125MW发电机增容后的运行参数分析

Analysis on Operation Parameters of the 125MW Generator after Capability Retrofit

论述了发电机在不同运行工况下定子、转子之间的空间相对位置,描述了同步电机电、磁关系及其相互影响。在此基础上介绍了发电机增大有功负荷对变压器所造成的不良后果。给出了发电机几个典型的工况的定量分析,围绕定量分析绘出表格和曲线,较直观的反映出发电机的内部参数变化趋势。发电机在某一工况时其主要参数已达临界状态,变压器在这一工况下已经过负荷。数据分析清楚地表述了发电机各参数间的相互关系,以及改变某一参数其它参数的变化趋势等。

This paper describes the relative spatial positions of the generator stator and rotor in different operation conditions. It also describes the relations and influences between the electric and magnetic characters of synchronous machine. Increased generator capability can influence the transformer＇s running states badly. The generator＇s running parameters are calculated in some special running states, and displayed changing trends by tables and lines visually. In some critical running states, the generator＇s main running parameters reach their limit values, and the transformer is over load. The data also present the interrelations of the running parameters. If one of the parameters changed, the other parameter＇s changing trends would he seen.