摘要
针对2006年7月7日贵阳南部电网事故,根据实际系统,用NETOMAC程序建立了原动机、调速器和汽轮发电机过速保护的详细模型,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。在此基础上,对故障进行了仿真反演和研究,仿真结果较为成功地模拟出了整个故障过程。并就此进行了进一步的研究性仿真,发现并论证了孤网故障高频的主要原因是对机组一次调频速率不合理的限速设置,提出了抑制高频稳定系统的措施。文中研究说明了目前电网存在频率稳定的安全隐患,大电网孤网高频稳定问题亟待深入研究。
The detailed simulation is presented to repeat the incident on the 7th July, 2006 in the Guiyang South Grid. The simulation is conducted by using NETOMAC based on the real network data, testing data of the field measurements, and supplement data of classical values, models of the real prime mover, governor, OPC and load of the China Southern Power Grid. Through further investigation, it shows that the improper limit setting of primary frequency regulation is the main cause of high frequency in the isolated sub-grid and proposes methods to damp the frequency fluctuation. Some issues of the frequency security problems of the grids at present are discussed, and it is pointed out that the frequency stability should be researched as soon as possible.
出处
《电力系统自动化》
EI
CSCD
北大核心
2007年第9期95-100,共6页
Automation of Electric Power Systems
基金
国家重点基础研究发展计划(973计划)资助项目(2004CB217907)
国家自然科学基金重大项目(50595412)
南方电网贵州分公司项目~~
关键词
调速器
一次调频
限速
孤网
频率稳定
governor
primary frequency regulation
rate limited
isolated grid
frequency stability
