为了评估参数辨识的准确性和由实测参数构成的数学模型对电力系统暂稳态计算的影响，针对已提出的动态在线辨识方法和得到的辨识参数结果，在东北通辽地区电网上进行了大规模系统校核试验和系统稳定计算分析。校核和分析结果表明：所得到的同步电机模型和参数符合实际系统，采用实测模型参数（包括励磁系统和调速系统）后，通辽电厂的发电机稳定极限可以提高５％左右。 In order to evaluate the accuracy of parameter identification and the mathematical model composed of measured parameters on the transient stability of power system, aiming at the proposed dynamic on-line identification method and the obtained identification parameters, a large scale System verification test and system stability calculation and analysis. The results of checking and analysis show that the obtained synchronous motor model and parameters are in accordance with the actual system. After using the measured model parameters (including excitation system and speed governing system), the stability limit of generators in Tongliao Power Plant can be increased by about 5%.