摘要
在对励磁系统局部故障进行分析的基础上,提出了异步化汽轮发电机在励磁系统局部故障下的双通道励磁控制模型及其控制策略,利用Saber仿真软件建立了异步化汽轮发电机系统模型(包含可逆可控硅组成的励磁装置模型)。仿真研究了励磁装置工作整流器突然故障,另一组整流器投入后的过渡过程,以及励磁局部故障时有功、无功独立调节的过程。仿真结果表明,异步化汽轮发电机在工作整流器突然故障,另一组整流器投入后,能够恢复到原始运行状态,过渡过程稳定;励磁局部故障时仍然具备良好的有功、无功独立调节性能。
This paper emphasizes the control strategy of an asynchronized turbogenerator (ASTG) with partial faults in the excitation system and the establishment of system simulation model for ASTG including the model of the reverse thyristors on the each excitation circuit in the excitation system by Saber software. Based on the analysis of ASTG with partial faults in the excitation system, the dual-passage excitation control model is presented in this paper. Simulation results of the dynamical process when the working thyristors on any excitation circuits were damaged suddenly and of the regulative process of the active power and the reactive power in terms of the requirement of power system were carried out during the steady state operation for ASTG These simulation results shown that ASTG can return to the original steady state operation when the any working thyristors were damaged suddenly and this dynamical process is stable, as well as the regulative performances of the active power and reactive power for ASTG with partial faults in the excitation system appear in good.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2004年第5期137-140,共4页
Proceedings of the CSEE
