电气技术  2014, Vol. 15 Issue (11): 29-32    DOI:
研究与开发 |
直驱风力发电机组全功率变流器网侧甩负荷故障分析及保护策略研究
顾伟峰, 杨志千, 郭锐
北京天诚同创电气有限公司,北京 100176
Research on the Analysis and Protective Strategy of Grid side Load Throw-off Fault of Full Power Converter for Direct-drive Wind Turbine
Gu Weifeng, Yang Zhiqian, Guo Rui
Beijing Etechwin Electric Co., Ltd, Beijing 100176
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摘要 直驱技术在目前大容量风力发电机组的比例越来越高,而全功率变流器在直驱机组中起到了连接电网与发电机的惟一能量转换通道作用,其可靠性对整机的可利用率有决定性意义。本文对直驱机组正常运行情况下,因箱变低压侧或高压侧突然跳闸导致变流器网侧甩负荷的故障工况进行了详细分析。通过分析可以看出,这种工况下如果没有采取有效保护,会导致变流器直流母线电压骤升,会导致功率器件失效,特别是IGBT模块。因此本文提出来一种保护策略并通过仿真验证该策略的有效性。
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顾伟峰
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关键词 直驱风力发电机组全功率变流器网侧甩负荷保护策略    
Abstract:Direct-drive technology is applied in large scale wind turbine more and more popularly. As only power pathway between the grid and the Direct-drive wind turbine, the reliability of full power converter is very important for utilization ratio of turbine. In this paper, the fault of load throw-off on the grid side is analyzed in detail. Under this fault operating mode, if the effective protection is not adopted, the DC bus voltage of converter will steps up quickly, and the power devices especially IGBT modules will be broke down. Thus a novel protective strategy is proposed and the validity of the strategy is supported by simulation result.
Key wordsdirect-drive wind turbine    full power convertor    grid side    load throw-off    protective strategy   
     出版日期: 2014-12-22
作者简介: 顾伟峰(1978-), 男, 浙江诸暨人, 工学硕士, 工程师, 主要从事风电变流器的设计与开发。
引用本文:   
顾伟峰, 杨志千, 郭锐. 直驱风力发电机组全功率变流器网侧甩负荷故障分析及保护策略研究[J]. 电气技术, 2014, 15(11): 29-32. Gu Weifeng, Yang Zhiqian, Guo Rui. Research on the Analysis and Protective Strategy of Grid side Load Throw-off Fault of Full Power Converter for Direct-drive Wind Turbine. Electrical Engineering, 2014, 15(11): 29-32.
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https://dqjs.cesmedia.cn/CN/Y2014/V15/I11/29