METHOD FOR ACQUIRING LOW-VOLTAGE RIDE-THROUGH DATA OF PHOTOVOLTAIC POWER STATION

摘要

A method for acquiring low-voltage ride-through data of a photovoltaic power station comprises: grouping power generation units according to types of photovoltaic arrays, inverters and unit transformers; selecting tested power generation units from different groups according to geographical distribution condition of the power generation units, at least one tested power generation unit being selected from each group; establishing a power generation unit low-voltage ride-through test platform, and performing low-voltage ride-through testing on the tested power generation units; processing test data; establishing a power generation unit model according to the test data; establishing a power station detailed model according to actual distribution condition of the power generation units in the power station; setting multiple working conditions and low-voltage ride-through faults, and performing low-voltage fault simulation on the power station detailed model; and establishing a low-voltage ride-through database for the photovoltaic power station. The method combines advantages of field tests and model simulations, resolves the actual difficult problem in directly carrying out low-voltage ride-through tests for a photovoltaic power station, and also improves the precision and reliability of simulation results.