Review on Grouping Method of Large Wind Farm Wind Turbine Generators

doi:10.11985/2016.05.001

Abstract

Abstract:

Advanced and scientific grouping method of wind turbine generators is very important to study the equivalent characteristics of large wind farm. The paper reviews the grouping methods of wind turbine generators, and discusses the limitations of the existing methods and the problems to be solved. The analysis results show that the grouping methods can be divided into two kinds of technical route, which can be considered as the input characteristic and the output characteristic of the wind turbine generators. Among, the grouping methods of considering the input characteristics is the hot research, and the main focus of the research is to study the influence of the input wind speed on the wind power generation, but other factors that affect the behavior of the wind turbine generator are not considered. The grouping method of considering the output characteristic of the wind turbine generator is based on the time series of the output power, which has the advantages of grouping the results, and the model is simple in the theory, but there is a lack of predictability in theory, and cannot be controlled in real time. There are a lot of important factors that affect the equivalent characteristics of wind farm, such as wake effect, wind condition correlation, geographical features of wind farm and so on, more reasonable and advancer wind generation turbine grouping method to study; At present, the method of wind power generating unit is mainly for the simplified modeling of large wind farm, and the research on the other advanced application is seldom carried out, but it is worth paying attention to.

Key words: Wind Farm, equivalent characteristic, wind turbine generator, grouping method

CLC Number:

TM614

Shen Xiaojun,Zhou Chongcheng,Lü Hong. Review on Grouping Method of Large Wind Farm Wind Turbine Generators[J]. Journal of Electrical Engineering, 2016, 11(5): 1-10.

Figures/Tables 10

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技术路线	分组方法	优点	缺点
基于风电机组输入特性	集电线路	方法简单,避免多次分组;可用于风电场能量管理系统	模型误差大,动态特性差,不能用于风电场动态与暂态等值建模
	排列地理位置	方法简单,计算量小;适合排列规则风电场等值建模,如海上风电场	对地理位置要求过于严格,未考虑尾流效应,不适用于不规则风电场动态等值建模
	机械控制系统特征	原理清晰,方法简单,适合双馈机组风电场静态等值建模	局限于双馈风电机组,风电机组间尾流效应、风速随机性考虑不足
	桨距角控制动作	并网点动态特性好,适用于大型双馈机组风电场并网动态特性研究	没计及尾流效应、湍流、流动随机性,不适用于风电场静态等值建模
	功率相关性	模型精确,适用于风电场静态、动态特性研究	系统复杂,计算量较大,需工程验证
	风电场流动性	动态特性好,模型精确,实时操作性强;适合单一风电场动态等值建模与风电场功率预测	模型复杂,风电机组训练、学习时间长,计算量大,不适合大型复杂风电场
基于风电机组输出特性	输出时间序列	输出特性好,避免多次分组;适合风电场输出特性研究	不能体现风电场输入端特性,不适用于风电场实时调度与控制等值建模