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| A method of AC withstand voltage test for large turbo-generator |
| HOU Zhongfeng, LIU Zhan, REN Min, LÜ Shanglin, WANG Jiaju |
| Xi’an Thermal Power Research Institute Co., Ltd, Xi’an 710054 |
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Abstract AC withstand voltage test is a must-do test for a large turbo-generator during manufacture, installation, hand-over, maintenance and preventive test. From the main insulation or thermal break-through aspects, the test voltage waveform type and frequency should be consistent with the generator’s corresponding operating parameters. Due to this reason, a method suitable for the large turbo-generator AC withstand voltage test is designed, which effectively reduces the volume of the traditional series resonance equipment, and also avoids the frequency offset and harmonic influence of the variable frequency resonance method, thus greatly improving the efficiency of the large turbo-generator AC withstand voltage test.
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Received: 10 November 2020
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[1] 李建明, 朱康. 高压电气设备试验方法[M]. 北京: 中国电力出版社, 2001.
[2] 陈天翔. 电气试验[M]. 北京: 中国电力出版社, 2016.
[3] 李德存, 马捍超, 刘磊, 等. 1100MW水内冷汽轮发电机定子绕组耐压试验分析[J]. 电气技术, 2014, 15(4): 66-68, 72.
[4] 肖发福, 黄明浩. 串联谐振调感法在大容量发电机交流耐压试验中的应用研究[J]. 电工技术, 2019(12): 50-52.
[5] 雷江逵. 对发电机定子耐压试验的再认识[J]. 高压电器, 2002(3): 55-56, 58.
[6] 温定筠, 张秀斌, 孙亚明, 等. GIS交流耐压试验原理与装置[J]. 电气技术, 2014, 15(10): 108-109, 113.
[7] 刘海龙, 万亦农, 周多思. 多约束条件下110kV长电缆交流耐压试验研究[J]. 电气技术, 2016, 17(10): 74-76, 84.
[8] 旋转电机定额和性能: GB/T 755—2019[S] GB/T 755—2019[S]. 北京: 中国标准出版社, 2019.
[9] 三相同步电机试验方法: GB/T 1029—2005[S] GB/T 1029—2005[S]. 北京: 中国标准出版社, 2005.
[10] 现场绝缘试验实施导则交流耐压试验: DL/T 474 DL/T 474.4—2006[S]. 北京: 中国电力出版社, 2006.
[11] 旋转电机预防性试验规程: DL/T 1768—2017[S] DL/T 1768—2017[S]. 北京: 中国电力出版社, 2017. |
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2021, Vol. 22 
