Effect of Thermal Aging on the Characteristic to Withstand Switching Overvoltage of Interturn Insulation of Dry-Type Air Core Power Reactor
Nie Hongyan1, Wei Xinlao1, Yao Yuanhang1, Zhu Bo1, Yu Chunlai2
1. Key Laboratory of Engineering Dielectrics and Its Application Harbin University of Science and Technology Harbin 150080 China; 2. Electric Power Research Institute State Grid Heilongjiang Electric Power Company Limited Harbin 150030 China
Abstract In order to study the influence of thermal aging on the characteristics of withstand switching overvoltage in the turn-to-turn insulation of dry-type air-core reactors, the test of the withstand overvoltage number in turn-to-turn insulation model specimens under different the degrees of thermal aging was carried out. Then, the functional model between the withstand overvoltage number and the degree of thermal aging was obtained. The variations of the electrical parameters of model specimens with the degree of thermal aging were analyzed, such as breakdown voltage, insulation resistance, partial discharge, elongation, tensile strength, and surface morphology of polyester film. Accordingly, the influence mechanism of thermal aging on the withstand characteristics of switching overvoltage in the turn-to-turn insulation of dry-type air-core reactors was analyzed, The results show that thermal aging will not lead to the decrease in electrical properties of turn-to-turn insulation, such as breakdown voltage, insulation resistance and partial discharge. The decrease in the mechanical properties of polyester film caused by thermal aging is the fundamental reason for the exponential decrease in the withstand overvoltage characteristics of the turn-to-turn insulation of dry-type air-core power reactors. This paper can lay a foundation for further development of the degradation mechanism of turn-to-turn insulation of dry-type air-core power reactors under the combined action of multiple factors.
Nie Hongyan,Wei Xinlao,Yao Yuanhang等. Effect of Thermal Aging on the Characteristic to Withstand Switching Overvoltage of Interturn Insulation of Dry-Type Air Core Power Reactor[J]. Transactions of China Electrotechnical Society, 2020, 35(24): 5096-5104.
[1] 张鹏宇, 李琳, 程志光, 等. 并联电抗器与变压器模型铁芯振动仿真与试验对比[J]. 电工技术学报, 2018, 33(22): 5273-5281. Zhang Pengyu, Li Lin, Cheng Zhiguang, et al.Vibration simulation and experiment comparison of shunt reactor and transformer model core[J]. Transa- ctions of China Electrotechnical Society, 2018, 33(22): 5273-5281. [2] Enohnyaket M, Ekman J.Analysis of air-core reactors from DC to very high frequencies using PEEC models[J]. IEEE Transactions on Power Delivery, 2009, 24(2): 719-729. [3] 邱清泉, 肖立业, 张志丰, 等. 应用于谐振型限流器的双分裂铁心电抗器研究[J]. 电工技术学报, 2017, 32(3): 164-171. Qiu Qingquan, Xiao Liye, Zhang Zhifeng, et al.Investigation of double-splitting iron reactor used in resonant type fault current limiter[J]. Transactions of China Electrotechnical Society, 2017, 32(3): 164-171. [4] 魏新劳, 朱博, 聂洪岩, 等. 干式空心电抗器匝间绝缘故障位置与电气参数之间关系[J]. 电机与控制学报, 2020, 24(4): 71-79. Wei Xinlao, Zhu Bo, Nie Hongyan, et al.Relation- ship between electrical parameters and turn-to-turn insulation fault position of dry-type air-core reactor[J]. Electric Machines and Control, 2020, 24(4): 71-79. [5] Das S, Sidhu T S, Zadeh M R D, et al. A novel hybrid differential algorithm for turn to turn fault detection in shunt reactors[J]. IEEE Transactions on Power Delivery, 2017, 32(6): 2537-2545. [6] 黄新波, 周岩, 朱永灿, 等. 干式空心电抗器匝间短路故障在线监测技术[J]. 电力系统自动化, 2019, 43(2): 150-155. Huang Xinbo, Zhou Yan, Zhu Yongcan, et al.On-line monitoring technology for inter-turn short circuit fault of dry aircore reactor[J]. Automation of Electric Power Systems, 2019, 43(2): 150-155. [7] 郭绍伟, 牛铮, 李昊扬, 等. 干式空心电抗器匝间过电压的诊断判据[J]. 高电压技术, 2018, 44(3): 804-811. Guo Shaowei, Niu Zheng, Li Haoyang, et al.Diagno- stic criterion of turn-to-turn overvoltage test in dry- type air-core reactor[J]. High Voltage Engineering, 2018, 44(3): 804-811. [8] 马超, 赵彦珍, 马西奎. 基于等电流相位法的单相干式空心电抗器设计[J]. 电工技术学报, 2017, 32(10): 190-195. Ma Chao, Zhao Yanzhen, Ma Xikui.Design method based on layer current phase equality in single-phase dry-type air-core reactor[J]. Transactions of China Electrotechnical Society, 2017, 32(10): 190-195. [9] 姚远航. 干式空心电抗器匝间绝缘局部放电特性研究[D]. 哈尔滨: 哈尔滨理工大学, 2018. [10] IEC Std.60076-6-2007 Power Transformers-Part 6: Reactors[S]. Geneva: IEC, 2007. [11] GB/T1094.6-2011 电力变压器第6部分: 电抗器[S]. 北京: 中国国家标准化管理委员会, 2011. [12] 张良, 吕家圣, 王永红, 等. 35kV干式空心电抗器匝间绝缘现场试验[J]. 电机与控制学报, 2014, 18(6): 66-71. Zhang Liang, Lü Jiasheng, Wang Yonghong, et al.Field test on the turn-to-turn insulation for 35kV dry-type air-core reactors[J]. Electric Machines and Control, 2014, 18(6): 66-71. [13] 赵春明, 庞巍, 张雷, 等. 66kV干式空心并联电抗器故障分析[J]. 变压器, 2017, 54(12): 53-57. Zhao Chunming, Pang Wei, Zhang Lei, et al.Fault analysis of 66kV dry-type air-core shunt reactor in cold area[J]. Transformer, 2017, 54(12): 53-57. [14] 魏敏. 一起35kV空心电抗器故障原因分析及预防措施[J]. 电气技术, 2017, 18(3): 143-147. Wei Min.Failure analysis and preventive measures of the 35kV core reactor[J]. Electrical Engineering, 2017, 18(3): 143-147. [15] 金百荣, 李电, 蔡重凯, 等. 35kV并抗操作过电压故障实例分析[J]. 电力电容器与无功补偿, 2016, 37(5): 107-113. Jin Bairong, Li Dian, Cai Chongkai, et al.Fault analysis on switching overvoltage of 35kV shunt reactor[J]. Power Capacitor & Reactive Power Com- pensation, 2016, 37(5): 107-113. [16] 郑一鸣, 徐华, 金佳敏, 等. 断路器特性对切除35kV空母线并联电抗器操作过电压的抑制效果[J]. 电工技术学报, 2018, 33(22): 5282-5291. Zheng Yiming, Xu Hua, Jin Jiamin, et al.Suppression effects of circuit breaker characteristics on switching overvoltage of cutting shunt reactor on 35kV no-load busbar[J]. Transactions of China Electrotechnical Society, 2018, 33(22): 5282-5291. [17] 关永刚, 唐琦雯, 刘卫东, 等. 40.5kV真空断路器开断并联电抗器时过电压的产生机制[J]. 中国电机工程学报, 2012, 32(33): 124-133. Guan Yonggang, Tang Qiwen, Liu Weidong, et al.Overvoltage mechanism of switching off shunt reactors for 40.5kV vacuum circuit breakers[J]. Proceedings of the CSEE, 2012, 32(33): 124-133. [18] 李爽. 干式空心并联电抗器磁场与电动力研究[D]. 哈尔滨: 哈尔滨理工大学, 2015. [19] 姜志鹏, 周辉, 宋俊燕, 等. 干式空心电抗器温度场计算与试验分析[J]. 电工技术学报, 2017, 32(3): 218-224. Jiang Zhipeng, Zhou Hui, Song Junyan, et al.Tem- perature field calculation and experimental analysis of dry-type air-core reactor[J]. Transactions of China Electrotechnical Society, 2017, 32(3): 218-224. [20] Nie Hongyan, Liang Jiaqian, Wang Yonghong, et al.Research on pulse oscillating circuit of turn-to-turn over-voltage test for reactors[C]//IEEE International Conference on Electric Power Equipment, Matsue, Japan, 2013: 1-4. [21] Gao Ziwei, Zhu Xuecheng, Song Xiping, et al.Characteristics of PD for reactor inter-turn insulation under pulse oscillating voltage[C]//IEEE International Conference on the Properties and Applications of Dielectric Materials, Sydney, Australia, 2015: 728-731. [22] 倪学峰, 林浩, 吴义华. 干式空心并联电抗器表面放电的原因及解决措施[J]. 高电压技术, 1999, 25(3): 57-59. Ni Xuefeng, Lin Hao, Wu Yihua.Causes and reso- lution for surface discharge in dry-type reactors[J]. High Voltage Engineering, 1999, 25(3): 57-59. [23] 谭桂新, 张德顺, 郭香福, 等. 干式空心电抗器表面放电的机理和对策[J]. 中国电力, 1999, 32(11): 66-68. Tan Guixin, Zhang Deshun, Guo Xiangfu, et al.Mechanism and counter-measure against par tial discharge on dry-type air-core shunt reactors[J]. Electric Power, 1999, 32(11): 66-68. [24] 敖明. 户外干式空心电抗器表面树枝状放电试验研究[J]. 中国电力, 2000, 33(3): 39-41. Ao Ming.Test of tree discharge on surface of dry- type air-core reactors[J]. Electric Power, 2000, 33(3): 39-41. [25] 聂洪岩, 张潮海, 顾哲屹, 等. 局部放电条件下干式空心电抗器匝间绝缘的电老化特性研究[J]. 电工技术学报, 2018, 33(13): 3071-3079. Nie Hongyan, Zhang Chaohai, Gu Zheyi, et al.The Research on electrical aging characteristics of turn- to-turn insulation of dry-type air core reactor under partial cischarge[J]. Transactions of China Electro- technical Society, 2018, 33(13): 3071-3079. [26] 聂洪岩, 张潮海, 姚远航, 等. 投切过电压累积作用下干式空心电抗器匝间绝缘局部放电特性[J]. 电机与控制学报, 2018, 22(9): 15-23. Nie Hongyan, Zhang Chaohai, Yao Yuanhang, et al.Partial discharge characteristics of interturn insulation of dry-type air core reactor under the accumulative effect of switching overvoltage[J]. Electric Machines and Control, 2018, 22(9): 15-23. [27] 穆海宝, 有晓宇, 董勤晓, 等. 35kV干式空心电抗器匝间绝缘热-机械联合损伤分析[J]. 西安工程大学学报, 2017, 31(2): 271-277. Mu Haibao, You Xiaoyu, Dong Qinxiao, et al.Thermal-mechanical combined damage analysis of 35kV dry-type air-core reactor inter-turn insulation[J]. Journal of Xi’an Polytechnic University, 2017, 31(2): 271-277. [28] 屠幼萍, 孙伟忠, 岳彩鹏, 等. 固体绝缘材料热老化电气特性的研究[J]. 电工技术学报, 2013, 28(1): 7-13. Tu Youping, Sun Weizhong, Yue Caipeng, et al.Research on thermal aging electrical properties of polymer materials[J]. Transactions of China Electro- technical Society, 2013, 28(1): 7-13. [29] 彭庆军, 姜雄伟, 司马文霞, 等. 35kV干式空芯并联电抗器匝间绝缘综合故障分析[J]. 高电压技术, 2018, 44(6): 2005-2011. Peng Qingjun, Jiang Xiongwei, Sima Wenxia, et al.Comprehensive analysis of turn-insulating fault of 35kV dry-type air-core reactors[J]. High Voltage Engineering, 2018, 44(6): 2005-2011. [30] Nie Hongyan, Liu Xiaosheng, Wang Yonghong, et al.Breaking overvoltage of dry-type air-core shunt reactors and its cumulative effect on the interturn insulation[J]. IEEE Access, 2019, 7: 55707-55720. [31] 杨飞. 66kV干式空心并联电抗器切断过电压及其保护[D]. 哈尔滨: 哈尔滨理工大学, 2015. [32] 邱昌荣, 曹晓珑. 电气绝缘测试技术[M]. 北京: 机械工业出版社, 2001.
2020, Vol. 35 
