风火打捆输电系统小扰动的稳定性  

The Small Signal Stability for Transmitting Wind Power Bundled with Thermal Power

作　　者：曹喜民[1] 刘天琪[1] 李兴源[1] 李从善[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065

出　　处：《东北大学学报（自然科学版）》2016年第1期19-23,共5页Journal of Northeastern University(Natural Science)

基　　金：国家高技术研究发展计划项目(2011AA05A119)

摘　　要：针对风火打捆输电系统小扰动稳定性问题,建立了包括双馈风电机组风力机模型、浆距角控制模型、变流器模型、控制系统模型和感应发电机模型的风火打捆输电系统小扰动模型.详细介绍了风火打捆外送系统小扰动稳定性分析方法;在构造的风火打捆外送仿真系统中对风火打捆输电系统与大电网的联络线紧密程度、风电负载率、风火电配置比例对系统小扰动稳定性的影响进行了仿真分析.仿真结果表明:风电场与系统的联络越弱,系统小扰动稳定性越差,同时风电负载率和风火电配置比例也直接影响系统的小扰动稳定性.In order to research the small signal stability of wind-thermal bundled transmission system, the small perturbation analysis model of wind-thermal bundled transmission system was established, which included wind turbine, pitch angle control system, converter control system, the induction generator. The small signal stability analysis method of the wind-thermal bundled system was introduced in detail. The system eigenvalues of wind-thermal bundled transmission systems with different wind power access, wind power output level, wind-thermal allocation ratio and delivery line length were calculated under the simulation system of wind-thermal bundled transmission established. The simulation results showed that the weaker the relationship between wind power and the power system was, the worse the small signal stability of wind power was. In addition, the small signal stability of the system would be directly impacted by the wind power output level and wind-thermal allocation ratio.

关 键 词：风电 火电 配置比例 小扰动稳定性 小扰动模型 

分 类 号：TM715[电气工程—电力系统及自动化]