纳米Al_(2)O_(3)改性多胶粉云母主绝缘的研究  

Study on the Main Insulation of Powder Mica in Resin Rich Modified by Nano-Al_(2)O_(3)

作　　者：何树鹏 钟力生[2] 饶保林[3] 吴金水 HE Shupeng;ZHONG Lisheng;RAO Baolin;WU Jinshui(Toshiba Hydro Power（Hangzhou）Co.,Ltd.,Hangzhou 311504,China;State Key Laboratory of Electrical Insulation and Power Equipment（Xi,an Jiaotong University）,Xi？an 710049,China;Key Laboratory of New Processing Technology for Nonferrous Metals and Materials,Ministry of Education（Guilin University of Technology）,Guilin 541004,China)

机构地区：[1]东芝水电设备(杭州)有限公司,杭州 311504 [2]电力设备电气绝缘国家重点实验室(西安交通大学)，西安 710049 [3]有色金属及材料加工新技术教育部重点实验室(桂林理工大学)，广西 桂林 541004

出　　处：《大电机技术》2018年第4期32-36,共5页Large Electric Machine and Hydraulic Turbine

摘　　要：提高大电机主绝缘材料的热传导性能及电寿命,对发电机安全运行及能效密度提高具有重要意义。本文以VPR多胶绝缘系统为基础,研究了多胶Al_2O_3纳米粉体改性主绝缘特性。试验结果表明,在保持材料工艺性、固化后机械性能及常规电气性能不变的情况下,改性材料导热系数提高约1.1倍;瞬时工频击穿电压平均值下降18.8%;电老化寿命可提高5~6倍。It is important to improve the thermal conductivity and electrical life of the main insulation materials, and it is of great significance to improve the safe operation and energy efficiency of the generator. Therefore, based on the VPR （Vacuum Pressurized Resin Rich） system, we researched the characteristics of the main insulation of powder mica in resin rich modified by nano-Al2〇3. The experimental results show that the manufacture ability, mechanical capability after solidify and the electrical performance of tan？5／PD can maintain normal. But the thermal conductivity increased by 1.1 times, breakdown voltage at 50Hz reduced 18.8%, electrical aging life can be increased 5^6 times.

关 键 词：大型发电机 主绝缘 多胶体系 Al_(2)O_(3)纳米粉体 改性云母 新型绝缘材料 

分 类 号：TM215.5[一般工业技术—材料科学与工程]