, to calculate the temperature and pressure distributions in high-temperature superconducting (HTS) power cables cooled using liquid nitrogen (LN2). The LN2 coolant properties are estimated using Cryodata's GASPAK software package. This evaluation of the temperature and pressure distributions is important to understand how we can make practical use of HTS power cables and to assess the effects of short-circuit accidents. To incorporate HTS power cables into real grids, it is necessary to evaluate HTS power cables that are a few kilometers long. In this study, 3-km-long HTS cables were evaluated using our proposed computer program. This program was used to model the cooling system, ac loss, dielectric loss, and intermediate-joint losses. The results revealed that the temperature of the LN2 coolant at the cable outlet could reach the saturation temperature when a fault current of 31.5 kA flowed for 2 s (worst case for the 66-kV-class transmission lines in Japan). From the results, it was also clear that the effects of the ac loss, dielectric loss, and intermediate-joint losses on the increase in the temperature of the LN2 coolant could not be ignored.

    AB - A computer program has been developed by numerically solving the nonlinear heat conduction and heat transfer equations, which are discretized using the finite difference method, to calculate the temperature and pressure distributions in high-temperature superconducting (HTS) power cables cooled using liquid nitrogen (LN2). The LN2 coolant properties are estimated using Cryodata's GASPAK software package. This evaluation of the temperature and pressure distributions is important to understand how we can make practical use of HTS power cables and to assess the effects of short-circuit accidents. To incorporate HTS power cables into real grids, it is necessary to evaluate HTS power cables that are a few kilometers long. In this study, 3-km-long HTS cables were evaluated using our proposed computer program. This program was used to model the cooling system, ac loss, dielectric loss, and intermediate-joint losses. The results revealed that the temperature of the LN2 coolant at the cable outlet could reach the saturation temperature when a fault current of 31.5 kA flowed for 2 s (worst case for the 66-kV-class transmission lines in Japan). From the results, it was also clear that the effects of the ac loss, dielectric loss, and intermediate-joint losses on the increase in the temperature of the LN2 coolant could not be ignored.

    KW - Cooling system

    KW - fault current

    KW - high-temperature superconducting power cable

    KW - LN coolant

    KW - saturation temperature

    UR - http://www.scopus.com/inward/record.url?scp=85014966761&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=85014966761&partnerID=8YFLogxK

    U2 - 10.1109/TASC.2017.2656631

    DO - 10.1109/TASC.2017.2656631

    M3 - Article

    VL - 27

    JO - IEEE Transactions on Applied Superconductivity

    JF - IEEE Transactions on Applied Superconductivity

    SN - 1051-8223

    IS - 4

    M1 - 7828002

    ER -