弱电网不对称故障期间双馈风电系统动态稳定性分析

被引:29
作者
姚骏 [1 ]
孙鹏 [1 ]
刘瑞阔 [2 ]
方欣 [1 ]
迟永宁 [3 ]
田新首 [3 ]
机构
[1] 输配电装备及系统安全与新技术国家重点实验室(重庆大学)
[2] 中国长江三峡集团有限公司科学技术研究院
[3] 新能源与储能运行控制国家重点实验室(中国电力科学研究院有限公司)
关键词
双馈感应发电机; 弱电网; 不对称故障; 动态稳定; 风电并网;
D O I
暂无
中图分类号
TM614 [风能发电]; TM712 [电力系统稳定];
学科分类号
080802 [电力系统及其自动化]; 080811 [新能源发电与电能存储];
摘要
弱电网严重不对称故障期间双馈感应发电机与电网之间的动态耦合作用增强,使得风电系统存在振荡失稳的风险。为探索其振荡失稳机理,该文首先建立考虑控制器动态的双馈风电系统复频域阻抗模型。根据阻抗模型的输入输出特性,详细描述双馈风机和电网正负序阻抗之间的动态相互作用关系。并采用广义奈奎斯特判据综合评估不同因素对弱电网不对称故障期间双馈风电系统动态稳定性的影响规律,为故障过程中控制器带宽的选择提出建议。最后,通过仿真和实验验证理论分析的正确性。
引用
收藏
页码:7225 / 7237
页数:13
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