A household photovoltaic power generation energy management system and method

Abstract

The invention discloses a domestic photovoltaic power generation energy management system and method. The domestic photovoltaic power generation energy management system comprises a photovoltaic battery, an inverter, a power grid and a load, wherein the photovoltaic battery converts solar energy into electric energy; and the inverter converts the instable direct current generated by the photovoltaic battery into an alternating current with a constant voltage to supply power for the power grid or the domestic load. For lowering electric charge of a user or the energy consumption of the power grid to be the minimum, a proper control method is needed, and a system which considers a power distribution way and domestic appliance planning at the same time is established therefor; meanwhile, by taking inconvenience of the user into consideration, a control method is obtained by balancing electric charge, electric energy consumption and inconvenience; the control method is obtained by solving a mixed integral type nonlinear planning problem; in addition, the electric charge and electric energy consumption can be reduced by the obtained control method, and management efficiency can be improved; and in addition, the system is simple, and the control method can achieve economic and environment benefits, so that the system and the method are beneficial to usage of the user.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic energy, and in particular relates to a household photovoltaic power generation energy management system and method. Background technique [0002] People's demand for energy continues to increase, and most of the energy comes from fossil fuels. Due to the waste gas produced by the combustion of fossil fuels, environmental problems have become increasingly prominent. In this regard, in order to reduce the use of fossil fuels, many measures have been taken, such as rational control of power distribution and increasing the proportion of renewable energy. On the one hand, we can use electricity more efficiently by controlling the flow of electricity; on the other hand, the introduction of renewable energy can further reduce the use of fossil fuels, because electricity can be provided by other energy sources. There are a variety of renewable energy in nature, such as wind energy, tidal energy, sol...

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Problems solved by technology

[0004] In order to solve the problem of the lack of effective use of solar energy in the current technology to reduce electricity bills and energy consumption, the present invention provides a household photovoltaic power generation energy management system and method to simultaneously consider the conditions of electricity bills, power consumption, and user inconvenience According to the power distribution plan, the control method can be adjusted according to the different requirements of users, and the goal of reducing electricity bills and electricity consumption can be achieved through the obtained control method

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