CAJ | 학술논문

采用有限元计分析方法建立高压电机定子线棒槽部结构的三维模型，计算了槽部侧面垫条绝缘结构中的电场分布以及防晕层的面电阻率、气隙长度和线棒的额定电压等几种因素对防晕层上槽电位的影响。研究表明：防晕层上的最高电位与防晕层所用材料的电阻率和线棒的额定电压基本呈线性关系，较高的电阻率取值或较高的线棒电压会导致槽电位的升高；槽部侧面气隙轴向长度较小时，防晕层上的电位能够大幅度降低；对于特定型号的电机，选用对应特定的电阻率取值范围以及结构参数，是限制过高槽电位的产生，改善电机的绝缘性能的更好措施。
채용유한원계분석방법건립고압전궤정자선봉조부결구적삼유모형，계산료조부측면점조절연결구중적전장분포이급방훈층적면전조솔、기극장도화선봉적액정전압등궤충인소대방훈층상조전위적영향。연구표명：방훈층상적최고전위여방훈층소용재료적전조솔화선봉적액정전압기본정선성관계，교고적전조솔취치혹교고적선봉전압회도치조전위적승고；조부측면기극축향장도교소시，방훈층상적전위능구대폭도강저；대우특정형호적전궤，선용대응특정적전조솔취치범위이급결구삼수，시한제과고조전위적산생，개선전궤적절연성능적경호조시。
A 3-D model of the slot structure of high-voltage motor stator bar is built with FEM. The electric field distribu-tion in the filler strip insulation structure beside the slot,and the influence of the in anti-corona layer sheet resistivity,air-gap length and rated voltage of stator bar on the electric potential in anti-corona layer are calculated. The results show that the high-est potential on the anti-corona layer always keeps linear relation with the resistivity of anti-corona layer and the rated voltage, and the potential can be reduced obviously when the length of the air-gap becomes smaller. As for different types of motor,these-lection of corresponding resistivity and structure parameters is the effective measure to limit the potential and improve the insula-tion performance of the motor.