Simulation Study on Output Characteristics of Photovoltaic Power Generation Under System Short-Circuit Fault

Various faults will occur in the power grid during operation, among which system short-circuit fault is most common. The introduction of photovoltaic has changed structure grid. no longer original single-source radial structure, but becomes a dual-end or multi-end grid, thus changing size, direction, and duration current. It helpful to study current output characteristics systems short circuit for Therefore, this paper builds grid-connected generator model on DigSILENT simulation tool circuit. models are simulated under different conditions three-phase circuit, two-phase single-phase Through analysis, it concluded that distributed generation with electronic interface related design control method an when occurs.