【摘要】 根据现有等值方法,提出了一种改进的、适合舰船电力系统特点的在线动态等值方法。该等值方法在对发电单元进行聚合时,发电机、励磁系统、调速器都保留原有模型结构。根据舰船电力系统特点,发电机采用考虑次暂态的六阶模型,给出了基于六阶发电机模型的参数计算公式和聚合的一般步骤。在计算等值模型的参数时,采用了时域的非迭代代数运算,减少了运算时间。在对某一实际包含12台发电机的舰船电力系统进行建模等值时,应用该方法,给出了等值参数及在PSCAD/EMTDC仿真环境中的动态响应曲线。验证了该等值聚合方法的有效性。更多还原

【Abstract】 An improved time-domain online dynamic equivalent method is presented, which is suitable to shipboard power system. It preserves the structure of the generator, excitation system and governor system. Sixth-order generator equation is used to reduce the grid considering the subtransient.Formulas and the aggregation steps are come out. The time-domain non-iterative algebraic operations process is used to calculate equivalent parameters. For verifying the effect of this aggregation method, the method is applied to reduce a twelve generators shipboard power system. The equivalent parameters and the dynamic response curves are presented in PSCAD/EMTDC simulation environment.And the simulation curves show that the equivalent system retains the dynamic performance of the original system with good accuracy.更多还原