CAJ | 학술논문

针对中压开关设备产品在小型化过程中产品绝缘距离存在安全隐患的情况，研究了绝缘层外表面接地以及不同高压绝缘介质不同厚度对电场分布的影响，建立了数学模型，并采用电场有限元Infolytica ElecNet软件进行电场仿真。试验结果证明，使三相高压设备的单相高压导体外绝缘表面接地或合理设计多介质的不同厚度可以降低三相设备相间或对地的安全绝缘距离，达到了设计要求。
침대중압개관설비산품재소형화과정중산품절연거리존재안전은환적정황，연구료절연층외표면접지이급불동고압절연개질불동후도대전장분포적영향，건립료수학모형，병채용전장유한원Infolytica ElecNet연건진행전장방진。시험결과증명，사삼상고압설비적단상고압도체외절연표면접지혹합리설계다개질적불동후도가이강저삼상설비상간혹대지적안전절연거리，체도료설계요구。
Aiming at the conditions that there exist potential safety hazards for production insulation distance during the process of me-dium voltage switchgear miniaturization, this paper researched on insulating layer surface earthing and the impacts of different high voltage insulating medium with different thickness on electric ifeld distribution, and established a mathematical model, adopting electric ifeld ifnite element software Infolytica ElecNet to simulate electric ifeld. Test results show that under the same conditions, the insulating surface of sin-gle phase high voltage conductor in three-phase high voltage equipment is earthed or the thickness of multi medium is reasonable designed to reduce safe insulation distance between poles of three-phase equipment or poles to earth, so as to meet the requirements of design.