水轮发电机单支线棒真空压力浸渍工艺研发
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摘要
本文介绍了天发水电公司单支线棒真空压力浸渍(SVPI)绝缘体系的研发过程。经过大量的调研、样棒的反复试制试验,最终确定了绝缘材料、防晕材料、工艺过程、设备需求等。经第三方试验,所研发的SVPI线棒可以达到优等品水平。本文所提出的SVPI技术实现了多方面的突破:从绝缘材料、防晕材料到生产设备均采用中国制造,全面实现国产化;防晕结构采用前处理工艺,与主绝缘一起一次成型,减少了对防晕层的污染;采用工装预夹紧方式,操作方便、安全,提高了生产效率。经过在真机上的实际应用,证明所采用的技术路线是成熟可靠的。
The development of vacuum pressure impregnation of single stator bar(SVPI) is described in this paper. After a lot of research and sample testing, the insulating material,anti-corona material, technology process and equipment requirements are determined. The developed SVPI bars are estimated as superior product by a third party test. The proposed technology has achieved many breakthroughs: all the insulating materials, anti-corona materials and manufacturing equipment were made in China. The anti-corona structure was pretreated and formed with main insulation once for all, avoiding contamination on the anti-corona coating,pre-pressurized method was adopted on tooling, which is convenient, safe and efficient. Application on actual operation of generator proved that the proposed technology is mature and reliable.
The development of vacuum pressure impregnation of single stator bar(SVPI) is described in this paper. After a lot of research and sample testing, the insulating material,anti-corona material, technology process and equipment requirements are determined. The developed SVPI bars are estimated as superior product by a third party test. The proposed technology has achieved many breakthroughs: all the insulating materials, anti-corona materials and manufacturing equipment were made in China. The anti-corona structure was pretreated and formed with main insulation once for all, avoiding contamination on the anti-corona coating,pre-pressurized method was adopted on tooling, which is convenient, safe and efficient. Application on actual operation of generator proved that the proposed technology is mature and reliable.
引文
[1]胡春秀,卢春莲.发电机单只定子线棒VPI绝缘系统研究[J].大电机技术,2013(1):1-3,21.
[2]漆临生,皮如贵,梁智明.发电机单只线棒VPI绝缘系统研究[J].东方电机,2007(4):35-44.
[3]郑伟,卢春莲.发电机单只定子线棒VPI绝缘系统研究[J].大电机技术,2013(1).
[4]毛继业,远藤,等.国产化高压电机单只VPI定子线棒绝缘系统开发和研究[C].第十七次中国水电设备学术讨论会,2009.10.
[5]王文,夏宇,王见之.干法高透气性少胶云母带的制备及其性能研究[J].绝缘材料,2013,4635-39.
[6]Rudolf Brütsch.发电机绝缘失效机理[J].国外大电机,2010(1):44-49.
[7]宁方为,张平,钱冠华.JF-9955环氧酸酐VPI树脂的工艺研究[J].绝缘材料,2012,45:46-48.
[8]满宇光.大型高压发电机的绝缘材料发展概述[J].绝缘材料,2014(1):12-16.
[9]吴丹,虞鑫海,徐永芬,等.国内外真空压力浸渍树脂的发展现状[J].绝缘材料,2008,41(5):23-26.
[10]付强,满宇光,等.大型发电机定子线棒VPI用绝缘材料的国产化应用研究[J].大电机技术2016(2).
[11]邱昌容,曹晓珑.电气绝缘测试技术[M].2014,27-31.
[12]刘其昶.电气绝缘结构设计原理下册[M].2008235-240.
[13]伍尚华,吴学明,韩勇,杨波,唐安斌.环氧酸酐型主绝缘VPI配套材料国产化探索[C].第十届绝缘材料和绝缘学术交流会议文集[A]161-166.
[14]]关玉薇,张连彬,等.大型水轮发电机环氧粉云母绝缘的老化诊断和寿命预测[J].大电机技术,1998(2).
[15]DS/ZJ011-2002,水轮发电机分等标准[S].
[16]JB/T7608-2006,测量高压交流电机线圈介质损耗角正切试验方法及限制[S].
[17]JB/T6204-2002,高压交流电机定子线圈及绕组绝缘耐电压试验规范[S].
[18]满宇光.绕组端部表面全覆盖防晕结构电机绝缘的泄漏电流[J].大电机技术,2006(6).
[2]漆临生,皮如贵,梁智明.发电机单只线棒VPI绝缘系统研究[J].东方电机,2007(4):35-44.
[3]郑伟,卢春莲.发电机单只定子线棒VPI绝缘系统研究[J].大电机技术,2013(1).
[4]毛继业,远藤,等.国产化高压电机单只VPI定子线棒绝缘系统开发和研究[C].第十七次中国水电设备学术讨论会,2009.10.
[5]王文,夏宇,王见之.干法高透气性少胶云母带的制备及其性能研究[J].绝缘材料,2013,4635-39.
[6]Rudolf Brütsch.发电机绝缘失效机理[J].国外大电机,2010(1):44-49.
[7]宁方为,张平,钱冠华.JF-9955环氧酸酐VPI树脂的工艺研究[J].绝缘材料,2012,45:46-48.
[8]满宇光.大型高压发电机的绝缘材料发展概述[J].绝缘材料,2014(1):12-16.
[9]吴丹,虞鑫海,徐永芬,等.国内外真空压力浸渍树脂的发展现状[J].绝缘材料,2008,41(5):23-26.
[10]付强,满宇光,等.大型发电机定子线棒VPI用绝缘材料的国产化应用研究[J].大电机技术2016(2).
[11]邱昌容,曹晓珑.电气绝缘测试技术[M].2014,27-31.
[12]刘其昶.电气绝缘结构设计原理下册[M].2008235-240.
[13]伍尚华,吴学明,韩勇,杨波,唐安斌.环氧酸酐型主绝缘VPI配套材料国产化探索[C].第十届绝缘材料和绝缘学术交流会议文集[A]161-166.
[14]]关玉薇,张连彬,等.大型水轮发电机环氧粉云母绝缘的老化诊断和寿命预测[J].大电机技术,1998(2).
[15]DS/ZJ011-2002,水轮发电机分等标准[S].
[16]JB/T7608-2006,测量高压交流电机线圈介质损耗角正切试验方法及限制[S].
[17]JB/T6204-2002,高压交流电机定子线圈及绕组绝缘耐电压试验规范[S].
[18]满宇光.绕组端部表面全覆盖防晕结构电机绝缘的泄漏电流[J].大电机技术,2006(6).