交流特高压支柱瓷绝缘子的自然积污特性研究

发布时间：2018-03-17 14:33

本文选题：特高压支柱瓷绝缘子　切入点：污秽度测量　出处：《电网技术》2014年11期 　论文类型：期刊论文

【摘要】：为研究特高压支柱瓷绝缘子的自然积污规律,重点对荆门特高压变电站运行的支柱瓷绝缘子进行了连续3 a的积污检测。测量了盐密(equivalent salt deposit density,ESDD)、灰密(non soluble deposit density,NSDD)及污秽成分,对比分析了伞裙上表面与下表面、迎风面与背风面、平均直径、连续积污等对支柱绝缘子自然积污特性的影响规律。结果表明,1 a的积污期条件下(2010年4月至2011年4月):1)单个1000k V支柱瓷绝缘子整柱污秽分布较不均匀,高压端与其他部位的ESDD平均比值为3.4,NSDD平均比值为2.3。2)绝缘子伞裙上表面污秽度普遍高于下表面。上下表面ESDD不均匀积污比平均为1.8,上下表面NSDD不均匀积污比平均为1.6。3)绝缘子伞裙背风面污秽度普遍高于迎风面。ESDD迎风面与背风面不均匀积污比平均为0.64,NSDD迎风面与背风面不均匀积污比平均为0.55。4)饱和ESDD与连续积污时间不成正比关系,而NSDD基本与连续积污时间成正比关系。5)ESDD和NSDD随平均直径的增大呈下降趋势。6)绝缘子表面污秽物中CaS O4含量平均为68%。研究结果可为我国特高压工程外绝缘设计、产品制造和运行检修提供参考。
[Abstract]:The contamination of natural law as the research of UHV strut porcelain insulator, focusing on 3 consecutive a contamination detection of strut porcelain insulator Jingmen UHV substation operation. The measurement of salt density (equivalent salt deposit density ESDD (non) soluble deposit, NSDD density, NSDD) and pollution components, comparative analysis the upper surface and the lower surface of the umbrella skirt, windward and leeward, average diameter, influence of continuous accumulated pollution such as pollution deposition of natural insulators. The results showed that 1 a contamination conditions (April 2010 to April 2011): 1) a single 1000K V post insulator whole column contamination distribution is not uniform the average ratio of ESDD, high end and other parts of the NSDD was 3.4, the average ratio is 2.3.2) on the insulator surface contamination degree is generally higher than the lower surface. The ESDD surface uneven dirt than an average of 1.8, NSDD on the surface of uneven dirt than The average is 1.6.3) insulator contamination on the leeward side is generally higher than the windward leeward and windward.ESDD uneven dirt than an average of 0.64 NSDD, windward and leeward uneven dirt than average 0.55.4) saturated ESDD and continuous contamination is not proportional to the time, and the NSDD based and continuous product waste time is proportional to the relationship between.5 ESDD and NSDD) with the average diameter of the increase of.6 decreased the content of O4 CaS) insulation design of insulators in average 68%. results for our UHV project, provide reference for product manufacturing and maintenance.

【作者单位】：中国电力科学研究院;武汉大学电气工程学院;
【基金】：国家电网公司重点科技项目(SGTGY[2009]671)~~
【分类号】：TM216

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