| 引用本文: | 闫来清,邓熙炜,赵 喆,等.基于自适应前馈补偿的VSG功率解耦控制策略[J].电力系统保护与控制,2024,52(24):64-73.[点击复制] |
| YAN Laiqing,DENG Xiwei,ZHAO Zhe,et al.VSG power decoupling control strategy based on adaptive feedforward compensation[J].Power System Protection and Control,2024,52(24):64-73[点击复制] |
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| 摘要: |
| 虚拟同步机(virtual synchronous generator, VSG)因可提高电网中的阻尼和惯量而备受关注。在线路呈现高阻抗比以及大功角工况下，针对VSG输出有功功率与无功功率之间存在严重的功率耦合问题，在前馈补偿策略的基础上，提出自适应前馈补偿控制策略。首先引入VSG的基本控制策略，分析功角对线路功率耦合的影响。然后，在前馈补偿策略的基础上，引入自适应前馈补偿功率解耦控制策略，通过自适应修改前馈补偿系数对功率耦合量进行补偿，消除有功功率和无功功率之间的耦合。建立基于所提自适应前馈补偿的小信号模型，分析所采用解耦策略对系统稳定性的影响。最后，通过Matlab/Simulink仿真验证该解耦控制策略不仅有效消除了功率环之间的耦合，还显著增强了VSG输出功率的暂稳态性能。 |
| 关键词: VSG 大功角 功率解耦 自适应前馈补偿 小信号模型 |
| DOI：10.19783/j.cnki.pspc.240336 |
| 投稿时间：2024-03-26修订日期：2024-09-03 |
| 基金项目:山西省应用基础研究计划青年项目资助(202203021212484)；山西省高校科技创新项目资助(2023L002)；山西发改委大众创业万众创新专项资助(137541005)；教育部产学合作协同育人项目资助(221002262073019) |
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| VSG power decoupling control strategy based on adaptive feedforward compensation |
| YAN Laiqing1,DENG Xiwei1,ZHAO Zhe1,ZHANG Yuanyuan1,YUAN Yuan2,3,PENG Piaopiao1 |
| (1. School of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, China;
2. Shanxi Chengshi Dongli New Energy Company, Datong 037300, China; 3. Energy Storage
Technology Pilot Base in Shanxi, Datong 037300, China) |
| Abstract: |
| The virtual synchronous generator (VSG) has attracted much attention due to its ability to improve damping and inertia in the power grid. When the line presents a high impedance ratio and a large power angle, there is a serious power coupling problem between the VSG output active and reactive power. Based on a feedforward compensation strategy, an adaptive feedforward compensation control strategy is proposed. First, the basic control strategy for a VSG is introduced to analyze the influence of power angle on line power coupling. Then, based on the feedforward compensation strategy, an adaptive feedforward compensation power decoupling control strategy is introduced to compensate for the power coupling amount by adaptively modifying the feedforward compensation coefficient and eliminate the coupling between active and reactive power. A small-signal model based on the proposed adaptive feedforward compensation is established to analyze the impact of the adopted decoupling strategy on system stability. Finally, Matlab/Simulink simulation is used to verify that the decoupling control strategy not only effectively eliminates the coupling between power loops, but also significantly enhances the transient steady-state performance of the VSG output power. |
| Key words: VSG large power angle power decoupling adaptive feedforward compensation small signal model |
