兆瓦级双馈风力发电系统低电压穿越实现措施及效果验证

刘颉，唐求

LIU Jie，TANG Qiu

(College of Electrical and Information Engineering,Hunan University,Changsha 410082,China)

Received:2015-12-28 Revised:2016-03-17 Online:2017-10-25 Published:2017-10-25

摘要：

针对双馈风力发电系统在电网电压发生跌落故障时影响风电机组稳定运行甚至产生解列这一情况，采用了基于动态刹车电阻

DBR回路方案来解决这一技术难题。对WT2000型兆瓦级双馈风力发电系统低电压穿越功能模块进行了介绍，利用

Matlab/Simulink进行了系统仿真，并在WT2000型兆瓦级双馈风力发电系统上进行了实地测量。结果表明，在电网电压发生跌

落时，能在短时间内响应故障启动泄容装置，使系统维持安全工作状态，符合GB/T 19963-2011《风电场接入电力系统技术规

定》国家标准。

关键词: 双馈风力发电系统, 低电压穿越, 动态刹车电阻, WT2000

Abstract:

The stable operation of the wind turbines of the doubly fed wind power generation (DFIG) system can be

affected when the grid voltage drop occurs. On the basis of previous studies’ results, we propose a circuit

based on the dynamic braking resistor (DBR)to solve the low voltage ride-through (LVRT) problem. We first

introduce the low voltage ride through function module of WT2000 MW class DFIG system. Then we carry out

system simulations by using the Matlab/Simulink, and perform field measurements on a WT2000 MW class DFIG

system. The results show that the system can respond to the fault and activate discharge devices in short

time so as to maintain the safe working condition when the voltage drop occurs. The proposal conforms to the

national standard of GB/T 19963-2011 “Technical Requirements of Wind Farm Access Power System”.

Key words: DFIG(doubly fed wind power generation), low voltage ride-through, DBR(dynamic braking resistor), WT2000

刘颉，唐求. 兆瓦级双馈风力发电系统低电压穿越实现措施及效果验证[J]. 计算机工程与科学.

LIU Jie，TANG Qiu.

Implementation and verification of

LVRT function of MW class DFIG

[J]. Computer Engineering & Science.

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