华北电网大容量发电机励磁系统建模与参数辨识测试

调查了华北电网100MW及以上发电机及其励磁系统的类型和制造厂家，确定选择具有典型励磁系统特性的直接接入500 kV系统的大容量发电机组开展发电机励磁系统参数测试辨识试验，经过现场测试、励磁系统参数初值拟合、电磁暂态校核以及系统暂态稳定校核，得到了满足生产实际需要的发电机励磁系统模型参数。自2004年7月华北电网开始采用现场测试得到的发电机励磁系统详细模型参数，进行年度方式、中期规划稳定计算，指导实际生产。

Modeling and Parameter Testing and Recognition for Excitation Systems of High-Capacity Generators in North China Power Grid

According to practical conditions and based on the detailed investigation of high-capacity generators installed in North China Power Grid, whose capacities are higher than 100MW, and their excitation systems as well as the manufacturers of them, it is determined that the high-capacity generating units, which are of typical characteristics of excitation system and directly connected into 500kV power grid, are chosen to conduct the parameter test and recognition of generator excitation system. By means of on-site testing, the fitting of initial value of excitation system, verification of electromagnetic transient and system transient stability, the model parameters of generator excitation system that can satisfy actual requirement of production are finally obtained. From July, 2004 on, the on-site testing based detailed model parameters of generator excitation system are applied in annual operation modes, dynamic stability calculation of mid- and long-term. planning of North China Power Grid.