基于一阶LADRC控制的直驱风机次同步振荡抑制策略

doi:10.11930/j.issn.1004-9649.202105038

中国电力 ›› 2022, Vol. 55 ›› Issue (4): 175-184.DOI: 10.11930/j.issn.1004-9649.202105038

基于一阶LADRC控制的直驱风机次同步振荡抑制策略

蔡维正, 郭昆丽, 刘璐雨, 吴朝俊

西安工程大学电子信息学院，陕西西安 710048

收稿日期:2021-05-09 修回日期:2022-02-16 出版日期:2022-04-28 发布日期:2022-04-24
作者简介:蔡维正（1994—），男，硕士研究生，从事新能源并网次同步振荡研究，E-mail：1312393045@qq.com;郭昆丽（1974—），女，通信作者，硕士，副教授，从事电力系统运行与控制研究，E-mail：guo_kunli@xpu.edu.cn
基金资助:
陕西省自然科学基础基金资助项目（PN结分数阶建模及其广义忆阻混沌电路复杂动力学行为研究，2021 JM-449）；西安工程大学研究生创新基金（光伏多峰值MPPT技术研究，chx2021014）。

Subsynchronous Oscillation Mitigation Strategy Based on First-Order LADRC for Direct-Drive Wind Turbines

CAI Weizheng, GUO Kunli, LIU Luyu, WU Chaojun

School of Electronics and Information, Xi'an Polytechnic University, Xi'an 710048, China

Received:2021-05-09 Revised:2022-02-16 Online:2022-04-28 Published:2022-04-24
Supported by:
This work is supported by Natural Science Foundation of Shaanxi Province (Fractional-order Modeling of PN Junction and Research on Complex Dynamic Behavior of Generalized Memristive Chaotic Circuits, No. 2021 JM-449), Postgraduate Innovation Fund of Xi’an Polytechnic University (Photovoltaic Multi-peak MPPT Technology Research, No. chx2021014).

摘要/Abstract

摘要： 针对直驱式风电机组接入弱交流电网诱发次同步振荡 (subsynchronous oscillation, SSO) 问题，提出一阶线性自抗扰控制(linear active disturbance rejection control, LADRC)策略抑制该现象，从而提高系统稳定性。首先，建立直驱式风电机组的并网数学模型，分析次同步振荡频率扰动分量的传播机理；然后，进行一阶LADRC电流内环控制器设计以及参数优化整定，分析表明：控制器对于次同步频率扰动分量有较强的抑制作用。最后，基于PSCAD/EMTDC仿真软件，建立传统PI和一阶LADRC控制的直驱式风电机组电磁暂态仿真模型。结果表明：所提方法能够阻断次同步频率扰动分量传播，有效抑制SSO。

关键词: 次同步振荡, 直驱风机, 弱交流电网, LADRC, 时域仿真

Abstract: Aiming at solving the problem of subsynchronous oscillations (SSOs) induced by direct-drive wind turbines connected to the weak AC power grid, this paper proposes a first-order linear active disturbance rejection control (LADRC) strategy to suppress this phenomenon, thereby improving system stability. Firstly, the grid-connected mathematical model of direct-drive wind turbines is built, and the propagation mechanism of frequency disturbance components of SSOs is analyzed. On this basis, we design the first-order LADRC inner-loop current controller and optimize and tune the parameters, and the analysis indicates that the controller has a strong inhibitory effect on the frequency disturbance components of SSOs. Finally, using PSCAD/EMTDC simulation software, we build an electromagnetic transient simulation model of direct-drive wind turbines controlled by traditional PI and first-order LADRC. The results demonstrate that the proposed method can block the frequency disturbance components of SSOs and effectively suppress SSOs.

Key words: subsynchronous oscillation, direct-drive wind turbine, weak AC power grid, LADRC, time-domain simulation

蔡维正, 郭昆丽, 刘璐雨, 吴朝俊. 基于一阶LADRC控制的直驱风机次同步振荡抑制策略[J]. 中国电力, 2022, 55(4): 175-184.

CAI Weizheng, GUO Kunli, LIU Luyu, WU Chaojun. Subsynchronous Oscillation Mitigation Strategy Based on First-Order LADRC for Direct-Drive Wind Turbines[J]. Electric Power, 2022, 55(4): 175-184.

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https://www.electricpower.com.cn/CN/Y2022/V55/I4/175

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基于一阶LADRC控制的直驱风机次同步振荡抑制策略

Subsynchronous Oscillation Mitigation Strategy Based on First-Order LADRC for Direct-Drive Wind Turbines

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基于一阶LADRC控制的直驱风机次同步振荡抑制策略

Subsynchronous Oscillation Mitigation Strategy Based on First-Order LADRC for Direct-Drive Wind Turbines

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