Minimum resource multi-microgrid black start driven by networked inverters

Abstract

A method and a corresponding system for performing a black start in a power system. The method (200) includes starting (100) a first anchored netting inverter (122) in a first microgrid (110), and starting (100) a second anchored netting inverter (122) in a second microgrid (120). The first microgrid (110) is connected to the first bus (118) and the second microgrid (120) is connected to the second bus (128). The method includes measuring (202) a first voltage of the first bus (118) and measuring a second voltage of the second bus (128), determining (204) a voltage difference between the first bus (118) and the second bus (128), and determining (204) whether the voltage difference is within a voltage difference threshold (350). The method includes measuring (206) a first phase angle of the first bus (118) and measuring a second phase angle of the second bus (128), determining (208) a phase angle difference between the first bus (118) and the second bus (128), and determining (208) whether the phase angle difference is within a phase angle difference threshold (360). The method includes operably connecting (212) the first bus (118) to the second bus (128) when the voltage difference is within a voltage difference threshold (350) and the phase angle difference is within a phase angle difference threshold (360).

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