同步发电机阻尼转矩系数的研究

同步发电机在微于扰下的行为,常用梅格和康柯蒂亚提出的数学模型进行研究,但该模型忽略了阻尼绕组的影响,工程土常在该模型的基础上附加一阻尼环节来估计这一影响。为此,本文推导了用于这修正后的模型中的阻尼转短系数的计算公式,该公式计及了发电机的阻尼参数,输电线阻抗和发电机的运行工况。经仿真计算,证实了该公式的正确性,使阻尼转矩系数的计算有一客观依据。

Study of Damping Torque Coefficient of Synchronous Generators

The performance of synchronous generators under small perturbation is often investigated With the mathematical representation developed by F.P. Demello and C.Concordia.However,the effect of damping windings is not considered in that model,therefore,a damping element is added to the model in order to estimate the effects in engineering practice.In this paper a formula of the damping torque coefficient used on the element is derived to improve the representation simulation shows that the present formula is correct.