风电场柔性直流并网系统镇定器的频域分析与设计

被引：84

作者：

吕敬

蔡旭

机构：

[1] 上海交通大学电子信息与电气工程学院风力发电研究中心

来源：

中国电机工程学报 | 2018年 / 38卷 / 14期

基金：

国家重点研发计划;

关键词：

模块化多电平换流器; 高压直流输电; 风电场; 稳定性; 稳定控制;

D O I：

暂无

中图分类号：

TM614 [风能发电];

学科分类号：

080811 [新能源发电与电能存储];

摘要：

风电场经基于模块化多电平换流器的柔性直流输电系统(modular multilevel converter based high-voltage direct current,MMC-HVDC)并网时易出现次同步振荡现象。引入谐波状态空间建模方法建立了MMC的多频率耦合模型,在此基础上,利用谐波线性化原理推导了计及内部动态过程的MMC交流侧小信号阻抗模型。从阻抗特性的角度揭示了风电场经MMC-HVDC并网系统的失稳机理。在失稳机理分析的基础上,分别从风电场侧MMC换流站和风电场两方面提出了互联系统的镇定控制方法,并对控制参数进行了设计。基于Matlab/Simulink建立了风电场经MMC-HVDC并网系统的时域仿真模型,仿真结果验证了理论分析的正确性和所提方法的有效性。

引用

收藏

页码：4074 / 4085+4313 +4313

页数：13

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