String type photovoltaic inverter system and electronic equipment

The invention provides a string type photovoltaic inverter system and electronic equipment, and the string type photovoltaic inverter system comprises n parallel level conversion circuits and a grid-connected power unit, wherein the outputs of the n level conversion circuits are connected in parallel and then are input into the grid-connected power unit, the circuit structures and functions of the first level conversion circuit to the n-th level conversion circuit are the same, and n is greater than or equal to 1; the specific structure of the first-path level conversion circuit comprises a first-path hybrid switch, a first-path lightning arrester combination, a first-path common mode inductor and a first-path level converter; a first-path photovoltaic input signal is a total input after multiple paths of sub-photovoltaic cell panels are converged, the first-path photovoltaic input signal is input into the first-path level conversion circuit, passes through the first-path hybrid switch, then is input into the