采用滤波器的风电场谐波抑制策略研究

Research on Harmonic Suppression Strategy of Wind Farm Using Filter

随着社会的发展,不可再生能源日益枯竭,使得寻找新能源成为目前科学领域的重大课题。风力发电技术由于其诸多优点得到了迅速发展,但是也存在许多问题,谐波问题是其中之一。由于风力发电机向电网输送能量的同时,也会向电网注入一定含量的各次谐波,严重降低了电网的电能质量。针对这一问题,对谐波的产生及其不同的分析方法进行深入研究,比较分析了不同谐波分析方法的优势与劣势;结合风力发电的特点及谐波的产生原理,计算风力发电机的谐振频率,设计阻尼控制环节,分析抑制风力发电产生谐波的方法,以期为相关课题的研究奠定基础。

With the development of society,the non-renewable energy is increasingly exhausted,and the search for new energy is an important subject in the field of science. Wind power generation technology has been developed rapidly because of its many advantages. But there are many problems in wind power generation,one of which is the harmonic problem. As the wind turbine delivers energy to the power grid,it also injects a certain amount of harmonics into the power grid,which seriously reduces the power quality of the grid. In this paper,the generation of harmonic and its different analysis methods are studied in depth,and the advantages and disadvantages of different harmonic analysis methods are given,the resonance frequency of the Wind Turbine is calculated,the damping control is designed,and the method of restraining the harmonic produced by the wind turbine is analyzed.