A fuel cell power generation control system and method

Abstract

The present application discloses a fuel cell power generation control system and method, which relates to the field of power technology. The system includes: a revenue calculation module that calculates the power generation state revenue and the hot standby state revenue under each time-of-use electricity price; a time period determination module that determines a first time period when the power generation state revenue is greater than the hot standby state revenue, and determines a second time period when the power generation state revenue is less than the hot standby state revenue; a load increase control module that determines a load increase revenue curve from the second time period to the first time period, and controls the fuel cell to increase the power generation according to the load increase revenue curve; a load decrease control module that determines a load decrease revenue curve from the first time period to the second time period, and controls the fuel cell to reduce the power generation according to the load decrease revenue curve; a target power generation module that determines the power generation corresponding to the end time of the load increase revenue curve as the target power, and generates power at the target power from the end time of the load increase revenue curve to the start time of the load decrease revenue curve, which can improve the power generation efficiency and reduce fuel waste.

Description

Technical Field

[0001] This application relates to the field of power technology, and in particular, to a fuel cell power generation control system and method. Background Art

[0002] A fuel cell is an electrochemical device that can directly convert the chemical energy stored in a fuel and an oxidant into electrical energy. Since the 1940s, there have been four generations of fuel cells developed so far. The solid oxide fuel cell (SOFC) is the third generation of fuel cells, which has the advantages of high power generation efficiency, strong fuel adaptability, and recoverable high-temperature waste heat.

[0003] Currently, the fuel cell power generation mode is to continuously generate power at a target power. Generating power at the target power during the low electricity consumption period will cause redundancy and waste fuel. Summary of the Invention

[0004] The main purpose of the embodiments of this application is to propose a fuel cell power generation control system and method to improve the power generation efficiency of the fuel cell and reduce fuel waste.

[0005] To achieve the above object, on the one hand, an embodiment of this application proposes a fuel cell power generation control system, and the system includes:

[0006] A revenue calculation module, configured to calculate the power generation state revenue and the hot standby state revenue under each time-of-use electricity price;

[0007] A time period determination module, configured to determine the time period when the power generation state revenue is greater than the hot standby state revenue as the first time period, and determine the time period when the power generation state revenue is less than the hot standby state revenue as the second time period;

[0008] A load increase control module, configured to determine a load increase revenue curve from the second time period to the first time period, and control the fuel cell to increase the power generation power according to the load increase revenue curve;

[0009] A load decrease control module, configured to determine a load decrease revenue curve from the first time period to the second time period, and control the fuel cell to reduce the power generation power according to the load decrease revenue curve;

[0010] A target power generation module, configured to determine the power generation power corresponding to the end moment of the maximum load increase revenue curve as the target power, and control the fuel cell to generate power at the target power from the end moment of the maximum load increase revenue curve to the start moment of the maximum load decrease revenue curve.

[0011] In some embodiments, the power generation state revenue is equal to the electricity sales revenue minus the gas cost in the power generation state;

[0012] The revenue in the hot standby state is equal to zero minus the gas cost in the hot standby state.

[0013] In some embodiments, the revenue in the power generation state is equal to the electricity sales revenue plus the heat sales revenue in the power generation state minus the gas cost in the power generation state;

[0014] The revenue in the hot standby state is equal to the heat sales revenue in the hot standby state minus the gas cost in the hot standby state.

[0015] In some embodiments, the load increase control module includes:

[0016] A load increase revenue calculation unit, configured to use the start time of the first time period as a reference point for the load increase end time, and obtain the load increase revenue curve as a linear function according to the reference point of the load increase end time and the maximum allowable load increase speed of the system;

[0017] A load increase time determination unit, configured to determine the load increase time according to the load increase revenue curve;

[0018] A load increase start time determination unit, configured to determine the load increase start time of the load increase time;

[0019] A load increase power generation unit, configured to control the fuel cell to start generating power at the load increase start time.

[0020] In some embodiments, the load increase revenue calculation unit includes:

[0021] A load increase revenue calculation subunit, configured to calculate the revenue curves corresponding to reaching the load increase end time in each candidate time period according to the linear function;

[0022] The load increase time determination unit includes:

[0023] A load increase time determination subunit, configured to determine the candidate time period corresponding to the revenue curve with the maximum revenue as the load increase time.

[0024] In some embodiments, the load increase start time determination unit is further configured to determine the time before the load increase start time as the early power generation time, and determine the time after the load increase start time as the delayed power generation time;

[0025] The system further includes:

[0026] A load increase revenue comparison module, configured to calculate the load increase power generation revenues starting from the early power generation time, the load increase start time, and the delayed power generation time respectively; wherein, the duration of the load increase power generation is the load increase time.

[0027] The load-lifting power generation unit is further configured to control the fuel cell to start generating power at the start power generation moment corresponding to the maximum load-lifting power generation benefit.

[0028] In some embodiments, the load-dropping control module includes:

[0029] A load-dropping benefit calculation unit, configured to use the start moment of the second time period as a reference point for the load-dropping end moment, and obtain the load-dropping benefit curve according to the reference point of the load-dropping end moment and the maximum allowable load-lifting speed of the system by means of a linear function;

[0030] A load-dropping time determination unit, configured to determine the load-dropping time according to the load-dropping benefit curve;

[0031] A load-dropping start moment determination unit, configured to determine the load-dropping start moment of the load-dropping time;

[0032] A load-dropping power generation unit, configured to control the fuel cell to reduce the power generation power at the load-dropping start moment until the load-dropping power is reached.

[0033] In some embodiments, the load-dropping benefit calculation unit includes:

[0034] A load-dropping benefit calculation subunit, configured to calculate the benefit curve corresponding to reaching the load-dropping end moment in each candidate time period according to the linear function;

[0035] The load-dropping time determination unit includes:

[0036] A load-dropping time determination subunit, configured to determine the candidate time period corresponding to the benefit curve with the maximum benefit as the load-dropping time.

[0037] In some embodiments, the load-dropping start moment determination unit is further configured to determine the moment before the load-dropping start moment as the early load-dropping moment, and determine the moment after the load-dropping start moment as the late load-dropping moment;

[0038] The system further includes:

[0039] A load-dropping benefit comparison module, configured to calculate the load-dropping power generation state benefits of starting load-dropping power generation from the early load-dropping moment, the load-dropping start moment, and the late load-dropping moment respectively; wherein, the duration of the load-dropping power generation is the load-dropping time;

[0040] The load-dropping power generation unit is further configured to control the fuel cell to reduce the power generation power at the load-dropping start moment corresponding to the maximum load-dropping power generation state benefit until the load-dropping power is reached.

[0041] In some embodiments, the system further includes:

[0042] A load increase control unit, configured to set an interval of 0.5 h before and after the load increase revenue curve as a load increase area after determining the load increase revenue curve, and perform load increase power generation within the load increase area;

[0043] A load decrease control unit, configured to set an interval of 0.5 h before and after the load decrease revenue curve as a load decrease area after determining the load decrease revenue curve, and perform load decrease power generation within the load decrease area.

[0044] In some embodiments, the system further includes: a total revenue calculation module, configured to calculate the total revenue of the fuel cell;

[0045] The total revenue calculation module includes:

[0046] A power revenue calculation unit, configured to obtain a total power curve and a time-of-use electricity price curve within 24 hours, and calculate a power revenue according to the total power curve and the time-of-use electricity price curve;

[0047] The calculation formula of the power revenue is:

[0048]

[0049] where Pr is the power revenue, Ge is the total power curve, and P is the time-of-use electricity price curve;

[0050] A fuel cost calculation unit, configured to calculate the gas cost of the fuel cell within the 24 hours;

[0051] The calculation formula of the gas cost is:

[0052]

[0053] where Fc is the gas cost, Pf is the gas price, Yb is the coefficient for converting the standard condition gas flow into the working condition natural gas flow, and Fu is the gas consumption vector curve;

[0054] A net revenue calculation unit, configured to calculate the net revenue of the fuel cell within the 24 hours according to the power revenue and the fuel cost;

[0055] The calculation formula of the net revenue is:

[0056]

[0057] where Tr is the net revenue, C1 is the fixed cost of the fuel cell, and C2 is the maintenance cost per unit power generation of the fuel cell.

[0058] To achieve the above object, another aspect of the embodiments of the present application provides a fuel cell power generation control method, and the method includes the following steps:

[0059] Calculate the power generation state revenue and the heat standby state revenue under each time-of-use electricity price;

[0060] Determine the time period when the power generation state revenue is greater than the heat standby state revenue as the first time period, and determine the time period when the power generation state revenue is less than the heat standby state revenue as the second time period;

[0061] Determine the load increase revenue curve from the second time period to the first time period, and control the fuel cell to increase the power generation power according to the load increase revenue curve;

[0062] Determine the load decrease revenue curve from the first time period to the second time period, and control the fuel cell to decrease the power generation power according to the load decrease revenue curve;

[0063] Determine the power generation power corresponding to the end moment of the load increase revenue curve as the target power, and control the fuel cell to generate power at the target power from the end moment of the load increase revenue curve to the start moment of the load decrease revenue curve.

[0064] To achieve the above object, on the other hand, an embodiment of the present application provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the above method is implemented.

[0065] To achieve the above object, on the other hand, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the above method is implemented.

[0066] The embodiments of the present application at least include the following beneficial effects:

[0067] This application includes a revenue calculation module for calculating the power generation status revenue and the hot standby status revenue under different time-of-use electricity prices; a time period determination module for determining the time period when the power generation status revenue is greater than the hot standby status revenue as the first time period, and determining the time period when the power generation status revenue is less than the hot standby status revenue as the second time period; a load increase control module for determining the load increase revenue curve from the second time period to the first time period, and controlling the fuel cell to increase the power generation according to the load increase revenue curve; a load decrease control module for determining the load decrease revenue curve from the first time period to the second time period, and controlling the fuel cell to decrease the power generation according to the load decrease revenue curve; a target power power generation module for determining the power generation corresponding to the end time of the load increase revenue curve as the target power, and controlling the fuel cell to generate power at the target power from the end time of the load increase revenue curve to the start time of the load decrease revenue curve. By determining the revenue curves of the power generation status revenue and the hot standby status revenue through time-of-use electricity prices, and then performing load increase and load decrease according to the corresponding revenue curves, the power generation during the peak electricity consumption period can be increased and the power generation during the low electricity consumption period can be reduced, thereby improving the power generation efficiency of the fuel cell and reducing the waste of fuel. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0069] Figure 1 It is a schematic structural diagram of a fuel cell power generation control system provided by an embodiment of the present application;

[0070] Figure 2 It is an example diagram of real-time electricity price and power curve provided by an embodiment of the present application;

[0071] Figure 3 It is a working flow chart of a fuel cell power generation control system provided by an embodiment of the present application;

[0072] Figure 4 It is a schematic flow chart of a fuel cell power generation control method provided by an embodiment of the present application;

[0073] Figure 5 It is a schematic hardware structure diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0074] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the embodiments of the present application. They are only examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the appended claims.

[0075] It can be understood that the terms "first", "second", etc. used in the present application can be used in this document to describe various concepts, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of the embodiments of the present application, the first information can also be referred to as the second information. Similarly, the second information can also be referred to as the first information. Depending on the context, the words "if", "when" as used herein can be interpreted as "when...", "when...", or "in response to a determination".

[0076] The terms "at least one", "multiple", "each", "any one", etc. used in the present application, at least one includes one, two or more than two, multiple includes two or more than two, each refers to each of the corresponding multiple, and any one refers to any one of the multiple.

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0078] Before the embodiments of the present application are described in detail, the related technologies, some nouns and terms involved in the embodiments of the present application will be described first. The related technologies, nouns and terms involved in the embodiments of the present application are applicable to the following explanations:

[0079] Solid oxide fuel cell power generation needs to be carried out at a relatively high temperature, usually in the range of 800-1000 °C. When not generating electricity, it is not advisable to cool it down, and it should be stably maintained within a temperature range (i.e., heat preservation) so as to generate electricity at any time. If it is cooled down when not generating electricity, then when power generation is required, the temperature of the fuel cell cannot be raised to the power generation temperature within a short time. Therefore, it is necessary to maintain the temperature of the fuel cell when not generating electricity.

[0080] The power generation state revenue refers to the revenue obtained by the fuel cell when operating in the power generation state, and the hot standby state revenue refers to the revenue obtained by the fuel cell when operating in the heat preservation state.

[0081] Ramping up refers to the process of the fuel cell from the thermal insulation state to the target power state, and ramping down refers to the process from the target power state to the thermal insulation state.

[0082] Referring to Figure 1 , an embodiment of the present application provides a fuel cell power generation control system, which includes:

[0083] A revenue calculation module for calculating the power generation state revenue and the thermal standby state revenue at each time-of-use electricity price;

[0084] A time period determination module for determining the time period when the power generation state revenue is greater than the thermal standby state revenue as the first time period, and determining the time period when the power generation state revenue is less than the thermal standby state revenue as the second time period;

[0085] A ramping up control module for determining the ramping up revenue curve from the second time period to the first time period, and controlling the fuel cell to increase the power generation according to the ramping up revenue curve;

[0086] A ramping down control module for determining the ramping down revenue curve from the first time period to the second time period, and controlling the fuel cell to reduce the power generation according to the ramping down revenue curve;

[0087] A target power power generation module for determining the power generation corresponding to the end moment of the ramping up revenue curve as the target power, and controlling the fuel cell to generate power at the target power from the end moment of the ramping up revenue curve to the start moment of the ramping down revenue curve.

[0088] Specifically, the ramping up revenue curve and the ramping down revenue curve are respectively the revenue curves corresponding to the fuel cell during the ramping up process and the ramping down process; the end moment of the ramping up revenue curve is the ramping up end moment t1, and the start moment of the ramping down revenue curve is the ramping down start moment t2; the ramping up start moment is the moment when ramping up starts from the non-power generation state, and the ramping down start moment is the moment when ramping down starts from the target power.

[0089] It can be understood that the electricity demand has peak periods and off-peak periods, and the electricity price changes with time. Therefore, the power generation state revenue will change with time. The revenue calculation module can calculate the power generation state revenue and the thermal standby state revenue at each time-of-use electricity price.

[0090] In this embodiment, the fuel cell is controlled with a set time period as a cycle. A cycle can be one day, one week or one month, and the specific duration can be freely set according to the actual situation.

[0091] Exemplarily, this embodiment is described with one day (24 hours) as a cycle: the revenue calculation module traverses the power generation state revenue and the hot standby state revenue for twenty-four hours, and the time period determination module determines the first time period when the power generation state revenue is greater than the hot standby state revenue and the second time period when the power generation state revenue is less than the hot standby state revenue. Then, the load increase control module determines the load increase revenue curve from the second time period to the first time period, and the load decrease control module determines the load decrease revenue curve from the first time period to the second time period, so as to obtain the optimal timing of fuel cell load increase and load decrease, improve power generation efficiency and reduce fuel waste.

[0092] Wherein, after the fuel cell's power generation operation is loaded up to the target power, the target power generation module controls the fuel cell to generate power at the target power until the load decrease start time t2 is reached, and then the load decrease control module gradually reduces the power generation power of the fuel cell to the heat preservation state.

[0093] Furthermore, the load increase control module includes:

[0094] The load increase revenue calculation unit is used to use the start time of the first time period as the reference point for the load increase end time, and obtain the load increase revenue curve with a linear function according to the reference point of the load increase end time and the maximum allowable load increase speed of the system;

[0095] The load increase time determination unit is used to determine the load increase time according to the load increase revenue curve;

[0096] The load increase start time determination unit is used to determine the load increase start time of the load increase time;

[0097] The load increase power generation unit is used to control the fuel cell to start generating power at the load increase start time.

[0098] Even further, the load increase revenue calculation unit includes:

[0099] The load increase revenue calculation subunit is used to calculate the revenue curve corresponding to reaching the load increase end time under each candidate time period according to the linear function;

[0100] The load increase time determination unit includes:

[0101] The load increase time determination subunit is used to determine the candidate time period corresponding to the revenue curve with the maximum revenue as the load increase time.

[0102] The load increase control module of this embodiment can compare the power generation state revenue and the hot standby state revenue under each time-of-use electricity price, obtain the load increase revenue curve, and generate power according to the load increase revenue curve.

[0103] Specifically, since a fuel cell cannot instantaneously reach the specified power (target power) and the time-of-use electricity price changes at any time, the load-up time will affect the power generation state revenue. For example, the power generation state revenue at 6 o'clock and 7 o'clock is less than the hot standby state revenue, and the power generation state revenue at 8 o'clock is greater than the hot standby state revenue. At this time, if 8 o'clock is selected as the time point for the target power, and if the power generation state revenue is the highest when generating electricity at 50% of the target power at 7 o'clock, the load-up time can be selected as 2 hours; if the hot standby state revenue is the highest at 7 o'clock, the load-up time can be selected as 1 hour.

[0104] Specifically, when converting from the second time period to the first time period, obtain the maximum load-up revenue curve, where the start time of the first time period in the traversal process is used as the time point for the target power (load-up end time t1), and then determine the time for changing from the heat preservation state to the target power state through the power generation interval, that is, the load-up time: first determine the linear function, and then determine the load-up time (1h, 2h, 3h, 4h), so as to obtain different power generation intervals.

[0105] The linear function can be a direct proportional function or a piecewise function. In this embodiment, a direct proportional function can be selected.

[0106] To make this embodiment clearer, an example is given. For example, when the time point for determining the target power (load-up end time t1) and the linear function is a direct proportional function, and then the candidate time periods are selected as 1h, 2h, 3h, and 4h respectively, calculate the revenue obtained by the fuel cell under the 4 candidate time periods by integration respectively, and select the candidate time period corresponding to the maximum revenue as the load-up time for the fuel cell to change from the heat preservation state to the target power state.

[0107] Furthermore, the load-up start time determination unit is further configured to determine the time before the load-up start time as the early power generation time, and determine the time after the load-up start time as the delayed power generation time;

[0108] The system further includes:

[0109] A load-up revenue comparison module, configured to calculate the load-up power generation revenues for starting load-up power generation from the early power generation time, the load-up start time, and the delayed power generation time respectively; wherein, the duration of the load-up power generation is the load-up time;

[0110] The load-up power generation unit is further configured to control the fuel cell to start generating electricity at the start power generation time corresponding to the maximum load-up power generation revenue.

[0111] Specifically, this embodiment can obtain the revenues corresponding to early power generation, on-time power generation, and delayed power generation in the power generation interval determined according to the load-up time as the load-up power generation revenue.

[0112] It should be noted that the lift time of this embodiment can be determined according to the maximum lift revenue curve, or the revenue curves corresponding to each candidate time period can be calculated by the lift revenue calculation subunit, and then screened from the above candidate time periods according to the calculated revenue curves.

[0113] Exemplarily, since the magnitudes of the power generation state revenue and the hot standby state revenue may alternate multiple times within a certain time period, this embodiment can calculate the revenue curve of this time period starting from the time point when the power generation state revenue is greater than the hot standby state revenue for the first time. For example, if the duration of this time period is one hour, this embodiment can determine the time point when the power generation state revenue is greater than the hot standby state revenue for the first time within this one hour, and calculate the revenue curve of this one hour starting from this time point. However, considering that there may be errors in calculating the revenue curve of this time period starting from the time point when the power generation state revenue is greater than the hot standby state revenue for the first time, by judging the lift moment, that is, by calculating the revenues of generating electricity in advance, on time, and postponed in the power generation interval respectively, and starting to generate electricity at the lift start moment with the maximum revenue, the error can be further reduced and the accuracy of the maximum revenue curve can be improved.

[0114] Specifically, according to the calculated optimal lift time T1 and the moment when the target power is first reached (lift end moment) t1, taking the moment of reaching the target power as the benchmark, the lift start moment of generating electricity on time is t1 - T1; the lift start moment of generating electricity in advance is t1 - T1 - 1; the lift start moment of generating electricity postponed is t1 - T1 + 1; calculate the revenues of the three power generation methods, and select the power generation mode with the maximum revenue for power generation.

[0115] Furthermore, in a fuel cell, the power generation state revenue is equal to the electricity sales revenue minus the gas cost in the power generation state; the hot standby state revenue is equal to zero minus the gas cost in the hot standby state. The electricity sales revenue is the electricity price at the current moment * the power generation amount, that is, the power generation state revenue is: the electricity price at the current moment * the power generation amount - the gas consumed in the power generation state * the gas price; the hot standby state revenue: the gas consumed in the hot standby state * the gas price. The power generation amount is the amount of electricity generated by generating electricity at the target power per unit time.

[0116] This embodiment can also be used in a fuel cell system with a waste heat recovery device. In a system with waste heat recovery, the power generation state revenue is equal to the electricity sales revenue plus the heat sales revenue in the power generation state minus the gas cost in the power generation state; the hot standby state revenue is equal to the heat sales revenue in the hot standby state minus the gas cost in the hot standby state. The electricity sales revenue is the revenue obtained by generating electricity at this electricity price. The heat sales revenue in the power generation state refers to the revenue obtained by recovering heat through the waste heat recovery device when the fuel cell is in the power generation state, and the heat sales revenue in the hot standby state refers to the revenue obtained by recovering heat through the waste heat recovery device when the fuel cell is in the hot standby state.

[0117] Among them, the electricity sales revenue is the electricity price at the current moment * the power generation amount, and the power generation amount is the electricity generated by generating electricity at the target power per unit time. The heat sales revenue in the power generation state is the heat price * the heat generated in the power generation state, and the heat sales revenue in the heat standby state is the heat price * the heat generated in the heat standby state, where the heat price is the heating price of the current city. It should be noted that due to the different power generation powers in the power generation state and the heat standby state, the generated heat will also be different, and the consumed gas volume will also be different. Therefore, the electricity sales revenue, heat sales revenue, and gas cost in the two states are also different.

[0118] Furthermore, the load reduction control module includes:

[0119] The load reduction revenue calculation unit is used to take the start time of the second time period as the reference point for the load reduction end time, and obtain the load reduction revenue curve in a linear function according to the reference point of the load reduction end time and the maximum allowable load increase speed of the system;

[0120] The load reduction time determination unit is used to determine the load reduction time according to the load reduction revenue curve;

[0121] The load reduction start time determination unit is used to determine the load reduction start time of the load reduction time;

[0122] The load reduction power generation unit is used to control the fuel cell to reduce the power generation power at the load reduction start time until the load reduction power is reached.

[0123] It should be noted that the load reduction power is the power of the fuel cell when it enters the heat preservation state, and the power in the heat preservation state is 0. At this time, the fuel cell does not generate electricity, but the fuel cell still needs to consume gas for heat preservation.

[0124] Even further, the load reduction revenue calculation unit includes:

[0125] The load reduction revenue calculation subunit is used to calculate the revenue curves corresponding to the load reduction end time in each candidate time period according to the linear function;

[0126] Even further, the load reduction time determination unit includes:

[0127] The load reduction time determination subunit is used to determine the candidate time period corresponding to the revenue curve with the maximum revenue as the load reduction time.

[0128] The difference from the embodiment of the load - raising control module described above is that the embodiment of the load - lowering control module reduces the power generation power from the target power until it reaches the heat - preservation state, while the embodiment of the load - raising control module increases the power generation power from the heat - preservation state until it reaches the target power; this embodiment can determine the time period (the second period) when the heat - standby state benefit is greater than the power - generation state benefit, and the load - lowering time when the heat - standby state benefit is greater than the power - generation state benefit. The specific implementation of this embodiment can refer to the embodiment of the load - raising control module above.

[0129] Furthermore, the load - lowering start - time determination unit is further configured to determine the time before the load - lowering start time as the early load - lowering time, and determine the time after the load - lowering start time as the late load - lowering time;

[0130] The system further includes:

[0131] The load - lowering benefit comparison module is configured to calculate respectively the load - lowering power - generation state benefits of starting to lower the power generation from the early load - lowering time, the load - lowering start time, and the late load - lowering time; wherein, the duration of the load - lowering power generation is the load - lowering time;

[0132] The load - lowering power - generation unit is further configured to control the fuel cell to reduce the power generation power until it reaches the load - lowering power at the load - lowering start time corresponding to the maximum load - lowering power - generation state benefit.

[0133] It should be noted that the load - lowering time of this embodiment can be determined according to the load - lowering maximum - benefit curve, or can be selected from the above - mentioned candidate time periods according to the benefit curves corresponding to each candidate time period in the load - lowering benefit calculation subunit.

[0134] Similarly, considering that there may be errors in determining the load - lowering end time based on the first time point when the non - power - generation power is greater than the power - generation power, by calculating respectively the benefits of early load - lowering, on - time load - lowering, and late load - lowering in the power - generation interval corresponding to the load - lowering time as the load - lowering power - generation state benefits, and starting the load - lowering power - generation state with the load - lowering start time corresponding to the maximum load - lowering power - generation state benefit, the error can be further reduced and the accuracy of the maximum - benefit curve can be improved.

[0135] Exemplarily, if the optimal load - lowering time T2 and the load - lowering start time t2 of starting to lower the load from the target power are determined, with the obtained load - lowering start time t2 as the benchmark, the end time of on - time load - lowering is t2 + T2; the end time of early load - lowering is t2 + T2 - 1; the end time of late load - lowering is t2 + T2 + 1.

[0136] Further, the system of the embodiment of the present application further includes:

[0137] The load increase control unit is used to set the interval of 0.5 hours before and after the load increase revenue curve as the load increase area after determining the load increase revenue curve, and perform load increase power generation within the load increase area;

[0138] The load decrease control unit is used to set the interval of 0.5 hours before and after the load decrease revenue curve as the load decrease area after determining the load decrease revenue curve, and perform load decrease power generation within the load decrease area.

[0139] Considering that there may be some demand changes during the actual system operation. For example, during the load increase or load decrease process, it is necessary to temporarily maintain the current power for a period of time, and then start load increase power generation or load decrease power generation after maintaining for a period of time. Therefore, after determining the load increase revenue curve or the load decrease revenue curve, changes will be made according to the demand within the load increase area or the load decrease area, and cooperating with the demand changes may reduce part of the power generation revenue.

[0140] The system of the embodiment of the present application can still obtain relatively high revenue through the 0.5-hour interval setting while cooperating with demand changes.

[0141] Furthermore, the system of the embodiment of the present application further includes:

[0142] The total revenue calculation module is used to calculate the total revenue of the fuel cell.

[0143] It can be understood that the total revenue calculation module of this embodiment can calculate the total power generation revenue of the fuel cell after being controlled by the power generation control system.

[0144] Even further, the total revenue calculation module includes:

[0145] The power revenue calculation unit is used to obtain the total power curve and the time-of-use electricity price curve within 24 hours, and calculate the power revenue according to the total power curve and the time-of-use electricity price curve;

[0146] The calculation formula for the power revenue is:

[0147]

[0148] where Pr is the power revenue, Ge is the total power curve, and P is the time-of-use electricity price curve;

[0149] The fuel cost calculation unit is used to calculate the gas cost of the fuel cell within the 24 hours;

[0150] The calculation formula for the gas cost is:

[0151]

[0152] Among them, Fc is the gas cost, Pf is the gas price, Yb is the coefficient for converting the standard-condition gas flow rate to the working-condition natural gas flow rate, and Fu is the gas consumption vector curve;

[0153] A net income calculation unit is configured to calculate the net income of the fuel cell within the 24 hours according to the power income and the fuel cost;

[0154] The calculation formula for the net income is as follows:

[0155]

[0156] Among them, Tr is the net income, C1 is the fixed cost of the fuel cell, and C2 is the maintenance cost per unit power generation of the fuel cell.

[0157] Specifically, after the fuel cell ramps up to the target power, it generates electricity at the target power and lasts for a period of time, and then ramps down. That is, when the ramp-up power curve and the ramp-down power curve are determined, it generates electricity at the target power state between the ramp-up power curve and the ramp-down power curve. At this time, calculate the trapezoidal area integrated by the ramp-up power curve, the target power straight line, and the ramp-down power curve (as shown in the example figure Figure 2 shown), and this trapezoidal area is the total power generation. Figure 2 In the formula, t1 is the time point of the target power (the end moment of ramp-up); t2 is the time point of starting to reduce the power generation (the start moment of ramp-down).

[0158] The calculation formula for calculating the total income includes:

[0159] 1. Calculate the total power generation income (i.e., the power income):

[0160] Among them, Pr is the power income, Ge is the calculated total power curve, that is, the curve integrated by the ramp-up power curve, the target power straight line, and the ramp-down power curve; P is the time-of-use electricity price curve.

[0161] 2. Calculate the total gas consumption (the actual consumption cost of gas):

[0162] Among them, Fc is the gas cost, Pf is the gas price, Yb is the coefficient for converting the standard-condition gas flow rate to the working-condition natural gas flow rate; Fu is the gas consumption vector curve, that is, the fuel consumed in real time, and the greater the power, the more fuel is consumed.

[0163] 3. Calculate the net income:

[0164] Among them, C1 is the fixed cost of the fuel cell, and C2 is the maintenance cost per unit power generation of the fuel cell.

[0165] According to the net profit Tr, the current profit obtained by the fuel cell operating according to the total power curve can be obtained.

[0166] In the embodiment of the present application, by traversing each time-of-use electricity price, calculating the power generation state profit and the heat standby state profit under each time-of-use electricity price, and obtaining the maximum load increase profit curve when the profit of the first power generation state is greater than the profit of the heat standby state at a certain time-of-use electricity price. Similarly, when the profit of the first heat standby state is greater than the profit of the power generation state at a certain time-of-use electricity price after load increase, the maximum load decrease profit curve is obtained, so as to realize that the fuel cell generates electricity (increases load) when the time-of-use electricity price is high and keeps warm (decreases load) when the time-of-use electricity price is low, further reducing the power generation cost of the fuel cell and improving the power generation efficiency.

[0167] Next, specific application examples will be combined to introduce and illustrate the solution of the embodiment of the present application in detail:

[0168] Refer to Figure 3 , this embodiment provides a working flow chart of a fuel cell power generation control system. The working process of the system includes:

[0169] Specifically, the fuel cost calculation unit calculates the gas cost of the fuel cell within 24 hours and initializes the gas consumption vector curve.

[0170] The profit calculation module compares the profit of the power generation state and the profit of not generating electricity (keeping warm) at each time point under the time-of-use electricity price to determine whether to generate electricity; the calculation of the profit of the power generation state under the time-of-use electricity price: the current electricity price * the power generation power - the gas consumed by the target power generation * the gas price; the profit of the heat standby state (heat preservation loss) under the time-of-use electricity price: the gas consumed in the heat preservation state * the gas price. When the profit of the power generation state is greater than the heat preservation loss, power generation is selected.

[0171] The time period determination module determines the moment when the profit of the first power generation state is greater than the profit of the heat standby state as the load increase end time t1. Based on the load increase end time t1, the load increase profit calculation sub-unit obtains the profits of different candidate time periods and selects the candidate time period with the maximum profit as the load increase time from the heat preservation state to the target power state; the candidate time periods T1 are selected as 1h, 2h, 3h, and 4h respectively, and the profits obtained by generating electricity in the 4 candidate time periods T1 are calculated by integration respectively, and the candidate time period corresponding to the maximum profit is selected as the load increase time of the fuel cell from the heat preservation state to the target power state.

[0172] Based on the lift gain calculation subunit, the lift time T1 is calculated. Taking the lift end time t1 determined by the time period determination module as the benchmark, the lift start time for on-time power generation is t1 - T1; the lift start time for early power generation is t1 - T1 - 1; the lift start time for delayed power generation is t1 - T1 + 1; the lift gain comparison module calculates the gains of the three types of power generation, and the lift power generation unit selects the power generation mode with the maximum gain for power generation.

[0173] Specifically, the revenue calculation module compares the revenue of the power generation status at each time point under the time-of-use electricity price with the revenue of not generating electricity (thermal insulation), and decides whether not to generate electricity; the calculation of the revenue of the power generation status under the time-of-use electricity price: the electricity price at the current moment * the power generation power - the gas consumed for power generation at the target power * the gas price; the revenue of the hot standby status (thermal insulation loss) under the time-of-use electricity price: the gas consumed in the thermal insulation state * the gas price. When the revenue of the power generation status is less than the thermal insulation loss, no power generation is carried out, and the non-power generation time is t2.

[0174] The time period determination module determines the moment when the revenue of the first hot standby status is greater than the revenue of the power generation status as the downshift end time. Based on the downshift end time, the downshift gain calculation subunit obtains the downshift gains of different candidate time periods. The downshift time determination subunit selects the candidate time period with the maximum downshift gain as the downshift time for transitioning from the target power state to the thermal insulation state; the candidate time periods T2 are selected as 1h, 2h, 3h, and 4h respectively. The downshift start time determination unit determines the downshift start time t2, and calculates the gains corresponding to the four candidate time periods T2 by integral calculation respectively. The downshift time determination subunit selects the candidate time period corresponding to the maximum gain as the downshift time for the fuel cell to transition from the target power state to the thermal insulation state.

[0175] Based on the downshift time T2 calculated by the downshift time determination subunit, taking the downshift start time t2 calculated by the downshift start time determination unit as the benchmark, the end time of on-time downshift is t2 + T2; the end time of early downshift is t2 + T2 - 1; the end time of delayed downshift is t2 + T2 + 1; the downshift gain comparison module calculates the gains of the three types of downshifts, and the downshift power generation unit selects the downshift mode with the maximum gain for downshift thermal insulation.

[0176] Compared with the existing power generation control system that continuously aims for power generation, resulting in redundant power generation and wasted fuel, the fuel cell power generation control system of this embodiment can obtain the maximum benefit through hourly optimization. Given the known time-of-use electricity prices, by traversing and calculating the power generation state benefit and the heat standby state benefit for each time period, it controls whether the fuel cell generates power in that time period, and then a power generation curve can be obtained. According to this power generation curve, at the moment of reaching the target power generation, the optimal rise time (loading time) is determined, and then the optimal loading start time is calculated. After the loading module finishes the calculation, the unloading module calculates the optimal unloading start time using the corresponding calculation method, and then the power generation power curve of the fuel cell can be obtained. The power generation control system controls the fuel cell power generation according to this power generation power curve, can obtain the maximum benefit, and improves the power generation cost and efficiency of the fuel cell power generation control system.

[0177] Referring to Figure 4 , the embodiment of the present application also provides a fuel cell power generation control method, which includes S400 to S430 (the step numbers are only used to distinguish different steps, and the embodiment of the present application does not limit the order of execution of each step):

[0178] S400: Calculate the power generation state benefit and the heat standby state benefit under each time-of-use electricity price;

[0179] S410: Determine the time period when the power generation state benefit is greater than the heat standby state benefit as the first time period, and determine the time period when the power generation state benefit is less than the heat standby state benefit as the second time period;

[0180] S420: Determine the loading benefit curve from the second time period to the first time period, and control the fuel cell to increase the power generation power according to the loading benefit curve;

[0181] S430: Determine the unloading benefit curve from the first time period to the second time period, and control the fuel cell to reduce the power generation power according to the unloading benefit curve;

[0182] S440: Determine the power generation power corresponding to the end moment of the maximum loading benefit curve as the target power, and control the fuel cell to generate power at the target power from the end moment of the maximum loading benefit curve to the start moment of the maximum unloading benefit curve.

[0183] It can be understood that the content in the above system embodiment is applicable to this method embodiment. The functions specifically implemented in this method embodiment are the same as those in the above system embodiment, and the beneficial effects achieved are also the same as those in the above system embodiment.

[0184] The embodiments of the present application also provide an electronic device, which includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the above-mentioned fuel cell power generation control method is implemented. The electronic device can be any intelligent terminal including a tablet computer, a vehicle-mounted computer, etc.

[0185] It can be understood that the content in the above method embodiments is applicable to the device embodiments of the present application. The functions specifically implemented by the device embodiments of the present application are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those of the above method embodiments.

[0186] Please refer to Figure 5 , Figure 5 , which schematically shows the hardware structure of an electronic device in another embodiment. The electronic device includes:

[0187] A processor 501, which can be implemented by using a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, etc., and is used to execute relevant programs to implement the technical solutions provided by the embodiments of the present application;

[0188] A memory 502, which can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM), etc. The memory 502 can store an operating system and other application programs. When implementing the technical solutions provided by the embodiments of the present specification through software or firmware, the relevant program codes are stored in the memory 502, and the processor 501 is used to call and execute the fuel cell power generation control method of the embodiments of the present application;

[0189] An input / output interface 503, which is used to implement information input and output;

[0190] A communication interface 504, which is used to implement communication interaction between the device and other devices. Communication can be achieved through a wired method (such as USB, network cable, etc.) or through a wireless method (such as a mobile network, WIFI, Bluetooth, etc.);

[0191] A bus 505, which transmits information between various components of the device (such as the processor 501, the memory 502, the input / output interface 503, and the communication interface 504);

[0192] Among them, the processor 501, the memory 502, the input / output interface 503, and the communication interface 504 are communicatively connected to each other inside the device through the bus 505.

[0193] An embodiment of the present application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above fuel cell power generation control method.

[0194] It can be understood that the content in the above method embodiments is applicable to this storage medium embodiment. The functions specifically implemented by this storage medium embodiment are the same as those in the above method embodiments, and the beneficial effects achieved are also the same as those in the above method embodiments.

[0195] As a non-transitory computer-readable storage medium, a memory can be used to store non-transitory software programs and non-transitory computer-executable programs. In addition, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories can be connected to the processor through a network. Examples of the above network include, but are not limited to, the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0196] The embodiments described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation to the technical solutions provided by the embodiments of the present application. Those skilled in the art know that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0197] Those skilled in the art can understand that the technical solutions shown in the figures do not constitute a limitation to the embodiments of the present application, and may include more or fewer steps than those shown, or combine some steps, or different steps.

[0198] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0199] Those of ordinary skill in the art can understand that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, and appropriate combinations thereof.

[0200] In the description of the present application and the above-mentioned accompanying drawings, terms such as "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0201] It should be understood that in the present application, "at least one (item)" means one or more, and "a plurality" means two or more. "And / or" is used to describe the association relationship of associated objects and indicates that three relationships can exist. For example, "A and / or B" can mean: only A exists, only B exists, and both A and B exist at the same time. Among them, A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one (one) of the following" or its similar expressions refer to any combination of these items, including any combination of single items (ones) or plural items (ones). For example, at least one (one) of a, b, or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0202] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above-mentioned unit division is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be through some interfaces, and the indirect coupling or communication connection of devices or units can be in electrical, mechanical or other forms.

[0203] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0204] In addition, in each embodiment of the present application, the functional units may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of a software functional unit.

[0205] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product. The computer software product is stored in a storage medium and includes multiple instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in the various embodiments of the present application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs that can store programs.

[0206] The preferred embodiments of the embodiments of the present application have been described above with reference to the accompanying drawings, and thus do not limit the scope of the rights of the embodiments of the present application. Any modifications, equivalent replacements, and improvements made by those skilled in the art without departing from the scope and essence of the embodiments of the present application shall be within the scope of the rights of the embodiments of the present application.

Claims

1. A fuel cell power generation control system, characterized in that, The system includes: A revenue calculation module for calculating the power generation state revenue and the hot standby state revenue under each time-of-use electricity price; A time period determination module for determining the time period when the power generation state revenue is greater than the hot standby state revenue as the first time period, and determining the time period when the power generation state revenue is less than the hot standby state revenue as the second time period; A load increase control module for determining the load increase revenue curve from the second time period to the first time period, and controlling the fuel cell to increase the power generation according to the load increase revenue curve; A load decrease control module for determining the load decrease revenue curve from the first time period to the second time period, and controlling the fuel cell to decrease the power generation according to the load decrease revenue curve; A target power generation module for determining the power generation corresponding to the end time of the load increase revenue curve as the target power, and controlling the fuel cell to generate power at the target power from the end time of the load increase revenue curve to the start time of the load decrease revenue curve.

2. The fuel cell power generation control system according to claim 1, wherein The power generation state revenue is equal to the electricity sales revenue minus the gas cost in the power generation state; The hot standby state revenue is equal to zero minus the gas cost in the hot standby state.

3. A fuel cell power generation control system according to claim 2, characterized in that, The power generation state revenue is equal to the electricity sales revenue plus the heat sales revenue in the power generation state minus the gas cost in the power generation state; The hot standby state revenue is equal to the heat sales revenue in the hot standby state minus the gas cost in the hot standby state.

4. A fuel cell power generation control system according to claim 1, characterized in that, The load increase control module includes: A load increase revenue calculation unit for using the start time of the first time period as the reference point for the load increase end time, and obtaining the load increase revenue curve by a linear function according to the reference point of the load increase end time and the maximum allowable load increase speed of the system; A load increase time determination unit for determining the load increase time according to the load increase revenue curve; A load increase start time determination unit for determining the load increase start time of the load increase time; A load increase power generation unit for controlling the fuel cell to start generating power at the load increase start time.

5. A fuel cell power generation control system according to claim 4, characterized in that, The load increase revenue calculation unit includes: A load increase revenue calculation sub-unit for calculating the revenue curve corresponding to reaching the load increase end time in each candidate time period according to the linear function; The load increase time determination unit includes: A load increase time determination sub-unit for determining the candidate time period corresponding to the revenue curve with the maximum revenue as the load increase time.

6. The fuel cell power generation control system according to claim 4, characterized in that, The load increase start time determination unit is further configured to determine the time before the load increase start time as the early power generation time, and determine the time after the load increase start time as the delayed power generation time; The system further includes: A load increase revenue comparison module for calculating the load increase power generation revenue of starting load increase power generation from the early power generation time, the load increase start time, and the delayed power generation time respectively; wherein, the duration of the load increase power generation is the load increase time; The load increase power generation unit is further configured to control the fuel cell to start generating power at the start power generation time corresponding to the maximum load increase power generation revenue.

7. A fuel cell power generation control system according to claim 1, characterized in that The load decrease control module includes: A load reduction revenue calculation unit, which is used to use the start time of the second time period as a reference point for the load reduction end time, and obtain the load reduction revenue curve according to the reference point of the load reduction end time and the maximum allowable load increase speed of the system by means of a linear function; A load reduction time determination unit, which is used to determine the load reduction time according to the load reduction revenue curve; A load reduction start time determination unit, which is used to determine the load reduction start time of the load reduction time; A load reduction power generation unit, which is used to control the fuel cell to reduce the power generation power at the load reduction start time until the load reduction power is reached.

8. A fuel cell power generation control system according to claim 7, characterized in that, The load reduction revenue calculation unit includes: A load reduction revenue calculation subunit, which is used to calculate the revenue curve corresponding to reaching the load reduction end time under each candidate time period according to the linear function; The load reduction time determination unit includes: A load reduction time determination subunit, which is used to determine the candidate time period corresponding to the revenue curve with the maximum revenue as the load reduction time.

9. A fuel cell power generation control system according to claim 7, wherein The load reduction start time determination unit is further used to determine the time before the load reduction start time as the early load reduction time, and the time after the load reduction start time as the late load reduction time; The system further includes: A load reduction revenue comparison module, which is used to calculate the load reduction power generation state revenues starting from the early load reduction time, the load reduction start time, and the late load reduction time respectively; wherein, the duration of the load reduction power generation is the load reduction time; The load reduction power generation unit is further used to control the fuel cell to reduce the power generation power until the load reduction power is reached at the load reduction start time corresponding to the maximum load reduction power generation state revenue.

10. A fuel cell power generation control system according to claim 1, characterized in that, The system further includes: A load increase control unit, which is used to set the interval of 0.5 h before and after the load increase revenue curve as the load increase area after determining the load increase revenue curve, and perform load increase power generation within the load increase area; A load reduction control unit, which is used to set the interval of 0.5 h before and after the load reduction revenue curve as the load reduction area after determining the load reduction revenue curve, and perform load reduction power generation within the load reduction area.

11. A fuel cell power generation control system according to any one of claims 1 to 10, characterized in that, The system further includes: a total revenue calculation module, which is used to calculate the total revenue of the fuel cell; The total revenue calculation module includes: A power revenue calculation unit, which is used to obtain the total power curve and the time-of-use electricity price curve within 24 hours, and calculate the power revenue according to the total power curve and the time-of-use electricity price curve; The calculation formula of the power revenue is: where Pr is the power revenue, Ge is the total power curve, and P is the time-of-use electricity price curve; A fuel cost calculation unit, which is used to calculate the gas cost of the fuel cell within the 24 hours; The calculation formula of the gas cost is: where Fc is the gas cost, Pf is the gas price, Yb is the coefficient for converting the standard condition gas flow to the working condition natural gas flow, and Fu is the gas consumption vector curve; A net revenue calculation unit, which is used to calculate the net revenue of the fuel cell within the 24 hours according to the power revenue and the fuel cost; The calculation formula of the net revenue is: Wherein, Tr is the net revenue, C1 is the fixed cost of the fuel cell, and C2 is the maintenance cost per unit power generation of the fuel cell.

12. A fuel cell power generation control method, characterized in that, The method includes the following steps: Calculating the power generation state revenue and the heat standby state revenue under each time-of-use electricity price; Determining the time period when the power generation state revenue is greater than the heat standby state revenue as the first time period, and determining the time period when the power generation state revenue is less than the heat standby state revenue as the second time period; Determining the load increase revenue curve from the second time period to the first time period, and controlling the fuel cell to increase the power generation according to the load increase revenue curve; Determining the load decrease revenue curve from the first time period to the second time period, and controlling the fuel cell to decrease the power generation according to the load decrease revenue curve; Determining the power generation corresponding to the end time of the load increase revenue curve as the target power, and controlling the fuel cell to generate power at the target power from the end time of the load increase revenue curve to the start time of the load decrease revenue curve.

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