Black-Start Control Strategy for Photovoltaic-Storage Microgrid Based on Improved Micro-Source Voltage and Virtual Synchronous Generator

doi:10.16628/j.cnki.2095-8188.2025.10.004

Abstract

Abstract:

In order to promote new energy to replace traditional hydropower and gas units as black-start power sources, a black-start control strategy for photovoltaic-storage microgrid based on improved micro-source voltage and virtual synchronous generator is proposed.Firstly, by adjusting the no-load voltage amplitude of the droop curve and limiting the boost time, the inrush current caused by the saturation of the transformer flux is avoided.Then, the virtual synchronous generator control is introduced into the photovoltaic inverter to simulate the characteristics of the traditional synchronous generator and improve the stability of the photovoltaic system.Finally, the simulation model of photovoltaic-storage microgrid is built and analyzed in MATLAB/Simulink.The results show that the improved voltage control can avoid the bus inrush current and establish a stable voltage.The virtual synchronous control enhances the support of the photovoltaic system to external fluctuations.The proposed control strategy meets the requirements of the whole process of black-start.

Key words: photovoltaic-storage microgrid, black-start, droop control, virtual synchronous generator(VSG) control, control strategy

CLC Number:

TM615

DUAN Ketong, HAN Zijiao, DONG Yannan, CAI Zhiyuan. Black-Start Control Strategy for Photovoltaic-Storage Microgrid Based on Improved Micro-Source Voltage and Virtual Synchronous Generator[J]. LOW VOLTAGE APPARATUS, 2025, 0(10): 28-36.

Figures/Tables 19

References 20

[1]	顾雪平, 白岩松, 李少岩, 等. 电力系统黑启动恢复问题的研究评述[J]. 电工技术学报, 2022, 37(13):3183-3200.
[2]	CAPIK M, OSMAN Y, CAVUSOGLU I. Hydropower for sustainable energy development in turkey:The small hydropower case of the eastern black sea region[J]. Renewable and Sustainable Energy Reviews, 2012, 16(8):6160-6172. doi: 10.1016/j.rser.2012.06.005
[3]	朱凌燕, 潘再平, 许国东. 采用改进虚拟同步控制的双馈型风电场黑启动方案[J]. 太阳能学报, 2021, 42(4):162-167.
[4]	El-ZONKOLY, MOHAMED A. Renewable energy sources for complete optimal power system black-start restoration[J]. IET Generation Transmission & Distribution, 2014, 9(6):531-539. doi: 10.1049/gtd2.v9.6
[5]	刘颖明, 陈亮, 王晓东, 等. 混合储能参与风电集群一次调频的容量配置优化[J]. 电器与能效管理技术, 2020(10):55-63.
[6]	白忠彬. 多尺度灵活性资源博弈下风电场储能容量优化[J]. 电器与能效管理技术, 2023(5):79-88.
[7]	朱琛, 郑峻峰, 方兴, 等. 提升暂态电压稳定控制的储能建模与调压控制策略研究[J]. 电器与能效管理术, 2023(9):11-17.
[8]	石荣亮, 张兴, 刘芳, 等. 基于虚拟同步发电机的孤立微网黑启动方案研究[J]. 太阳能学报, 2017, 38(10):2857-2864.
[9]	孟强, 牟龙华, 许旭锋, 等. 孤立微电网的黑启动策略[J]. 电力自动化设备, 2014, 34(3):59-64.
[10]	黄杏, 金新民, 马琳. 微网离网黑启动优化控制方案[J]. 电工技术学报, 2013, 28(4):182-190.
[11]	李翠萍, 王艺茗, 李军徽, 等. 基于多储能动态调控的光储黑启动控制策略[J]. 太阳能学报, 2024, 45(9):611-622.
[12]	李旭, 罗嘉, 丁勇, 等. 辅助重型燃气轮机黑启动的大容量储能系统控制技术及其应用[J]. 中国电机工程学报, 2022, 42(3):1069-1081.
[13]	卫程超, 赵晋斌, 曾志伟, 等. 光伏波动下低压直流系统功率振荡抑制研究[J]. 电力系统保护与控制, 2023, 51(5):128-138.
[14]	张英敏, 张婉欣, 李保宏, 等. 基于光储联合系统的电网分段恢复策略[J]. 电力工程技术, 2024, 43(4):26-35.
[15]	ZHONG Q, WEISS G. Synchronverters:Inverters that mimic synchronous generators[J]. IEEE Transactions on Industrial Electronics, 2010, 58(4):1259-1267. doi: 10.1109/TIE.2010.2048839
[16]	孟建辉, 石新春, 王毅, 等. 改善微电网频率稳定性的分布式逆变电源控制策略[J]. 电工技术学报, 2015, 30(4):70-79.
[17]	王振雄, 易皓, 卓放, 等. 应用于光伏微网的一种虚拟同步发电机结构及其动态性能分析[J]. 中国电机工程学报, 2017, 37(2):444-454.
[18]	付华, 刘公权, 齐晨飞, 等. 计及微电网黑启动的虚拟同步发电机调频策略[J]. 电力系统保护与控制, 2020, 48(14):59-68.
[19]	渠展展, 杨若奂, 牛萌, 等. 基于积分反馈频率无差控制的构网型储能黑启动频率稳定提升研究[J]. 电器与能效管理技术, 2024(11):20-28.
[20]	蒋向兵, 汤波, 余光正, 等. 面向新能源就地消纳的园区储能与电价协调优化方法[J]. 电力系统自动化, 2022, 46(5):51-64.

储能系统参数	数值
储能容量/Ah	50
直流侧电压/V	700

光伏系统参数	数值
额定功率/W	15 000
直流侧电压/V	800
阻尼系数/(N·m·s·rad^-1)	2
惯性系数/(kg·m²)	2.5

黑启动阶段	电压波动/p.u.	频率波动/Hz
储能系统孤岛	1.005	49.997~50.028
光伏系统并网	1.005	49.981~50.013
系统负载投入	1.006	49.994~50.002