An improved non-adiabatic FEM model of a line-to-earth fault in buried power cables

Next generation aircrafts will use more electrical power to reduce weight, fuel consumption, system complexity and greenhouse gas emissions. However, new failure modes and challenges arise related to the required voltage increase and consequent rise of electrical stress on wiring insulation materials, thus increasing the risk of electrical arc appearance. This work performs a critical and comprehensive review concerning arc tracking effects in wiring insulation systems, underlying mechanisms, role of materials and possible mitigation strategies, with a special focus on aircraft applications. To this end an evaluation of the scientific and technological state of the art is carried out from the analysis of theses, research articles, technical reports, international standards and white papers. This review paper also reports the limitations of existing insulation materials, standard test methods and mitigation approaches, while identifying the research needs to comply with the future demands of the aircraft industry.

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“…In [37] a non-adiabatic Finite Element Method (FEM) model of the arc is proposed, which can be applied to model dry and wet arc tracking effects.…”

Section: Factors Affecting Arc Trackingmentioning

confidence: 99%

Arc Tracking Control in Insulation Systems for Aeronautic Applications: Challenges, Opportunities, and Research Needs

Riba

Gómez-Pau

Moreno-Eguilaz

et al. 2020

Sensors

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“…Due to its ease, monitoring the temperature of the cable surface for non-embedded internal core temperature detection has attracted much interest lately. Numeric methods include the thermal circuit method (Swift et al, 2001;Liang, 2016) and the finite element method (FEM) (Klimenta et al, 2011;Ghoneim et al, 2021;Zhang et al, 2022). The former was proposed by Neher (1949) since the Kennelly hypothesis (Neher and Mcgrath, 1957) was put forward.…”

Section: Introductionmentioning

confidence: 99%

A precise inversion method of cable joint core temperature with non-embedded detection based on UMAP and ISSA-BPNN

et al. 2022

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Obtaining the core temperature of the cable joint is vital to ensure the safe operation of the modern power system with integration. To improve the speed and accuracy of core temperature inversion, this study proposed a non-embedded cable joint temperature inversion method named uniform manifold approximation and projection (UMAP) and the improved sparrow search algorithm (ISSA) optimized the back propagation neural network (BPNN). Firstly, UMAP is used to reduce the feature dimension of sample data input and enhance the data visualization effect. After dimension reduction, the model input features are consistent with the international ampacity calculation standard, and the calculation speed and accuracy of the model are improved. To improve the optimization ability of SSA, the Tent chaotic operator is introduced, and then the ISSA is used to optimize BPNN to address the issue of unstable output and easy falling into a local minimum. At last, the optimization ability and temperature inversion effect of the improved model were compared with other competing algorithms based on the 10 kV cable joint temperature-rise test and CEC2017 benchmark function. The experimental results show that the proposed method shortens the calculation time of the model, and the mean absolute error of temperature inversion is about 0.1°C. The overall performance is the most outstanding, the training data set is unbiased, and the interpretability of the model improves, which can provide a reliable reference for line operation and maintenance personnel.

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Thermal Modeling for Underground Cable Under the Effect of Thermal Resistivity and Burial Depth Using Finite Element Method

Al-Dulaimi

Guneser

Hameed

2022

Innovations in Smart Cities Applications Volume 5

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An improved non-adiabatic FEM model of a line-to-earth fault in buried power cables

Cited by 10 publications

References 8 publications

Arc Tracking Control in Insulation Systems for Aeronautic Applications: Challenges, Opportunities, and Research Needs

Arc Tracking Control in Insulation Systems for Aeronautic Applications: Challenges, Opportunities, and Research Needs

A precise inversion method of cable joint core temperature with non-embedded detection based on UMAP and ISSA-BPNN

Thermal Modeling for Underground Cable Under the Effect of Thermal Resistivity and Burial Depth Using Finite Element Method

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