Qualification results of a 50 m-115 kV warm dielectric cable system

Nassi, M.; Kelley, N.; Ladiè, Pierluigi; Corsato, P.; Coletta, G.; Dollen, Donald Von

doi:10.1109/77.920334

Cited by 15 publications

(4 citation statements)

References 4 publications

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“…One of the earliest efforts on the prototype of HTS cables was conducted on a 30 meter-long 12.4 kV cable, in Georgia, USA, year 2001 [27]. A few months after that, the Italian research group of Pirelli cables and systems in collaboration with the electric power research institute and the USA department of energy, have tested a 50 meter-long/115 kV AC HTS cable [28]. After these prototypes, many investigations were carried out on AC HTS cables but their lengths hardly reached to 100 meters [3].…”

Section: A Brief History Of Developments and Advances Of Hts Cablesmentioning

confidence: 99%

High temperature superconducting cables and their performance against short circuit faults: current development, challenges, solutions, and future trends

Yazdani-Asrami

Seyyedbarzegar

Sadeghi

et al. 2022

Supercond. Sci. Technol.

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Along with advancements in superconducting technology, especially in high temperature superconductors (HTS), the use of these materials in power system applications is gaining outstanding attention. Due to the lower weight, higher current carrying capability, and the lower loss of HTS cables compared to conventional counterparts, they are among the most focused applications of superconductors in power systems. In near future, these cables will be installed as key elements not only in power systems but also in cryo-electrified transportation units, which take advantage of both cryogenics and superconducting technology simultaneously, e.g. hydrogen-powered aircraft. Given the sensitivity of the reliable and continuous performance of HTS cables, any failures, caused by faults, could be catastrophic, if they are not designed appropriately. Thus, fault analysis of superconducting cables is crucial for ensuring their safety, reliability, and stability, and also for characterising the behaviour of HTS cables under fault currents at the design stage. Many investigations were conducted on the fault characterisation and analysis of HTS cables in the last few years. This paper aims to provide a topical review on all of these conducted studies, It will discuss the current challenges of HTS cables and after that current developments of fault behaviour of HTS cables would be presented, and then we will discuss the future trends and future challenges of superconducting cables regarding their fault performance.

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Section: A Brief History Of Developments and Advances Of Hts Cablesmentioning

confidence: 99%

High temperature superconducting cables and their performance against short circuit faults: current development, challenges, solutions, and future trends

Yazdani-Asrami

Seyyedbarzegar

Sadeghi

et al. 2022

Supercond. Sci. Technol.

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“…In the case of warm dielectric cables both the insulation and the conducting shield are laid outside the cryogenic pipe and operate at ambient temperature. This enormously simplifies the insulation system, which can be realized with usual compounds, including extruded dielectrics [19][20][21]. Furthermore, a smaller perimeter of the cryo-pipe is obtained.…”

Section: Cold and Warm Dielectric Hts Cablesmentioning

confidence: 99%

“…A current density J Cu =1 A mm −2 and a resistivity ρ Cu =2.1 μΩcm are assumed in the following which are typical for copper based HVDC cables. It is clear from (20) that the loss of the Cu cables decreases with the voltage rating of the cable, hence high voltage is the only way both for increasing the transport capacity and for reducing the loss. Termination losses are negligible since they correspond to about 1 km of cable.…”

Section: A Case Study In High Voltage Hts DC Transmission: a 3600 Mw/...mentioning

confidence: 99%

HTS dc transmission and distribution: concepts, applications and benefits

Morandi

2015

Supercond. Sci. Technol.

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The advantages of using HTS cables for dc transmission and distribution are quantitatively investigated. 2G-HTS cables with LN 2 cooling are considered. MgB 2 cables with LH 2 cooling or with two stages LH 2 / LN 2 cooling are considered as well. A design procedure is first set up to arriveat the sizing of the cryopipes in order as to have a realistic estimation of the cooling power required. Losses and right of way of HTS cables are calculated and compared with those of conventional solutions by following a system approach, which takes into account the possible different power architectures of the two cases. Cost comparison is also carried out. Bulk energy transmission by means of HTS HVDC link is dealt with. Feasibility of medium voltage HTS dc connection of a large offshore wind park is assessed. Finally, low voltage HTS dc distribution for data centers, aluminum smelters and ships is investigated.

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“…All these advantages make the HTS suitable for OWF energy transmission applications. Over the last two decades, several projects using HTS cables were tested and operated for the full application of HTS cables in the power grid [3]- [5]. The bulk application of the HTS in the power grid is limited by the factors such as the reliability of the cooling system, the cost of the HTS and overall complexity [6].…”

Section: Introductionmentioning

confidence: 99%

Modelling of a High-Temperature Superconductor HVDC Cable Under Transient Conditions

Chaganti

Yuan

Zhang

et al. 2023

IEEE Trans. Appl. Supercond.

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The carbon neutrality goal of achieving net-zero by 2050 has sparked significant interest in offshore wind farms. With the offshore wind farms installed > 100 km away from the seashore, underground power transmission infrastructure is a necessity. Considering the power cable length and low net effective losses, a high-voltage direct-current (HVDC) system is chosen for this study. Also being lossless in DC operation, the HVDC cables are considered to be made out of high-temperature superconductor (HTS) material. But, unlike copper/aluminium, HTS material has a sharp transient behaviour as a function of the operating current, temperature and field. Thus, under transient conditions, as the fault current ramps up, this can lead to an increase in the HTS operating temperature, causing either degradation or permanent damage to the HVDC cable. In this paper, an HTS HVDC cable model has been developed in MATLAB/Simscape coupling both electrical and thermal models. For this study, a 100 km long coaxial 100 kV/1 GW DC HTS power cable is considered and modelled both as a lumped element and distributed element model with 100 elements to compare and evaluate the cable parameters along the length. The parameters include temperature distribution, resistance, critical current, and losses at different spots throughout the length of the cable. To simulate the transient condition, a lineto-ground (LG) fault is considered and the current distribution between the copper former and HTS tapes is studied. Using this cable model, the maximum temperature of the HTS and coolant both in the superconducting state and transient state are evaluated and presented. In comparison to the distributed model, the lumped model displayed different thermal and electrical values.

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Qualification results of a 50 m-115 kV warm dielectric cable system

Cited by 15 publications

References 4 publications

High temperature superconducting cables and their performance against short circuit faults: current development, challenges, solutions, and future trends

High temperature superconducting cables and their performance against short circuit faults: current development, challenges, solutions, and future trends

HTS dc transmission and distribution: concepts, applications and benefits

Modelling of a High-Temperature Superconductor HVDC Cable Under Transient Conditions

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