Development and Application of Power Network Simulation System for Grid Connected Photovoltaic (PV) Generation System Test

Abstract

In order to meet the need of photovoltaic power generation system testing, this paper presents a strategy for simulating grid fault, voltage and frequency fluctuations and other conditions, testing PV system grid connected adaptability and low voltage ride through capability. Main Topology of the control strategy using two PWM inverter units. By controlling the output voltage vector of two superimposed, analog grid frequency variation, voltage variation and harmonic power grid operating conditions. Control strategy according to the final prototype system was developed and applied to photovoltaic power generation field test, through practice verify the feasibility of the program.