Study on Fault Characteristics of Transmission Line of Photovoltaic Power Station

Affected by the control strategies adopted by the inverter, the PV(PhotoVoltaic) power station output short circuit current after the transmission line fault has different characteristics from the traditional synchronous generator output short circuit current. Because of different voltage drops of power grid, the different control strategies under variable conditions are analyzed. And the characteristics of the current that flowing on PV power station side of the transmission line after different kinds of faults are analyzed based on the simulation model. And the differences brought by different control strategies that influent the fault characteristics are simulated. The results show that the characteristics of the fault current and voltage on transmission line are greatly influenced by the fault type, control strategies, voltage drops and the other conditions.