摘要
在对风电场进行等效建模时,一般以风电机组运行状态相近为原则进行分群聚合,从而得到风电场的多机等效模型。如果在保证精度的情况下能够对运行状态有明显差异的风电机组进行聚合,将有助于建立更加简化的风电场等效模型。以基于双馈感应发电机(DFIG)的风电场为研究对象,针对承受风速有显著差异的DFIG机组的聚合问题,提出了相应的DFIG机组转子侧控制器聚合方法。该方法通过调整等效控制器的控制参考值,来提高风电场等效模型的稳态和动态精度,从而实现风速差异显著的DFIG机组的聚合。文中给出了基于控制参数调整的DFIG风电场单机等效建模流程,为建立具有良好精度的风电场等效模型提供了一种不同于分群聚合的思路。最后,通过仿真算例对所提方法进行了分析和验证。
Clustering and aggregating the wind turbine generators with similar operation state is common in the wind farm equivalent modeling,which can obtain a multi-machine equivalent model of the wind farm.A more simplified equivalent model can be obtained if wind turbine generators in different operation states can be aggregated with satisfied accuracy.This paper is focused on the equivalent modeling of doubly-fed induction generators（DFIGs）with significant difference in wind speeds.An aggregation method of rotor-side controller of DFIG is proposed.The reference value of the aggregated rotor-side controller will be modified to improve both the steady and dynamic accuracy of the equivalent model.Thus,the aggregation of DFIGs under different wind speeds can be achieved.And a procedure for obtaining a single-machine equivalent model of a DFIG-based wind farm is also proposed.The proposed method brings a new way to build a more simplified equivalent model of the wind farm, which is different from the clustering and aggregation method.A case study is used to test and verify the proposed method.
出处
《电力系统自动化》
EI
CSCD
北大核心
2014年第3期19-24,共6页
Automation of Electric Power Systems
基金
国家高技术研究发展计划(863计划)资助项目(2011AA05A103)
国家自然科学基金重大项目(51190102)~~
关键词
风力发电
双馈感应发电机
风电场
等效建模
控制器
聚合模型
wind power
doubly-fed induction generator（DFIG）
wind farm
equivalent modeling
controller
aggregated model
