Photovoltaic generation site construction method
View Patent ↗To provide a solar power generation site construction method enabling a great improvement in power generation efficiency through effectively utilizing a space of a power generation site with an irregular planar shape. A solar module 7 is configured by arranging a plurality of solar cell groups, each including a plurality of solar cells. A plurality of types of unit modules are prepared including a one-unit module 7 −1 including one solar module, a reference unit module 7 −s including a plurality (N) of solar modules serving as a construction standard, and n-unit modules 7 −n including an arbitrary number (n), which falls between 2 and N−1, of solar modules. The solar modules 7 are densely laid in an area with a two-dimensional shape in top view of a field 35 of a power generation site, by combining the plurality of types of unit modules 7 −1 , 7 −S , 7 −n .
1 . A solar power generation site construction method for arranging solar modules in a construction area of a field, comprising:
preparing a plurality of solar cell groups, each comprising a plurality of solar cells and one cell group controller having a connection/disconnection function of each solar cell group and connected to an in-module parallel connection line;
preparing a plurality of solar modules, one solar module including a plurality of the solar cell groups and one optimizer;
preparing a plurality of reference module sets, each comprising a plurality (N) of the solar modules connected through the in-module parallel connection line, serving as a construction standard, and a plurality of n-module sets, each comprising an arbitrary number between 2 and N−1, of the solar modules connected through another in-module parallel connection line, each of the reference module sets and the n-module sets being connected to an inter-module parallel connection line through each of the optimizers; and
arranging a plurality of the reference module sets, a plurality of the n-module sets, and a plurality of the solar modules in the construction area according to a shape thereof,
wherein each of the cell group controllers monitors a power generation state of each of the solar cell groups, and when it is detected that a power generation amount in one solar cell group is lower than a predetermined threshold value, the cell group controller disconnects the one solar cell group from the in-module parallel connection line, and then when the power generation amount in the one solar cell group exceeds the threshold value, the one solar cell group is connected to the in-module parallel connection line, and
each of the optimizers disconnects each of the solar modules from the inter-module parallel connection line when an overall power generation amount of one solar module is detected to be no greater than a threshold value, and each of the optimizers disconnected is connected to the inter-module parallel connection line when the overall power generation amount of the solar module disconnected is detected to be greater than the threshold value.
2 . The solar power generation site construction method according to claim 1 , wherein the reference module sets are laid in a principal region in a central portion of the construction area with a two-dimensional shape; and
the solar cell groups and the n-module sets are laid in an empty space between an inner edge of the construction area and an outer edge of the reference module set in the construction area.
3 . The solar power generation site construction method according to claim 2 , wherein an installation angle of each of the solar cells installed in the construction area with the two-dimensional shape with respect to a horizontal plane is randomly set.
4 . The solar power generation site construction method according to claim 3 , wherein the installation angle of each of the solar cells in the solar cell groups, the reference module set and/or the n-module set is randomly set.
5 . The solar power generation site construction method according to claim 3 , wherein the installation angle of each of the solar cells in the reference module set and the n-module set installed in the construction area with the two-dimensional shape with respect to the horizontal plane is randomly set.
6 . The solar power generation site construction method according to claim 3 , wherein the installation angle of the solar cells with respect to the horizontal plane is any one of a tilt angle of a reference plane oriented in a solar light radiation direction and a tilt angle of an arbitrary plane tilted with respect to the reference plane.
7 . The solar power generation site construction method according to claim 1 , wherein the reference module sets are laid in the construction area with a two-dimensional shape for a number the reference module sets can be laid; and
the n-module sets and the solar cell groups are laid in an empty space between an inner edge of the construction area and an outer edge of the reference module set in the construction area.
8 . The solar power generation side construction method according to claim 1 , further comprising: arranging further a junction box having a power/data separator connected to the optimizers through the inter-solar-module connection line;
a power conditioner connected to the power/data separator and outputting power from the power/data separator to a grid line;
a relay terminal connected to the power/data separator and collecting data of the cell group controllers separated at the power/data separator to accumulate data of the optimizers;
a remote terminal installed at an integrated management site at a remote site; and
a server that includes a communication control device and carries out an upload/download process of management/control data via a public telecommunication network between the relay terminal and the remote terminal.