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| 大型水轮发电机内部故障单元件横差保护的灵敏度分析 | |
| 引用本文： | 屠黎明,胡敏强,吴济安. 大型水轮发电机内部故障单元件横差保护的灵敏度分析[J]. 中国电机工程学报, 1999, 19(11): 32-36,75 |
| 作者姓名： | 屠黎明 胡敏强 吴济安 |
| 作者单位： | 1. 东南大学电气工程系 2. 南京电力自动化设备总厂 |
| 基金项目： | 国家教育委员会博士点基金资助 |
| 摘 要： | 建立了求解多分支水轮发电机定子绕组内部故障情况下的稳态电气量的通用数学模型。以ＳＦ１２５－９６／１５６００水轮发电机为例，全面探讨了匝间短路，支路间短路时匝经，邦联位置，过渡电阻等对单元件横差保护方案灵敏度的影响规律，并分析了匝间短路保护死区。 |
| 关 键 词： | 水轮发电机 故障 横差保护 灵敏度 单元件 |
SENSITIVITY ANALYSIS OF THE SINGLE-ELEMENT TRANSVERSE DIFFERENTIAL PROTECTION FOR LARGE-SIZED HYDRO-GENERATOR WITH INTERNAL ARMATURE WINDING FAULTS |
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| Tu Liming,Hu Minqiang,Wu ji'an. SENSITIVITY ANALYSIS OF THE SINGLE-ELEMENT TRANSVERSE DIFFERENTIAL PROTECTION FOR LARGE-SIZED HYDRO-GENERATOR WITH INTERNAL ARMATURE WINDING FAULTS[J]. Proceedings of the CSEE, 1999, 19(11): 32-36,75 | |
| Authors: | Tu Liming Hu Minqiang Wu ji'an |
| Abstract: | The generally mathematical model for calculating the steady state currents of the multi branch hydro generator with the internal armature winding faults is established in this paper. The effect laws of the turns ratio, the fault position and the electric arc resistance on the sensitivity of the single element transverse differential protection scheme are investigated in the case of the turn to turn and the branch to branch faults of hydro generator SF125 96/15600. And the dead zone of the interturn fault protection is analyzed. |
| Keywords: | hydro generator internal faults transverse differential protection sensitivity |
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