Zero-carbon building power distribution system based on multi-port electric energy router

Abstract

The invention relates to the technical field of new energy and intelligent power grids, in particular to a zero-carbon building power distribution system based on a multi-port electric energy router. Comprising a multi-port electric energy router, a wind power generation system, a photovoltaic power generation system, an alternating current power grid, a monitoring and dispatching system, an energy storage device, a power distribution center, a lighting system, household appliances, a charging pile system and a hot water supply system. Information of each module can be collected in real time and communication is carried out, so that on-site energy storage and efficient consumption of clean energy are ensured. The zero-carbon building power distribution system has the capability of feeding back to the power grid when electric power is surplus and the flexibility of quickly accessing to the power grid in an extreme emergency, and the zero-carbon building power distribution system which is suitable for being used at present and has the characteristics of an alternating-current and direct-current micro-grid is developed.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy and smart grid, and in particular to a zero-carbon building power distribution system based on a multi-port power router. Background Art

[0002] Zero-carbon buildings pursue zero carbon emissions by strengthening the energy-saving design of building envelopes and turning to renewable energy sources such as solar energy and wind energy, thereby achieving harmonious coexistence with the environment.

[0003] In the design of building power distribution systems, the photovoltaic storage direct current flexible system is a new concept that aims to improve the utilization rate of clean energy, reduce building energy consumption and help achieve zero-carbon goals through photovoltaic power generation, energy storage, DC power supply and flexible power consumption technology.

[0004] However, when implementing zero-carbon buildings, it is also necessary to take into account the building's energy consumption and normal electricity demand for office, testing, etc. Therefore, the power distribution system of zero-carbon buildings faces the challenge of limited photovoltaic power generation and multiple types of electricity demand. On the one hand, it is necessary to maximize photovoltaic power generation to meet the building's energy consumption; on the other hand, it is also necessary to ensure the normal operation of various electrical equipment inside the building, especially the power supply of AC equipment. This requires the distribution system to adapt to the efficient use of DC power supply and meet the power supply needs of AC equipment, which puts higher requirements on the design and implementation of the distribution system.

[0005] Based on the above reasons, the present invention designs a zero-carbon building power distribution system based on a multi-port power router, which comprehensively considers the coordination of photovoltaic, energy storage, DC and AC power supply, and flexibly dispatches energy based on the photovoltaic storage direct and flexible system to achieve optimal configuration and efficient utilization of energy, provide stable and reliable power supply for buildings, and achieve the goal of zero carbon emissions. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a zero-carbon building power distribution system based on a multi-port power router, which comprehensively considers the coordination of photovoltaic, energy storage, DC and AC power supply, and flexibly dispatches energy based on the photovoltaic storage direct and flexible system to achieve optimal configuration and efficient utilization of energy, provide stable and reliable power supply for buildings, and achieve the goal of zero carbon emissions.

[0007] In order to achieve the above-mentioned object, the present invention provides a zero-carbon building power distribution system based on a multi-port power router, including: a multi-port power router, wind power generation, photovoltaic power generation, AC power grid, monitoring and dispatching system, energy storage device, power distribution center, lighting system, household appliances, charging pile system and hot water supply system; The multi-port power router is connected to wind power generation, photovoltaic power generation, AC power grid, energy storage device, power distribution center and monitoring and dispatching system respectively; The distribution center includes DC distribution cabinets and 220V AC distribution cabinets. The DC distribution cabinets include 48V DC distribution cabinets or 375V DC distribution cabinets or 750V DC distribution cabinets. The 48V DC distribution cabinet is connected to the lighting system, the 375V DC distribution cabinet is connected to household appliances, the 750V DC distribution cabinet is connected to the charging pile system, and the 220V AC distribution cabinet is connected to the hot water supply system.

[0008] As the core of the system, the multi-port power router is responsible for receiving, converting and distributing power from wind power generation, photovoltaic power generation, AC power grid and energy storage devices, and realizing intelligent dispatching and distribution of the monitoring and dispatching system.

[0009] The multi-port power router has the functions of reactive power compensation, high and low voltage ride through and harmonic control.

[0010] Wind power generation includes at least one wind turbine, each of which is equipped with a wind turbine and a generator for converting wind energy into electrical energy; wind power generation has an intelligent control system for automatically adjusting the rotation speed and blade angle of the wind turbine according to wind speed and wind direction to maximize wind energy capture efficiency and electrical energy output.

[0011] Each wind turbine can be connected to the multi-port power router independently or in parallel.

[0012] Photovoltaic power generation includes multiple photovoltaic arrays with maximum power point tracking function, which is used to automatically adjust the working state according to the lighting conditions to maximize the photoelectric conversion efficiency. Each photovoltaic array is composed of multiple photovoltaic panels, and each photovoltaic array can be connected to a multi-port power router independently or in parallel.

[0013] The monitoring and dispatching system integrates data collection monitoring, energy dispatching and energy storage management. It is used to monitor the system status in real time, optimize power generation efficiency and electricity consumption forecast, and realize efficient on-site utilization of clean energy.

[0014] In an emergency, the monitoring and dispatching system can automatically connect to the power grid to ensure the stability of building power, and provide user-friendly monitoring, query, parameter setting and fault diagnosis services to enhance the operability and maintainability of the system.

[0015] The multi-port power router integrates multiple converters, including an AC / DC / AC converter module, an AC / DC converter module and a DC / AC converter module. The AC / DC / AC converter module is an AC / DC-DC / AC module.

[0016] The AC / DC / AC converter module is one of a full-bridge power module, a wind power converter module, a four-quadrant converter module or an energy storage inverter module.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes the efficient integration and flexible dispatch of clean energy such as wind energy and solar energy. Combined with advanced monitoring and dispatching systems, it can collect information from each module in real time and communicate, thereby ensuring the on-site storage and efficient consumption of clean energy. The present invention has the ability to feed back to the grid when there is surplus electricity, as well as the flexibility to quickly access the grid in extreme emergencies, and develops a zero-carbon building distribution system featuring "AC / DC microgrid" suitable for current use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a system structure diagram of the present invention.

[0019] Figure 2 It is the internal structure diagram of the present invention. DETAILED DESCRIPTION

[0020] The present invention will now be further described with reference to the accompanying drawings.

[0021] See also Figures 1-2 , this embodiment provides a zero-carbon building power distribution system based on a multi-port power router, including: a multi-port power router, a wind power generation, a photovoltaic power generation, an AC power grid, a monitoring and dispatching system, an energy storage device, a power distribution center, a lighting system, household appliances, a charging pile system and a hot water supply system; The multi-port power router is connected to wind power generation, photovoltaic power generation, AC power grid, energy storage device, power distribution center and monitoring and dispatching system respectively; The distribution center includes DC distribution cabinets and 220V AC distribution cabinets. The DC distribution cabinets include 48V DC distribution cabinets or 375V DC distribution cabinets or 750V DC distribution cabinets. The 48V DC distribution cabinet is connected to the lighting system, the 375V DC distribution cabinet is connected to household appliances, the 750V DC distribution cabinet is connected to the charging pile system, and the 220V AC distribution cabinet is connected to the hot water supply system.

[0022] As the core of the system, the multi-port power router is responsible for receiving, converting and distributing power from wind power generation, photovoltaic power generation, AC power grid and energy storage devices, and realizing intelligent dispatching and distribution of the monitoring and dispatching system.

[0023] The multi-port power router has the functions of reactive power compensation, high and low voltage ride through and harmonic control.

[0024] Wind power generation includes at least one wind turbine, each of which is equipped with a wind turbine and a generator for converting wind energy into electrical energy; wind power generation has an intelligent control system for automatically adjusting the rotation speed and blade angle of the wind turbine according to wind speed and wind direction to maximize wind energy capture efficiency and electrical energy output.

[0025] Each wind turbine can be connected to the multi-port power router independently or in parallel.

[0026] Photovoltaic power generation includes multiple photovoltaic arrays with maximum power point tracking function, which is used to automatically adjust the working state according to the lighting conditions to maximize the photoelectric conversion efficiency. Each photovoltaic array is composed of multiple photovoltaic panels, and each photovoltaic array can be connected to a multi-port power router independently or in parallel.

[0027] The monitoring and dispatching system integrates data collection monitoring, energy dispatching and energy storage management. It is used to monitor the system status in real time, optimize power generation efficiency and electricity consumption forecast, and realize efficient on-site utilization of clean energy.

[0028] In an emergency, the monitoring and dispatching system can automatically connect to the power grid to ensure the stability of building power, and provide user-friendly monitoring, query, parameter setting and fault diagnosis services to enhance the operability and maintainability of the system.

[0029] The multi-port power router integrates multiple converters, including an AC / DC / AC converter module, an AC / DC converter module and a DC / AC converter module. The AC / DC / AC converter module is an AC / DC-DC / AC module.

[0030] The AC / DC / AC converter module is one of a full-bridge power module, a wind power converter module, a four-quadrant converter module or an energy storage inverter module.

[0031] The above are only preferred embodiments of the present invention, which are only used to help understand the method and core ideas of the present application. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

[0032] The present invention solves the challenge of the existing technology that the power distribution system of zero-carbon buildings faces limited photovoltaic power generation and the coexistence of multiple types of electricity demand. The intelligent management system of the multi-port power router can efficiently connect clean energy power generation with the power grid, energy storage devices and various electrical equipment in the building (such as lighting systems, household appliances, charging pile systems, hot water supply systems), realize flexible scheduling and on-site energy storage of electricity, and when there is surplus electricity, the system can automatically feed back to the power grid, and in an emergency, it can quickly access the power grid to ensure power supply, realize the efficient utilization of DC power supply, and meet the power supply needs of AC equipment, which provides effective help for improving the utilization rate of clean energy, reducing building energy consumption, and helping to achieve zero-carbon goals.

Claims

1. A zero-carbon building power distribution system based on a multi-port power router, characterized in that: include: Multi-port power routers, wind power generation, photovoltaic power generation, AC power grid, monitoring and dispatching systems, energy storage devices, power distribution centers, lighting systems, household appliances, charging pile systems and hot water supply systems; The multi-port power router is respectively connected to the wind power generation, the photovoltaic power generation, the AC power grid, the energy storage device, the power distribution center and the monitoring and dispatching system; The distribution center includes a DC distribution cabinet and a 220V AC distribution cabinet. The DC distribution cabinet includes a 48V DC distribution cabinet, a 375V DC distribution cabinet, or a 750V DC distribution cabinet. The 48V DC distribution cabinet is connected to the lighting system, the 375V DC distribution cabinet is connected to the household appliances, the 750V DC distribution cabinet is connected to the charging pile system, and the 220V AC distribution cabinet is connected to the hot water supply system.

2. The zero-carbon building power distribution system based on a multi-port power router according to claim 1 is characterized in that: The multi-port power router, as the core of the system, is responsible for receiving, converting and distributing the power from the wind power generation, the photovoltaic power generation, the AC power grid and the energy storage device, so as to realize the intelligent dispatching and distribution of the monitoring and dispatching system.

3. The zero-carbon building power distribution system based on a multi-port power router according to claim 2 is characterized in that: The multi-port power router has the functions of reactive power compensation, high and low voltage ride through and harmonic control.

4. The zero-carbon building power distribution system based on a multi-port power router according to claim 1 is characterized in that: The wind power generation system includes at least one wind generator, each of which is equipped with a wind turbine and a generator for converting wind energy into electrical energy; the wind power generation system has an intelligent control system for automatically adjusting the rotation speed and blade angle of the wind turbine according to wind speed and wind direction to maximize wind energy capture efficiency and electrical energy output.

5. The zero-carbon building power distribution system based on a multi-port power router according to claim 4 is characterized in that: Each of the wind turbines can be connected to the multi-port power router independently or in parallel.

6. The zero-carbon building power distribution system based on a multi-port power router according to claim 1 is characterized in that: The photovoltaic power generation includes multiple photovoltaic arrays with a maximum power point tracking function for automatically adjusting the working state according to the lighting conditions to maximize the photoelectric conversion efficiency. Each of the photovoltaic arrays is composed of multiple photovoltaic panels, and each photovoltaic array can be connected to the multi-port power router independently or in parallel.

7. The zero-carbon building power distribution system based on a multi-port power router according to claim 1 is characterized in that: The monitoring and dispatching system integrates data collection monitoring, energy dispatching and energy storage management, and is used to monitor the system status in real time, optimize power generation efficiency and power consumption forecasting, and realize efficient on-site utilization of clean energy.

8. The zero-carbon building power distribution system based on a multi-port power router according to claim 7 is characterized in that: In an emergency, the monitoring and dispatching system can automatically connect to the power grid to ensure the stability of building power, and provide user-friendly monitoring, query, parameter setting and fault diagnosis services to enhance the operability and maintainability of the system.

9. The zero-carbon building power distribution system based on a multi-port power router according to claim 1, characterized in that: The multi-port power router integrates multiple converters, which include an AC / DC / AC converter module, an AC / DC converter module and a DC / AC converter module. The AC / DC / AC converter module is an AC / DC-DC / AC module.

10. The zero-carbon building power distribution system based on a multi-port power router according to claim 9, characterized in that: The AC / DC / AC converter module is one of a full-bridge power module, a wind power converter module, a four-quadrant frequency converter module or an energy storage inverter module.

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