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文章叙述了新开发的水轮发电机定子绕组内部故障电量计算与保护方案分析系统，该系统能方便地对任意尺寸、槽数、极对数、绕组形式以及不同中性点连接方式的大型水轮发电机进行各种内部故障（如匝间短路、支路间短路、开焊故障等）进行稳态电量的计算，同时能对内部故障保护方案如单元件横差、不完全差动、裂相横差等保护的灵敏度进行分析校核，并能给出保护方案的最佳ＣＴ组合。该系统可广泛应用于大型水轮发电机定子绕组内部故障分析与保护方案研究等场合。
This paper describes a newly developed hydraulic turbine stator winding internal fault power calculation and protection scheme analysis system, the system can easily any size, slot number, pole pairs, the winding form and the connection of different neutral point large water The generator is used to calculate the steady-state power of various internal faults (such as turn-to-turn short circuit, short circuit between branches, open welding fault, etc.), and can also analyze the internal fault protection schemes such as single element transverse differential, incomplete differential, Phase transverse differential protection sensitivity analysis checks, and can give the best combination of CT protection programs. The system can be widely used in large-scale hydroelectric generator stator winding fault analysis and protection program research and other occasions.