A power generation control method for distributed hydrogen energy power station

Abstract

The present invention relates to a power generation control method for a distributed hydrogen energy power station, which includes a methanol hydrogen production unit, a fuel cell power generation unit, an energy storage unit, a centralized control unit, etc. The power generation control method is integrated in the centralized control unit, and the power generation control method is a linkage power generation control of the methanol hydrogen production unit, the fuel cell power generation unit and the energy storage unit. The power generation control method includes steady-state operating point determination logic and dynamic operating point adjustment logic. The present invention uses stable slow-response equipment, dynamically adjusts fast-response equipment, and provides a steady flow bottoming for instantaneous response equipment, and uses the system in accordance with its own characteristics, coordinates and links, and maximizes the functions and advantages of each system of the hydrogen energy power station, thereby improving the overall power generation efficiency of the power station.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen power plants, and in particular to a power generation control method for a distributed hydrogen power plant. Background Art

[0002] A hydrogen power station is a facility that converts hydrogen into electricity. It consists of a hydrogen production unit, hydrogen storage unit, power generation unit, energy storage unit, power conversion unit, and control unit. Hydrogen is the energy source of a hydrogen power station. Hydrogen, with its high calorific value and pollution-free status, is recognized worldwide as a clean energy source and will be a key component of the ultimate environmentally friendly solution for future energy transitions. Hydrogen has the highest calorific value of all fossil fuels, chemical fuels, and biofuels, at 142,351 kJ / kg. This is three times the calorific value of gasoline, 2.6 times that of natural gas, 11 times that of diesel, and four times that of coal. The power generation equipment in a hydrogen power station is a fuel cell, a highly efficient device that directly converts the chemical energy of hydrogen into electricity. This differs from diesel generators, which undergo secondary conversion of diesel (combustion of diesel chemical energy to mechanical energy to electricity), resulting in high pollution, emissions, noise, and heat. It also differs from battery packs, which have high installed capacity, high self-consumption, high lifespan degradation, and environmental pollution throughout their lifecycle. Hydrogen power stations can generate hydrogen from water electrolysis, chemical feedstock, or purified hydrogen from chemical feedstock byproducts. Upstream, they connect with green photovoltaic power, wind power, valley power, and industrial gray hydrogen, while downstream, they supply power to users and the grid. The chemical feedstock hydrogen-to-fuel cell power generation route has potential applications in power stations and backup stations driven by local conditions and tailored use of materials, such as chemical plants that need to consume byproduct methanol.

[0003] As a backup power station, a hydrogen power station needs to have features such as instantaneous start-up at any time and rapid load change response. Methanol hydrogen production equipment is chemical equipment and is now used in new backup scenarios. Unlike the conventional pursuit of long-term stable operation after debugging, it requires frequent switching on and off and frequent load changes. The methanol hydrogen production unit has a long switching process, slow load change response, and unstable flow. Problems such as the long switching time, slow load change response, and unstable flow are highlighted. Hydrogen used for power generation must not only meet the arbitrary changes in the back-end load, but also maintain the pressure stability of the unstable flow of hydrogen at the front end of power generation. The safety of hydrogen use requires low or even zero emissions of hydrogen, and fuel cells need to convert as much hydrogen as possible into electricity. The hydrogen energy backup power station combined with chemical equipment is a new thing. It needs to solve the three-hybrid linkage backup function of hydrogen production, hydrogen power generation and energy storage on the basis of no hydrogen storage and on-site production and use. This is a great challenge for the centralized control of hydrogen power stations.

[0004] Therefore, there is an urgent need in the art for a three-hybrid control method for methanol hydrogen production, hydrogen power generation and energy storage for hydrogen power plants. Summary of the Invention

[0005] The purpose of the present invention is to provide a power generation control method for a distributed hydrogen energy power station in order to overcome the defects of the above-mentioned prior art.

[0006] In order to achieve the purpose of the present invention, this application provides the following technical solutions.

[0007] The present application provides a power generation control method for a distributed hydrogen power station. The hydrogen power station includes a methanol hydrogen production unit, a power generation unit, and an energy storage unit. The hydrogen production unit is connected to the power generation unit and provides hydrogen to the power generation unit. The power generation unit includes multiple fuel cells. The electricity generated by the power generation unit is used for self-consumption in the hydrogen power station, storage in the energy storage unit, and use by power users. The control method includes a steady-state operating point control method and a dynamic operating point control method, wherein:

[0008] The steady-state operating point control method comprises the following steps:

[0009] Step 1: Calculate the current maximum required power and maximum allowed power generation capacity of the power generation unit.

[0010] P FCSSReqMax =P St +P BASSChargPermitMax +P Load

[0011]

[0012] Among them, P FCSSReqMax is the current maximum required power of the power generation unit, P St is the real-time self-consumption power of the hydrogen power station during steady-state power generation, P BASSChargPermitMax is the current maximum allowable charging power of the energy storage unit of the hydrogen power station, P Load is the real-time power demand of the load, P FCSSPermitMax is the maximum allowable power generation capacity of the hydrogen power station power generation unit, is the maximum allowable power generation of each available fuel cell, and N is the number of available fuel cells.

[0013] Step 2: Determine the reference target power of the power generation unit

[0014] When the battery SOC is lower than SOC1:

[0015] P FCSSTar =min(P FCSSReqMax ,P FCSSPermitMax );

[0016] When the battery SOC is within the range of [SOC1, SOC2]:

[0017] P FCSStar =min(PFCSSReqMax ,P FCSSPermitMax , P St +P σ1 );

[0018] When the battery SOC is higher than SOC2:

[0019] P FCSStar =min(P FCSSPermitMax , P St -P σ1 );

[0020] Among them, SOC is the real-time remaining power of the energy storage unit, SOC1 is the lower limit of the remaining power threshold of the energy storage unit partition, SOC2 is the upper limit of the remaining power threshold of the energy storage unit partition, P FCSSTar is the reference target power of the power generation unit, P σ1 A smaller power rating used to ensure safe battery charging and discharging.

[0021] Step 3: Look up the table to determine the operating point of the hydrogen production unit and the number of fuel cells that need to be turned on in the power generation unit.

[0022] (f HGSS ,n)=Tab(P FCSSTar )

[0023] Among them, f HGSS The working point is set for the hydrogen production unit, which is sent by the centralized control unit to the hydrogen production unit. The hydrogen production unit performs hot standby and operation according to the set working point. n is the number of fuel cells required to be turned on by the power generation unit. The working point set for the hydrogen production unit and the number of fuel cells required to be turned on by the power generation unit are related to the reference target power P of the power generation unit. FCSSTar The mapping relationship between them is the empirical value measured in the calibration stage.

[0024] The dynamic operating point control method comprises the following steps:

[0025] Step 1: When the hydrogen production unit completes hot standby, the hydrogen pressure at the inlet of the power generation subsystem reaches the allowable operating range of the power generation subsystem pressure [Press min ,Press max ], the electronic system is at idle speed Start n fuel cell systems:

[0026]

[0027] in, is the idle power of the fuel cell in the power generation unit, It is the idle power generation of the current power generation unit.

[0028] Step 2: Real-time and periodic determination of whether the current hydrogen pressure is within the pressure allowable operating range is performed to fuzzy match the real-time power demand of the power generation unit.

[0029]

[0030] When the hydrogen pressure is higher than Press max hour:

[0031] P FCSS (t) = P FCSSReal (t-1)+P σ2

[0032] When the hydrogen pressure is between [PreSs min ,Press max ] between:

[0033] P FCSS (t) = P FCSSReal (t-1)

[0034] When the hydrogen pressure is lower than Press min hour:

[0035] P FCSS (t) = P FCSSReal (t-1)-P σ2

[0036] Among them, P FCSSReal is the actual power of the power generation unit, is the actual power of a fuel cell in use, P FCSS (t) is the power demand of the power generation unit at time t, P FCSSReal (t-1) is the actual power of the power generation unit at the previous moment, P σ2 Calibrate the value for a smaller power step.

[0037] The power generation control method for a distributed hydrogen power station is characterized in that the number of configured fuel cells in the power generation unit ≥ the number of available units N ≥ the number of required units to be turned on n ≥ 1.

[0038] The power generation control method for a distributed hydrogen power station is characterized in that the reference target power P of the power generation unit is FCSSTar The method for determining the set operating point of the hydrogen production unit and the number of fuel cells required to be started in the power generation unit, that is, the following mapping relationship includes:

[0039] (f HGSS ,n)=Tab(P FCSSTar )

[0040] Step 1: The hydrogen production unit is tested separately to obtain the stable flow rate of hydrogen produced at different working points, and a mapping relationship between the working set point of the hydrogen production unit and the steady-state hydrogen production flow rate is obtained.

[0041] Step 2: The hydrogen production unit and the power generation unit are jointly debugged to test the hydrogen production unit at different working points to produce stable hydrogen, the power generation unit completely consumes the stable flow of hydrogen, and the maximum power generation that can be achieved, and obtain the mapping relationship between the steady-state hydrogen production flow and the maximum power generation of the power generation unit.

[0042] Step 3: Through steps 1 and 2, the reference target power P of the power generation unit is obtained FCSSTar The empirical mapping relationship between the set operating point of the hydrogen production unit.

[0043] Step 4: Based on the number of fuel cells configured for the power generation unit and the fuel cell high-efficiency power generation area, set the optimal number of fuel cells to be started under the reference target power of the power generation unit.

[0044] The power generation control method for a distributed hydrogen power station is characterized in that when the hydrogen power station is just turned on, the hydrogen production unit gradually produces hydrogen, and the hydrogen transmission channel between the hydrogen production unit and the power generation unit is first disconnected until the accumulated hydrogen reaches the opening threshold pressure, which is 12 bar.

[0045] The power generation control method for a distributed hydrogen power station is characterized in that the initial value of the fuel cell startup power is its idle power, which is a smaller power that the power generated by the fuel cell meets the power consumption of the fuel cell's own accessories and does not require power consumption by equipment outside the power generation system. It can also be customized by the fuel cell manufacturer.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] (1) The control method of the present invention takes into account the characteristics of each system, gives full play to the advantages of each system, draws on their strengths to make up for their weaknesses, and seamlessly cooperates with each other;

[0048] (2) The method of the present invention takes into account the safe working range and efficient working range of each system and the high energy utilization rate of the entire power station;

[0049] (3) The method of the present invention, as a backup power station with hydrogen as the main body, meets the random demand of load power and is simple, effective and highly applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 Schematic diagram of the three-hybrid hybrid system of the hydrogen power station

[0051] In the attached drawings, 1 is the hydrogen production unit, 2 is the power generation unit, 3 is the energy storage unit, 4 to 6 are fuel cells, 7 is the regulating valve, 8 is the internal pressure gauge of the hydrogen production unit, and 9 is the pressure gauge at the front end of the power generation unit. DETAILED DESCRIPTION

[0052] Unless otherwise defined, technical or scientific terms used in this specification and claims shall have the ordinary meaning as understood by persons having ordinary skill in the art to which this invention belongs. All numerical values ​​listed herein, from the lowest value to the highest value, refer to all numerical values ​​obtained by incrementing the lowest value to the highest value by one unit when the difference between the lowest value and the highest value is two units or more.

[0053] The following describes specific embodiments of the present invention. It should be noted that, in the context of describing these embodiments, for the sake of brevity and clarity, this specification does not exhaustively describe all features of the actual embodiments. Those skilled in the art may modify and substitute the embodiments of the present invention without departing from the spirit and scope of the present invention, and the resulting embodiments are also within the scope of protection of the present invention.

[0054] A three-hybrid linkage power generation control method for a distributed hydrogen energy power station, wherein the distributed hydrogen energy power station is characterized in that it includes a methanol hydrogen production unit, a fuel cell power generation unit, an energy storage unit, an electric power supply and conversion unit, a centralized control unit, etc.

[0055] The power generation control method is integrated into the centralized control unit.

[0056] The power generation control method is a three-in-one hybrid power generation control of the methanol hydrogen production unit, the fuel cell power generation unit and the energy storage unit.

[0057] The power generation control method includes a steady-state operating point control method and a dynamic operating point adjustment control method.

[0058] The steady-state operating point control method comprises the following steps:

[0059] Step 1: Calculate the current maximum required power and maximum allowable power generation capacity of the power generation unit according to the following formula.

[0060] P FCSSReqMax =P St +P BASSChargPermitMax +P Load

[0061]

[0062] Among them, P FCSSReqMax is the current maximum required power of the power generation unit, P Stis the real-time self-consumption power of the hydrogen power station during steady-state power generation, P BASSChargPermitMax is the current maximum allowable charging power of the energy storage unit of the hydrogen power station, P Load is the real-time power demand of the load, P FCSSPermitMax is the maximum allowable power generation capacity of the hydrogen power station power generation unit, is the maximum allowable power generation of each available fuel cell, and N is the number of available fuel cells.

[0063] Step 2: Determine the reference target power of the power generation unit according to the following formula

[0064] When the battery SOC is lower than SOC1:

[0065] P FCSsTar =min(P FCSSReqMax ,P FCSSPermitMax );

[0066] When the battery SOC is within the range of [SOC1, SOC2]:

[0067] P FCSSTar =min(P FCSSReqMax ,P FCSSPermitMax , P St +P σ1 );

[0068] When the battery SOC is higher than SOC2:

[0069] P FCSSTar =min(P FCSSPermitMax , P St -P σ1 );

[0070] Among them, SOC is the real-time remaining power of the energy storage unit, SOC1 is the lower limit of the remaining power threshold of the energy storage unit partition, SOC2 is the upper limit of the remaining power threshold of the energy storage unit partition, P FCSSTar is the reference target power of the power generation unit, P σ1 A smaller power rating used to ensure safe battery charging and discharging.

[0071] Step 3: Determine the number of fuel cells required to be turned on at the operating point of the hydrogen production unit and the operating point of the power generation unit based on the mapping relationship between the operating point of the hydrogen production unit and the number of fuel cells required to be turned on at the power generation unit.

[0072] (f HGSS ,n)=Tab(P FCSSTar )

[0073] Among them, f HGSSThe working point is set for the hydrogen production unit, which is sent by the centralized control unit to the hydrogen production unit. The hydrogen production unit performs hot standby and operation according to the set working point. n is the number of fuel cells required to be turned on by the power generation unit. The working point set for the hydrogen production unit and the number of fuel cells required to be turned on by the power generation unit are related to the reference target power P of the power generation unit. FCSSTar The mapping relationship between them is the empirical value measured in the calibration stage.

[0074] The dynamic operating point control method comprises the following steps:

[0075] Step 1: When the hydrogen production unit completes hot standby, the hydrogen production unit produces hydrogen and pressurizes it until the inlet pressure of the power generation subsystem reaches the allowable working range of the power generation subsystem pressure [Press min ,Press max ], the electronic system is at idle speed Start n fuel cell systems, and the initial power of the power generation system is calculated according to the following formula:

[0076]

[0077] in, is the idle power of the fuel cell in the power generation unit, It is the idle power generation of the current power generation unit.

[0078] Step 2: Real-time and periodic determination of whether the current hydrogen pressure is within the pressure allowable operating range is performed to fuzzy match the real-time power demand of the power generation unit.

[0079] The current actual power calculation formula of the power generation unit is as follows:

[0080]

[0081] When the hydrogen pressure is higher than Press max When , the power demand of the power generation unit at the current moment is:

[0082] P FCss (t) = P FCSSReal (t-1)+P σ2

[0083] When the hydrogen pressure is between [Press min ,Press max ], the power demand of the power generation unit at the current moment remains unchanged:

[0084] P FCSS (t) = P FCSSReal (t-1)

[0085] When the hydrogen pressure is lower than Press minWhen , the power demand of the power generation unit at the current moment is:

[0086] P FCSS (t) = P FCSＳReal (t-1)-P σ2

[0087] Among them, P FCSSReal is the actual power of the power generation unit, is the actual power of a fuel cell in use, P FCSS (t) is the power demand of the power generation unit at time t, P FCSSReal (t-1) is the actual power of the power generation unit at the previous moment, P σ2 Calibrate the value for a smaller power step.

[0088] Through the dynamic operating point adjustment control method described above, continuous adaptive dynamic adjustment is performed to control the balance between the power generation power of the power generation unit and the hydrogen pressure at its front end, thereby achieving a balance between the power supply and demand of hydrogen production-power generation-energy storage-power consumption.

[0089] The method for determining the mapping relationship between the operating point of the hydrogen production unit and the number of fuel cells required to be turned on by the power generation unit in step 3 of the steady-state operating point control method is characterized by comprising the following steps:

[0090] Step 1: The hydrogen production unit is tested separately to obtain the stable flow rate of hydrogen produced at different working points, and a mapping relationship between the working set point of the hydrogen production unit and the steady-state hydrogen production flow rate is obtained.

[0091] Step 2: Joint debugging of the hydrogen production unit and the power generation unit, testing the hydrogen production unit at different working points to produce stable hydrogen, the power generation unit completely consumes the stable flow of hydrogen, and the maximum power generation that can be achieved, and obtain the mapping relationship between the steady-state hydrogen production flow and the maximum power generation of the power generation unit, thereby obtaining the reference target power P of the power generation unit. FCSSTar The empirical mapping relationship between the set operating point of the hydrogen production unit.

[0092] Step 3: Based on the number of fuel cells configured in the power generation unit and the fuel cell high-efficiency power generation area, the optimal number of fuel cells to be started under the reference target power of the power generation unit is set. The following mapping relationship is obtained.

[0093] (f HGSS ,n)=Tab(P FCSSTar )

[0094] The principle of the three-hybrid linkage control method of a hydrogen energy backup power station described in this application is essentially to reasonably allocate the safe working range and working matching range of each system based on the characteristics of each system.

[0095] The hydrogen production unit uses methanol reforming to produce hydrogen. This equipment has the characteristics of long startup time, slow hydrogen production rate response, difficulty in frequent flow adjustment, and difficult flow stability. It is suitable for long-term stable operation after parameter debugging is completed. This does not meet the rapid response requirements of the backup power station and needs to be supplemented by energy storage units and power generation units. In terms of response rate, hydrogen production is much slower than fuel cell power generation, which is slower than energy storage batteries. When there is no hydrogen production during hydrogen production, the load and the power station's self-consumption are supplemented by energy storage batteries. When hydrogen is produced during hydrogen production, the power generation unit is required to match the flow fluctuations of the hydrogen production unit as much as possible to consume hydrogen and convert it into electrical energy, and keep the pressure of the pressure gauge at the front end of the power generation unit stable.

[0096] The power generation unit consists of multiple fuel cells connected in parallel. In addition to meeting the load and the power plant's own consumption, the power generation unit must also replenish the energy storage unit as quickly as possible to keep it fully charged.

[0097] The energy storage unit has two main functions: first, to supply power to the load and the power station's own consumption (including the startup power consumption of the hydrogen production unit) during power station startup; second, to provide a steady flow of power during fuel cell power generation. Battery discharge and charging operations must ensure operation within the optimal SOC range. This optimal SOC range maximizes the battery's charge / discharge rate characteristics and emergency response capabilities, providing these characteristics to the power station.

[0098] Example

[0099] The embodiments of the present invention will be described in detail below. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0100] Example 1

[0101] According to the scheme provided in this application, a three-mix configuration of a hydrogen power station is produced. The principle of the hydrogen power station is as follows: Figure 1 , including a hydrogen production unit 1, a power generation unit 2, an energy storage unit 3, a regulating valve 7, an internal pressure gauge 8 of the hydrogen production unit, a front-end pressure gauge 9 of the power generation unit, etc.

[0102] Hydrogen production unit 1 uses a methanol reforming hydrogen production unit. This unit is debugged separately. Several operating points are set for the required flow rate of the methanol reforming hydrogen production unit. Its steady-state hydrogen production flow rate is calibrated at each operating point. After the three-hybrid system is connected, power generation unit 2 is operated at the above operating points. The corresponding maximum power generation power of the fuel cell system and the number of fuel cells required to be turned on are calibrated, resulting in the following mapping relationship:

[0103] (f HGSS ,n)=Tab(P FCSSTar )

[0104] When the triple hybrid system is put into use, its control logic is implemented as follows, including the steady-state operating point control method and the dynamic operating point control method.

[0105] The steady-state operating point control method is used to calculate the hydrogen production demand operating point of hydrogen production unit 1 and the number of fuel cells required to be turned on in power generation unit 2: the power station self-consumption power P St =80kW, load real-time power demand P Load =240kW, maximum allowable power generation of each fuel cell system 4-6 Energy storage unit 3 maximum allowable charging power P BASSChargPermitMax = 200kW, the number of available fuel cells 4-6 is N = 4. The current maximum required power P of power generation unit 2 is obtained FCSSReqMax =520kW, the maximum allowable power generation unit P FCSSPermitMax =340kW. At this time, the SOC of the energy storage unit 3 is 80%, and the reference target power of the power generation unit P is obtained. FCSSTar =340kW. Based on the reference target power P of power generation unit 2 FCSSTar =340kW, and the hydrogen production working point f of hydrogen production unit 1 is obtained by mapping the power generation reference target power with the hydrogen production demand working point. HGSS =60%; through the mapping relationship between the reference target power generation and the number of fuel cells required to be turned on in the power generation unit 2, the number of fuel cells required to be turned on in the power generation unit 2 is obtained as n=4;

[0106] The real-time power demand of the power generation unit 2 is calculated by the dynamic working point control method: after the hydrogen production unit is in hot standby, it gradually produces hydrogen and builds up pressure. When the pressure of the pressure gauge 8 inside the hydrogen production unit 1 reaches the threshold of 12 bar, the regulating valve 7 is opened to output hydrogen to the power generation unit 2; when the pressure at the front end of the power generation unit 2 reaches 12.2 bar, the four fuel cell systems 4-6 are simultaneously at the idle power of each unit. At startup, the initial value of the real-time power demand of the power generation unit is The actual power of the power generation unit is P FCSSReal =20kW; the control system enters the dynamic adaptive adjustment stage: when the pressure of the pressure gauge 9 at the front end of the power generation unit is ≥12.2bar, the real-time required power of the power generation unit 2 is set to P FCSS (t) = 22kW; the hydrogen flow rate of hydrogen production unit 1 gradually increases, and power generation unit 2 continuously and dynamically adjusts the real-time power demand; when the pressure of pressure gauge 9 at the front end of power generation unit 2 is ≤ 11.8 bar, the actual power of power generation unit P collected is FCSS (t) = 346kW, the current real-time power demand of power generation unit 2 is set to P FCSS (t) = 344kW; continuous dynamic adjustment to always maintain a balance between the hydrogen consumption of the power generation unit 2 and the stable hydrogen delivery pressure at the front end.

[0107] The above description of the embodiments is intended to facilitate understanding and application of the present application by those skilled in the art. It will be apparent that those skilled in the art can readily make various modifications to these embodiments and apply the general principles described herein to other embodiments without expending any creative effort. Therefore, the present application is not limited to the embodiments described herein, and improvements and modifications made by those skilled in the art based on the disclosure of this application without departing from the scope and spirit of this application are within the scope of this application.

Claims

1. A power generation control method for a distributed hydrogen power station, wherein the hydrogen power station comprises a methanol hydrogen production unit, a power generation unit, an energy storage unit, and a centralized control unit for controlling the operation of the methanol hydrogen production unit, the power generation unit, and the energy storage unit. The hydrogen production unit is connected to the power generation unit and provides hydrogen to the power generation unit. The power generation unit comprises multiple fuel cells. The electricity generated by the power generation unit is used to power the hydrogen power station, store in the energy storage unit, and supply electricity to power users. The method is characterized in that: The control method includes a steady-state operating point control method and a dynamic operating point control method, wherein: The steady-state operating point control method comprises the following steps: (1) Calculating the current maximum required power and the maximum allowable power generation capacity of the power generation unit; (2) Determine the reference target power of the power generation unit based on the remaining battery power; (3) Check the table to determine the working point of the hydrogen production unit and the number of fuel cells required to be turned on in the power generation unit; The dynamic operating point control method comprises the following steps: (a) When the hydrogen production unit completes hot standby, the hydrogen pressure at the inlet of the power generation subsystem reaches the allowable operating range of the power generation subsystem pressure When the electronic system is at idle speed Start n fuel cell systems; (b) Real-time and periodic determination of whether the current hydrogen pressure is within the permitted operating pressure range, so as to fuzzy match the real-time power demand of the power generation unit.

2. The power generation control method for a distributed hydrogen power station according to claim 1, characterized in that: The number of configured fuel cells in the power generation unit ≥ the number of available units N ≥ the number of required units n ≥ 1.

3. The power generation control method for a distributed hydrogen power station according to claim 1, characterized in that: In step (1) of the steady-state operating point control method, ， ， in, is the current maximum required power of the power generation unit, is the real-time self-consumption power of the hydrogen power station during steady-state power generation, is the current maximum allowable charging power of the energy storage unit of the hydrogen energy power station, The real-time power demand of the load, is the maximum allowable power generation capacity of the hydrogen power station power generation unit, is the maximum allowable power generation of each available fuel cell, and N is the number of available fuel cells.

4. The power generation control method for a distributed hydrogen power station according to claim 3, characterized in that: In step (2) of the steady-state operating point control method, determining the reference target power of the power generation unit includes: When the battery SOC is lower than SOC1: ； When the battery SOC is within the range of [SOC1, SOC2]: ； When the battery SOC is higher than SOC2: ； Among them, SOC is the real-time remaining power of the energy storage unit, SOC1 is the lower limit of the remaining power threshold of the energy storage unit partition, and SOC2 is the upper limit of the remaining power threshold of the energy storage unit partition. is the reference target power of the power generation unit, A smaller power rating used to ensure safe battery charging and discharging.

5. The power generation control method for a distributed hydrogen power station according to claim 1, characterized in that: In step (3) of the steady-state operating point control method, ， in, The working point is set for the hydrogen production unit and sent to the hydrogen production unit by the centralized control unit; the hydrogen production unit performs hot standby and operation according to the set working point, n is the number of fuel cells required to be turned on by the power generation unit, and the working point set for the hydrogen production unit and the number of fuel cells required to be turned on by the power generation unit are consistent with the reference target power of the power generation unit. The mapping relationship between them is the empirical value measured in the calibration stage.

6. The power generation control method for a distributed hydrogen power station according to claim 1 or 5, characterized in that: The table is consulted to determine the operating point of the hydrogen production unit and the number of fuel cells required to be turned on in the power generation unit, including the following steps: Step 1: testing the stable flow rate of hydrogen produced by the hydrogen production unit at different operating points separately to obtain a mapping relationship between the operating set point of the hydrogen production unit and the steady-state hydrogen production flow rate; Step 2: Jointly debug the hydrogen production unit and the power generation unit to test the hydrogen production unit's stable hydrogen production at different operating points, the maximum power generation that can be achieved by the power generation unit completely absorbing the stable flow of hydrogen, and obtain the mapping relationship between the steady-state hydrogen production flow and the maximum power generation of the power generation unit; Step 3: Obtain the reference target power of the power generation unit through steps 1 and 2 Empirical mapping relationship between the set working point and the hydrogen production unit; Step 4: Based on the number of fuel cells configured for the power generation unit and the fuel cell high-efficiency power generation area, set the optimal number of fuel cells to be started under the reference target power of the power generation unit.

7. The power generation control method for a distributed hydrogen power station according to claim 1, characterized in that: In step (a) of the dynamic working point control method, when the hydrogen production unit completes hot standby and the hydrogen pressure at the inlet of the power generation subsystem reaches the allowable working range of the power generation subsystem pressure, When the electronic system is at idle speed Start n fuel cell systems: ， in, is the idle power of the fuel cell in the power generation unit, is the initial power generation power of the current power generation unit.

8. The power generation control method for a distributed hydrogen power station according to claim 1 or 7, characterized in that: When the hydrogen power station is just turned on, the hydrogen production unit gradually produces hydrogen, and the hydrogen transportation channel between the hydrogen production unit and the power generation unit is first disconnected until the accumulated hydrogen reaches the opening threshold pressure, and the hydrogen transportation channel between the hydrogen production unit and the power generation unit is connected.

9. The power generation control method for a distributed hydrogen power station according to claim 7, characterized in that: The initial value of the fuel cell starting power is its idle power. The idle power is a smaller power that the amount of electricity generated by the fuel cell meets the power consumption of the fuel cell's own accessories and does not require power consumption by equipment outside the power generation system. Alternatively, the initial value of the fuel cell starting power is customized by the fuel cell manufacturer.

10. The power generation control method for a distributed hydrogen power station according to claim 1, characterized in that: In step (b) of the dynamic operating point control method, real-time and periodic determination of whether the current hydrogen pressure is within the pressure allowable operating range is performed to fuzzy match the real-time power demand of the power generation unit, including the following steps: ， When the hydrogen pressure is higher than hour: ， When the hydrogen pressure is between [ Between: ， When the hydrogen pressure is lower than hour: ， in, is the actual power of the power generation unit, is the actual power of the fuel cell in use, is the required power of the power generation unit at time t, is the actual power of the power generation unit at the last moment, It is a power step calibration value.

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