基于紫外成像法的发电机定子电晕处理效果定量评估研究
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摘要
利用紫外成像检测技术对两台320MW发电机定子绕组端部的电晕放电情况进行了定量表征。定量评估了发电机定子绕组检修前和检修后的设备状态。研究结果表明,紫外成像检测技术在敏感度、影像放大度等方面的性能优异,可以很好地为电晕定性定位,并对表面电晕处理效果进行定量评估。采用表面电晕处理法对发电机定子绕组部件修补后可降低16.05%～54.09%的电晕放电,可以有效地降低定子绕组电晕的产生。
The study focused on the quantitative analysis of corona discharge of the stator end windings of two 320 MW generators by ultraviolet imaging detection technology. The generator stator winding state after overhaul is quantitatively evaluated. The results show that ultraviolet imaging detection technology has good performance in sensitivity, image magnification and other aspects. It can well locate and qualitative the corona, and quantitatively analyze the effect of corona treatment. The method of corona local treatment can reduce the corona discharge of 16.05% ～54.09%. This method can effectively reduce the generation of stator winding corona.
The study focused on the quantitative analysis of corona discharge of the stator end windings of two 320 MW generators by ultraviolet imaging detection technology. The generator stator winding state after overhaul is quantitatively evaluated. The results show that ultraviolet imaging detection technology has good performance in sensitivity, image magnification and other aspects. It can well locate and qualitative the corona, and quantitatively analyze the effect of corona treatment. The method of corona local treatment can reduce the corona discharge of 16.05% ～54.09%. This method can effectively reduce the generation of stator winding corona.
引文
[1]陶军华,杨军,曹军峰.330MW空冷发电机组端部电晕分析与处理工艺[C].全国火电大机组(300MW级)竞赛第38届年会,2009.
[2]LU Wene,JIANG Xiuchen,HAN Zhendong Electric field analysis at the end of large generator stator windings[C].IEEE Powertech Conference2003,(2):709-712.
[3]郑刚.汽轮发电机定子线圈及绕组局部放电的试验研究[D].上海交通大学,2013.
[4]杨琳.发电机过电压及其对绝缘老化的影响分析[D].西南交通大学,2008.
[5]戴日俊.基于紫外光信号的发电厂高压电气设备放电检测方法研究[D].华北电力大学(保定)华北电力大学,2012.
[6]王胜辉,冯宏恩,律方成.基于日盲紫外成像检测的复合绝缘子电晕放电光子数变化特性[J].高电压技术,2014,40(8):2360-2366.
[7]ZANG Chunyan,ZHAO Xinjie,HE Shuang,et al Research on Mechanism and Ultraviolet Imaging of Corona Discharge of Electric Device Faults[C]IEEE International Symposium on Electrical Insulation,2008:690-693.
[8]MA Bin,ZHOU Wenjun,WANG Tao,et al.An Experimental Investigations on Applicable Criterion for AC Corona Discharge Evolvement of Rod-plane Gap Based on UV Digital Image Processing[C].IEEE international Symposium on Electrical Insulation2008.
[9]崔婷.紫外光传感器用于电气设备局部放电检测的试验研究[D].重庆大学,2008.
[10]胡海涛.1000MW汽轮发电机定子线棒电场分布的数值计算[D].哈尔滨理工大学,2010.
[11]王少华,梅冰笑,叶自强,等.紫外成像检测技术及其在电气设备电晕放电检测中的应用[J].高压电器,2011,47(11):92-97.
[12]石元纯.高井320MW空冷发电机绕组端部电晕超标分析与处理工艺[J].工程技术(文摘版),2007,(3):297-297.
[13]李传扬.高压电机定子绕组局部放电指纹库建立方法及放电模式识别技术研究[D].太原理工大学2014.
[14]马山刚.高海拔条件下发电机电晕特性研究[D].青海大学,2010.
[15]田锋,和海顺.发电机定子线棒防晕层破坏原因分析及处理[J].水电站机电技术,2006,29(6):58-60.
[16]DL/T 298-2011,发电机定子绕组端部电晕检测与评定导则[S].国家能源局,2011.
[2]LU Wene,JIANG Xiuchen,HAN Zhendong Electric field analysis at the end of large generator stator windings[C].IEEE Powertech Conference2003,(2):709-712.
[3]郑刚.汽轮发电机定子线圈及绕组局部放电的试验研究[D].上海交通大学,2013.
[4]杨琳.发电机过电压及其对绝缘老化的影响分析[D].西南交通大学,2008.
[5]戴日俊.基于紫外光信号的发电厂高压电气设备放电检测方法研究[D].华北电力大学(保定)华北电力大学,2012.
[6]王胜辉,冯宏恩,律方成.基于日盲紫外成像检测的复合绝缘子电晕放电光子数变化特性[J].高电压技术,2014,40(8):2360-2366.
[7]ZANG Chunyan,ZHAO Xinjie,HE Shuang,et al Research on Mechanism and Ultraviolet Imaging of Corona Discharge of Electric Device Faults[C]IEEE International Symposium on Electrical Insulation,2008:690-693.
[8]MA Bin,ZHOU Wenjun,WANG Tao,et al.An Experimental Investigations on Applicable Criterion for AC Corona Discharge Evolvement of Rod-plane Gap Based on UV Digital Image Processing[C].IEEE international Symposium on Electrical Insulation2008.
[9]崔婷.紫外光传感器用于电气设备局部放电检测的试验研究[D].重庆大学,2008.
[10]胡海涛.1000MW汽轮发电机定子线棒电场分布的数值计算[D].哈尔滨理工大学,2010.
[11]王少华,梅冰笑,叶自强,等.紫外成像检测技术及其在电气设备电晕放电检测中的应用[J].高压电器,2011,47(11):92-97.
[12]石元纯.高井320MW空冷发电机绕组端部电晕超标分析与处理工艺[J].工程技术(文摘版),2007,(3):297-297.
[13]李传扬.高压电机定子绕组局部放电指纹库建立方法及放电模式识别技术研究[D].太原理工大学2014.
[14]马山刚.高海拔条件下发电机电晕特性研究[D].青海大学,2010.
[15]田锋,和海顺.发电机定子线棒防晕层破坏原因分析及处理[J].水电站机电技术,2006,29(6):58-60.
[16]DL/T 298-2011,发电机定子绕组端部电晕检测与评定导则[S].国家能源局,2011.