一种新型储能双馈风电机组的运行与控制研究  

Operation and Control of a Novel Doubly-fed Induction Generator with Energy Storage

作　　者：朱煜昆[1] 陈煜[1] 

机构地区：[1]华中科技大学电气与电子工程学院,武汉430074

出　　处：《华东电力》2013年第9期1851-1855,共5页East China Electric Power

摘　　要：建立一种新型储能双馈风电机组的运行与控制仿真模型,以平抑风电功率波动为主要控制目标,可以辅助改善机组低电压穿越能力并提升弱电气联系条件下机组并网能力。首先以平抑0.01 Hz^1 Hz的风电功率波动为储能双馈风电机组的控制目标,引入两种控制策略:一阶平滑滤波模式和恒定并网功率模式,通过仿真分析了两者的平抑效果,并对储能容量需求进行了比较说明。然后,研究储能双馈风力发电机组的并网运行特性,对储能改善低电压穿越能力的控制及作用效果,以及储能提升弱电气联系条件下并网能力的作用效果,特别是与风电机组群相互之间动态耦合问题,进行了仿真验证。Jn this paper, a simulation model for the operation and control of a novel doubly-fed induction generator with energy storage （DFIG/E） has been established, mainly for restraining the wind power fluctuations, and provi- ding assistance to improve the ability of LVRT as well as grid integration capability in the condition of weak electrical connection. Firstly, taking the restraining 0.01Hz - 1Hz wind power fluctuations as the control objective of the DFIG/E, two control strategies, i.e. first order smooth filtering mode and constant grid connected grid power mode, are introduced. The effectiveness of smoothing wind power fluctuations with either strategy is analyzed through simula- tion. The illustrative comparison of the demand in energy storage capacity is given as well. Finally, this paper resear- ches on the characteristics of grid connection of the DFIG/E. It also simulates and verifies the effectiveness of energy storage in improving the LVRT property and the grid-connecting ability in the condition of weak electrical contact, es- pecially the dynamic coupled oscillations between wind turbine units.

关 键 词：储能双馈风电机组 波动平抑 低电压穿越 弱电气联系 

分 类 号：TM614[电气工程—电力系统及自动化]