Study of the Current Transformer Temperature Rise for Distribution Board

• Main Authors: Yuan-Fu Chang, 張源富
• Other Authors: Sy-Ruen Huang
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/58491649189254115547

碩士 === 逢甲大學 === 資訊電機工程碩士在職專班 === 94 === Current is need to change from high current to low current by current transformer(CT) in Power system, that meter can examine and relay can detect directly. When the power system is normal the iron-core of CT magnetism saturation phenomenon is unlikely. When faults occur on the power system. However, CT may saturation due to the malfunctions of power systems because of the property of iron-core of CT is non-linearity once CT had saturated, the exciting current of CT would be huge and the secondary current would be distorting. The thesis draft finite element method to analyze. First reality locale measure results in base. Furthermore, unidentical seat of CT in distribution board compare and analyze electric field, magnetic field and temperature distributions within the device to understand relative relation of electric field, magnetic field and temperature to confirm the cause of iron-core of CT magnetism saturation.