CN106208132A - A kind of water power photovoltaic integrated operated type micro-grid system - Google Patents

Abstract

The invention discloses a hydropower photovoltaic integrated power supply type microgrid system, which includes a solar panel assembly, a microgrid distribution box for integrating photovoltaic power generation and hydropower generation, a hydropower energy storage reservoir, a hydropower energy storage electric pump, and a microgrid The grid hydroelectric generator; also includes a hydropower supply line for transmitting the electric energy of the micro grid hydroelectric generator to the micro grid distribution box, and for transmitting the excess photovoltaic power generation of the solar panel assembly to The micro-grid power storage line of the hydraulic energy storage electric pump is connected to the micro-grid power distribution box. In the present invention, by combining the photovoltaic power generation micro-grid system with hydropower energy storage, the excess photovoltaic power generation can be stored in the form of potential energy, and the photovoltaic power generation can be supplemented by hydropower to improve the stability of photovoltaic power supply, which can significantly improve Power supply stability and storage cost of photovoltaic power generation microgrid system.

Description

A hydropower photovoltaic integrated power supply microgrid system

technical field

The invention relates to the technical field of a photovoltaic microgrid system, in particular to a hydropower photovoltaic integrated power supply microgrid system.

Background technique

The definition of microgrid in my country is: microgrid is based on distributed power sources, using energy storage and control devices for real-time adjustment, and realizes the power supply network of internal power balance in the network. It can be connected to the grid or run independently off the grid. Microgrid utilizes primary energy, uses micro power sources, is usually equipped with energy storage devices, and uses power electronic devices for energy regulation. It is a small system that provides power according to user needs. It is usually composed of loads and micro power sources, which can provide power at the same time. and heat. The power supply inside the microgrid is mainly responsible for energy conversion by power electronic devices and provides necessary control; the microgrid is a single controlled unit compared to the main grid, and can meet the user's needs for reliable and safe power supply at the same time. There are three types of microgrids: uncontrollable, partially controllable and fully controllable.

Renewable energy includes solar energy, wind energy, water energy, biomass energy, geothermal energy and ocean energy, etc., with great resource potential, low environmental pollution, and sustainable use. It is an important energy that is conducive to the harmonious development of man and nature. Among renewable energy sources, solar energy and wind energy are particularly universal, safe and practical, among which solar energy is an inexhaustible renewable energy source for human beings, which is fully clean, absolutely safe, relatively extensive, abundant in resources, economic A series of outstanding advantages such as practicality, long life and maintenance-free. Especially in China, solar energy is the renewable energy with the most abundant total reserves. The theoretical estimated value of solar radiation energy received by China's land every year is 1.47× ¹⁰ . renewable energy.

In the prior art photovoltaic microgrid system for residential electricity, in order to deal with the problem of unstable power supply of photovoltaic power generation, energy storage batteries are usually used for energy storage. On the one hand, the storage capacity of energy storage batteries is limited and the use cost is high. On the one hand, using energy storage batteries for energy storage is not convenient for grid connection and ensuring the quality of power supply current.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides a hydropower photovoltaic integrated power supply microgrid system, which combines the photovoltaic power generation microgrid system with hydropower energy storage to improve the power supply stability and power storage of the photovoltaic power generation microgrid system cost.

The technical solution adopted by the present invention to solve its technical problems is:

A hydroelectric photovoltaic integrated power supply microgrid system, including solar panel components for receiving sunlight for photovoltaic power generation, microgrid distribution boxes for integrating photovoltaic power generation and hydroelectric power generation, and hydroelectric energy storage for accumulating hydraulic potential energy A water storage tank, a hydraulic energy storage electric pump for pumping water with low potential energy into the hydroelectric energy storage storage tank, and a micro pump for converting the gravitational potential energy in the hydroelectric energy storage storage tank into electrical energy Grid hydroelectric generator; also includes a hydraulic power supply line for delivering the electric energy of the microgrid hydroelectric generator to the microgrid distribution box, and for delivering excess photovoltaic power generation of the solar panel assembly to The micro-grid power storage line of the hydraulic energy storage electric pump is connected to the micro-grid power distribution box.

As a further improvement of the above technical solution, it also includes a photovoltaic power generation access box for collecting the power generated by the solar panel assembly, and a photovoltaic power generation inverter for converting the direct current output by the solar panel assembly into alternating current The photovoltaic power generation access box is connected to the solar panel assembly, the photovoltaic power generation inverter is connected to the photovoltaic power generation access box, and the microgrid distribution box is connected to the photovoltaic power generation inverter.

As a further improvement of the above technical solution, the solar panel assembly includes several solar panel monomers and a photovoltaic array support for installing the solar panel monomers; the photovoltaic power generation access box includes A DC combiner box for collecting the power generated by several solar cell panels, and a DC power distribution cabinet for inputting the electricity collected by the DC combiner box to the photovoltaic power generation inverter.

As a further improvement of the above technical solution, it also includes residential electrical equipment, residential electrical internal circuits for supplying power to the residential electrical equipment, and electrical power for current monitoring of the residential electrical internal circuits. A monitor, the residential electrical equipment is connected in parallel to the internal circuit of the residential electricity, and the electrical power monitor is connected to the microgrid distribution box.

Compared with prior art, the beneficial effect of the present invention is:

The hydropower photovoltaic integrated power supply microgrid system provided by the present invention can store excess photovoltaic power generation in the form of potential energy by combining the photovoltaic power generation microgrid system with hydropower energy storage, and carry out photovoltaic power generation through hydropower Supplementing to improve the stability of photovoltaic power supply can significantly improve the power supply stability and storage cost of photovoltaic power generation microgrid system.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic structural diagram of a hydroelectric photovoltaic integrated power supply microgrid system according to the present invention.

detailed description

Referring to FIG. 1, FIG. 1 is a schematic structural view of a specific embodiment of the present invention.

As shown in Figure 1, a hydropower photovoltaic integrated power supply microgrid system includes a solar panel assembly 1 for receiving sunlight for photovoltaic power generation, a microgrid distribution box 4 for integrating photovoltaic power generation and hydropower generation, and A hydroelectric energy storage reservoir 7 for accumulating hydraulic potential energy, a hydraulic energy storage electric pump 5 for pumping water with low potential energy into the hydroelectric energy storage reservoir 7, and a hydroelectric energy storage electric pump 5 for storing the hydroelectric energy storage The gravitational potential energy in the pool 7 is converted into a micro-grid hydroelectric generator 6 of electric energy; it also includes a hydraulic power supply line 9 for delivering the electric energy of the micro-grid hydroelectric generator 6 to the micro-grid distribution box 4, and The micro-grid power storage line 8 used to transfer the excess photovoltaic power generation of the solar panel assembly 1 to the hydraulic energy storage electric pump 5, and the micro-grid power storage line 8 is connected to the micro-grid power distribution box 4 .

Further, it also includes a photovoltaic power generation access box 2 for collecting the power generated by the solar panel assembly 1, and a photovoltaic power generation inverter 3 for converting the direct current output by the solar panel assembly 1 into alternating current, The photovoltaic power generation access box 2 is connected to the solar panel assembly 1, the photovoltaic power generation inverter 3 is connected to the photovoltaic power generation access box 2, and the micro grid distribution box 4 is connected to the photovoltaic power generation inverter Device 3. It also includes residential electrical equipment 12, a residential electrical internal circuit 10 for supplying power to the residential electrical equipment 12, and an electrical power monitor 11 for current monitoring of the residential electrical internal circuit 10, The residential electrical equipment 12 is connected in parallel to the internal circuit 10 of residential electricity, and the electrical power monitor 11 is connected to the microgrid distribution box 4 .

Specifically, the solar panel assembly 1 includes several solar panel monomers and a photovoltaic array support for installing the solar panel monomers; the photovoltaic power generation access box 2 includes a A DC combiner box for the power generated by the individual solar panels, and a DC power distribution cabinet for inputting the electricity collected by the DC combiner box to the photovoltaic power generation inverter 3 .

When the solar panel assembly 1 is working, the amount of photovoltaic power generation is transmitted to the micro-grid distribution box 4 through the photovoltaic power generation access box 2 and the photovoltaic power generation inverter 3, and the micro-grid distribution box 4 Supplying power to the residential electrical equipment 12, the electrical power monitor 11 monitors the total electrical power of the residential electrical equipment 12 in real time, when the total electrical power of the residential electrical equipment 12 is greater than the solar battery When the power generation capacity of the panel assembly 1, the micro-grid distribution box 4 is connected to the micro-grid hydroelectric generator 6 through the hydraulic power supply line 9, and the micro-grid hydroelectric generator 6 starts to work to provide electric energy for supplement ; When the total power consumption of the residential electrical equipment 12 is less than the power generation of the solar panel assembly 1, the micro-grid distribution box 4 is connected to the hydraulic energy storage through the micro-grid power storage line 8 Electric pump 5, and the hydraulic energy storage electric pump 5 starts to work to convert excess photovoltaic power generation into hydraulic potential energy for storage.

The preferred implementation of the present invention has been described in detail above. Of course, the present invention can also adopt different forms from the above-mentioned embodiments. Those skilled in the art can make equivalent transformations or corresponding equivalents without violating the spirit of the present invention. Any changes should fall within the protection scope of the present invention.

Claims (4)

1. a water power photovoltaic integrated operated type micro-grid system, it is characterised in that: include carrying out for accepting sunlight The solar cell panel assembly (1) of photovoltaic generation, it is used for integrating photovoltaic generation and hydroelectric micro-capacitance sensor distribution box (4), using In the water power power usable storage pond (7) of savings hydraulic potential, for the water of low-potential energy is pumped to described water power power usable storage pond (7) In hydraulic energy storage electrodynamic pump (5) and for being electric energy by the transform gravitational energy in described water power power usable storage pond (7) Micro-capacitance sensor hydroelectric generator (6)；Also include for the electric energy of described micro-capacitance sensor hydroelectric generator (6) is delivered to described micro-capacitance sensor The waterpower supply line (9) of distribution box (4) and for by photovoltaic power generation quantity unnecessary for described solar cell panel assembly (1) Being delivered to micro-capacitance sensor electric power storage circuit (8) of described hydraulic energy storage electrodynamic pump (5), described micro-capacitance sensor electric power storage circuit (8) connects described Micro-capacitance sensor distribution box (4).

A kind of water power photovoltaic integrated operated type micro-grid system the most according to claim 1, it is characterised in that: also include using In collecting the photovoltaic generation access case (2) of described solar cell panel assembly (1) generated energy and for by described solar-electricity The unidirectional current that pond board component (1) exports is converted to the photovoltaic inversion device (3) of alternating current, described photovoltaic generation access case (2) Connecting described solar cell panel assembly (1), described photovoltaic inversion device (3) connects described photovoltaic generation access case (2), institute State micro-capacitance sensor distribution box (4) and connect described photovoltaic inversion device (3).

A kind of water power photovoltaic integrated operated type micro-grid system the most according to claim 2, it is characterised in that: the described sun Several solar panel monomers can be included and for installing described solar panel monomer by battery panel components (1) Photovoltaic arrays support；Described photovoltaic generation access case (2) includes for collecting sending out of several described solar panel monomers The direct current conflux case of electricity and the electricity for being collected by described direct current conflux case input to described photovoltaic inversion device (3) DC power distribution cabinet.

A kind of water power photovoltaic integrated operated type micro-grid system the most according to claim 1, it is characterised in that: also include occupying People's electrical equipment (12), for residential electricity consumption internal wiring (10) that described residential electricity consumption equipment (12) is powered and For described residential electricity consumption internal wiring (10) carries out the electric power monitor (11) of current monitoring, described residential electricity consumption sets Standby (12) are connected in parallel on described residential electricity consumption internal wiring (10), and described electric power monitor (11) connects described micro-electricity Net distribution box (4).