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首页> 外文期刊>Electric power systems research >Calculation of electric field and partial discharge activity reduction for covered conductor/high voltage insulator systems
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Calculation of electric field and partial discharge activity reduction for covered conductor/high voltage insulator systems

机译：包覆导体/高压绝缘子系统的电场和局部放电活性降低的计算

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In this paper, a proposed covered conductor (CC) sheath design is presented. The proposed design is theoretically evaluated based on calculations of electric field strength at different regions using finite element analysis. These calculations are carried out considering the conventional as well as the proposed CC designs. The evaluation is done concerning two different insulator types such as porcelain and polyethylene insulators. The proposed design aims at reducing the electric field strength at sheath/high voltage insulator interface as well as at the dry bands formed over the wet polluted or ice covered insulator. Therefore, activity reduction in partial discharge at the sheath surface and dry band arcing over the high voltage insulator surface can be achieved. The proposed design is experimentally evaluated based on partial discharge inception voltage (PDIV) measurements considering dry and polluted conditions. Also, the experimental evaluation is carried out considering leakage current measurements under wet polluted condition. The obtained results either theoretical or experimental give an evidence for an efficient proposed design in electric field, partial discharge, and dry band arcing reduction for CC/insulator system. (C) 2016 Elsevier B.V. All rights reserved.
机译：在本文中，提出了一种建议的覆盖导体（CC）护套设计。基于有限区域分析计算的不同区域的电场强度，从理论上评估了提出的设计。这些计算是在考虑了常规CC设计和建议CC设计的基础上进行的。针对两种不同的绝缘子类型（例如瓷绝缘子和聚乙烯绝缘子）进行了评估。提出的设计旨在降低护套/高压绝缘子界面以及在湿的污染或覆冰的绝缘子上形成的干带处的电场强度。因此，可以实现护套表面局部放电的活性降低和高压绝缘体表面上的干带电弧放电。基于干燥和污染条件下的局部放电起始电压（PDIV）测量，对所提出的设计进行了实验评估。另外，考虑湿污染条件下的泄漏电流测量进行实验评估。获得的理论或实验结果为CC /绝缘子系统在电场，局部放电和减少干带电弧方面的有效建议设计提供了证据。 （C）2016 Elsevier B.V.保留所有权利。

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