变电所主变低压侧穿墙套管新型底板的研制  

Development of New Floor of Substation Transformer Low Voltage Side Wall Bushing

作　　者：周刚 车江嵘 徐伟 胡海平 王森 

机构地区：[1]国网浙江省电力公司嘉兴供电公司,浙江嘉兴314000

出　　处：《电气开关》2017年第6期43-46,52,共5页Electric Switchgear

基　　金：国家实用新型专利(专利号:zl:201420665946.5);国网浙江省电力公司群众性科技创新项目(项目号:5211JX14004R00K24)

摘　　要：随着我国经济社会高速发展,社会用电量逐年上升,变电所主变出力也随着用电量的上升而增加,使得主变低压侧电流不断增大。进而使得主变低压侧穿墙套管固定底板因电磁感应产生的涡流大大增加而产生发热的情况,温度甚至高达150摄氏度,严重限制了主变的实际供电负荷,影响到了电网安全与主变出力,危及电网设备和人员安全,并且造成了能源浪费。本文通过研制新型的低磁钢板,将原先相对导磁率3000~5000的铁质底板更换为相对导磁率1左右的低磁钢板,消除了涡流,使得底板温度降至了环境温度。With the rapid economic and social development, social consumption increased year by year, along with the output of the main transformer in transformer substation with rising consumption increases, making the main transformer low side current is increasing. Therefore, Eddy current in the floor of main transformer low voltage side wall bushing generated due to electromagnetic induction to generate heat greatly increased ,temperatures as high as 150 degrees Celsius, which severely limits the actual power load of the main transformer,affecting the output of the main transformer and grid security, endangering grid equipment and personnel safety, and caused a waste of energy. Through the development of new low - magnetic steel, the original iron plate of relative permeability of 5000 to replace the low permeability magnetic steel sheet of relative permeability of about one, eliminating the vortex, so that the bottom temperature was lowered to ambient temperature.

关 键 词：穿墙套管底板 电磁感应 温度 

分 类 号：TM205[一般工业技术—材料科学与工程]