全浸式蒸发冷却汽轮发电机槽内气液固三相绝缘系统的设计
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摘要
针对全浸式蒸发冷却汽轮发电机槽内气液固三相绝缘系统理论研究不够完善,缺乏绝缘系统各项参数的设计准则等问题,归纳并整理出气液固三相绝缘系统中固体绝缘材料的筛选原则,通过理论研究和仿真计算分析了气液固三相绝缘系统中槽内定子线棒角部区域圆角半径、各绝缘层的厚度对定子槽内场强的影响,提出了气液固三相绝缘系统各尺寸参数的普适性计算公式。研究结果表明,合理设计的气液固三相绝缘系统能够充分发挥蒸发冷却介质冷却效果好、绝缘性能优的特点,满足全浸式蒸发冷却汽轮发电机工程实用的需要,为今后气液固三相绝缘系统的发展提供了设计依据。
Previous study on gas-liquid-solid insulation system in the stator slot of evaporative cooling turbogenerator is mainly based on the results of simulation and experiment. In addition,theory about gasliquid-solid insulation system needs to be improved. Previous study only designed gas-liquid-solid insulation system for specific voltage level,design guidelines which are suitable for respective voltage levels also need to be proposed. Firstly,selection principles of solid insulation materials in gas-liquid-solid insulation system were presented. Besides,theoretical research and numerical simulation on gas-liquid-solid insulation system were made in order to anlayze the effect of edge radius and thickness of each insulation layer on electric field intensity. Moreover,general formulae and reasonable values of various parameters in the new insulation system were put forward. In general,the designed gas-liquid-solid insulation system can take full advantage of good cooling and insulation property of evaporative cooling medium,and meet the requirements of practical engineering. The results give the theoretical basis for the future development of gas-liquid-solid insulation system.
Previous study on gas-liquid-solid insulation system in the stator slot of evaporative cooling turbogenerator is mainly based on the results of simulation and experiment. In addition,theory about gasliquid-solid insulation system needs to be improved. Previous study only designed gas-liquid-solid insulation system for specific voltage level,design guidelines which are suitable for respective voltage levels also need to be proposed. Firstly,selection principles of solid insulation materials in gas-liquid-solid insulation system were presented. Besides,theoretical research and numerical simulation on gas-liquid-solid insulation system were made in order to anlayze the effect of edge radius and thickness of each insulation layer on electric field intensity. Moreover,general formulae and reasonable values of various parameters in the new insulation system were put forward. In general,the designed gas-liquid-solid insulation system can take full advantage of good cooling and insulation property of evaporative cooling medium,and meet the requirements of practical engineering. The results give the theoretical basis for the future development of gas-liquid-solid insulation system.
引文
[1]中国电气工程大典编委会.中国电气工程大典第9卷:电机工程[M].北京:中国电力工业出版社,2008.
[2]顾国彪,阮琳,刘斐辉,等.蒸发冷却技术的发展、应用和展望[J].电工技术学报,2015,30(11):1.GU Guobiao,RUAN Lin,LIU Feihui,et al. Development,applications and prospects of evaporative cooling technology[J]. Transactions of China Electrotechnical Society,2015,30(11):1.
[3]顾国彪,阮琳.蒸发冷却技术在水轮发电机领域的应用和发展[J].中国电机工程学报,2014,34(29):5112.GU Guobiao,RUAN Lin. Applications and developments of the evaporative cooling technology in the field of hydro-generators[J].Proceedings of the CSEE,2014,34(29):5112.
[4]国建鸿,傅德平,李振国,等.大型蒸发冷却汽轮发电机定子绕组温度计算[J].电机与控制学报,2008,12(5):509.GUO Jianhong,FU Deping,LI Zhenguo,et al. Calculation of temperature distribution in the stator of larger evaporative cooling turbo-generator[J]. Electric Machines and Control,2008,12(5):509.
[5]国建鸿,顾国彪,傅德平,等. 330 MW蒸发冷却汽轮发电机冷却技术的特点及性能[J].电工技术学报,2013,28(3):134.GUO Jianhong,GU Guobiao,FU Deping,et al. Cooling characteristics and perfomance of the 330 MW evaporative cooling turbo generator[J]. Transactions of China Electrotechnical Society,2013,28(3):134.
[6]李振国,田新东,张广强,等.电厂空冷风机变频器蒸发冷却技术改造[J].电力自动化设备,2008,28(10):116.LI Zhenguo,TIAN Xindong,ZHANG Guangqiang,et al. Evaporative cooling technology applied to inverter of power plant air-cooling fan[J]. Electric Power Automation Equipment,2008,28(10):116.
[7] LI Zhenguo,FU Deping,GUO Jianhong,et al. Study on spraying evaporative cooling technology for the large electrical machine[C]//International Conference on Electrical Machines and Systems,Tokyo,Japan. 2009:1-4.
[8]熊斌,阮琳,顾国彪,等.高功率密度蒸发冷却ECR离子源磁体线圈研制[J].电机与控制学报,2015,20(1):22.XIONG Bin,RUAN Lin,GU Guobiao,et al. Development of high power density evaporative cooling magnet coils in ECR ion source[J]. Electric Machines and Control,2015,20(1):22.
[9]熊斌,阮琳,顾国彪,等.蒸发冷却技术在高电荷态ECR离子源磁体上的应用—LECR4[J].电工技术学报,2015,30(10):219.XIONG Bin,RUAN Lin,GU Guobiao,et al. Application of evaporative cooling technology in magnet of high charge state ECR ion source-LECR4[J]. Transactions of China Electrotechnical Society,2015,30(10):219.
[10]丁舜年.大型电机的发热与冷却[M].北京:科学出版社,1992.
[11]曾文彦.全氟利昂冷却汽轮发电机转子蒸发冷却的分析与计算[D].北京:中国科学院电工研究所,1987.
[12]栾茹,顾国彪.蒸发冷却汽轮发电机定子绝缘结构的模拟试验及分析[J].大电机技术,2002,165(6):23.LUAN Ru,GU Guobiao. Simulation experimentation and analysis of the stator insulation structure for evaporative cooling turbogenerator[J]. Large Electric Machine and Hydraulic Turbine,2002,165(6):23.
[13]顾国彪.蒸发冷却应用于50 MW汽轮发电机的研究和开发[D].中国科学院电工研究所论文报告集,1992,23(7):1-15.
[14]栾茹,平建华,顾国彪. 135 MW全浸式蒸发冷却电机定子的绝缘结构[J].高电压技术,2009,35(6):1333.LUAN Ru,PING Jianhua,GU Guobiao. Stator insulation structure of 135 MW evaporative cooling turbo-generator by marinating[J]. High Voltage Engineering,2009,35(6):1333.
[15]焦晓霞,管春伟,李伟力,等.汽轮发电机不同冷却介质对定子传热特性的影响[J].电机与控制学报,2011,15(2):54.JIAO Xiaoxia,GUAN Chunwei,LI Weili,et al. Influence of different cooling medium in turbo-generator on stator heat transfer characteristics[J]. Electric Machines and Control,2011,15(2):54.
[16]栾茹.卧式蒸发冷却电机定子的绝缘与传热[M].北京:科学出版社,2009.
[17]栾茹.卧式蒸发冷却电机定子绝缘与传热系统的研究[D].北京:中国科学院电工研究所,2004.
[18]栾茹,傅德平. 24 k V蒸发冷却汽轮发电机定子绝缘结构的可行性研究[J].中国电机工程学报,2005,25(11):101.LUAN Ru,FU Deping. Feasible research on stator insulation structure of 24kV rated evaporative cooling generator[J]. Proceedings of the CSEE,2005,25(11):101.
[19]胡海涛. 1 000 MW汽轮发电机定子线棒电场分布的数值计算[D].哈尔滨:哈尔滨理工大学,2010.
[20]隋银德.高压电机绝缘系统的研究[D].哈尔滨:哈尔滨理工大学,2004.
[21]张瑞钧,刘上椿.高压大型汽轮发电机定子线圈主绝缘结构优化设计[J].大电机技术,1997,4:31.ZHANG Ruijun,LIU Shangchun. Optimized design of the stator coil main insulation for H. V. large turbogenerator[J]. Large Electric Machine and Hydraulic Turbine,1997,4:31.
[22]孟大伟,姜明丽.高效高压中型异步电机绝缘结构设计分析[J].电机与控制学报,2012,16(4):13.MENG Dawei,JIANG Mingli. Design and analysis of insulation structure for middle size induction motor with high efficiency and high voltage[J]. Electric Machines and Control,2012,16(4):13.
[23]隋银德,傅岚贵.高压电机定子线圈电场分布的改善[J].大电机技术,2001,2:22.SUI Yinde,FU Langui. Improvement of electric field distribution of stator coil for HV electric machinery[J]. Large Electric Machine and Hydraulic Turbine,2001,2:22.
[24]赵慧春.高压电机定子线棒绝缘结构设计及其性能研究[D].哈尔滨:哈尔滨理工大学,2008.
[2]顾国彪,阮琳,刘斐辉,等.蒸发冷却技术的发展、应用和展望[J].电工技术学报,2015,30(11):1.GU Guobiao,RUAN Lin,LIU Feihui,et al. Development,applications and prospects of evaporative cooling technology[J]. Transactions of China Electrotechnical Society,2015,30(11):1.
[3]顾国彪,阮琳.蒸发冷却技术在水轮发电机领域的应用和发展[J].中国电机工程学报,2014,34(29):5112.GU Guobiao,RUAN Lin. Applications and developments of the evaporative cooling technology in the field of hydro-generators[J].Proceedings of the CSEE,2014,34(29):5112.
[4]国建鸿,傅德平,李振国,等.大型蒸发冷却汽轮发电机定子绕组温度计算[J].电机与控制学报,2008,12(5):509.GUO Jianhong,FU Deping,LI Zhenguo,et al. Calculation of temperature distribution in the stator of larger evaporative cooling turbo-generator[J]. Electric Machines and Control,2008,12(5):509.
[5]国建鸿,顾国彪,傅德平,等. 330 MW蒸发冷却汽轮发电机冷却技术的特点及性能[J].电工技术学报,2013,28(3):134.GUO Jianhong,GU Guobiao,FU Deping,et al. Cooling characteristics and perfomance of the 330 MW evaporative cooling turbo generator[J]. Transactions of China Electrotechnical Society,2013,28(3):134.
[6]李振国,田新东,张广强,等.电厂空冷风机变频器蒸发冷却技术改造[J].电力自动化设备,2008,28(10):116.LI Zhenguo,TIAN Xindong,ZHANG Guangqiang,et al. Evaporative cooling technology applied to inverter of power plant air-cooling fan[J]. Electric Power Automation Equipment,2008,28(10):116.
[7] LI Zhenguo,FU Deping,GUO Jianhong,et al. Study on spraying evaporative cooling technology for the large electrical machine[C]//International Conference on Electrical Machines and Systems,Tokyo,Japan. 2009:1-4.
[8]熊斌,阮琳,顾国彪,等.高功率密度蒸发冷却ECR离子源磁体线圈研制[J].电机与控制学报,2015,20(1):22.XIONG Bin,RUAN Lin,GU Guobiao,et al. Development of high power density evaporative cooling magnet coils in ECR ion source[J]. Electric Machines and Control,2015,20(1):22.
[9]熊斌,阮琳,顾国彪,等.蒸发冷却技术在高电荷态ECR离子源磁体上的应用—LECR4[J].电工技术学报,2015,30(10):219.XIONG Bin,RUAN Lin,GU Guobiao,et al. Application of evaporative cooling technology in magnet of high charge state ECR ion source-LECR4[J]. Transactions of China Electrotechnical Society,2015,30(10):219.
[10]丁舜年.大型电机的发热与冷却[M].北京:科学出版社,1992.
[11]曾文彦.全氟利昂冷却汽轮发电机转子蒸发冷却的分析与计算[D].北京:中国科学院电工研究所,1987.
[12]栾茹,顾国彪.蒸发冷却汽轮发电机定子绝缘结构的模拟试验及分析[J].大电机技术,2002,165(6):23.LUAN Ru,GU Guobiao. Simulation experimentation and analysis of the stator insulation structure for evaporative cooling turbogenerator[J]. Large Electric Machine and Hydraulic Turbine,2002,165(6):23.
[13]顾国彪.蒸发冷却应用于50 MW汽轮发电机的研究和开发[D].中国科学院电工研究所论文报告集,1992,23(7):1-15.
[14]栾茹,平建华,顾国彪. 135 MW全浸式蒸发冷却电机定子的绝缘结构[J].高电压技术,2009,35(6):1333.LUAN Ru,PING Jianhua,GU Guobiao. Stator insulation structure of 135 MW evaporative cooling turbo-generator by marinating[J]. High Voltage Engineering,2009,35(6):1333.
[15]焦晓霞,管春伟,李伟力,等.汽轮发电机不同冷却介质对定子传热特性的影响[J].电机与控制学报,2011,15(2):54.JIAO Xiaoxia,GUAN Chunwei,LI Weili,et al. Influence of different cooling medium in turbo-generator on stator heat transfer characteristics[J]. Electric Machines and Control,2011,15(2):54.
[16]栾茹.卧式蒸发冷却电机定子的绝缘与传热[M].北京:科学出版社,2009.
[17]栾茹.卧式蒸发冷却电机定子绝缘与传热系统的研究[D].北京:中国科学院电工研究所,2004.
[18]栾茹,傅德平. 24 k V蒸发冷却汽轮发电机定子绝缘结构的可行性研究[J].中国电机工程学报,2005,25(11):101.LUAN Ru,FU Deping. Feasible research on stator insulation structure of 24kV rated evaporative cooling generator[J]. Proceedings of the CSEE,2005,25(11):101.
[19]胡海涛. 1 000 MW汽轮发电机定子线棒电场分布的数值计算[D].哈尔滨:哈尔滨理工大学,2010.
[20]隋银德.高压电机绝缘系统的研究[D].哈尔滨:哈尔滨理工大学,2004.
[21]张瑞钧,刘上椿.高压大型汽轮发电机定子线圈主绝缘结构优化设计[J].大电机技术,1997,4:31.ZHANG Ruijun,LIU Shangchun. Optimized design of the stator coil main insulation for H. V. large turbogenerator[J]. Large Electric Machine and Hydraulic Turbine,1997,4:31.
[22]孟大伟,姜明丽.高效高压中型异步电机绝缘结构设计分析[J].电机与控制学报,2012,16(4):13.MENG Dawei,JIANG Mingli. Design and analysis of insulation structure for middle size induction motor with high efficiency and high voltage[J]. Electric Machines and Control,2012,16(4):13.
[23]隋银德,傅岚贵.高压电机定子线圈电场分布的改善[J].大电机技术,2001,2:22.SUI Yinde,FU Langui. Improvement of electric field distribution of stator coil for HV electric machinery[J]. Large Electric Machine and Hydraulic Turbine,2001,2:22.
[24]赵慧春.高压电机定子线棒绝缘结构设计及其性能研究[D].哈尔滨:哈尔滨理工大学,2008.
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