某光伏行业多晶硅还原炉变压器烧毁实例分析  

Analysis of a PV industry polysilicon reduction furnace transformer burned instance

作　　者：芶大斌[1] 严曜晖[1] 

机构地区：[1]昆明冶研新材料股份有限公司,云南曲靖655000

出　　处：《机电工程》2013年第4期497-500,共4页Journal of Mechanical & Electrical Engineering

摘　　要：针对多晶硅还原炉变压器三相运行时的不平衡能力问题和调功柜电源工作时,调整线圈抽头会产生高次谐波等引起变压器线圈局部过热的绝缘问题,采用了低压侧最大档到最小档抽头电流线圈,按照"由外向内顺序靠近铁芯排列"布局,同时将各相高压线圈做成上下部两个线圈、中间分开应用制造技术;通过对还原炉变压器A相高压侧线圈和三相低压侧线圈层间短路故障数据的研究,分析了还原炉变压器绕组结构的合理布局与线圈绝缘能力好坏的关系,提出了改善绕组排列和铁芯结构工艺、增加外部风扇散热等方法;在制造工艺及运行条件上,针对还原炉变压器与调功柜配合所产生的高次谐波量进行了专门设计。最后,通过现场改善变压器运行环境及工艺结构等技术措施进行了试验,结果表明,变压器的抗谐波及不平衡能力得到增强,后期未再出现短路烧毁事故。Aiming at solving the polysilicon reducing furnace transformer operation when the balance ability and power regulating cabinet power supply work adjustment coil tap will generate harmonics caused by local overheat problem of transformer coil insulation, a low voltage maximum to minimum current tapped coil, in accordance with the ＂outside-in sequence near the core arrangement＂ layout, and the high-voltage coil into two upper and lower coils, the middle application of manufacturing technology was used. According to reduce furnace transformer A phase high confining ring and low confining spheres of the three-phase short-circuit fault data analysis, the relationship between the reducing furnace transformer winding structure reasonable layout and whether the coil insulation ability is good or bad was analysed, improving winding arrangement and core structure process was proposed. The method of increasing the external fan cooling, consideration on reduction furnace transformer on manufacturing process and operation conditions and the adjustment work are producing the high order harmonic are content special designs, and throughimproving running environment and process structure and other technical measures tests. The results indicate that the capacity of the resistance of harmonics and unbalancedness of the reducing furnace transformer is enhanced, short-circuit burned accident does not occur again.

关 键 词：光伏行业 多晶硅 还原炉变压器 调功柜 绕组结构 高次谐波 烧毁事故 

分 类 号：TM407[电气工程—电器]