|
|
|
| Study on Surface Discharge Characteristics of Inter-Turn Insulation Materials in High-Frequency Transformers |
| Zhao Yikun1,2, Zhang Guoqiang1,2, Han Dong1,2, Yang Fuyao3, Liu Yang3 |
1. Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China;
2. University of Chinese Academy of Sciences Beijing 100039 China;
3. Global Energy Interconnection Research Institute Beijing 102209 China |
|
|
|
|
Abstract Flashover is one of the main reasons for inter-turn insulation failures of high-frequency transformers. In order to investigate the surface discharge characteristics of insulation materials, an experimental platform with high frequency power source was built. The high frequency surface discharge tests with Nomex paper, modified DMD paper, PET film and polyimide film under 0~20kV, 1~20kHz of bipolar square wave voltage were performed. The two-parameter Weibull statistic method was used to analyze the influence of the discharge gap on flashover voltages. Based on the secondary electron emission avalanche (SEEA) model, the variation of incipient discharge voltage and flashover voltage with frequency was analyzed. An inverse power function model for estimating the surface insulation lifetime was proposed. Finally, the surface discharge characteristics of insulation materials under high-frequency high-voltage were comprehensively evaluated.
|
|
Received: 01 June 2018
Published: 02 September 2019
|
|
|
|
|
|
[1] Zong Sheng, Zhu Qianlai, Yu Wensong, et al.Auxiliary power supply for solid state transformer with ultra-high voltage capacitive driving[C]//IEEE Applied Power Electronics Conference and Exposition, Charlotte, USA, 2015: 1008-1013.
[2] 李子欣, 王平, 楚遵方, 等. 面向中高压智能配电网的电力电子变压器研究[J]. 电网技术, 2013, 37(9): 2592-2601.
Li Zixin, Wang Ping, Chu Zunfang, et al.Research on medium and high-voltage smart distribution grid oriented power electronic transformer[J]. Power System Technology, 2013, 37(9): 2592-2601.
[3] 陈彬, 李琳, 赵志斌. 双向全桥DC-DC变换器中大容量高频变压器绕组与磁心损耗计算[J]. 电工技术学报, 2017, 32(22): 123-133.
Chen Bin, Li Lin, Zhao Zhibin.Calculation of high- power high-frequency transformer’s copper loss and magnetic core loss in dual-active-bridge DC-DC converter[J]. Transactions of China Electrotechnical Society, 2017, 32(22): 123-133.
[4] 兰征, 涂春鸣, 肖凡, 等. 电力电子变压器对交直流混合微网功率控制的研究[J]. 电工技术学报, 2015, 30(23): 50-57.
Lan Zheng, Tu Chunming, Xiao Fan, et al.The power control of power electronic transformers in hybrid AC-DC microgrid[J]. Transactions of China Electro- technical Society, 2015, 30(23): 50-57.
[5] Qin Hengsi, Kimball J W.Solid-state transformer architecture using AC-AC dual-active-bridge con- verter[J]. IEEE Transactions on Industrial Electro- nics, 2013, 60(9): 3720-3730.
[6] 张雪垠, 徐永海, 肖湘宁. 适用于中高压配电网的高功率密度谐振型级联H桥固态变压器[J]. 电工技术学报, 2018, 33(2): 310-321.
Zhang Xueyin, Xu Yonghai, Xiao Xiangning.A high power density resonance cascaded H-bridge solid- state transformer for medium and high voltage distribution network[J]. Transactions of China Electrotechnical Society, 2018, 33(2): 310-321.
[7] 韩帅, 李庆民, 刘伟杰, 等. 温-频耦合效应对高频固态变压器绝缘局部放电特性的影响[J]. 电工技术学报, 2015, 30(2): 204-210.
Han Shuai, Li Qingmin, Liu Weijie, et al.Impacts of coupled temperature-frequency effects on partial discharge characteristics of high frequency solid state transformer insulation[J]. Transactions of China Electrotechnical Society, 2015, 30(2): 204-210.
[8] 周立军, 刘继午, 刘洋, 等. 方波脉冲电压下温度对聚酰亚胺薄膜电气绝缘性能的影响[J]. 高电压技术, 2015, 41(2): 396-402.
Zhou Lijun, Liu Jiwu, Liu Yang, et al.Effect of temperature on the electrical properties of polyimide films under square impulse voltage[J]. High Voltage Engineering, 2015, 41(2): 396-402.
[9] 李盛涛, 聂永杰, 闵道敏, 等. 固体电介质真空沿面闪络研究进展[J]. 电工技术学报, 2017, 32(8): 1-9.
Li Shengtao, Nie Yongjie, Min Daomin, et al.Research progress on vacuum surface flashover of solid dielectrics[J]. Transactions of China Electro- technical Society, 2017, 32(8): 1-9.
[10] 孟晓波, 梅红伟, 陈昌龙, 等. 绝缘介质表面流注发展特性的机理研究[J]. 中国电机工程学报, 2013, 33(22): 155-165.
Meng Xiaobo, Mei Hongwei, Chen Changlong, et al.Research on characteristics of streamer propagation along insulation surface[J]. Proceedings of the CSEE, 2013, 33(22): 155-165.
[11] Yi Xiao, Wang Zhongdong.The influence of solid surface on the propagation of creepage discharge in insulating liquids[J]. IEEE Transactions on Diele- ctrics and Electrical Insulation, 2015, 22(1): 303-312.
[12] Chen Yu, Cheng Yonghong, Wu Kai, et al.Flashover characteristic of epoxy composites filled with different micro-inorganic oxide particles under nanosecond pulse in vacuum[J]. IEEE Transactions on Plasma Science, 2009, 37(1): 195-203.
[13] 李元, 张冠军, 梁钰, 等. 不同热老化程度下油纸绝缘沿面放电发展特性[J]. 高电压技术, 2017, 43(3): 923-930.
Li Yuan, Zhang Guanjun, Liang Yu, et al.Evolu- tionary characteristics of surface discharge within oil-paper insulation under different thermally aged conditions[J]. High Voltage Engineering, 2017, 43(3): 923-930.
[14] 金福宝, 周远翔, 黄建文, 等. 温度对交直流复合电场下油纸绝缘沿面放电特性的影响[J]. 高电压技术, 2017, 43(3): 931-939.
Jin Fubao, Zhou Yuanxiang, Huang Jianwen, et al.Effects of temperature on creepage discharge characteristics of paper-oil insulation under com- bined AC-DC voltage[J]. High Voltage Engineering, 2017, 43(3): 931-939.
[15] 罗杨, 吴广宁, 刘继午, 等. 表面放电对聚酰亚胺薄膜材料的电气损伤特性研究[J]. 中国电机工程学报, 2013, 33(25): 187-195.
Luo Yang, Wu Guangyu, Liu Jiwu, et al.Electrical damage characteristics of polyimide film caused by surface discharge[J]. Proceedings of the CSEE, 2013, 33(25): 187-195.
[16] 刘涛, 韩帅, 李庆民, 等. 频变电应力下高频电力变压器绝缘沿面放电形态及发展过程[J]. 电工技术学报, 2016, 31(19): 199-207.
Liu Tao, Han Shuai, Li Qingmin, et al.Patterns and development of the surface discharge of high frequency power transformer insulation under frequency- dependent electric stress[J]. Transactions of China Electrotechnical Society, 2016, 31(19): 199-207.
[17] 刘熊, 林海丹, 梁义明, 等. 空气中微秒脉冲沿面放电对环氧树脂表面特性影响研究[J]. 电工技术学报, 2015, 30(13): 158-165.
Liu Xiong, Lin Haidan, Liang Yiming, et al.Effect of atmospheric-pressure microsecond pulsed discharges on epoxy resin surface[J]. Transactions of China Electrotechnical Society, 2015, 30(13): 158-165.
[18] 李盛涛, 张拓, 黄奇峰, 等. 变压器油纸绝缘结构的击穿电压与频率和时间的关系[J]. 变压器, 2009, 46(4): 39-43.
Li Shengtao, Zhang Tuo, Huang Qifeng, et al.Relation among breakdown voltage, frequency and time in oil-paper insulation of transformer[J]. Transformer, 2009, 46(4): 39-43.
[19] 李晓虎, 李剑, 孙才新, 等. 植物油-纸绝缘的电老化寿命试验研究[J]. 中国电机工程学报, 2007, 27(9): 18-22.
Li Xiaohu, Li Jian, Sun Caixin, et al.Study on electrical aging lifetime of vegetable oil-paper insulation[J]. Proceedings of the CSEE, 2007, 27(9): 18-22.
[20] Ebisawa Y, Yamada S, Mori S, et al.DC creepage breakdown characteristics of oil-immersed insula- tion[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2009, 16(6): 1686-1692.
[21] 谢庆, 付可欣, 陆路, 等. 环氧树脂真空沿面闪络后表面形貌的AFM分析及分形特征提取[J]. 电工技术学报, 2017, 32(16): 245-255.
Xie Qing, Fu Kexin, Lu Lu, et al.AFM analysis and fractal characteristics extraction of the surface morphology of epoxy resin after vacuum flashover[J]. Transactions of China Electrotechnical Society, 2017, 32(16): 245-255.
[22] GB/T 16935B/T 16935.4-2011 低压系统内设备的绝缘配合第4部分: 高频电压应力考虑事项[S]. 北京: 中国标准出版社, 2011.
[23] 齐波, 魏振, 李成榕, 等. 交直流复合电场中油纸绝缘沿面放电现象及特征[J]. 电工技术学报, 2016, 31(10): 59-67.
Qi Bo, Wei Zhen, Li Chengrong, et al.The phenomena and characteristics of oil-paper insulation surface discharge under AC and DC voltage[J]. Transactions of China Electrotechnical Society, 2016, 31(10): 59-67.
[24] 李英葆, 陈京生. 绝缘材料便查手册[M]. 北京: 中国电力出版社, 2010.
[25] 王树森. 变压器绝缘材料[J]. 变压器, 2003, 40(3): 44-46.
Wang Shusen.Transformer insulation material[J]. Transformer, 2003, 40(3): 44-46.
[26] GB/T 1408B/T 1408.1-2006 绝缘材料电气强度试验方法[S]. 北京: 中国标准出版社, 2006.
[27] 张冠军, 赵文斌, 郑楠, 等. 真空中固体绝缘沿面闪络现象的研究进展[J]. 高电压技术, 2007, 33(7): 30-35.
Zhang Guanjun, Zhao Wenbin, Zheng Nan, et al.Research progress on surface flashover phenomena across solid insulation in vacuum[J]. High Voltage Engineering, 2007, 33(7): 30-35.
[28] 曹晓珑, 钟力生. 电气绝缘技术基础[M]. 北京: 机械工业出版社, 2009. |
|
|
|
2019, Vol. 34 
