In order to study the effects of the much larger stator and rotor resistance (in per unit, compared to the normal one) on the transient time constant in the model synchronous generators, this paper deduce the improved analytical expression of exciting current under no-load and three-phases' short circuit situation, with the resistance of stator and rotor considered. The comparison of the results from improved analytical solution and field test as well as the calculation results of PARK equations and traditional analytical solution shows the correctness and validity of this model. The results reveal that Td' of the synchronous generator start with a small decrease and then increase gradually as the stator resistance increased, and Ta of the synchronous generator start with a small decrease and then increase gradually as the rotor resistance increased.
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机译:为了研究更大的定子和转子电阻的效果(每单位,与正常值相比)在模型同步发电机中的瞬态时间常数上,这篇论文推导出无负载下励磁电流的改进的分析表达和三相的短路情况,具有定子和转子的电阻考虑。从改进的分析解决方案和现场测试的结果的比较以及公园方程和传统分析解决方案的计算结果显示了该模型的正确性和有效性。结果表明,同步发电机的T D INF>'从小减小开始,然后随着定子电阻的增加逐渐增加,而同步发电机的T A INF>以a启动随着转子阻力的增加,逐渐增加,然后逐渐增加。
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