Fuel supply system of combustion test stand of gas turbine

The invention provides a fuel supply system of a gas turbine combustion test bed, which comprises a fuel main path, a plurality of fuel branches, a replacement gas loop, a purging loop, a diffusing loop and the gas turbine combustion test bed, and is characterized in that the fuel main path is connected with the plurality of fuel branches; the plurality of fuel branches are respectively connected with respective corresponding gas turbine combustion test beds, the replacement gas loop is respectively connected with the fuel main path, the plurality of fuel branches and the gas turbine combustion test beds, the purging loop is connected with the gas turbine combustion test beds, and the diffusing loop is respectively connected with the fuel main path and the plurality of fuel branches. Based on a plurality of functional branches in the fuel supply system of the gas turbine combustion test bed, stable operation of the gas turbine combustion test bed under working condition parameters of different gas turbines is