局部放电对油浸绝缘纸表面损伤特性研究-中国电机工程学报.PDF

第 31 卷 第 10 期 中 国 电 机 工 程 学 报 Vol.31 No.10 Apr.5, 2011 2011 年 4 月 5 日 Proceedings of the CSEE ©2011 Chin.Soc.for Elec.Eng. 129 文章编号：0258-8013 (2011) 10-0129-09 中图分类号：TM 835 文献标志码：A 学科分类号：470·40 局部放电对油浸绝缘纸表面损伤特性研究 廖瑞金，严家明，杨丽君，朱孟兆，孙才新 (输配电装备及系统安全与新技术国家重点实验室(重庆大学) ，重庆市 沙坪坝区 400044) Characteristics of Partial Discharge-caused Surface Damage for Oil-impregnated Insulation Paper LIAO Ruijin, YAN Jiaming, YANG Lijun, ZHU Mengzhao, SUN Caixin (State Key Laboratory of Power Transmission Equipment System Security and New Technology (Chongqing University), Shapingba District, Chongqing 400044, China) ABSTRACT: To improve partial discharge (PD) resistance of 摘要：为了提高绝缘材料的耐局部放电能力，对局部放电损 insulation materials, researches on surface topography, surface 伤过程中油浸绝缘纸的表面形貌、表面粗糙度、表面电导率、 roughness, surface products and surface conductivity of 表面生成物和气隙气体进行了研究。根据局部放电相位分布 oil-impregnated insulation papers were conducted during the (phase-resolved partial discharge，PRPD)模式的变化将放电损 process of damage caused by PD within the cavity of the paper; 伤过程划分为 5 个阶段，分别利用光学显微镜、扫面电镜、 and the gas constitution within the cavity was studied. 原子力显微镜和高阻仪对每一损伤阶段的绝缘表面情况进 According to phase-resolved partial discharge (PRPD) patterns, 行分析，并用气质联动仪分析了其气隙气体组分。研究结果 the damage process can be divided into five stages. For each 表明：在 5 个损伤阶段中，绝缘表面相继出现“烧蚀”、“剥 stage, surface conditions of insulation were analyzed with 皮”、“裂化分丝