Solar energy generating system and control method of header box thereof

Abstract

The invention discloses a solar energy generating system and a control system of a header thereof. The solar energy generating system comprises solar energy array groups, the header box and a solar energy grid-connected inverter group. The header box is used for collecting generating voltage and current of the solar energy arrays, controlling the series-parallel connection mode among the solar energy arrays according to the parameters to reach the working voltage and current needed by the grid-connected inverter and selecting the number of the grid-connected inverters to be started or closed through the output voltage and the current of the header box per se so that each grid-connected inverter works under full power. In the solar energy generating system and the control system of the header box thereof, the header box is arranged between a plurality of solar energy arrays and the grid-connected inverters, the solar energy arrays and the grid-connected inverter group are controlled byreal time signals collected by the header box, the relation of connection among the solar energy array groups is changed under the conditions of rainy season and poor strong illumination, and a part of the grid-connected inverters are appropriately closed so as to ensure all of the working grid-connected inverters work under full power.

Description

technical field [0001] The invention relates to solar power generation technology, in particular to a solar power generation system and a control method thereof. Background technique [0002] Solar grid-connected power generation can reduce the pressure of the energy crisis, solve the power supply problem in power-scarce areas, alleviate the power shortage at peak times, and has many advantages such as environmental protection, easy installation, wide adaptation to regions, and no energy consumption. Therefore, solar grid-connected Power generation has become an important part of the long-term energy strategy supported by the governments of many countries in the world, and it is the development trend of new energy in the future. [0003] my country's solar grid-connected power generation has just started. Currently, the solar grid-connected power generation systems on the market adopt a one-to-one working method, that is, a solar array (such as a 10KWp solar array) can only ...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the present invention provides a control method for a solar power generation system and its combiner box that improves the working efficiency of a solar power station and effectively solves the problem that large-scale power stations cannot generate electricity in rainy seasons or when the light is not strong

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