Hydrogen production multi-energy complementary micro-grid system
By designing a hydrogen production multi-energy complementary microgrid system, which includes an EMS system, a power generation unit, an energy router, an energy storage system, and a hydrogen production unit, the intermittency and instability of renewable energy power generation are solved, achieving multi-energy complementarity and stable supply of energy, and improving the utilization rate of renewable energy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-03
AI Technical Summary
Existing renewable energy power generation is intermittent and unstable, resulting in low utilization rate and poor economic efficiency. Excess electricity cannot be effectively utilized and may even be wasted.
Design a hydrogen production multi-energy complementary microgrid system, including an EMS system, a power generation unit, an energy router, an energy storage system, and a hydrogen production unit. The EMS system performs energy management and optimization control, the energy router realizes energy conversion and distribution, the energy storage system stores excess electricity, and the hydrogen production unit converts excess electricity into hydrogen for backup, forming a multi-energy complementary microgrid system.
It has achieved multi-energy complementarity and stable supply of renewable energy, improved the utilization rate of renewable energy, solved the intermittency problem, optimized energy distribution and improved energy utilization.
Smart Images
Figure CN224083199U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of energy technology, specifically a hydrogen production multi-energy complementary microgrid system. Background Technology
[0002] With the rapid development of the global economy and the continuous growth of the population, energy demand continues to grow. However, traditional fossil energy not only has limited reserves, but also causes increasingly serious environmental pollution and greenhouse gas emissions during its extraction and use. Therefore, developing renewable energy and realizing the transformation and upgrading of the energy structure has become a global consensus.
[0003] Existing renewable energy sources mostly use solar or wind power. Solar power mainly uses the energy of solar radiation to generate electricity or heat, while wind power converts wind energy into electricity through wind turbines. However, in actual use, renewable energy generation is affected by factors such as weather or seasons, resulting in significant intermittency and instability, which leads to low utilization rates. When there is a surplus of renewable energy generation, the excess electricity may not be effectively utilized or may even be wasted, thereby increasing the cost of use and reducing the economic viability of renewable energy.
[0004] In summary, this invention provides a hydrogen production multi-energy complementary microgrid system to solve the above problems. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] A hydrogen production multi-energy complementary microgrid system includes an EMS system, a power generation unit, an energy router, an energy storage system, a hydrogen production unit, and a power grid. The EMS system is responsible for the energy management and optimization control of the entire system. The power generation unit is used to convert renewable energy into electrical energy. The energy router is used to realize the energy conversion and distribution between the power generation unit, the energy storage system, the hydrogen production unit, and the power grid. The energy storage system is used to store excess electricity. The hydrogen production unit is used to produce hydrogen from excess electricity for later use.
[0007] Furthermore, in this utility model, the power router includes a DC / DC converter, a central controller, a hydrogen production power supply, a PCS converter, and a 750V DC bus; the hydrogen production unit includes an alkaline electrolyzer and a hydrogen storage device; and the power generation unit includes a photovoltaic system and a wind power system.
[0008] Furthermore, in this invention, the EMS system and the power router communicate via an RS485 communication port and support the Modbus RTU standard protocol.
[0009] Furthermore, in this invention, the photovoltaic system is connected to a DC / DC converter via an MPPT port, and the output of the DC / DC converter is connected to a 750V DC bus. The output of the wind power system is connected to a 750V DC bus. The input of the hydrogen production power supply is connected to a 750V DC bus, and the output of the hydrogen production power supply is connected to an alkaline electrolyzer. The DC terminal of the PCS converter is connected to a 750V DC bus, and the AC terminal of the PCS converter is connected to the power grid. The energy storage system is connected to a 750V DC bus via a DC / DC converter.
[0010] Beneficial effects: This utility model has the following beneficial effects:
[0011] This invention uses a power generation unit to convert renewable energy into DC power to supply the system. The EMS system, in conjunction with a power router, adjusts the distribution of power. When the power generation exceeds the hydrogen production unit's demand, the excess power is used to supplement the energy storage battery. Any remaining surplus is supplied to the park's electricity needs. The energy storage system also stores some excess power for later use. If the power generation unit is unstable or insufficient, the energy storage system releases power to maintain stable system operation. If the energy storage system runs out of power and the power generation is still insufficient, hydrogen produced by the hydrogen production unit can be used to continue generating electricity to support the load. This achieves multi-energy complementarity and stable supply, effectively solving the intermittency problem of renewable energy and improving the utilization rate of renewable energy. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the system of this utility model;
[0013] Figure 2 This is a schematic diagram of the electric router of this utility model;
[0014] Figure 3 This is a schematic diagram of the hydrogen production unit of this utility model;
[0015] Figure 4 This is a schematic diagram of the power generation unit of this utility model. Detailed Implementation
[0016] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.
[0017] Example 1
[0018] like Figure 1-4 As shown, this is the first embodiment of the present invention. This embodiment provides a hydrogen production multi-energy complementary microgrid system, including an EMS system, a power generation unit, an energy router, an energy storage system, a hydrogen production unit, and a power grid. The EMS system is responsible for the energy management and optimization control of the entire system. The power generation unit is used to convert renewable energy into electrical energy. The energy router is used to realize the energy conversion and distribution between the power generation unit, the energy storage system, the hydrogen production unit, and the power grid. The energy storage system is used to store excess electricity. The hydrogen production unit is used to produce hydrogen from excess electricity for later use.
[0019] like Figure 1-4 As shown, the power generation unit can convert renewable energy into DC power to supply the system. The EMS system monitors the status of the power generation unit, energy storage system, and hydrogen production unit in real time through the power router. It can then adjust the power distribution according to the power generation, energy storage status, and load demand. When the power generation exceeds the hydrogen production unit's hydrogen production demand, the excess power is used to supplement the energy storage battery. Any remaining surplus is supplied to the park's electricity needs. The energy storage system will also store some excess power for later use. If the power generation unit is unstable or generates insufficient power, the energy storage system will release power to maintain stable system operation. If the energy storage system runs out of power and the power generation is still insufficient, hydrogen produced by the hydrogen production unit can continue to generate power to support the load. This achieves multi-energy complementarity and stable supply, which not only effectively solves the intermittent problem of renewable energy but also improves the utilization rate of renewable energy.
[0020] Example 2
[0021] Reference Figure 2-4 This is the second embodiment of the present invention, which is based on the previous embodiment.
[0022] In this embodiment, the power router includes a DC / DC converter, a central controller, a hydrogen production power supply, a PCS converter, and a 750V DC bus. The hydrogen production unit includes an alkaline electrolyzer and a hydrogen storage device. The power generation unit includes a photovoltaic system and a wind power system.
[0023] The EMS system and the power router communicate via an RS485 communication port and support the Modbus RTU standard protocol.
[0024] The photovoltaic system is connected to the DC / DC converter via the MPPT port, and the output of the DC / DC converter is connected to the 750V DC bus. The output of the wind power system is connected to the 750V DC bus. The input of the hydrogen production power supply is connected to the 750V DC bus, and the output of the hydrogen production power supply is connected to the alkaline electrolyzer. The DC terminal of the PCS converter is connected to the 750V DC bus, and the AC terminal of the PCS converter is connected to the power grid. The energy storage system is connected to the 750V DC bus via the DC / DC converter.
[0025] like Figure 2-4 As shown, the power generation unit includes a photovoltaic system and a wind power system, which can provide power from different renewable energy sources. Through a DC / DC converter, a PCS converter, and a 750V DC bus, the photovoltaic system, wind power system, energy storage system, hydrogen production unit, and power grid are effectively connected to form a multi-energy complementary microgrid system. The EMS system interacts with the power router through an RS485 communication port and supports the Modbus RTU standard protocol, which facilitates data acquisition, remote monitoring, and control. The EMS system can then be used to coordinate and control each unit, optimize energy distribution, and improve energy efficiency. The alkaline electrolyzer and hydrogen storage equipment in the hydrogen production unit can convert excess renewable energy into hydrogen for storage, which can solve the intermittency and volatility problems of photovoltaic and wind power generation.
[0026] In operation, power is first generated through the wind or photovoltaic system in the power generation unit. The photovoltaic modules of the photovoltaic system are connected to the MPPT port of the power router via a series-parallel design, converting solar energy into DC power. The wind turbine outputs DC power, which is directly connected to the 750V DC bus of the power router, thus providing direct power to the system. When the power generation exceeds the system load demand, the hydrogen production power source draws power from the 750V DC bus and transmits the power to the hydrogen production unit. The alkaline electrolyzer in the hydrogen production unit generates hydrogen and oxygen through water electrolysis. The hydrogen is stored in a hydrogen storage device for later use. If the hydrogen production demand is met, excess electricity is stored in the energy storage system for later use. Furthermore, if the hydrogen production demand is met, the excess electricity is stored in the energy storage system for later use. When the hydrogen unit shuts down and there is still excess power generation, the excess power can be fed into the grid through the PCS converter. When photovoltaic or wind power generation is insufficient, the energy storage system releases power to the 750V DC bus through the DC / DC converter to maintain stable system operation. If the energy storage system runs out of power and power generation is still insufficient, the hydrogen produced by the hydrogen production unit can be released to generate electricity to continue generating power and provide power support for the load. In extreme cases, if the hydrogen storage and energy storage capacity are insufficient to meet the load demand, supplementary power can be obtained from the external grid through the PCS converter, thereby achieving multi-energy complementarity and stable supply of energy. This not only effectively solves the problem of intermittency of renewable energy, but also improves the utilization rate of renewable energy.
[0027] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.
[0028] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.
Claims
1. A hydrogen production multi-energy complementary microgrid system, characterized in that: The system includes an EMS system, a power generation unit, an energy router, an energy storage system, a hydrogen production unit, and a power grid. The EMS system is responsible for the energy management and optimization control of the entire system. The power generation unit is used to convert renewable energy into electrical energy. The energy router is used to realize the energy conversion and distribution between the power generation unit, the energy storage system, the hydrogen production unit, and the power grid. The energy storage system is used to store excess electricity. The hydrogen production unit is used to produce hydrogen from excess electricity for later use.
2. The hydrogen production multi-energy complementary microgrid system as described in claim 1, characterized in that: The power router includes a DC / DC converter, a central controller, a hydrogen production power supply, a PCS converter, and a 750V DC bus. The hydrogen production unit includes an alkaline electrolyzer and a hydrogen storage device. The power generation unit includes a photovoltaic system and a wind power system.
3. The hydrogen production multi-energy complementary microgrid system as described in claim 1, characterized in that: The EMS system and the power router communicate via an RS485 communication port and support the Modbus RTU standard protocol.
4. The hydrogen production multi-energy complementary microgrid system as described in claim 2, characterized in that: The photovoltaic system is connected to a DC / DC converter via an MPPT port, and the output of the DC / DC converter is connected to a 750V DC bus. The output of the wind power system is connected to a 750V DC bus. The input of the hydrogen production power supply is connected to a 750V DC bus, and the output of the hydrogen production power supply is connected to an alkaline electrolyzer. The DC terminal of the PCS converter is connected to a 750V DC bus, and the AC terminal of the PCS converter is connected to the power grid. The energy storage system is connected to a 750V DC bus via a DC / DC converter.