Guide for testing turn - to - turn insulation on form - wound stator coils for alternating - current rotating electric machines 交流旋轉電機用模繞定子線圈的匝間絕緣試驗指南
Because the fault of field windings turn - to - turn shorted do not cause much effect of the operation of the machine or its fault characteristics are not very clear , most of the faults are neglected 轉子匝間短路故障對機組正常運行影響不大或故障特征不明顯,因此許多匝間短路故障被忽略了,但長期運行匝間短路故障會導致轉子線圈一點甚至兩點接地。
Finally , it is pointed that the turn - to - turn protection with integrated circuit of geheyan power plant should be replaced by microcomputer type one ; and the turn - to - turn protection with microcomputer for the gaobazhou power plant should be optimized 最后指出,應采用微機型匝間保護取代隔河巖水電廠集成電路型匝間保護;對高壩洲水電廠微機型匝間保護應進行優化處理。
Taking the geheyan and gaobazhou hydropower plants for examples , the problem of turn - to - turn protection of generators is discussed and analyzed by combining with the implementation scheme of principle , actual operation situation and situation of dynamic model test 摘要以隔河巖水電廠和高壩洲水電廠為例,結合原理實現方式、實際運行情況、動模試驗情況,對發電機匝間保護進行了較為深入的分析探討。
During its operation , the rotor of the machine is always under the great suppression of centrifugal force . the surface of rotor is the most important part to enduring the forces and thermal energy . so the windings of rotor are in a common problem of happening one - point to earth short fault , two - point to earth short fault , or turn - to - turn short fault 汽輪發電機是一種高速隱極式同步電機,在其運行時,轉子受到強大的離心力的作用,而轉子表面是承受機械應力和發熱的最關鍵的部件,因此汽輪發電機轉子繞組容易發生一點接地、匝間短路和兩點接地短路故障。
The analytical results show : the turn - to - turn protection with integrated circuit for geheyan hydropower plant can not wholly avoid misoperation in the system ' s oscillation process in accordance with its principle ; for the turn - to - turn protection with microcomputer of the gaobazhou hydropower plant , there also exists some problem in accordance with dynamic model test and theoretical analysis 通過分析指出,對于隔河巖水電廠的積體電路型匝間保護,在系統振蕩過程中該保護裝置在原理實現上就不能避免誤動發生;對于高壩洲水電廠的微機型匝間保護,通過動模試驗和理論分析,同樣發現其存在一定問題,不能完全滿足現場要求。