闫云强
YAN Yunqiang

• 1:国电电力内蒙古新能源开发有限公司

摘要(Abstract)：

在对某2 MW风电机组故障处理过程中发现发电机转子几字形导电排熔断，针对该故障，从导电排的结构设计、制造工艺、材质性能等方面进行系统性检查分析，确定导电排在制作过程中，产生工艺性损伤后其机械性能大大降低，长期运行后，在离心力和热应力的作用下，损伤处疲劳，最终导致导电排熔断。对此从工艺、结构等方面改进，对导电排进行修复，有效解决了该发电机转子几字形导电排熔断的问题。
During the troubleshooting of a 2 MW wind turbine generator, it is found that the zigzag conducting bar of generator rotor is fused. According to the fault, the structural design, manufacturing process and material properties of the conducting bar are systematically examined and analyzed. It is determined that the mechanical properties of the conducting bar are greatly reduced after the technical damage occurred during the manufacturing process. After long-term operation,under the action of centrifugal force and thermal stress, the damaged part is fatigued, and finally the conducting bar is fused. Therefore, the design process, design structure and other aspects are improved, and the conducting bar is repaired,which solves the fusing fault of the generator's zigzag conducting bar, and ensures the unit's safe and stable operation.

关键词(KeyWords)： 风力发电机;导电排;有限元分析;应力分布;压痕
wind turbine generator;conducting bar;finite element analysis;stress distribution;indentation

Abstract:

Keywords:

基金项目(Foundation): 国电电力内蒙古新能源开发有限公司科技项目“一种风电机组发电机转子几字形导电排结构研究”（2022-ZL-03）

作者(Author): 闫云强
YAN Yunqiang

参考文献(References)：

• [1]黄振民，王淑红，白崟儒，等.基于有限元的无刷双馈电机发电运行状态的仿真[J].微电机，2017,7(50):7-12,29.HUANG Zhenmin, WANG Shuhong, BAI Yinru, et al.Simulation Research on Generation State of Brushless Doubly Fed Machine Based on Finite Element Method[J]. Micromotors. 2017, 7(50):7-12, 29.
• [2]路军锋，王洪，姜玉山，等.150 MW机组发电机转子振动故障分析及处理[J].东北电力技术，2018,39(5):60-62.LU Junfeng, WANG Hong, JIANG Yushan, et al. Analysis and Treatment of 150 MW Unit Generator Rotor Vibration Fault[J]. Northeast Electric Power Technology,2018, 39(5):60-62.
• [3]杨晓光，许仪勋.双馈风力发电机故障诊断方法研究[J].电测与仪表，2018,55(2):52-58.YANG Xiaoguang, XU Yixun. Research on fault diagnosis method of doubly fed wind power generator[J]. Electrical Measurement&Instrumentatio, 2018, 55(2):52-58.
• [4]李晓飞，张羽，李秀杰.某电站发电机转子引线烧损原因分析及处理[J].水电与新能源，2020,34(8):58-61.LI Xiaofei, ZHANG Yu, LI Xiujie. Analysis and Treatment of a Rotor Lead Burning Accident in a Hydropower Station[J]. Hydropower And New Energy, 2020, 34(8):58-61.
• [5]张生德，汪双灿，赵超.电机绝缘系统在高频冲击下局部放电试验研究[J].电机与控制应用，2018,45(2):102-105.ZHANG Shengde, WANG Shuangcan, ZHAO Chao.Study on the Test of Partial Discharge Under High Frequency Impulse Voltage for Motor Insulation System[J].Electric Machines&Control Application, 2018, 45(2):102-105.
• [6]任志波.兆瓦级变速发电机组引出线断裂故障无接触式检测研究[J].自动化与仪器仪表，2020(11):182-185.REN Zhibo. Study on non-contact detection of outline fault in MW variable speed generator[J]. Automation&Instrumentation, 2020(11):182-185.
• [7]黄毅，彭可，王文潮，等.大功率高压开关电源变压器的损耗分析及散热控制[J].中南大学学报（自然科学版），2019,50(5):1089-1097.HUANG Yi, PENG Ke, WANG Wenchao, et al. Loss analysis and thermal control of power transformers with high power and high voltage[J]. Journal of Central South University(Science and Technology), 2019, 50(5):1089-1097.
• [8]吴育涛.发电机转子直流电阻异常的分析及处理[J].电力安全技术，2021(3):35-37.WU Yutao. Analysis and Treatment of DC Resistance Abnormalities in A Generator Rotor[J]. Electric Safety Technology, 2021(3):35-37.
• [9]李龙，魏文，李苗叶，等.一起发电机转子故障分析和处理[J].电工技术，2020(8):61-62,65.LI Long, WEI Wen, LI Miaoye, et al. Analysis and Treatment of a Generator Rotor Failure[J]. Electric Engineering, 2020(8):61-62,65.
• [10]刘军伟，崔明，卢江跃，等.风力发电机绝缘失效原因及改进措施[J].机电工程技术，2020,49(8):281-283.LIU Junwei, CUI Ming, LU Jiangyue, et al. Failure Analysis and Improvement for Insulation System of Wind Turbine Generator[J]. Mechanical&Electrical Engineering Technology, 2020, 49(8):281-283.
• [11]黄震炜，楼科利，李建桥.风力发电机组延寿评估方法[J].质量与认证，2022(9):67-69.HUANG Zhenwei, LOU Keli, LI Jianqiao. Assessment method for life extension of wind turbine[J]. China Quality Certification, 2022(9):67-69.