Intelligent photovoltaic water-saving drip irrigation system

Abstract

In view of the deficiencies of the prior art, the invention provides an intelligent photovoltaic water-saving drip irrigation system. The system performs coupling on a photovoltaic water lifting system, a water storage power generation system, a drip irrigation system and a programmable logic controller (PLC) control system, and adopts a solar DC power supply mode; the supplied power is mainly used for driving a motor of a water pump, and the redundant power can also be output for use; the water pumped by the water pump is stored in a high level water storage tank; the water in the water storage tank is used as an irrigation water source; a water-wheel generator is installed at the water delivery side of the water storage tank, so that the electricity demand of the PLC control system underthe condition of no light can be met; the irrigation part adopts a method of underground drip irrigation; the stability and effectiveness of irrigation are guaranteed by means of a PLC controller. Compared with a traditional photovoltaic irrigation system, the photovoltaic drip irrigation system provided by the invention omits the use of an inverter and a storage battery, has the advantages of simple system structure, low operation and maintenance costs, high efficiency, energy saving and effective water conservation, and realizes the need for water-saving irrigation in the area lacking waterand electricity at the same time.

Description

technical field [0001] The invention relates to a drip irrigation system, in particular to an energy-efficient and intelligent water-saving drip irrigation system capable of comprehensively utilizing solar energy and water potential energy, which belongs to the field of solar photovoltaic utilization. Background technique [0002] Affected by geographical location, Northwest my country is rich in solar energy resources. Most areas belong to the first and second types of areas. As an inexhaustible clean and renewable energy, solar energy is different from coal, oil, etc Compared with nuclear energy, fossil energy has the incomparable advantages of conventional energy such as universal, pollution-free, and sustainable. But at the same time, due to the inland location of Northwest China, the climate in most areas is arid, with little rainfall and severe shortage of water resources. In addition, considering the situation of many large-scale agricultural planting areas in Northwe...

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide an intelligent photovoltaic water-saving drip irrigation system, which can couple the photovoltaic water lifting system, water storage power generation system, drip irrigation system and PLC control system, and can Comprehensive utilization of water potential energy. Photovoltaic panels absorb solar energy to drive water pump motors and supply power to PLC control systems. Water storage tanks are used as sources of irrigation water while storing water potential energy. Hydrogenerators are used for weak or no light. Under certain conditions, the potential energy of water is converted into electric energy, which supplies power for the PLC control system. The PLC controller is used to start and stop the water pump, monitor the water level of the water tank, control the distribution of irrigation water and the amount of fertilization, improve the energy utilization rate of the system and ensure irrigation. The uniformity and effectiveness of the whole system can solve the irrigation problem in areas with little water and electricity or near water sources but need independent power generation, and solar water supply systems without batteries and inverters cannot be used without sunlight question

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