The invention discloses a photovoltaic installation
system, which comprises an A-type photovoltaic module column formed by connecting at least two A-type photovoltaic modules in series, and a B-type photovoltaic module column formed by connecting at least two B-type photovoltaic modules in series, wherein the A-type photovoltaic module column and the B-type photovoltaic module column are connectedin series and are arranged on a mounting
base plane in an alternating
parallel arrangement structure, the A-type photovoltaic module column comprises an A-type positive
electrode output end located at one end and an A-type negative
electrode output end located at the other end, the B-type photovoltaic module column comprises a B-type positive
electrode output end located at one end and a B-type negative electrode output end located at the other end, the A-type positive electrode output end and the B-type negative electrode output end are located at the same end, the A-type negative electrodeoutput end and the B-type positive electrode output end are located at the same end, and the A-type negative electrode output end is electrically connected with the B-type positive electrode output end of the adjacent B-type photovoltaic module column through a cable connector. According to the invention, the wiring structure of a long
direct current cable thread is effectively avoided, and the
line loss of a photovoltaic installation
system is obviously reduced.