基于次同步振荡局部传播机制的建模边界识别  

Identifying Modeling Boundary Using Local Propagation Mechanism of Subsynchronous Oscillations

作　　者：陈武晖[1] 王丹辉[1] 郭小龙 程欣[1] 谭伦农[1] 沈跃[1] 

机构地区：[1]江苏大学电气信息工程学院,江苏省镇江市212013 [2]国网新疆电力调度控制中心

出　　处：《中国电机工程学报》2017年第17期4999-5009,共11页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51277089);新能源与储能运行控制国家重点实验室开放基金资助~~

摘　　要：根据次同步谐振的诱发机理,揭示了汽轮发电机组与串补线路相互作用的次同步振荡局部传播机制,阐明了电气谐振约束了次同步振荡的传播。然后,推导了次同步功率传播与次同步谐振电气负阻尼系数的关系式,根据这个关系式提出了一种确定次同步谐振实际系统建模边界的新方法。最后,应用IEEE 10机39节点和16机68节点标准系统,从时域仿真轨迹和频域模态两方面验证了此建模方法的合理性。In this paper, the local propagation mechanism of subsynchronous oscillations （SSO） caused by interaction between turbine-generators and series compensated line was proposed on the base of the induced mechanism of subsynchronous resonance （SSR）. According to the local propagation mechanism of SSO, it is revealed that the electric resonance constrains the propagation of SSO. This paper also deduced the formula involving the propagated subsynchronous power and the electrical negative damping coefficient. Then, a new method for identifying the boundary of SSR modeling in real systems was developed by using the proposed above formula. Finally, the IEEE 10-machine 39-bus and 16-machine 68-bus standard test systems were used to justify the proposed method in terms of time domain simulation curves and frequency domain modes.

关 键 词：次同步谐振 局部传播机制 建模边界 汽轮发电机组 

分 类 号：TM71[电气工程—电力系统及自动化]