基于无功功率捕捉振荡中心的方法研究  

A New Method to Capture the Oscillation Center Based on Reactive Power Integral

作　　者：王乙斐[1] 吴佳军[2] 云雷 马志昊[1] 邵雅宁[1] 王亚俊[1] 

机构地区：[1]武汉大学电气工程学院,湖北武汉430072 [2]河南省电力公司,河南郑州450052 [3]广东电力科学研究院,广东广州510600

出　　处：《陕西电力》2013年第5期21-26,共6页Shanxi Electric Power

基　　金：国家高技术研究发展项目(863计划)资助(2011AA-05A119);国家电网公司重大专项课题(SGCC-MPLG029-2012)

摘　　要：电力系统建设与发展的需要使得我国形成了跨区域互联电网。当系统中某处发生振荡时,若没有及时采取解列控制,事故可能会在系统中蔓延,造成系统稳定性破坏,甚至造成不可控恶性连锁反应事故的发生。分析了电力系统失步后电气量变化特征,提出了基于无功功率积分的振荡中心定位判据,并在CEPRI-36节点系统中进行仿真分析。试验结果表明该方法能从电力系统全局出发,采用多端电气参量对失步中心进行准确定位和捕捉,实时监控系统状态,自动适应系统电网结构和运行方式的变化,对失步状态进行快速识别和解列。The construction and development of power system make our country form cross area interconnected power grid. When somewhere oscillates in the system, if there is no timely disconnection control, accident may spread in the system which will cause stability damage, even more uncontrollable chain reaction. So how to guarantee system make out-of-step separation in the critical moment is the important task in the current power system. This paper analyzes electric parameters variation characteristics after out- of-step, proposed oscillation ce, nter positioning cretion based on reactive power integral, and simulation analysis in CEPRI-36 node system. The experimental result shows that this control method can start from the overall situation of the power system, adopt multiple electrical parameters to locate and capture oscillation accurately, monitor system state timely, automatic adaptive system network structure and operation mode change, recognize and separate the condition of out-of-step.

关 键 词：广域电网 失步中心 母线电压 无功功率 

分 类 号：TM712[电气工程—电力系统及自动化]