作　　者： ; ; ; (薛禹胜）;

机构地区： 华南理工大学电力学院

出　　处： 《电力系统自动化》 2013年第17期23-29,135,共8页

摘　　要： 随着风电装机容量在电力系统中渗透率的逐步提高,其对电力系统的影响越来越明显。这样,就很有必要系统地分析风电机组对电力系统小干扰和暂态稳定性的影响,以便研究针对性措施。在此背景下,对3类常见的风电机组接入后的电力系统稳定性进行了系统的比较研究。首先给出了这3类风电机组的动态模型,之后以美国西部联合电力系统(WSCC)3机9节点系统为例,采用特征值分析和动态时域仿真方法,系统地比较了在同一母线接入异步风电机组、双馈风电机组、永磁直驱风电机组与接入同等容量同步发电机组对小干扰稳定和暂态稳定性的影响。研究结果表明,3类风电机组并网对小干扰稳定和暂态稳定性的影响程度均有所不同。 With the ever-increasing penetration level of wind power, the impacts of wind power on the power systems are becoming more and more significant. Hence, it is necessary to systematically examine its impacts on the small signal stability and transient stability in order to find out countermeasures. As such, a comprehensive study is carried out to compare the dynamic performances of power system respectively with three widely-used power generators. First, the dynamic models are described for three types of wind power generators, i.e. the squirrel cage induction generator （SCIG）, doubly-fed induction generator （DFIG） and permanent magnet generator （PMG）. Then, the impacts of these wind power generators on the small signal stability and transient stability are compared with that of a substituted synchronous generator （SG） in the WSCC three- machine nine-bus system by the eigenvalue analysis and dynamic time-domain simulations. Simulation results show that the impacts of different wind power generators are different under small and large disturbances.

关 键 词： 电力系统 风电并网 风电机组 小干扰稳定 暂态稳定

领　　域： [电气工程]