Synergy of the future: high voltage insulated power cables and railway‐highway structures

Benato, Roberto; Sessa, Sebastian Dambone; Guizzo, Luca; Rebolini, M.

doi:10.1049/iet-gtd.2016.2082

Cited by 24 publications

(10 citation statements)

References 27 publications

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“…Figure 1 shows the cell cascade where S and R stand for sending and receiving ends respectively. Being that ∆ is sufficiently small, it is possible to lump the uniformly distributed shunt admittances at both ends of the cell (transverse blocks TS and TR) and to consider separately the longitudinal elements in the block L (where i RL ≡ i SL ) [6][7][8][9][10][11][12][13][14]. By applying this modelling approach, it is possible to compute the currents and voltages along the cable length for each conductive element of the multiconductor system, i.e., phase conductors, screens, and armour (if present).…”

Section: Mca For Evaluating Sequence Impedances Of Cable Systemsmentioning

confidence: 99%

“…It has been applied successfully to the analysis of a great number of asymmetrical/multiconductor systems from overhead lines with one or more ground wires to single-core ac and dc cables with screens and armour, gas insulated lines, and distribution line carriers. Papers [7][8][9][10][11][12][13] give some suggestions to deepen such applications, and [14] deals with the validation of the MCA method by exploiting the comparison with experimental measurements. MCA is based on the subdivision of the system into n elementary cells: the model type for the computation of elementary cell impedances can be chosen between Carson theory [15,16], Carson-Clem simplified formulae [17] or Schelkunoff/Wedepohl [18,19] formulae: at power frequency, all the formulations give the same results.…”

Section: Introductionmentioning

confidence: 99%

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Sequence Impedances of Land Single-Core Insulated Cables: Direct Formulae and Multiconductor Cell Analyses Compared with Measurements

et al. 2020

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The paper deals with the sequence impedances (positive/negative and zero sequences) of high-and extra-high-voltage land single-core insulated cables. In particular, it presents the comparisons between sequence impedance measurements and computations. The computations of the sequence impedances are carried out by means of the most important international normative and council references (IEC/Cigré) and of multiconductor cell analysis which is a consolidated and powerful tool developed by University of Padova in order to analyse power frequency regimes of multiconductor asymmetric power systems. The comparisons are presented with reference to four high-and extra-high voltage insulated cables, even if the available ones are much higher: however, the conclusions derived from these four reference cases are general and can be useful for transmission system operators and for power electric system engineers involved in insulated cables. The paper demonstrates, for the first time in technical literature, that direct formulae cannot correctly evaluate the sequence impedances of installed single-core land cable systems. Extensive on-field measurement campaigns have served to this purpose.

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Section: Mca For Evaluating Sequence Impedances Of Cable Systemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sequence Impedances of Land Single-Core Insulated Cables: Direct Formulae and Multiconductor Cell Analyses Compared with Measurements

et al. 2020

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“…Proliferating industrialization and urbanization has increased the load demand, which necessitates upgradation along with new installation of power transmission lines (PTLs), in order to ensure higher system reliability and stability [1][2][3][4]. Additionally, development of the smart grid [4,5], integration of renewable energy [6][7][8] and the requirement of interruption free operation [9,10] necessitates implementation of PTLs with in metropolitan areas [11,12]. Literature describes that existing PTLs are comprised of underground cables (UGCs) [7,[13][14][15], overhead lines (OHLs) [2,11,16,17] and gas insulated lines (GILs) [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Electro-Mechanical Design and Creep Analysis of Proposed Enclosure for Flexible Gas Insulated Line Regarding Subsurface Metropolitan Applications of High-Voltage Transmission Lines

et al. 2019

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Land shortage in metropolitan vicinities entails subsurface implementation of power transmission lines (PTLs) which demand structural flexibility, as well as substantial load bearing capability. Thus, development of a flexible gas insulated transmission line (FGIL) necessitates its strength degradation analysis, regarding the synergistic effect of aging and mechanical loadings. Moreover, correlation of conductor and enclosure dimensions of FGIL apropos field distribution, requires careful consideration regarding their dimensional specifications. In this research, a comprehensive electro-mechanical design is performed for the proposed flexible-thermoplastic-enclosure of a 132 kV FGIL by considering the synergistic impact of time and temperature-based aging, along with the effect of external and internal loadings, such as dead load, live load and internal gas pressure. Additionally, a recursive design algorithm for the proposed scheme regarding electro-mechanical aspects, along with aging perspectives is developed. Comparative analysis of proposed and conventional schemes regarding electro-mechanical and aging aspects revealed that the proposed enclosure exhibits the required structural strength, as well as flexibility for trenchless subsurface application of FGILs in metropolitan areas.

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“…The installation of energy storage systems in a high voltage network could be one of the key elements to effectively help in solving these problems, postponing or avoiding the grid reinforcement based on new insulated cables undergrounded [9] or hosted in shared structure, [10,11] or on new overhead lines [12]. In [13], an overview of different energy storage technologies for grid services, including supercapacitor is presented.…”

Section: Introductionmentioning

confidence: 99%

Li-Ion Battery-Flywheel Hybrid Storage System: Countering Battery Aging During a Grid Frequency Regulation Service

et al. 2018

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In this paper, a hybrid storage system solution consisting of flywheels and batteries with a Lithium-manganese oxide cathode and a graphite anode is proposed, for supporting the electrical network primary frequency regulation. The aim of the paper is to investigate the benefits of flywheels in mitigation of the accelerating aging that li-ion batteries suffer during the grid frequency regulation operation. For this purpose, experimental aging tests have been performed on a lithium-manganese oxide battery module and an electrical battery model which takes into account the battery aging has been developed in a Simulink environment. Then, a flywheel electrical model has been implemented, taking into account the thermal and the electromechanical phenomena governing the electrical power exchange. This more complete model of a hybrid storage system enables us to simulate the same aging cycles of the battery-based storage system and to compare the performances of the latter with the hybrid storage system. The simulation results suggest that suitable control of the power shared between the batteries and the flywheels could effectively help in countering Li-ion battery accelerated aging due to the grid frequency regulation service.

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Synergy of the future: high voltage insulated power cables and railway‐highway structures

Cited by 24 publications

References 27 publications

Sequence Impedances of Land Single-Core Insulated Cables: Direct Formulae and Multiconductor Cell Analyses Compared with Measurements

Sequence Impedances of Land Single-Core Insulated Cables: Direct Formulae and Multiconductor Cell Analyses Compared with Measurements

Electro-Mechanical Design and Creep Analysis of Proposed Enclosure for Flexible Gas Insulated Line Regarding Subsurface Metropolitan Applications of High-Voltage Transmission Lines

Li-Ion Battery-Flywheel Hybrid Storage System: Countering Battery Aging During a Grid Frequency Regulation Service

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