大型同步发电机参数在线辨识系统校验与分析

Experimental verification and analysis for identified parameters of large synchronous generators

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。

Full scale system tests in Tongliao power network of northeast area were conducted for verifying the accuracy of the identified parameters of large synchronous generators and evaluating the effectiveness of the generator model containing the parameters on the stability analysis of power system. The plant experiences indicate that by adopting the identified parameters, the stability margin of the generator can be improved up to 5%, resulting in 30￣50MVA more power generation.