Research on Grid-Connected Photovoltaic System Control Based on Virtual Synchronous Generator

doi:10.11985/2018.12.004

Abstract

Abstract:

As the new photovoltaic energy access to the power grid through the power electronic interface, the power system, which was originally dominated by the synchronous generator, is transformed into a high frequency power electronic power system. In view of the problem that large scale photovoltaic power grid connected to the power grid leads to the smaller inertia moment of power system, the control strategy of the virtual synchronous generator is adopted in the bipolar three-phase grid system. The simulation results in Matlab/Simulink show that the PV grid system with the control strategy of virtual synchronizer can simulate the inertia and frequency modulation characteristics of the traditional synchronizer.

Key words: Grid-connected photovoltaic, virtual synchronous generator, inertia, frequency modulation

CLC Number:

TM615

Bao Guangqing,Tan Hongtao,Ding Kun,Wang Ningbo,Gao Pengfei. Research on Grid-Connected Photovoltaic System Control Based on Virtual Synchronous Generator[J]. Journal of Electrical Engineering, 2018, 13(12): 19-23.

Figures/Tables 10

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References 11

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主要参数	数值
额定有功功率/kW	20
额定无功功率/var	0
直流电压/V	800
额定电压/V	380
额定频率/Hz	50
开关频率/Hz	10
滤波电感及电容/mH,μF	3,10
电网电感/mH	2
发电机调差系数	0.000 2

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