大规模风力发电机脱网故障模型研究与展望

Study and Expectation on Off-grid Fault Model of Large-scale Wind Power Generator

对大规模风力发电机(以下简称风机)脱网事故进行分析并对故障模型进行综述。比较了常规电厂和风电场的区别,分析总结风机种类及其故障特征,在此基础上探讨风电发展及其并网技术,并对风机低电压穿越能力进行分析。通过研究国内外风电并网技术,对风机脱网事故原因进行分析,阐述了各种风机脱网故障模型的仿真效果,最后针对风机脱网故障模型问题提出总结及展望,认为应加强风电机组电磁暂态通用模型研究。

This paper analyzes off-grid accident of large-scale wind power generator and summarizes fault model. It compares differences of common power plant and wind power plant, analyzes and summarizes wind power generator types and fault characteristic. On the basis of above analysis, this paper discusses wind power development and power grid integration tech- nology and analyzes low voltage ride through ability of wind power generator. By studying wind power grid integration tech- nology at home and abroad, it analyzes reasons for off-grid accident of wind power generator and states simulation effective- ness of various off-grid fault models. Aiming at problem of off-grid fault model of wind power generator, it proposes summa- tive evaluation and expectation and considers necessity to strengthen study on electromagnetic transient common model of wind power generator.