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低电压穿越策略对故障选相的影响

低电压穿越策略对故障选相的影响

Influence of low voltage ride-through strategy on fault phase selection

Influence of low voltage ride-through strategy on fault phase selection

doi:
10.3969/j.issn.1002-1663.2018.01.018
摘要:
为了准确分析大规模风力发电系统对继电保护选相元件的影响,针对双馈风电机组,将风电场的弱馈特性和低电压穿越措施相结合,通过对风电场故障特征的分析,指出Crowbar电路的投入可能导致故障选相装置选相精度的降低甚至造成误选相的发生.最后,在 Matlab/Simulink环境下利用参数聚合法搭建了200 MW双馈风力发电系统接入电网的仿真模型,并对选相判据编程,仿真结果验证了分析的正确性.
Abstract:
In order to accurately analyze the influence of large-scale wind power generation system on fault selector elements of relay protection,the characteristic of weak feedback and low voltage ride-through measures of wind farm are combined,the study of this paper is for the doubly fed wind turbine. And through the analysis of wind farm fault characteristics,it is pointed out that the input of the Crowbar circuit may lead to phase selector accuracy reduction of fault phase selector and even the unwanted phase selection. Lastly, using the parameter aggregation method in the Matlab/Simulink environment,by which a simulation model of 200MW doubly fed wind power gener-ation system is build. access to power system The phase selection criterion is programed. and the simulation results verify the validity of this analysis method.
作者 白彩霞 孙骞 刘斌
Author: Bai Caixia SUN Qian LIU Bin
作者单位 内蒙古东部电力有限公司 通辽供电公司,内蒙古 通辽,028000
期 刊: 黑龙江电力
Journal: Heilongjiang Electric Power
年,卷(期) 2018, 40(1)
分类号 TM614
关键词: 风力发电系统 知识脉络 低电压穿越 知识脉络 选相元件 知识脉络
Keywords: wind power generation system Low voltage ride-through phase selector element
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