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Power cables as one of main components of power networks, play an important role in electric power transmission between different zones. Because of probable incidence of water tree phenomena, air cavity and also humidity in electric insulators, increase in electric field happens locally and can lead to breakdown in insulator. The goal of This paper is determining humidity and air cavity effects in...
The electric field intensity around the power cable terminal is computed based on the finite element method when the power cable is loaded on the 110 kV constant voltage source. If the power cable terminal is installed correctly, the stress cone covers the outer semi-conducting layers 60 mm. 3 models of the power cable terminal installed incorrectly are computed, such as the stress cone covers the...
In this paper, some key factors of the insulation design of DC cable relating to its electric field intensity distribution, insulation characteristics and selection of insulation material etc. was researched. The DC cable characteristics relation between insulation resistivity and temperature, especially effect of space charge electric field intensity on the insulation design and selection of semiconductor...
The response surface method (RSM) is applied in the parameter optimization of nonlinear stress control tubes in power cable terminations. A local approximation method, called moving least square method (MLSM), is adopted to reduce the approximation errors. The electric field intensity is calculated by the transient finite element method. A comparison of the parameters before and after optimization...
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