摘要
根据贵阳电网实际系统,用NETOMAC程序建立了原动机、调速器、汽轮发电机过速保护和南方电网负荷的详细模型,采用实际系统能提供的参数,缺省参数则通过参照典型数据和现场试验获得,并以贵阳南部电网"7.7"事故仿真研究成果为基础,从高频切机的角度进一步仿真研究当贵州电网与南方电网彻底解列成为孤网运行时贵州电网动态频率异常、频率不稳定性及其控制措施,得出电网一次调频速率合理的限速设置是快速恢复频率稳定的决定性因素的结论。
The simulation is conducted by using NETOMAC based on the detailed models of the real prime mover, governor, OPC and load of the China Southern Power Grid. The parameters are the real network data, testing data of the field measurements, or supplementary data of classical values. Based on the conclusion of Guiyang South Grid ＂7 ·7＂ faults simulation and analysis, the abnormal dynamic frequency, frequency instability, and control measures of Guizhou isolated power system are studied. The study is conducted from the view of over frequency generator tripping when Guizhou Power System is separated from China Southern Power Grid. It is concluded that the proper speed limit setting of primary frequency regulation is the decisive factor of frequency recovery.
出处
《现代电力》
2008年第4期31-34,共4页
Modern Electric Power
关键词
调速器
一次调频
高频切机
孤网
频率稳定
governor
primary frequency regulation
over frequency generator tripping
isolated grid
frequency stability
