摘要
风力机模拟系统(WTS)为实验室内开展风力发电系统的各项技术研究提供了设备基础。分析了风力机气动特性,指出常规的风力机静态模拟方法会改变对象的频域模型,无法真实模拟风力机的动态特性,阐明了采用动态模拟的必要性。目前,常用的风力机动态模拟方法需要对转速直接求导,会影响系统的稳定性。为了克服该问题,需要对相关的滤波环节进行深入分析和精心设计,但工作量大、难度高、通用性差。为此,进一步探讨了一种基于转速控制的风力机动态模拟方法,消除了常用WTS中的微分环节,可显著提高了系统的整体性能。文章详细地分析了两种动态模拟方法的基本原理及可行性,并进行了实验验证和比较研究。
The arising of wind turbine simulator（WTS） makes the evaluation and improvement of wind power generation technology in laboratory possible.In this paper,by analyzing the aerodynamic characteristic of wind turbines,it unveils that the conventional static simulation method of WTS will change the frequency model of real wind turbine,and can not reproduce its transient behavior.Although the appearance of dynamic simulation method could overcome these problems,the common used method which is realized by derivative calculation of rotor speed will greatly deteriorate the stability of WTS,and increase the design strength and difficulty because low-pass filters should be elaborately designed.Therefore,another dynamic simulation method which thoroughly eliminates the usage of derivative operator and considerately improves the performance of WTS is addressed,whereas the complexity of WTS remains unchanging.The operational principle and feasibility of the two methods are detailed discussed.Finally,simulation and experiment are carried out.
出处
《电工技术学报》
EI
CSCD
北大核心
2012年第10期79-85,共7页
Transactions of China Electrotechnical Society
基金
国家重点基础研究发展计划资助项目(2007CB210303)
关键词
风力发电
风力机模拟
动态模拟
微分环节
稳定性
Wind power generation
WTS
dynamic simulation
derivative operator
stability
