Aquavoltaic system and aquavoltaic method applied to the same

An aquavoltaic method applied to an aquavoltaic system, wherein the aquavoltaic system comprises:

• a fish pool;
• a photovoltaic power generation assembly, configured to supply power to a power-consuming device in the fish pool;
• and a power storage assembly, configured to receive and store excessive electric energy from the photovoltaic power generation assembly,
• wherein the power-consuming device comprises at least a detection unit that is arranged in the fish pool and configured to detect a water quality parameter of the fish pool, a water quality regulating unit configured to regulate water quality in the fish pool, and a power regulator configured to regulate a power of the water quality regulating unit;
• and
• an electric energy output end of the photovoltaic power generation assembly is connected to an electric energy input end of the power-consuming device via a first circuit, the electric energy output end of the photovoltaic power generation assembly is connected to an electric energy input end of the power storage assembly via a third circuit, the electric energy input end of the power-consuming device is connected to an electric energy output end of the power storage assembly via a fifth circuit, the third circuit is provided with a third switch configured to control on and off of the third circuit, and the fifth circuit is provided with a fifth switch configured to control on and off of the fifth circuit, the electric energy output end of the photovoltaic power generation assembly is connected to an electric energy input end of an external power grid via a second circuit, and the electric energy input end of the power-consuming device is connected to an electric energy output end of the external power grid via a fourth circuit;
• and the second circuit is provided with a second switch configured to control on and off of the second circuit, and the fourth circuit is provided with a fourth switch configured to control on and off of the fourth circuit,
• the aquavoltaic method comprising:
• when an amount of power consumed by the power-consuming device is not greater than an amount of power generated by the photovoltaic power generation assembly:
• in a case that the power storage assembly has a remaining capacity, the power-consuming device is supplied with power by using the first circuit, and the power storage assembly is charged by using the third circuit, and after the power storage assembly is full, remaining power is transmitted to the external power grid by using the second circuit;
• in a case that the power storage assembly is in a full state, the power-consuming device is supplied with power by using the first circuit, and the remaining power is transmitted to the external power grid by using the second circuit;
• and
• when the amount of power consumed by the power-consuming device is greater than the amount of power generated by the photovoltaic power generation assembly:
• in a case that a sum of the amount of power generated by the photovoltaic power generation assembly and an amount of power stored by the power storage assembly is not less than the amount of power consumed by the power-consuming device, the power-consuming device is supplied with power by using the first circuit and the fifth circuit;
• in a case that the sum of the amount of power generated by the photovoltaic power generation assembly and the amount of power stored by the power storage assembly is less than the amount of power consumed by the power-consuming device, the power-consuming device is supplied with power by using at least one of the first circuit and the fifth circuit, and the fourth circuit jointly or the power-consuming device is supplied with power separately by using the fourth circuit.