Photovoltaic surplus power auxiliary heating type solar water heater

Abstract

The invention discloses a photovoltaic surplus power auxiliary heating type solar water heater which comprises a photo-thermal system and a photovoltaic system. The photo-thermal system comprises a solar thermal collector and a solar water heating tank which are communicated through a pipeline. The photovoltaic system comprises a solar photovoltaic panel, a photovoltaic inverter, a power-provided control type electronic controller and an electric heating type electronic controller. The solar photovoltaic panel is electrically connected with the photovoltaic inverter which is electrically connected with the electric heating type electronic controller and the power-provided control type electronic controller. The electric heating type electronic controller and the power-provided control type electronic controller are electrically connected. An electric heating function hole is formed in the solar water heating tank, and the power-provided control type electronic controller is arranged on the electric heating function hole. The photovoltaic surplus power heat assisting type solar water heater can effectively balance photovoltaic power output, the auxiliary heating purpose of the photo-thermal system can be achieved, electric power generated by the photovoltaic system can be stably output into a power grid in balance, and impact of photovoltaic electricity to the power grid is avoided.

Description

technical field [0001] The invention relates to a photovoltaic residual power auxiliary heating type solar water heater, which belongs to the field of comprehensive utilization of solar energy heating. Background technique [0002] Solar energy is inexhaustible and inexhaustible. It is a widely distributed clean energy and can be developed and utilized locally. Although the efficiency of photovoltaic power generation is relatively low, compared with other energy sources, electric energy is a high-grade secondary energy source with a wide range of applications. Among them, the most prominent application is the household grid-connected photovoltaic system, which is usually connected in parallel with the grid. The electricity generated by the photovoltaic array is used by household appliances, and the excess electricity is input into the grid. At night or in rainy days, when the power generated by the photovoltaic array is insufficient, the grid supplies power to household app...

AI Technical Summary

Problems solved by technology

This kind of photovoltaic system has many advantages, but there are also shortcomings. First, the access of a large number of distributed power sources makes the transformation of the distribution network and pipelines more complicated, and the grid connection and the grid connection of power transmission to the grid The method will cause voltage fluctuations and affect the configuration of relay protection, and photovoltaic power generation is generally connected to the grid through inverters. Frequent switching of such power electronic devices is prone to harmonic pollution

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