CN217545605U - Complementary power generation and supply system of energy storage unit and hydrogen fuel cell - Google Patents
Complementary power generation and supply system of energy storage unit and hydrogen fuel cell Download PDFInfo
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- CN217545605U CN217545605U CN202220561690.8U CN202220561690U CN217545605U CN 217545605 U CN217545605 U CN 217545605U CN 202220561690 U CN202220561690 U CN 202220561690U CN 217545605 U CN217545605 U CN 217545605U
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Abstract
The utility model relates to an energy storage unit and complementary electricity generation power supply system of hydrogen fuel cell, when electric power demand changes and electric power fluctuation, utilize the two-way energy storage unit that possesses quick charge-discharge ability and the structural feature that the hydrogen fuel cell electricity generation power supply unit direct current meets, the two-way energy storage unit quick response alternating current-direct current bidirectional converter's power change, automatic and the complementary operation in coordination of hydrogen fuel cell electricity generation power supply unit, and energy management and control system carries out power regulation in real time, increase or reduce power or open and stop through controlling a plurality of hydrogen fuel cell electricity generation power supply units, adjust the electric quantity surplus of two-way energy storage unit, when two-way energy storage unit electric quantity is not enough, increase hydrogen fuel cell electricity generation power supply unit generated power, when two-way energy storage unit electric quantity is sufficient, reduce hydrogen fuel cell electricity generation power supply unit generated power; the stable operation and the power supply safety of a grid-connected or off-grid power system of the energy storage battery and hydrogen fuel cell complementary power generation and supply system are realized.
Description
Technical Field
The utility model belongs to the technical field of fuel cell energy storage electricity generation power supply, concretely relates to energy storage unit and complementary electricity generation power supply system of hydrogen fuel cell.
Background
Hydrogen fuel cell systems are sought after in the industry as one of the technological routes for the development of new energy power applications. Particularly hydrogen-fueled automobile systems, have been in commercial development. In the aspect of automobile power supply driving, a mode of controlling and actively adjusting power supply capacity of a hydrogen fuel cell is adopted, power supply power is controlled according to power consumption requirements, and the method has the advantage of actively controlling the power output capacity of the fuel cell by taking a hydrogen energy source as a raw material; the hydrogen is produced by using new energy, and the hydrogen fuel cell power generation and the new energy power are matched to supply power, prepare power and adjust peak frequency for the power system.
Because the hydrogen fuel cell power generation and supply system has the unidirectional power supply characteristic, only a current source mode can be adopted for grid-connected networking power generation and supply, and the power demand is balanced and slowly fluctuates by controlling the increase and decrease of the power generation power of the hydrogen fuel cell power generation and supply system. In an application scene of realizing new energy support or supplying power for a load in combination with a power grid or off-grid, the random fluctuation of the power load and the new energy of the power grid, and the application scene of a fuel cell power generation and supply system to a passive self-adaption and off-grid microgrid, when the unplanned power regulation is needed, the fuel cell power generation and supply system is generally hard to be successful, particularly the hydrogen fuel cell power supply system has slow power regulation rate and inherent delay, and the rapid response requirements of balancing electric energy and restraining the fluctuation of the electric energy cannot be met. Therefore, the problem needs to be solved, and the matching of the hydrogen fuel cell power supply system and new energy power is met, and the hydrogen fuel cell power supply system is used as a grid-connected or off-grid power system to stably operate and supply power safely.
Disclosure of Invention
The method aims to solve the defects that the power regulation rate of a hydrogen fuel cell power supply system is low, so that the inherent power response delay is caused, and particularly, the rapid power response requirement for balancing the power load of a power grid and the random fluctuation of new energy cannot be met; the utility model provides an energy storage unit and complementary electricity generation power supply system of hydrogen fuel cell, a serial communication port, the 1 st hydrogen fuel power generation unit of a plurality of hydrogen fuel power generation units, the 2 nd hydrogen fuel power generation unit, the ith hydrogen fuel power generation unit, the jth hydrogen fuel power generation unit, connect corresponding 1 st electric control switch respectively, the 2 nd electric control switch, the 3 rd electric control switch, the 4 th electric control switch, and with the common parallelly connected direct current bus that inserts of two-way energy storage unit, the 5 th electric control switch who passes through alternating current-direct current two-way converter by direct current bus and connect inserts alternating current power line, constitute the energy storage and exchange complementary hydrogen fuel cell power supply system.
The complementary power generation and supply system of the energy storage unit and the hydrogen fuel cell is characterized in that a system auxiliary power supply unit is respectively connected with an energy management and control system, an alternating current-direct current bidirectional converter, a bidirectional energy storage unit, a 1 st hydrogen fuel power generation unit, a 2 nd hydrogen fuel power generation unit, an ith hydrogen fuel power generation unit, a jth hydrogen fuel power generation unit, a 1 st hydrogen fuel power generation unit controller, a 2 nd hydrogen fuel power generation unit controller, an ith hydrogen fuel power generation unit controller and a jth hydrogen fuel power generation unit controller through a low-voltage direct current bus connected with a 7 th electric control switch, and meanwhile, the system auxiliary power supply unit is connected with an electric load power distribution cabinet to form an auxiliary power supply system for self power consumption of the complementary power generation and supply system of the energy storage unit and the hydrogen fuel cell.
The complementary power generation and supply system of the energy storage unit and the hydrogen fuel cell is characterized in that a 1 st hydrogen fuel power generation unit controller, a 2 nd hydrogen fuel power generation unit controller, an ith hydrogen fuel power generation unit controller and a jth hydrogen fuel power generation unit controller are respectively connected with a corresponding 1 st hydrogen fuel power generation unit, a corresponding 2 nd hydrogen fuel power generation monitoring line, a corresponding ith hydrogen fuel power generation monitoring line and a corresponding jth hydrogen fuel power generation monitoring line to form a plurality of hydrogen fuel power generation unit subsystems.
The energy storage unit and hydrogen fuel cell complementary power generation and supply system is characterized in that an alternating current power line of an electric load power distribution cabinet is connected through an 8 th electric control switch, and is simultaneously connected with a power grid through a 9 th electric control switch to form a power supply path of the power grid; the system is characterized in that when the 9 th electronic control switch is switched on, a grid-connected power generation and supply system of the energy storage unit and hydrogen fuel cell complementary power generation and supply system is formed, and when the 9 th electronic control switch is switched off, an off-grid power generation and supply system of the energy storage unit and hydrogen fuel cell complementary power generation and supply system is formed.
The energy storage unit and hydrogen fuel cell complementary power generation and supply system is characterized in that an energy management and control system is respectively connected with a 1 st electric control switch, a 2 nd electric control switch, a 3 rd electric control switch, a 4 th electric control switch, a 5 th electric control switch, a 6 th electric control switch, a 7 th electric control switch, an 8 th electric control switch, a 9 th electric control switch, a 1 st hydrogen fuel power generation unit controller, a 2 nd hydrogen fuel power generation unit controller, an ith hydrogen fuel power generation unit controller, a jth hydrogen fuel power generation unit controller, an alternating current-direct current bidirectional converter, a bidirectional energy storage unit, a system auxiliary power supply unit and an electric load power distribution cabinet through a system monitoring communication line, and is simultaneously connected with an upper computer control system to form a monitoring path and an energy management and control system of the energy storage unit and hydrogen fuel cell complementary power generation and supply system.
The power generation and supply system with the energy storage unit and the hydrogen fuel cell in a complementary mode is characterized in that the bidirectional energy storage unit is a bidirectional power energy storage device with rapid charging and discharging capacity.
The power generation and supply system with the energy storage unit and the hydrogen fuel cell in a complementary mode is characterized in that rated terminal voltage of the bidirectional energy storage unit is configured to meet the middle value of a voltage range of power generation output of the subsystem of the hydrogen fuel power generation unit, and the voltage range of charging and discharging of the bidirectional energy storage unit is larger than or equal to the voltage range of power generation output of the subsystem of the hydrogen fuel power generation unit.
The utility model relates to an energy storage unit and complementary electricity generation power supply system of hydrogen fuel cell, utilize the quick charge-discharge ability of two-way energy storage unit, the defect that the power response of hydrogen fuel cell electricity generation power supply unit is delayed has been overcome, when electric power demand changes and electric power fluctuation, utilize the two-way energy storage unit that possesses the quick charge-discharge ability and the structural feature that hydrogen fuel cell electricity generation power supply unit direct current meets, two-way energy storage unit quick response alternating current-direct current bidirectional converter's power change, automatic and hydrogen fuel cell electricity generation power supply unit cooperate complementary operation, charge when reducing the regulation of power demand, discharge when increasing the regulation of power demand, and compensate the slow defect of hydrogen fuel cell electricity generation power supply unit power change rate; meanwhile, the energy management and control system regulates power in real time, the surplus electric quantity of the bidirectional energy storage unit is regulated by controlling the power generation and supply units of the hydrogen fuel cells to increase or decrease power or start and stop, the power generation power of the power generation and supply unit of the hydrogen fuel cells is increased when the electric quantity of the bidirectional energy storage unit is insufficient, and the power generation power of the power generation and supply unit of the hydrogen fuel cells is decreased when the electric quantity of the bidirectional energy storage unit is sufficient; therefore, the quick response requirements of the hydrogen fuel cell power supply system on balancing electric energy and stabilizing electric power fluctuation are met, the hydrogen fuel cell power supply system is matched with new energy electric power, and the stable operation and the power supply safety of the energy storage battery and hydrogen fuel cell complementary power generation power supply system grid-connected or off-grid power system are realized.
Drawings
Fig. 1 is a schematic block diagram of a power generation and supply system with an energy storage unit and a hydrogen fuel cell complementary.
Detailed Description
An energy storage unit and hydrogen fuel cell complementary power generation and supply system is described with reference to the accompanying drawings as an example of implementation, however, the described embodiment is a part of the embodiment of the invention applied to an energy storage unit and hydrogen fuel cell complementary power generation and supply system, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention; the technology and the scheme of the utility model are not limited to the content given in this embodiment.
As shown in fig. 1, the complementary power generation and supply system of the energy storage unit and the hydrogen fuel cell is characterized in that a 1 st hydrogen fuel power generation unit (H1), a 2 nd hydrogen fuel power generation unit (H2), an ith hydrogen fuel power generation unit (Hi), and a jth hydrogen fuel power generation unit (Hj) of a plurality of hydrogen fuel power generation units are respectively connected with a corresponding 1 st electric control switch (K1), a corresponding 2 nd electric control switch (K2), a corresponding 3 rd electric control switch (K3), a corresponding 4 th electric control switch (K4), and a bidirectional energy storage unit (20) to be connected in parallel to a direct current bus (110), and the direct current bus (110) is connected to an alternating current power line (120) through an alternating current-direct current bidirectional converter (10) and a connected 5 th electric control switch (K5), so as to form the complementary power supply system of the hydrogen fuel cell with the energy storage and the alternating current.
The complementary power generation and supply system of the energy storage unit and the hydrogen fuel cell is characterized in that a system auxiliary power supply unit (40) is respectively connected with an energy management and control system (30), an alternating current-direct current bidirectional converter (10), a bidirectional energy storage unit (20), a 1 st hydrogen fuel power generation unit (H1), a 2 nd hydrogen fuel power generation unit (H2), an ith hydrogen fuel power generation unit (Hi), a jth hydrogen fuel power generation unit (Hj), a 1 st hydrogen fuel power generation unit controller (C1), a 2 nd hydrogen fuel power generation unit controller (C2), an ith hydrogen fuel power generation unit controller (Ci) and a jth hydrogen fuel power generation unit controller (Cj) through a low-voltage direct current bus (130) connected with a 7 th electric control switch (K7), and meanwhile, the system auxiliary power supply unit (40) is connected with an electric load power distribution cabinet (60), so that an auxiliary power supply system of the complementary power generation and supply system of the energy storage unit and the hydrogen fuel cell is formed.
The complementary power generation and supply system of the energy storage unit and the hydrogen fuel cell is characterized in that a 1 st hydrogen fuel power generation unit controller (C1), a 2 nd hydrogen fuel power generation unit controller (C2), an ith hydrogen fuel power generation unit controller (Ci) and a jth hydrogen fuel power generation unit controller (Cj) are respectively connected with a corresponding 1 st hydrogen fuel power generation unit (H1), a corresponding 2 nd hydrogen fuel power generation monitoring line (52), an ith hydrogen fuel power generation monitoring line (5 i) and a jth hydrogen fuel power generation monitoring line (5 j) through a corresponding 1 st hydrogen fuel power generation monitoring line (51), a corresponding 2 nd hydrogen fuel power generation unit (H2), an ith hydrogen fuel power generation unit (Hi) and a corresponding jth hydrogen fuel power generation unit (Hj) to form a plurality of hydrogen fuel power generation unit subsystems.
The complementary power generation and supply system of the energy storage unit and the hydrogen fuel cell is characterized in that an alternating current power line (120) of an electric load power distribution cabinet (60) is connected through an 8 th electric control switch (K8), and is simultaneously connected with a power grid (50) through a 9 th electric control switch (K9) to form a power supply path of the power grid; the system is characterized in that when the 9 th electronic control switch (K9) is switched on in a closed mode, a grid-connected power generation and supply system of the energy storage unit and hydrogen fuel cell complementary power generation and supply system is formed, and when the 9 th electronic control switch (K9) is switched off, an off-grid power generation and supply system of the energy storage unit and hydrogen fuel cell complementary power generation and supply system is formed.
The energy storage unit and hydrogen fuel cell complementary power generation and supply system is characterized in that an energy management and control system (30) is respectively connected with a 1 st electric control switch (K1), a 2 nd electric control switch (K2), a 3 rd electric control switch (K3), a 4 th electric control switch (K4), a 5 th electric control switch (K5), a 6 th electric control switch (K6), a 7 th electric control switch (K7), an 8 th electric control switch (K8), a 9 th electric control switch (K9), a 1 st hydrogen fuel power generation unit controller (C1), a 2 nd hydrogen fuel power generation unit controller (C2), an ith hydrogen fuel power generation unit controller (Ci), a jth hydrogen fuel power generation unit controller (Cj), an alternating current-direct current bidirectional converter (10), a bidirectional energy storage unit (20), a system auxiliary power supply unit (40) and a load power distribution cabinet (60) through a system monitoring communication line (31), and is simultaneously connected with an upper computer control system (70), so that a monitoring path and an energy management and control system of the energy storage unit and the hydrogen fuel cell complementary power generation and supply system are formed.
The power generation and supply system with the energy storage unit and the hydrogen fuel cell in a complementary mode is characterized in that the bidirectional energy storage unit (20) is a bidirectional power energy storage device with rapid charging and discharging capacity. As implementation examples, lithium battery energy storage, sodium battery energy storage, lead-acid battery energy storage, flow battery energy storage, super capacitor energy storage, and various energy storage units with bidirectional rapid charging and discharging characteristics are adopted.
The complementary power generation and supply system of the energy storage unit and the hydrogen fuel cell is characterized in that the rated terminal voltage of the bidirectional energy storage unit (20) is configured to meet the middle value of the voltage range of power generation output of the subsystem of the hydrogen fuel power generation unit, and the charging and discharging voltage range of the bidirectional energy storage unit (20) is larger than or equal to the voltage range of power generation output of the subsystem of the hydrogen fuel power generation unit.
The power generation and supply system with the energy storage unit and the hydrogen fuel cell in a complementary mode is characterized in that the operation control method for cooperatively adjusting and quickly responding to power change of the bidirectional energy storage unit (20) and the hydrogen fuel cell power generation and supply unit comprises the following steps:
when the power supply system is in grid-connected operation, the energy management and control system (30) controls the power generation and supply unit of the hydrogen fuel cell to increase or decrease power by monitoring the load power consumption change of the power consumption load power distribution cabinet (60) or according to a power control instruction of the upper computer control system (70), the bidirectional energy storage unit (20) automatically and quickly responds to the power change and the demand of the alternating current-direct current bidirectional converter (10), meanwhile, the energy management and control system (30) adjusts the power of the power generation and supply unit of the hydrogen fuel cell according to the electric quantity of the bidirectional energy storage unit (20), and when the electric quantity of the bidirectional energy storage unit (20) is lower, the power of the power generation and supply unit of the hydrogen fuel cell is correspondingly adjusted and increased; when the electric quantity of the bidirectional energy storage unit (20) is higher, the power of the hydrogen fuel cell power generation and supply unit is correspondingly adjusted and reduced;
when the system runs off the grid, the alternating current-direct current bidirectional converter (10) runs in a voltage source mode, the power change on an alternating current power line (120) is automatically responded, meanwhile, the power change of the alternating current-direct current bidirectional converter (10) is monitored by the energy management and control system (30), the power of the hydrogen fuel cell power generation and supply unit is controlled to track the power of the alternating current-direct current bidirectional converter (10), meanwhile, the energy management and control system (30) adjusts the power of the hydrogen fuel cell power generation and supply unit according to the electric quantity of the bidirectional energy storage unit (20), and when the electric quantity of the bidirectional energy storage unit (20) is low, the power is correspondingly adjusted and increased, so that the power of the hydrogen fuel cell power generation and supply unit is larger than the power of the alternating current-direct current bidirectional converter (10); when the electric quantity of the bidirectional energy storage unit (20) is higher, the power is correspondingly adjusted and reduced, so that the power of the hydrogen fuel cell power generation and supply unit is smaller than the power of the alternating current-direct current bidirectional converter (10).
The utility model relates to a complementary electricity generation power supply system of energy storage unit and hydrogen fuel cell, utilize the quick charge-discharge ability of two-way energy storage unit (20), the defect that the power response of hydrogen fuel cell electricity generation power supply unit is delayed has been overcome, when electric power demand changes and electric power fluctuates, utilize the two-way energy storage unit (20) that possess the quick charge-discharge ability and the hydrogen fuel cell electricity generation power supply unit direct current and connect the structural characteristic, two-way energy storage unit (20) quick response alternating current-direct current two-way converter (10) power change, automatic and hydrogen fuel cell electricity generation power supply unit are complementary operation in coordination, charge when the regulation that reduces the power demand, discharge when the regulation that increases the power demand, and compensate the slow defect of hydrogen fuel cell electricity generation power supply unit power change rate; meanwhile, the energy management and control system (30) regulates power in real time, the surplus of the electric quantity of the bidirectional energy storage unit (20) is regulated by controlling the power generation and supply units of the hydrogen fuel cells to increase or decrease power or start and stop, the power generation power of the power generation and supply units of the hydrogen fuel cells is increased when the electric quantity of the bidirectional energy storage unit (20) is insufficient, and the power generation power of the power generation and supply units of the hydrogen fuel cells is decreased when the electric quantity of the bidirectional energy storage unit (20) is sufficient; therefore, the quick response requirements of the hydrogen fuel cell power supply system on balancing electric energy and stabilizing electric power fluctuation are met, the hydrogen fuel cell power supply system is matched with new energy electric power, and the stable operation and the power supply safety of the energy storage battery and hydrogen fuel cell complementary power generation power supply system grid-connected or off-grid power system are realized.
The specific embodiments are given above, but the present invention is not limited to the described embodiments. To those skilled in the art, according to the technical solution of the present invention, the assembly, formula, and parameters of various modifications are designed without the creative labor, and the changes, modifications, replacements, and modifications to the embodiments without departing from the principles and design framework of the present invention still fall within the protection scope of the present invention.
Claims (7)
1. A complementary power generation and supply system of an energy storage unit and a hydrogen fuel cell is characterized in that a 1 st hydrogen fuel power generation unit, a 2 nd hydrogen fuel power generation unit, an ith hydrogen fuel power generation unit and a jth hydrogen fuel power generation unit of a plurality of hydrogen fuel power generation units are respectively connected with a corresponding 1 st electric control switch, a corresponding 2 nd electric control switch, a corresponding 3 rd electric control switch and a corresponding 4 th electric control switch, and are connected with a bidirectional energy storage unit in parallel to be connected into a direct current bus, and the direct current bus is connected into an alternating current power line through an alternating current-direct current bidirectional converter and a connected 5 th electric control switch to form the complementary power supply system of the hydrogen fuel cell with the energy storage and alternating current.
2. The system of claim 1, wherein the system auxiliary power supply unit is connected to the energy management and control system, the ac/dc bidirectional converter, the bidirectional energy storage unit, the 1 st hydrogen fuel power generation unit, the 2 nd hydrogen fuel power generation unit, the ith hydrogen fuel power generation unit, the jth hydrogen fuel power generation unit, the 1 st hydrogen fuel power generation unit controller, the 2 nd hydrogen fuel power generation unit controller, the ith hydrogen fuel power generation unit controller, and the jth hydrogen fuel power generation unit controller through a low-voltage dc bus connected to the 7 th electrical control switch, and the system auxiliary power supply unit is connected to the electrical load distribution cabinet to form an auxiliary power supply system for self-power utilization of the energy storage unit and the hydrogen fuel cell complementary power generation and supply system.
3. The system according to claim 1, wherein the 1 st hydrogen fuel power generation unit controller, the 2 nd hydrogen fuel power generation unit controller, the ith hydrogen fuel power generation unit controller and the jth hydrogen fuel power generation unit controller are respectively connected with the corresponding 1 st hydrogen fuel power generation unit, the 2 nd hydrogen fuel power generation monitoring line, the ith hydrogen fuel power generation monitoring line and the jth hydrogen fuel power generation monitoring line through the corresponding 1 st hydrogen fuel power generation monitoring line, the 2 nd hydrogen fuel power generation monitoring line, the ith hydrogen fuel power generation unit and the jth hydrogen fuel power generation unit to form a plurality of hydrogen fuel power generation unit subsystems.
4. The complementary power generation and supply system of the energy storage unit and the hydrogen fuel cell according to claim 1, characterized in that an alternating current power line of an electric load power distribution cabinet is connected through an 8 th electric control switch, and is simultaneously connected with a power grid through a 9 th electric control switch to form a power supply path of the power grid; the system is characterized in that when the 9 th electric control switch is switched on, a grid-connected power generation and supply system of the energy storage unit and hydrogen fuel cell complementary power generation and supply system is formed, and when the 9 th electric control switch is switched off, an off-grid power generation and supply system of the energy storage unit and hydrogen fuel cell complementary power generation and supply system is formed.
5. The system according to claim 1, wherein the energy management and control system is connected to the 1 st electrical control switch, the 2 nd electrical control switch, the 3 rd electrical control switch, the 4 th electrical control switch, the 5 th electrical control switch, the 6 th electrical control switch, the 7 th electrical control switch, the 8 th electrical control switch, the 9 th electrical control switch, the 1 st hydrogen fuel power generation unit controller, the 2 nd hydrogen fuel power generation unit controller, the ith hydrogen fuel power generation unit controller, the jth hydrogen fuel power generation unit controller, the ac/dc bidirectional converter, the bidirectional energy storage unit, the system auxiliary power supply unit, and the electrical load distribution cabinet through a system monitoring communication line, and is simultaneously connected to the upper computer control system to form a monitoring path and an energy management and control system of the energy storage unit and hydrogen fuel cell complementary power generation and supply system.
6. The system of claim 1, wherein the bidirectional energy storage unit is a bidirectional power storage device with fast charging and discharging capability.
7. The system of claim 1, wherein the nominal terminal voltage of the bidirectional energy storage unit is configured to satisfy a middle value of the voltage range of the subsystem of the hydrogen fuel power generation unit for generating power, and the voltage range of charging and discharging the bidirectional energy storage unit is greater than or equal to the voltage range of the subsystem of the hydrogen fuel power generation unit for generating power.
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| CN202220561690.8U CN217545605U (en) | 2022-03-16 | 2022-03-16 | Complementary power generation and supply system of energy storage unit and hydrogen fuel cell |
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