储能虚拟同步机的并网阻尼特性分析与改进策略

石荣亮; 王斌; 黄冀; 王国斌; 兰才华

doi:10.19912/j.0254-0096.tynxb.2022-0410

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太阳能学报 ›› 2023, Vol. 44 ›› Issue (7) : 30-38. DOI: 10.19912/j.0254-0096.tynxb.2022-0410

储能虚拟同步机的并网阻尼特性分析与改进策略

石荣亮^1~3, 王斌¹, 黄冀³, 王国斌², 兰才华²

作者信息 +

ANALYSIS AND IMPROVEMENT STRTEGY OF GRID-CONNECTED DAMPING CHARACTERISTIC FOR ENERGY STORAGE VSG

Shi Rongliang^1-3, Wang Bin¹, Huang Ji³, Wang Guobin², Lan Caihua²

Author information +

文章历史 +

摘要

针对储能虚拟同步机（VSG）并网运行时在有功功率指令与电网频率扰动条件下存在有功功率动态振荡与稳态偏差的问题,提出一种基于有功功率微分反馈的暂态阻尼优化策略。首先给出储能VSG的控制原理,建立储能VSG在有功功率指令与电网频率扰动下的并网有功闭环小信号模型,分析阻尼系数对输出有功的动态振荡与稳态偏差的影响规律,在此基础上提出基于有功功率微分反馈的暂态阻尼改进策略并给出其参数设计方法,最后利用仿真与实验验证了所述阻尼优化策略在抑制有功功率动态振荡与消除稳态偏差方面的有效性与优越性。

Abstract

In order to solve the problems that the active power dynamic oscillation and steady-state deviation under the condition of active power command and grid frequency disturbance when the energy storage virtual synchronous generator （VSG） is connected to the grid, a transient damping optimization strategy based on the active power differential feedback is proposed in this paper. The energy storage VSG control principle is given, and the grid-connected active closed-loop small-signal model of the energy storage VSG under active power command and grid frequency disturbance is established firstly. After that, the influence law of the damping coefficient on active power dynamic oscillation and steady-state deviation is analyzed. On this basis, a transient damping improvement strategy using an active power differential feedback as well as its parameter design method are given. Finally, the simulation as well as experimental comparison results are used to verify the effectiveness and superiority of the damping optimization strategy in suppressing active power oscillation and eliminating steady-state deviation.

导出引用

石荣亮, 王斌, 黄冀, 王国斌, 兰才华. 储能虚拟同步机的并网阻尼特性分析与改进策略[J]. 太阳能学报. 2023, 44(7): 30-38 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0410

Shi Rongliang, Wang Bin, Huang Ji, Wang Guobin, Lan Caihua. ANALYSIS AND IMPROVEMENT STRTEGY OF GRID-CONNECTED DAMPING CHARACTERISTIC FOR ENERGY STORAGE VSG[J]. Acta Energiae Solaris Sinica. 2023, 44(7): 30-38 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0410

中图分类号： TK514

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