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作 者:李术林 夏静[1,2] 胡道雄 胡葆福 刘振清 LI Shuin;XIA Jing;HU Daoxiong;HU Baofu;LIU Zhenqing(Xinjiang Goldwind Science&Technology Co.,Ltd.,Urumqi 830026,China;Beijing Goldwind Science&Technology Windpower Equipment Co.,Ltd.,Beijing 100176,China;Zhejiang Bofay Electric Co.,Ltd.,Jiaxing 314100,China)
机构地区:[1]新疆金风科技股份有限公司,乌鲁木齐830026 [2]北京金风科创风电设备有限公司,北京100176 [3]浙江博菲电气股份有限公司,浙江嘉兴314100
出 处:《大电机技术》2024年第4期69-80,共12页Large Electric Machine and Hydraulic Turbine
基 金:科技部专项“大功率新型陆上风电机组技术攻关及应用示范”(2021YFB1506900)。
摘 要:传统的风力发电机绝缘系统在真空压力浸渍工序中,会产生较多的挥发物排放,极大地污染了环境,亟需开发一款生产过程中低挥发份的绝缘系统,在满足风电高可靠性要求的前提下,解决空气污染问题。本文通过对风力发电机组全运行工况和设计边界的分析,对应力因子进行了全范围筛选和调研。从TEAM四种类型的应力中确定了关键影响因子和劣化参数水平,其中应力关键影响因子是热机械应力和潮湿应力。然后,构思与设计了模拟试验规程,将新开发的绝缘系统与已经运行超过10年的基准绝缘系统进行平行对照试验,将对照结果作为横向判定依据,同时设定最低绝对值指标作为纵向性能标准。在低挥发绝缘系统的局部模型经历了12周期冷热冲击及浸水试验后,对其电气性能和工艺匹配性进行评估,得出该绝缘系统可耐受热机械应力和潮湿应力的结论,且发现在该应力和热态环境下的电气绝缘性能等同甚至优于基准绝缘结构。In the VPI process,the traditional wind turbine insulation system will produce more volatile emissions,which greatly pollutes the environment.It is urgent to develop a low volatile insulation system in the production process to solve the air pollution problem on the premise of meeting the high reliability requirements of wind power.Through the analysis of the full operating conditions and design boundary of the wind turbine generator unit,the stress factors have been screened and investigated in a full range.The key influence factors and deterioration parameter levels have been determined from the four types of stress of TEAM,and the key influence stress factors are thermal mechanical stress and moisture stress.Then the simulation test procedure has been conceived and designed.Conduct parallel comparison test has been carried out between the newly developed insulation system and the benchmark insulation system that has been in operation for more than 10 years.The comparison results are used as the basis for horizontal judgment,and the lowest absolute value index is set as the longitudinal performance standard.After the local model of the low volatile insulation system has undergone 12 cycles of cold and hot shock and immersion tests,its electrical performance and process matching are evaluated.It is concluded that the insulation system can withstand thermal mechanical stress and wet stress,and the electrical insulation performance under this stress and thermal environment is equivalent to or even better than that of the reference insulation structure.
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