摘要
为研究分析电网瞬时故障时快关系统的动作过程及作用效果,以某600 MW汽轮发电机为研究对象,分析机组快关控制系统逻辑,建立包含快关控制系统和励磁控制系统的源网联合仿真控制模型。选取不同的电网瞬时故障类型及故障发生点,对发生故障时汽轮机调门快关系统进行仿真,研究电网瞬时故障下汽轮机调门快关的作用效果。仿真结果表明,相同故障发生点,全相故障较非全相故障更加严重;相同故障类型,故障发生点距离同步发电机越近,故障越严重。汽轮机调门快关在抑制汽轮机转速飞升和维持电力系统暂态稳定性方面有显著的作用效果。
In order to study and analyze the operation process and effect of the fast valving system under the transient fault in the power system, a 600MW turbo-generator is used as the research object. A turbine and power grid coupled excitation system and fast valving system is presented based on the logic analysis of the unit fast valving system in detail. The effects of fast valving control in different grid faults are simulated from different fault distance and failure. The simulation results show that the full phase fault is more serious than the non-full phase fault in the same place where the failure occurred and the more serious fault is the closer one from the synchronous generator with the same type of failure. The simulation results also demonstrate the fast valving action of the grid faults can help the generator reestablish the synchronization and maintain the stable operation of the power grid system.
作者
王锁斌
邓彤天
钟晶亮
王家胜
韩炜
WANG Suo-bin, DENG Tong-tian, ZHONG Jing-liang, et al.
出处
《电站系统工程》
2018年第2期45-48,共4页
Power System Engineering
关键词
超临界机组
调门快关
建模仿真
瞬时故障
暂态稳定
supercritical unit
fast valving
modeling and simulation
instantaneous failure
transient stability
