| CPC H02J 3/28 (2013.01) [H02S 50/10 (2014.12); H02J 2300/24 (2020.01)] | 6 Claims |
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1. A solar power equalization system, comprising:
a plurality of strings each having a plurality of solar panels connected to each other in series;
a connection board for collecting power from the plurality of strings connected to each other in parallel and delivering the power, and performing a function of a protective function of a power system;
an inverter for converting DC power generated using the solar panels into AC power and supplying the AC power to a consumer;
a measurement link device connected to each of the plurality of strings to minimize a power deviation between the strings; and
a power compensation device connected to the measurement link device to perform charging or discharging with respect to an output-reduced string among the plurality of strings,
wherein the measurement link device is configured to connect the output-reduced string to the power compensation device, which is configured as a device capable of fast charging and to be quickly charged with generated power from the output-reduced string,
wherein the measurement link device comprises:
a measurement part for measuring an output current or voltage of each of the strings;
a switching part for controlling connection between each of the strings and the power compensation device; and
a controller for controlling charging or discharging of the power compensation device,
wherein the controller comprises:
a power generation amount reduction determination module for detecting the output-reduced string,
a state-of-charge detection module for detecting an amount of power stored in the power compensation device;
a charging/discharging determination module for determining whether to perform charging or discharging depending on the amount of power stored in the power compensation device; and
a charging control module for connecting the output-reduced string to the power compensation device to charge the power compensation device when the power stored in the power compensation device is equal to or less than a set value,
wherein the charging control module comprises:
a charging connection module for disconnecting the output-reduced string from the connection board through the switching art and connecting the output-reduced string to the power compensation device; and
a fast charging module for quickly charging the power compensation device with the power generated by the output-reduced string.
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