Module and system for controlling photovoltaic strings to perform domino-type automatic snow melting
Provided is a system for controlling photovoltaic strings to perform Domino-type automatic snow melting, including a controller, M photovoltaic strings and a photovoltaic power supply control module; the 1 st to (k−1) th photovoltaic strings supply power to the k th photovoltaic string, in response to the k th photovoltaic string being in a load mode, 2≤k≤M. The M photovoltaic strings are correspondingly connected to M photovoltaic interfaces of the photovoltaic power supply control module; the controller is connected to the photovoltaic power supply control module, and is configured to control the working state of the photovoltaic power supply control module.
1. A system for controlling photovoltaic strings to perform Domino-type automatic snow melting, comprising a controller, M photovoltaic strings and a photovoltaic power supply control module; wherein the photovoltaic power supply control module comprises M photovoltaic interfaces; the M photovoltaic strings are correspondingly connected to the M photovoltaic interfaces; wherein,
the photovoltaic power supply control module comprises at least Work State I and Work State II:
in Work State I, 1 st to M th photovoltaic strings are all in a power supply mode, and supply power to an external load;
in Work State II, 1 st to (k−1) th photovoltaic strings are all in a power supply mode in response to a k th photovoltaic string being in a load mode, and the 1 st to (k−1) th photovoltaic strings supply power to the k th photovoltaic string, 2≤k≤M; and
the controller is connected to the photovoltaic power supply control module, and is configured to control the working state of a photovoltaic power supply control module,
wherein in Work State II of the photovoltaic power supply control module, 2 nd to M th photovoltaic strings execute the load mode sequentially,
wherein a photovoltaic panel included in the 2 nd photovoltaic string to the M th photovoltaic string are all installed on the same inclined plane A,
wherein a photovoltaic panel included in the 1 st photovoltaic string is installed perpendicular to a ground.
2. The system according to claim 1 , wherein in Work State I of the photovoltaic power supply control module, the 1 st to M th photovoltaic strings are connected in series; in Work State II of the photovoltaic power supply control module, the 1 st to (k−1) th photovoltaic strings are connected in series, in response to the photovoltaic string connected to the k th photovoltaic interface being in the load mode.
3. The system according to claim 1 , wherein the number of photovoltaic panels included in the 2 nd photovoltaic string to the M th photovoltaic string increases sequentially.
4. The system according to claim 1 , wherein all photovoltaic panels on the inclined plane A are arranged in a matrix; and in a row of the photovoltaic panels in an inclined direction of the inclined plane A, a serial number of a photovoltaic string in which a photovoltaic panel is located lower is less than a serial number of a photovoltaic string in which a photovoltaic panel is located higher.
5. The system according to claim 1 , further comprising a power supply; wherein the power supply is connected to the photovoltaic power supply control module; in Work State II of the photovoltaic power supply control module, the power supply supplies power to the 1 st photovoltaic string, in response to the 1 st photovoltaic string being in the load mode.
6. The system according to claim 5 , wherein in Work State II of the photovoltaic power supply control module, the 1 st to M th photovoltaic strings execute the load mode sequentially.
7. The system according to claim 6 , wherein the power supply and the 1 st to (k−1) th photovoltaic strings all supply power to the k th photovoltaic string, in response to the k th photovoltaic string being in the load mode, 2≤k≤M.
8. The system according to claim 6 , wherein the number of photovoltaic panels included in the 1 st photovoltaic string to the M th photovoltaic string increases sequentially.