基于解耦自抗扰控制的光伏并网稳定研究及应用

doi:10.3969/j.issn.1674-1951.2021.08.002

摘要/Abstract

摘要：

碳中和背景下构建新型能源系统,电网将消纳更多的光伏等可再生能源。为提升分布式光伏电站并网系统的动态频率支撑能力及暂态电压稳定性,静止无功发生器（STATCOM-BESS）因具备快速响应能力现已规模化布局于光伏电站内。STATCOM-BESS附加阻尼控制可以平抑系统功率振荡。在此背景下,研究布局于光伏电站的STATCOM-BESS附加基于粒子群算法的自抗扰控制器（PSO-ADRC）,以提高并网大系统的稳定性。分析了自抗扰控制器原理,推导了STATCOM-BESS附加控制器增强动态稳定性的策略,设计了基于粒子群算法的自抗扰控制器,仿真验证了STATCOM-BESS附加控制器的阻尼振荡作用。

关键词: 光伏电站, STATCOM-BESS, 粒子群算法, 自抗扰控制, 能源互联网, 可再生能源, 碳中和

Abstract:

To set up modern energy system in the context of carbon neutrality,power grid should consume more renewable energy,for example,solar energy.In order to improve the dynamic frequency support and transient voltage stability of the power grid connection system congregated distributed PV power stations,static synchronous compensators（STATCOM-BESS）have been widely deployed in PV stations due to their fast response.The damping controller with STATCOM-BESS can suppress the power oscillation of the system.In this context,to improve the stability of the grid connection system,STATCOM-BESS with particle swarm optimized active disturbance rejection controller（PSO-ADRC）for PV power stations is studied.Firstly,the ADRC is analyzed.Then,a STATCOM-BESS integrated with dynamic stability strategy is deduced,and a STATCOM-BESS with PSO-ADRC is designed,whose damping effect is verified by a simulation test.

Key words: PV power plant, STATCOM-BESS, particle swarm algorithm, ADRC, energy internet, renewable energy, carbon neutrality

中图分类号:

TK251

刘会强, 慕腾, 邢华栋, 武海燕, 刘建强, 雷轲, 郭琪. 基于解耦自抗扰控制的光伏并网稳定研究及应用[J]. 华电技术, 2021, 43(8): 11-19.

LIU Huiqiang, MU Teng, XING Huadong, WU Haiyan, LIU Jianqiang, LEI Ke, GUO Qi. Research on PV power grid connection stability based on decoupled active disturbance rejection control[J]. Huadian Technology, 2021, 43(8): 11-19.

图/表 17

图1

图2

图3

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图5

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图7

图8

表1

表2

STATCOM-BESS参数

参数	值
额定补偿容量/（kV·A）	200
STATCO开关频率/kHz	6.4
DC/DC开关频率/kHz	10
连接电感/mH	3
电阻/Ω	0.05
直流侧电容/ $μF$	4 700
DC/DC储能电感/mH	2
蓄电池电压/V	20×12

表2

图9

图10

图11

图12

图13

图14

图15

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参数	值
电池方阵数/个	38
直流功率/kW	4 590
交流功率/kW	3 812
逆变器型号	Xantrex PV-150
逆变器数量/台	38
逆变器额定容量/（kV·A）	157
变压器数量/台	12
变压器功率/（kV·A）	500
变换电压/V	480.0/34.5