车载变压器油纸绝缘受潮状态的评估方法研究  

Study on Evaluation Method of Moisturized State of Oil Paper Insulation of Vehicle Mounted Transformer

作　　者：葛天 王川 李智强 GE Tian;WANG Chuan;LI Zhi-qiang(CRRC Chengdu Rolling Stock Co.Ltd.,Chengdu 610511,China)

机构地区：[1]中车成都机车车辆有限公司,四川成都610511

出　　处：《电气开关》2024年第1期74-76,80,共4页Electric Switchgear

摘　　要：车载变压器内部油纸绝缘状况是影响动车运行的重要因素,采用FDS法测试了不同受潮程度车载变压器油纸绝缘试样,用修正的Havriliak-Negami介电弛豫模型分析模型参数随水分的变化,利用灰狼算法从模型参数中提取能够表征参量,对水分含量进行评估,对测试得到的水分含量为2.40%的车载变压器油纸绝缘样品进行评估。结果表明:提出的方法能够对车载变压器油纸绝缘的水分含量进行有效评估,利用该评估方法与实测值的误差在0.8%,为车载变压器油纸绝缘受潮状态评估提供了一种新的方法。The oil-paper insulation condition inside the on-board transformer is an important factor affecting the operation of the motor vehicle,the modified Havriliak-Negami dielectric relaxation model was used to analyze the variation of model parameters with water,and the gray wolf algorithm was used to extract the characterizable parameters from the model parameters and to evaluate the water content,the oil-paper insulation samples of on-board transformer with actual moisture content of 2.40% were evaluated.The results show that the proposed method can effectively evaluate the moisture content of oil-paper insulation of on-board transformers,and the error between the evaluation method and the measured value is 0.8%,it provides a new method for evaluating the moisture state of oil-paper insulation of vehicle-mounted transformer.

关 键 词：车载变压器 油纸绝缘 频域介电谱 Havriliak-Negami模型 灰狼算法 

分 类 号：TM41[电气工程—电器]