接触电阻计算新方法  

The New Method for Calculating Contact Resistance

作　　者：王刚 杜志叶[2] 

机构地区：[1]平高集团有限公司国家电网高压开关设备绝缘材料实验室,河南平顶山467001 [2]武汉大学电气工程学院,湖北武汉430072

出　　处：《湖南大学学报（自然科学版）》2017年第8期117-123,共7页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(51477120);国家863高技术基金资助项目(2014AA051802);国家电网科技项目‘特高压直流换流站中隔离开关;阀厅接地开关和金具关键技术研究’(SGNXJX00YJJS1400105)~~

摘　　要：运用模糊系统对接触电阻进行建模.首先通过全因子法进行试验,得到足量试验数据,从试验数据中选出一部分能代表整个样本空间特征的数据作为训练数据训练模糊系统,剩下的作为测试数据对模糊系统进行测试,检测系统可靠性.然后在分析基本遗传算法与递推最小二乘算法特点的基础上,将二者结合形成混合算法,混合算法是在基本遗传算法之后进行递推最小二乘算法的运算.通过训练数据分别利用递推最小二乘算法、基本遗传算法、混合算法训练模糊系统,混合算法的收敛效果优于其他2种方法.通过训练数据建立基于回归分析的接触电阻模型.利用测试数据对各模型进行测试,并比较测试结果,混合算法训练模糊系统所得模型的测试效果是各模型中最好的.测试和比较结果说明若能得到足量训练数据,用混合算法训练模糊系统的方法对接触电阻进行建模是可行的.The fuzzy system is used to model contact resistance.Firstly, the test is processed by the total factor method, and lots of data are obtained. The part that can reflect the characteristics of whole sample space is selected as the training data to train fuzzy system.The other part called testing data is used to eval- uate the fuzzy system and verify the dependability of fuzzy system.Afterwards, according to the characteristics of basic genetic algorithm and recursive least square algorithm, the two algorithms are combined to form hybrid algorithm, where the recursive least square algorithm is processed after basic genetic algorithm.By training data,fuzzy system is trained by recursive least square algorithm, basic genetic algo- rithm and hybrid algorithm, and it is found that the convergence of hybrid algorithm is better than that of the other algorithms. Through using regression analysis, the model of contact resistance is found. All models are tested through testing data, the dependability is verified and the prediction result is compared.The fuzzy system obtained by hybrid algorithm has the best prediction effect.The result of the prediction and comparison shows that if the training data is enough, the fuzzy system trained by hybrid algorithm is reliable to predict contact resistance.

关 键 词：接触电阻 模糊系统 基本遗传算法 递推最小二乘算法 混合算法 回归分析 

分 类 号：TM11[电气工程—电工理论与新技术] TP39[自动化与计算机技术—计算机应用技术]