基于操动机构配合公差的断路器灭弧性能研究

发布时间：2018-05-18 04:26

本文选题：高压断路器 + 操动机构　；参考：《华中科技大学学报(自然科学版)》2017年11期

【摘要】：针对操动机构配合公差对高压断路器灭弧室灭弧性能的影响,建立了操动机构和灭弧室联合仿真模型.通过对比联合仿真计算结果与工程试验所得数据,验证了联合仿真模型的准确性与适用性.研究结果表明:操动机构系统的配合公差等级与配合数量对灭弧室灭弧性能影响较大,配合公差等级对灭弧室灭弧性能的影响主要体现在灭弧室关键部位气体压力变化的滞后性,滞后时间最长为0.002s;考虑不同公差配合数量时,灭弧室关键部位气体速度幅值变化较大;通过选择合适的配合等级与配合数量能够提升灭弧室灭弧性能.
[Abstract]:Aiming at the effect of operating mechanism tolerance on the performance of arc extinguishing chamber of high voltage circuit breaker, a joint simulation model of operation mechanism and interrupter is established. The accuracy and applicability of the joint simulation model are verified by comparing the results of joint simulation and engineering experiments. The results show that the degree of tolerance and the quantity of fit have a great influence on the performance of the interrupter. The effect of matching tolerance grade on the arc extinguishing performance of the interrupter is mainly reflected in the hysteresis of the gas pressure change in the key part of the interrupter, the longest lag time is 0.002 s. The gas velocity amplitude of the key part of the interrupter varies greatly, and the arc extinguishing performance of the interrupter can be improved by selecting the appropriate matching grade and the quantity of the mixture.
【作者单位】：武汉大学水射流理论与新技术湖北省重点实验室;国家电网平高集团有限公司;河南平芝高压开关有限公司;
【基金】：国家自然科学基金资助项目(51705372) 国家电网项目总部管理科技项目(5210011600FU) 湖北省自然科学基金资助项目(2015CFA154)
【分类号】：TM561

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