Photovoltaic generation system, wiring apparatus for photovoltaic generation system, and wiring structure therefor

A wiring structure for a photovoltaic generation system, including wiring apparatuses for conducting respective outputs of a plurality of generating sections each including photovoltaic modules located outside a building to loads in the building, each wiring apparatus comprising:

• a trunk cable including a trunk conductor for conducting the respective outputs of the generating sections,
• a plurality of branch cables diverging individually from a plurality of longitudinally intermediate portions of the trunk cable, each branch cable including a branch conductor having one end connected electrically to a longitudinally intermediate portion of the trunk conductor and the other end connected electrically to the output terminal of each corresponding generating section,
• branch junctions formed between the trunk cable and the branch cables, and
• a plurality of connectors each attached to an end of the trunk cable or a branch cable and adapted to be removably fitted with a connector of an auxiliary cable and used for connecting the trunk cable and/or the branch cables with corresponding auxiliary cables;
• wherein the respective output terminals of the generating sections are connected individually by means of the wiring apparatuses and either the trunk cable or lead-in wires connected thereto are led into the building.

A wiring apparatus for a photovoltaic generation system for connecting respective output terminals of a plurality of generating sections each including photovoltaic modules, the wiring apparatus comprising:

• a trunk cable including a trunk conductor for conducting respective outputs of the generating sections;
• a plurality of branch cables diverging individually from a plurality of longitudinally intermediate portions of the trunk cable, each branch cable including a branch conductor having one end connected electrically to a longitudinally intermediate portion of the trunk conductor and the other end connected electrically to the output terminal of each corresponding generating section;
• and
• branch junctions formed between the trunk cable and the branch cables, each including a circuit changing switch capable of switching the connection between the generating sections to either a series- or a parallel-connection mode.

A wiring structure for a photovoltaic generation system, including wiring apparatuses for conducting respective outputs of a plurality of generating sections each including photovoltaic modules located outside a building to loads in the building, each wiring apparatus comprising:

• a trunk cable including a trunk conductor for conducting the respective outputs of the generating sections,
• a plurality of branch cables diverging individually from a plurality of longitudinally intermediate portions of the trunk cable, each branch cable including a branch conductor having one end connected electrically to a longitudinally intermediate portion of the trunk conductor and the other end connected electrically to the output terminal of each corresponding generating section, and
• branch junctions formed between the trunk cable and the branch cables, each including a circuit changing switch capable of switching the connection between the generating sections to either a series- or a parallel-connection mode;
• wherein the respective output terminals of the generating sections are connected individually by means of the wiring apparatuses, and either the trunk cable or lead-in wires connected thereto are led into the building.

A wiring apparatus for a photovoltaic generation system for connecting respective output terminals of a plurality of generating sections each including photovoltaic modules, the wiring apparatus comprising:

• a trunk cable including a trunk conductor for conducting the respective outputs of the generating sections;
• a plurality of branch cables diverging individually from a plurality of longitudinally intermediate portions of the trunk cable, each branch cable including a branch conductor having one end connected electrically to a longitudinally intermediate portion of the trunk conductor and the other end connected electrically to the output terminal of each corresponding generating section;
• and
• branch junctions formed between the trunk cable and the branch cables, each including an electric circuit for connecting the generating sections in parallel with one another, the electric circuit having a check diode for preventing current from flowing from higher-output generating sections, out of the parallel-connected generating sections, to lower-output generating sections.

A wiring structure for a photovoltaic generation system, including wiring apparatuses for conducting respective outputs of a plurality of generating sections each including photovoltaic modules located outside a building to loads in the building, each wiring apparatus comprising:

• a trunk cable including a trunk conductor for conducting the respective outputs of the generating sections,
• a plurality of branch cables diverging individually from a plurality of longitudinally intermediate portions of the trunk cable, each branch cable including a branch conductor having one end connected electrically to a longitudinally intermediate portion of the trunk conductor and the other end connected electrically to the output terminal of each corresponding generating section, and
• branch junctions formed between the trunk cable and the branch cables, each including an electric circuit for connecting the generating sections in parallel with one another, the electric circuit having a check diode for preventing current from flowing from higher-output generating sections, out of the parallel-connected generating sections, to lower-output generating sections;
• wherein the respective output terminals of the generating sections are connected individually by means of the wiring apparatuses, and either the trunk cable or lead-in wires connected thereto are led into the building.