凸极同步发电机定子绕组内部故障的瞬态计算及有关保护方案的分析

Transient Calculation of Internal Faults in the Salient-Pole Synchronous Machine and Research on Their Main Equipment Protection Schemes

运用多回路分析方法，建立了凸极同步发电机定子绕组内部故障的数学模型，并编制了仿真程序，可以对凸极同步发电机定子绕组内部故障的瞬态和稳态过程进行仿真；通过对仿真结果与实验结果的比较，验证了数学模型的正确性。依据仿真结果，计算了不同内部故障下各种保护方案的灵敏度，说明用瞬态基波分量校验的保护灵敏度比用稳态基波分量校验的灵敏度提高了。

Based on the Multi loop Method, a mathematical model for the salient pole synchronous machine is established. The transient and ste ady state behavior of the machine with internal faults is simulated through the model, and it is consistent with the experiments’ result. This verifies the mo del and the simulation program. According to the simulated results, the sensitiv ities of different protection schemes are calculated under internal faults. It i s found that the transient sensitivity is higher than the steady state sensitiv ity.