Simulation model of 10kV cable terminal and establishment method thereof
A technology of simulation model and cable terminal, applied in design optimization/simulation, electrical digital data processing, CAD based on constraints, etc., can solve problems such as local temperature rise stress, concentration, electric field distortion, etc., to prolong service life and improve simulation results Accuracy and the effect of reducing the accident rate
Inactive Publication Date: 2022-07-29
ZAOZHUANG POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER
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Problems solved by technology
[0004] The interface defects of cable accessories will not only cause electric field distortion, but also cause problems such as local temperature rise and stress concentration
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[0050] Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:
[0051]In order to clearly illustrate the technical features of the solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Desc...
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Abstract
The invention discloses a simulation model of a 10kV cable terminal and an establishment method of the simulation model, the simulation model comprises a conductive wire core, a conductor shielding layer, a crosslinked polyethylene insulating layer, a silicone rubber insulating layer and a stress cone structure, the conductor shielding layer, the crosslinked polyethylene insulating layer and the silicone rubber insulating layer are sequentially arranged outside the conductive wire core; the stress cone structure is arranged at one end of the 10kV cable terminal and located between the conductor shielding layer and the crosslinked polyethylene insulating layer. The stress cone structure comprises a stress cone and an insulating shielding layer wound on the stress cone. According to the method, a 10kV cable terminal simulation model is established, when metal particles or semi-conductive particles exist in a silicone rubber / crosslinked polyethylene composite interface, the situation that air gap defects are caused by crosslinked polyethylene scratching at the cut-off position of an outer semi-conductive layer is considered at the same time, changes of an electric field and a temperature field before and after silicone grease coating and distribution of a stress field at the silicone grease coating position are studied, and the situation that the metal particles or the semi-conductive particles exist in the silicone rubber / crosslinked polyethylene composite interface is studied. Reference is provided for cable terminal fault reason inference and operation maintenance.
Description
technical field [0001] The invention relates to a simulation model of a 10kV cable terminal and a method for establishing the same, belonging to the technical field of cable terminals. Background technique [0002] Due to the continuous development of the social economy and the continuous improvement of the construction level of the urban power supply system, power cables have gradually replaced overhead lines as the main form of power transmission in urban power distribution networks. With the increase in the number and length of cables, the amount of cable accessories is gradually increasing. Cable accessories include cable intermediate joints and cable terminal joints. Most of the accessories with voltage levels of 35kV and below use silicone rubber as accessory insulation. During the assembly process, it is affected by the working environment and construction process. Silicone rubber / cross-linked polyethylene (SR / XLPE) The composite interface is easy to form potential d...
Claims
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IPC IPC(8): G06F30/18G06F30/23G06F111/04G06F119/08G06F119/14
CPCG06F30/18G06F30/23G06F2111/04G06F2119/08G06F2119/14
Inventor 荣以平唐晓光徐小龙宋亮林煜清李国亮高辉渐伟郑遵宇刘国建王坤代二刚燕重阳
Owner ZAOZHUANG POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER