CN117889040A - Control method, device, equipment and storage medium for producing hydrogen by wind ionization net - Google Patents
Control method, device, equipment and storage medium for producing hydrogen by wind ionization net Download PDFInfo
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- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 179
- 239000001257 hydrogen Substances 0.000 title claims abstract description 179
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- 150000002431 hydrogen Chemical class 0.000 claims description 6
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Abstract
The application discloses a control method, a device, equipment and a storage medium for off-grid hydrogen production by wind power, and belongs to the technical field of wind power generation. The control method for producing hydrogen by wind off-grid comprises the following steps: acquiring the charge state of an energy storage system and the wind speed of a wind power system, wherein the wind power system transmits electric energy to the energy storage system; when the state of charge of the energy storage system is larger than a preset starting threshold value and the wind speed of the wind power system meets a fan starting wind speed threshold value, the energy storage system transmits electric energy to the hydrogen production system to produce hydrogen; in response to the shutdown command, the wind power system, the energy storage system, and the hydrogen production system are sequentially shut down in a gradual decreasing manner. The technical scheme of the application switches various states of the system, such as an initialization state, a shutdown state, a standby state, a starting state and an operation state, through a proper and reasonable control scheme. The hydrogen production efficiency is ensured, and meanwhile, the system can safely and stably operate under complex environments and different working conditions.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a control method, a device, equipment and a storage medium for off-grid hydrogen production by wind power.
Background
The clean energy transformation in China greatly promotes the high-speed development of the photovoltaic and wind power industries, and the construction of a novel power system taking green and low-carbon new energy as a main body is an important energy layout in the future. However, with the gradual increase of the renewable energy power generation ratio, the new energy grid connection difficulty, the limit wind curtailment problem prominence and the operation income extrusion are continuously narrowed due to the limited power grid admittance and the immature policy of energy storage participation in the electric power market transaction.
The wind ionization net hydrogen production technology can relieve the bottleneck problem of high-proportion wind power on-line, realize the on-site absorption of wind power, improve the wind power utilization rate, and has important research significance for widening the new development mode of wind power industry and promoting the collaborative development of green hydrogen industry. However, the wind power off-grid hydrogen production system is complex, and the contradiction between the fluctuation of wind power output and the stability requirement of an electrolytic cell on electric energy quality not only causes great challenges for the reliability of the system, but also causes unnecessary wear on equipment due to frequent start-stop and fluctuation in a wide power range, thereby greatly increasing the operation cost. How to achieve different operation states of the accurate control system through a proper control scheme, wherein the different operation states comprise an initialization state, a shutdown state, a standby state, a startup state and an operation state. How to improve the hydrogen production efficiency of the system and ensure that the system can safely and stably run under complex environments and different working conditions. How to properly solve the above problems is a problem to be solved in the industry.
Disclosure of Invention
The invention provides a control method, a device, equipment and a storage medium for off-grid hydrogen production by wind power, which are used for ensuring the hydrogen production efficiency and simultaneously ensuring that a system can safely and stably run in a complex environment and under different working conditions.
According to a first aspect of the invention, there is provided a control method for off-grid hydrogen production by wind power, the control method comprising:
Acquiring the charge state of an energy storage system and the wind speed of a wind power system, wherein the wind power system transmits electric energy to the energy storage system;
When the state of charge of the energy storage system is larger than a preset starting threshold value and the wind speed of the wind power system meets a fan starting wind speed threshold value, the energy storage system transmits electric energy to the hydrogen production system to produce hydrogen;
In response to the shutdown command, the wind power system, the energy storage system, and the hydrogen production system are sequentially shut down in a gradual decreasing manner.
In one embodiment, before the energy storage system transmits electrical energy to the hydrogen production system for producing hydrogen, further comprising:
When any one of the wind power system, the hydrogen production system and the energy storage system is operated for the first time after power-on, entering an initialization state, wherein the initialization state comprises reading initialization parameters and transmitting reset;
if a fault occurs during the initialization state, a shutdown state is entered.
In one embodiment, after the initialization state is finished, the method further comprises:
after the initialization state is finished, when the state of charge of the energy storage system is smaller than a standby electric quantity threshold value and the wind speed meets a fan starting wind speed threshold value, the energy storage system enters a single charging mode;
When the charge state of the energy storage system is larger than the standby electric quantity threshold value, the energy storage system enters a standby mode;
When a first judging condition is met, the energy storage system in a standby state activates a charging function, wherein the first judging condition comprises that the duration of the energy storage system in the standby state is longer than the preset standby duration, the charge state of the energy storage system is smaller than a preset starting threshold value and the wind speed meets a fan starting wind speed threshold value.
In one embodiment, the energy storage system transmits electrical energy to the hydrogen production system for producing hydrogen, comprising:
When a second judging condition is met, the energy storage system in a standby state activates a power transmission function, and the energy storage system enters an operation mode, wherein the operation mode is that the energy storage system transmits electric energy to the hydrogen production system to produce hydrogen, the second judging condition comprises that the state of charge of the energy storage system is larger than a preset starting threshold value and the wind speed meets a fan starting wind speed threshold value, and the power transmission function meets that the voltage is constant, and the bus voltage and the bus frequency are all within preset range values;
when the state of charge of the energy storage system in the operation mode is greater than a preset saturation threshold, adjusting the power input to the energy storage system by the wind power system, so that the state of charge of the energy storage system is between a preset starting threshold and a preset saturation threshold, wherein the power is adjusted within a preset wind power input range.
In one embodiment, further comprising:
when the energy storage system meets a third judging condition, the electric energy transmitted to the hydrogen production system is regulated to the maximum, and if the electric energy transmitted to the hydrogen production system is already the maximum, the electric energy input by the wind power system is reduced, wherein the third judging condition is that the state of charge of the energy storage system is higher than any one or more of a preset high-regulation charge threshold value, the electric power input by the wind power system and received by the energy storage system is greater than a preset first high-regulation electric power threshold value, the bus voltage is greater than a preset high-voltage threshold value and the current voltage frequency is greater than a preset high-frequency threshold value;
And when the energy storage system meets a fourth judging condition, adjusting the electric energy input by the wind power system to the maximum, and reducing the electric energy transmitted to the hydrogen production system if the electric energy input by the wind power system is adjusted to the maximum, wherein the fourth judging condition is that the state of charge of the energy storage system is lower than a preset low-regulation charge threshold value, the electric power transmitted to the hydrogen production system by the energy storage system is greater than any one or more of a preset second high-regulation electric power threshold value, the bus voltage is smaller than a preset low-voltage threshold value and the current voltage frequency is smaller than a preset low-frequency threshold value, and the preset first high-regulation electric power threshold value is greater than or equal to the preset second high-regulation electric power threshold value.
In one embodiment, the sequentially turning off the wind power system, the energy storage system, and the hydrogen production system in a gradually decreasing manner in response to the shutdown command comprises:
Responding to a shutdown instruction, executing a normal shutdown mode when the fault level in the shutdown instruction is smaller than or equal to a preset no-fault level, wherein the normal shutdown mode comprises gradually reducing hydrogen production power and fan power until the hydrogen production power is lower than a safe shutdown hydrogen production power threshold value and the fan power is lower than a safe shutdown fan power threshold value, and executing the shutdown instruction on a wind power system, a hydrogen production system and an energy storage system in sequence when the hydrogen production power is lower than the safe shutdown hydrogen production power threshold value and the fan power is lower than the safe shutdown fan power threshold value, wherein refrigeration devices in the wind power system, the hydrogen production system and the energy storage system are delayed to be shut down until the temperature requirement is met;
And responding to the shutdown command, executing a rapid shutdown mode when the failure level in the shutdown command is greater than a preset failure-free level, simultaneously executing the shutdown command on the wind power system, the hydrogen production system and the energy storage system, and monitoring the shutdown process until the shutdown is completed.
According to a second aspect of the present invention, there is provided a control device for wind off-grid hydrogen production, comprising:
The system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the charge state of an energy storage system and the wind speed of a wind power system, and the wind power system transmits electric energy to the energy storage system;
the transmission module is used for transmitting electric energy to the hydrogen production system for producing hydrogen when the charge state of the energy storage system is larger than a preset starting threshold value and the wind speed of the wind power system meets a fan starting wind speed threshold value;
And the closing module is used for responding to the shutdown instruction and sequentially closing the wind power system, the energy storage system and the hydrogen production system in a gradually decreasing manner.
In one embodiment, the obtaining module, the transmitting module and the closing module are controlled to implement any of the above control methods for off-grid hydrogen production by wind power.
According to a third aspect of the present invention, there is provided an electronic device comprising: a processor and a memory storing computer program instructions;
And the processor executes the computer program instructions to realize any control method for off-grid hydrogen production by wind power.
According to a fourth aspect of the present invention, there is provided a computer readable storage medium, wherein computer program instructions are stored on the computer readable storage medium, the computer program instructions when executed by a processor implementing any one of the above control methods for off-grid hydrogen production by wind power.
In summary, the application provides a control method and a device for off-grid hydrogen production by wind power, wherein the method comprises the following steps: acquiring the charge state of an energy storage system and the wind speed of a wind power system, wherein the wind power system transmits electric energy to the energy storage system; when the state of charge of the energy storage system is larger than a preset starting threshold value and the wind speed of the wind power system meets a fan starting wind speed threshold value, the energy storage system transmits electric energy to the hydrogen production system to produce hydrogen; in response to the shutdown command, the wind power system, the energy storage system, and the hydrogen production system are sequentially shut down in a gradual decreasing manner. The technical scheme of the application can switch various states of the system, such as an initialization state, a shutdown state, a standby state, a starting state and an operation state, through a proper and reasonable control scheme. The hydrogen production efficiency is ensured, and meanwhile, the system can safely and stably operate under complex environments and different working conditions.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a control method for wind off-grid hydrogen production provided by an embodiment of the invention;
FIG. 2 is a flow chart of another control method for off-grid hydrogen production by wind power provided by an embodiment of the invention;
FIG. 3 is a flow chart of yet another control method for off-grid hydrogen production by wind power according to an embodiment of the present invention;
FIG. 4 is a flowchart of step S12 of a control method for off-grid hydrogen production by wind power provided by an embodiment of the invention;
FIG. 5 is a flow chart of yet another control method for off-grid hydrogen production by wind power according to an embodiment of the present invention;
FIG. 6 is a flowchart of step S13 of a control method for off-grid hydrogen production by wind power provided by an embodiment of the invention;
FIG. 7 is a block diagram of a control device for off-grid hydrogen production by wind power provided by an embodiment of the invention;
fig. 8 is a block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the particular embodiments described herein are meant to be illustrative of the application only and not limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
As shown in fig. 1, the invention provides a control method for off-grid hydrogen production by wind power, which comprises the following steps:
In step S11, acquiring a state of charge of an energy storage system and a wind speed of a wind power system, wherein the wind power system transmits electric energy to the energy storage system;
in step S12, when the state of charge of the energy storage system is greater than a preset start-up threshold and the wind speed of the wind power system meets a fan start-up wind speed threshold, the energy storage system transmits electric energy to the hydrogen production system to produce hydrogen;
in step S13, the wind power system, the energy storage system, and the hydrogen production system are sequentially turned off in a gradually decreasing manner in response to the shutdown command.
In one embodiment, the state of charge (state of charge) of the energy storage system represents the ratio of the current charge of the energy storage system to the charge of its fully charged state, commonly expressed as a percentage. When the state of charge of the energy storage system is large and the electric power transmitted to the energy storage system by the wind power system is large, the energy storage system can transmit electric energy to the hydrogen production system, and the hydrogen production system utilizes the received electric energy to produce hydrogen. Specifically, the system will determine whether two conditions are met: firstly, whether the charge state of the energy storage system is larger than a preset starting threshold value or not; and whether the wind speed of the wind power system reaches a wind speed threshold value for starting a fan or not. If both conditions are met, the energy storage system will begin to deliver electrical energy to the hydrogen production system for the production of hydrogen. According to the technical scheme, the wind power with volatility and intermittence is firstly conveyed to the energy storage system through the wind power system, the energy storage system and the hydrogen production system, and the energy storage system is stably used for transmitting electric energy to the hydrogen production system, so that the hydrogen production system can take out hydrogen at a power value within a preset power range, and the technical purpose of off-grid hydrogen production of wind power is achieved. In order to protect the stability and the service life of the wind power system, the energy storage system and the hydrogen production system, the wind power system, the energy storage system and the hydrogen production system are stopped in sequence, the stopping process is gradually reduced, and the system is reduced to be completely stopped in a control and orderly mode.
The technical scheme in this embodiment switches various states of the system, such as an initialization state, a shutdown state, a standby state, a startup state and an operation state, by means of a proper and reasonable control scheme. The hydrogen production efficiency is ensured, and meanwhile, the system can safely and stably operate under complex environments and different working conditions.
In one embodiment, as shown in FIG. 2, the method further comprises the following steps S21-S22:
in step S21, when any one of the wind power system, the hydrogen production system and the energy storage system is the first running after power-up, entering an initialization state, wherein the initialization state includes reading initialization parameters and transmitting reset;
in step S22, if a failure occurs during the initialization state, the shutdown state is entered.
In one embodiment, by initializing operation, the wind hydrogen storage system is ensured to be in a correct state and configuration before each start; the state switching between the initialization and the shutdown avoids the system from running in a fault state, and ensures the safety of equipment; the state switching between the initialization and the standby can improve the response speed and the scheduling flexibility of the system, and is suitable for the fluctuation and the intermittence of wind power; the switching between standby and shutdown ensures proper rest and maintenance of the equipment, and prolongs the service life of the equipment. And executing an initialization process, judging whether the system runs for the first time after power-on, entering an initialization state when the system runs for the first time after power-on, reading initialization parameters, and transmitting reset. And further judging whether the system has a fault, entering a shutdown state when the system has the fault, otherwise, ending initialization and entering a standby state.
In one embodiment, as shown in FIG. 3, the method further comprises the following steps S31-S33:
In step S31, after the initialization state is finished, when the state of charge of the energy storage system is smaller than a standby electric quantity threshold and the wind speed meets a fan start wind speed threshold, the energy storage system enters a single charging mode;
In step S32, when the state of charge of the energy storage system is greater than the standby power threshold, the energy storage system enters a standby mode;
In step S33, when a first determination condition is satisfied, the energy storage system in a standby state activates a charging function, where the first determination condition includes that a duration of the energy storage system in the standby state is greater than a preset standby waiting duration, a state of charge of the energy storage system is less than a preset startup threshold, and a wind speed satisfies a fan startup wind speed threshold.
In one embodiment, the switching between standby and starting can smooth the starting process, so that the starting time is saved, and the response speed and the flexibility of the system are improved. Judging whether the system enters a start-up process, and only when the system meets the standby time length in a standby state, the charge state of the energy storage system is in a set value range and the wind speed meets the start-up condition of the wind power system, the system can perform the start-up process.
After the initialization state is finished, if the state of charge of the energy storage system is smaller than the standby electric quantity threshold value and the current wind speed meets the wind speed threshold value of the fan start, the energy storage system enters a single charging mode, and the meaning of the single charging mode is that only charging does not transmit power. After the system is initially set, whether the system needs to be charged independently or not is determined according to the actual conditions of the electric quantity and the wind speed, namely, if the electric quantity is insufficient and the wind power condition allows the fan to work, the energy storage system is charged by priority, so that enough electric quantity storage is ensured.
And when the charge state of the energy storage system is greater than the standby electric quantity threshold value, the energy storage system enters a standby mode. When the electric quantity is sufficient, the energy storage system can enter a standby state with low energy consumption, and is ready to respond to further operation commands at any time, and meanwhile unnecessary electric quantity consumption is avoided.
When the first judging condition is met, namely the time of the energy storage system in the standby state exceeds the preset waiting time, the charge state of the energy storage system is smaller than the starting threshold, and meanwhile, the wind speed condition allows the fan to be started, the energy storage system in the standby state activates the charging function. The standby mode is dynamically adjusted according to the actual situation. If during standby it is found that the power is below the start-up threshold and wind conditions are appropriate, the system will automatically initiate the charging function, ensuring that the power supply is not interrupted.
The system first evaluates the power and wind speed after the initial state to determine whether a charging mode needs to be directly entered. Once the power is sufficient, the system enters a standby mode to conserve energy. In standby mode, the system is dynamically adjusted according to the conditions of power, time and wind speed, and the charging function is activated when necessary to ensure continuous operation.
In addition, when the charging power of the energy storage system is greater than a preset minimum value and the average value of the state of charge of the energy storage system in a preset evaluation time period is greater than a minimum value required by starting, whether the system has a fault is further judged, and in a preferred embodiment, the preset evaluation time period is 3 seconds. And when the system has no fault, entering a start-up flow, otherwise, entering a shutdown flow by the system.
Judging the off-grid starting mode of the system, wherein the whole system can only adjust the bus voltage and the frequency through the energy storage system, when the bus voltage is higher, the energy storage system needs to be charged in time to absorb electric energy, and at the moment, the power generated by the power grid is reduced, so that the frequency of the power grid is reduced; when the bus voltage is lower, the energy storage system is required to discharge to make up for the shortage of system electric energy supply, and the generated power of the power grid is increased at the moment, so that the frequency of the power grid is increased. Therefore, it is necessary to determine the state of charge of the energy storage system in order to execute the start-up command.
In one embodiment, as shown in FIG. 4, step S12 includes the following steps S41-S42:
In step S41, when a second determination condition is met, the energy storage system in a standby state activates a power transmission function, and the energy storage system enters an operation mode, wherein the operation mode is that the energy storage system transmits electric energy to the hydrogen production system for producing hydrogen, the second determination condition includes that the state of charge of the energy storage system is greater than a preset starting threshold value and the wind speed meets a fan starting wind speed threshold value, and the power transmission function meets that the voltage is constant, and the bus voltage and the bus frequency are all within preset range values;
In step S42, when the state of charge of the energy storage system in the operation mode is greater than a preset saturation threshold, the power input to the energy storage system by the wind power system is adjusted so that the state of charge of the energy storage system is between a preset start-up threshold and a preset saturation threshold, wherein the power is adjusted within a preset wind power input range.
In one embodiment, the switching between starting and running can adjust the running state of the equipment, ensure the continuity of hydrogen production and realize the optimized running of the system.
And when the second judging condition is met, the energy storage system in the standby state activates the power transmission function of the energy storage system. This condition includes two main factors: the state of charge of the energy storage system must be greater than a preset startup threshold, and the wind speed needs to meet a wind speed threshold for startup of the wind turbine. The energy storage system enters an operation mode and is mainly used for transmitting electric energy to the hydrogen production system to produce hydrogen. The implementation of the power transmission function needs to ensure voltage stabilization, and the bus voltage and the frequency are both within a preset range. The key point of the energy storage system from the standby state to the operation mode is to meet specific conditions of electric quantity and wind speed and ensure the stability of the power transmission process.
When the energy storage system is in an operation mode and the state of charge of the energy storage system exceeds a preset saturation threshold, the power input to the energy storage system by the wind power system is adjusted, and the purpose is to maintain the state of charge of the energy storage system between a start-up threshold and the saturation threshold. The power regulation process must be performed within a predetermined wind power input range. The energy storage system intelligently switches the running state according to the charge state and the wind speed condition. The transition from standby to run mode is based on the assessment of electrical demand and wind conditions, while the transition from run mode to adjust wind power input power is to prevent overcharging of the energy storage system, ensuring that the system is able to continue to supply power to the hydrogen production system stably. Judging whether the power of the wind power system is equal to a set power value, if the condition is met, issuing a hydrogen production system start command, setting the power to be 30% of the rated power of an energy storage system, further judging whether the power of the wind power system is within a wind power predicted value range, if the condition is met, entering an operation mode of the system, otherwise, issuing a wind power limiting power command, and setting the power value to be the current system power plus a set step length until the wind power system power is within the wind power predicted value range, and entering the operation mode of the system; when the state of charge of the energy storage system is greater than a set maximum value, issuing an energy storage system start command, setting a working mode to be constant voltage, further judging whether the bus voltage and the frequency are in a set value range and continuously stabilizing for 3 seconds, if the conditions are met, issuing a hydrogen production system start command, setting the limiting power to be 30% of the rated power of the energy storage system, further judging whether the power of the wind power system is in a wind power predicted value range, if the conditions are met, entering an operation mode of the system, otherwise, issuing a wind power limiting power command, setting the power value to be the current system power plus a set step length until the power of the wind power system is in the wind power predicted value range, and entering the operation mode of the system. The power input is managed and regulated during operation of the energy storage system to maintain system efficiency and avoid power waste or equipment damage.
In addition, an off-grid operation mode of the wind-hydrogen storage system is provided, charging and discharging power of the energy storage system, the state of charge of the energy storage system, bus voltage and bus frequency are used as basis for adjusting system power, and further the operation state of each subsystem is controlled, wherein the bus voltage and the bus frequency are low-pass filtering average values.
In one embodiment, as shown in FIG. 5, the method further comprises the following steps S51-S52:
in step S51, when the energy storage system meets a third determination condition, the electric energy transmitted to the hydrogen production system is adjusted to the maximum, and if the electric energy transmitted to the hydrogen production system is already the maximum, the electric energy input by the wind power system is reduced, wherein the third determination condition is that the state of charge of the energy storage system is higher than any one or more of a preset high-adjustment charge threshold value, the electric power input by the wind power system received by the energy storage system is greater than a preset first high-adjustment electric power threshold value, the bus voltage is greater than a preset high-voltage threshold value, and the current voltage frequency is greater than a preset high-frequency threshold value;
In step S52, when the energy storage system meets the fourth determination condition, the electric energy input by the wind power system is adjusted to the maximum, and if the electric energy input by the wind power system is already adjusted to the maximum, the electric energy transmitted to the hydrogen production system is reduced, wherein the fourth determination condition is that the state of charge of the energy storage system is lower than a preset low-adjustment charge threshold, the electric power transmitted to the hydrogen production system by the energy storage system is greater than any one or more of a preset second high-adjustment electric power threshold, the bus voltage is smaller than a preset low-voltage threshold, and the current voltage frequency is smaller than a preset low-frequency threshold, and the preset first high-adjustment electric power threshold is greater than or equal to the preset second high-adjustment electric power threshold.
In one embodiment, the third criterion is met when the state of charge of the energy storage system exceeds a preset high regulated charge threshold, or the received wind power input power exceeds a preset first high regulated electric power threshold, or the bus voltage and frequency exceeds a preset high threshold. At this point, the energy storage system regulates the power delivered to the hydrogen production system to a maximum. If the transmitted power is already at a maximum, the power input by the wind power system will be reduced.
The fourth criterion is satisfied when the state of charge of the energy storage system is below a preset low regulated charge threshold, or the electrical power delivered to the hydrogen production system exceeds a preset second high regulated electrical power threshold, or the bus voltage and frequency are below a preset low threshold. At this time, the electric energy input by the wind power system is adjusted to the maximum. If the input power to the wind power system is already at a maximum, the power delivered to the hydrogen production system is reduced.
And according to the current state of charge of the energy storage system, the input power of the wind power system and the voltage and frequency of the system, the transmission and input of electric energy are intelligently adjusted so as to maintain the high-efficiency operation and stability of the system. Different adjustment measures are adopted according to different system states and external conditions. Optimizing the use of electrical energy in a high state of charge begins by maximizing the electrical energy transfer of the hydrogen production system and if this condition is met, avoiding overcharging by reducing the wind power input. And when the electric quantity is low, preferentially increasing the wind power input, and if the input is maximized, reducing the electric energy transmission to the hydrogen production system so as to ensure the electric quantity level of the energy storage system. The threshold settings in the two steps (e.g., high regulated charge threshold, electrical power threshold, voltage and frequency threshold) are set according to the needs and protection requirements of the system operation, ensuring that the system is both operating efficiently and not damaging the equipment due to excessive loads or insufficient energy. The energy storage system and related facilities (such as a wind power system and a hydrogen production system) can be ensured to effectively and safely operate under various conditions by intelligently adjusting the transmission and the input of electric energy to cope with different operation conditions.
For example, calculating an average value of charge and discharge power of the energy storage system for 3 seconds and an average value of charge state of the energy storage system for 3 seconds, a low-pass filtering average value of bus voltage for 5 seconds and a low-pass filtering average value of bus frequency for 5 seconds, when the charge power of the energy storage system is larger than a set value, or the bus voltage is larger than the set value, or the bus frequency is larger than the set value, or the charge state of the energy storage system is in a state that the power of the wind-hydrogen storage system is too high, judging whether the charge state of the energy storage system is larger than the set value, if the charge state of the energy storage system is larger than the set value, the energy storage system enters a discharging mode, further judging whether the power of the hydrogen production system reaches the maximum value under the condition that the current discharge power of the energy storage system is smaller than or equal to the set value, if the power of the hydrogen production system does not reach the maximum value, issuing a hydrogen production system power adjustment command, issuing the current power value is the hydrogen production system plus a set step length, if the current hydrogen production system power reaches the maximum value, issuing a wind power adjustment command, and issuing the power value is the current power of the fan to the set step length; when the state of charge of the energy storage system is smaller than or equal to a set value, further judging whether the charging power of the energy storage system is larger than the set value, or the bus voltage is larger than the set value, or whether the bus frequency is larger than the set value is met, if the conditions are met, judging whether the power of the hydrogen production system reaches the maximum value, if the power of the hydrogen production system does not reach the maximum value, issuing a hydrogen production system power adjustment instruction, wherein the issuing power value is the current power of hydrogen production plus the energy storage charging power, and if the current hydrogen production system power reaches the maximum value, issuing a wind power system power adjustment instruction, and the issuing power value is the current power of a fan-the energy storage charging power.
When the discharging power of the energy storage system is larger than a set value, or the bus voltage is smaller than the set value, or the bus frequency is smaller than the set value, or the state of charge of the energy storage system is smaller than the set value, the system is in a state of excessively low power, whether the state of charge of the energy storage system is smaller than the set value is judged, if the state of charge of the energy storage system is smaller than the set value, the energy storage system enters a charging mode, whether the power of the wind power system reaches the maximum value is further judged under the condition that the current charging power of the energy storage system is smaller than or equal to the set value, if the power of the wind power system does not reach the maximum value, a wind power system power adjustment command is issued, the issued power value is the current power of the fan plus the set step length, if the power of the wind power system reaches the maximum value, the issued hydrogen power adjustment command is issued, and the issued power value is the current power of hydrogen production-set step length; if the charge state of the energy storage system is larger than or equal to a set value, further judging whether the discharge power of the energy storage system is larger than the set value, or the bus voltage is smaller than the set value, or whether the bus frequency is smaller than the set value is met, if the conditions are met, judging whether the power of the wind power system reaches the maximum value, if the power of the wind power system does not reach the maximum value, issuing a wind power system power adjustment instruction, wherein the issuing power value is the current power of the fan plus the energy storage discharge power, if the current wind power system power reaches the maximum value, issuing a hydrogen production system power adjustment instruction, and the issuing power value is the current power of the hydrogen production system-the energy storage discharge power.
Further, it is determined whether the system shutdown control scheme is a fast shutdown mode or a normal shutdown mode. When the system fails, the failure needs to be judged and classified, and the degree of losing the function of the system is reduced to the greatest extent on the premise of ensuring safe and stable operation, so that the stable operation of the system is maintained and the damage to equipment is prevented. Therefore, when the failure level of the system is greater than the set value, the individual unit loads need to be cut off rapidly, otherwise, the system can cut off the loads in turn by gradually reducing the system power.
In one embodiment, as shown in FIG. 6, step S13 includes the following steps S61-S62:
In step S61, in response to a shutdown command, when a failure level in the shutdown command is less than or equal to a preset failure-free level, executing a normal shutdown mode, wherein the normal shutdown mode includes gradually reducing hydrogen production power and fan power until the hydrogen production power is lower than a safe shutdown hydrogen production power threshold and the fan power is lower than a safe shutdown fan power threshold, and when the hydrogen production power is lower than the safe shutdown hydrogen production power threshold and the fan power is lower than the safe shutdown fan power threshold, executing the shutdown command on a wind power system, a hydrogen production system and an energy storage system in sequence, wherein refrigeration devices in the wind power system, the hydrogen production system and the energy storage system are delayed to be turned off until temperature requirements are met;
in step S62, in response to the shutdown command, when the failure level in the shutdown command is greater than the preset failure-free level, a fast shutdown mode is executed, while the shutdown command is executed for the wind power system, the hydrogen production system, and the energy storage system, and the shutdown process is monitored until the shutdown is completed.
In one embodiment, when the level of failure in the received shutdown command is less than or equal to a preset no-failure level, a normal shutdown mode is performed that includes gradually reducing the hydrogen production power and the fan power until such power falls below a safe shutdown threshold. And after the hydrogen production power and the fan power are both reduced below the safety threshold, executing a shutdown instruction on the wind power system, the hydrogen production system and the energy storage system in sequence. During shutdown, the refrigeration units of these systems may be delayed from shutting down until the temperature requirements are met to ensure that the systems do not damage the equipment during shutdown due to excessive temperatures.
When the fault level in the received shutdown command is greater than the preset fault-free level, executing the rapid shutdown mode, and immediately executing the shutdown command on the wind power system, the hydrogen production system and the energy storage system without executing the process of gradually reducing the power. During the rapid shutdown process, the monitoring is continued until the shutdown is completed, so that the system is ensured to stop running safely.
The system decides whether to perform the normal shutdown mode or the fast shutdown mode according to the failure level in the shutdown command. The failure level is an important decision factor that indicates how fast the system needs to be shut down and the safety measures that need to be taken into account when shutting down. The normal shutdown mode and the fast shutdown mode provide two different shutdown strategies. The normal mode is suitable for the situation without emergency faults, and allows the system to safely stop through orderly power reduction; the fast mode is then used in emergency situations where there is a high level of failure, and all operations need to be stopped immediately to avoid damage.
In the normal shutdown mode, the steps of powering down and delaying shut down of the refrigeration unit are intended to protect the system from temperature increases or other problems that may occur during shutdown. While in the fast shutdown mode, monitoring the shutdown process ensures that the system safely stops operating even in an emergency situation. How the system adopts different shutdown strategies according to different fault levels to ensure equipment safety and system stability.
Firstly, judging whether hydrogen production power is smaller than or equal to set power and whether fan power is smaller than or equal to set power, when the judging conditions are not met, issuing a hydrogen production system power adjustment instruction, wherein the set power value is the current power value of the hydrogen production system minus a set step length, issuing a fan system power adjustment instruction, and the set power value is the current power value of the fan system minus the set step length, until the judging conditions are met, issuing a shutdown instruction by the wind power system, issuing the shutdown instruction by the hydrogen production system after the shutdown of the wind power system is completed, issuing the shutdown instruction by the energy storage system after the shutdown of the hydrogen production system is completed, and delaying the shutdown by 30s after the shutdown of the energy storage system is completed.
The system may sequentially cut off the load by gradually reducing the system power. For example, when a fault or stop button is pressed, the system enters a shutdown process, when the system fault level is greater than a preset fault-free level, the system executes a rapid shutdown mode, the wind power system, the hydrogen production system and the energy storage system all send shutdown instructions, and when each device respectively completes the shutdown process, the whole system is stopped; and when the system fault level is less than or equal to a preset no-fault level, the system executes a normal shutdown mode.
In one embodiment, FIG. 7 is a block diagram of a control device for off-grid production of hydrogen from wind power, according to an exemplary embodiment. As shown in fig. 7, the control device for off-grid hydrogen production by wind power comprises an acquisition module 71, a transmission module 72 and a closing module 73.
The acquiring module 71 is configured to acquire a state of charge of an energy storage system and a wind speed of a wind power system, where the wind power system transmits electric energy to the energy storage system;
The transmission module 72 is configured to transmit electric energy to the hydrogen production system for producing hydrogen when a state of charge of the energy storage system is greater than a preset start-up threshold and a wind speed of the wind power system meets a fan start-up wind speed threshold;
The shutdown module 73 is configured to sequentially shutdown the wind power system, the energy storage system, and the hydrogen production system in a gradual decreasing manner in response to a shutdown command.
The acquisition module 71, the transmission module 72 and the closing module 73 included in the block diagram of the control device for producing hydrogen by wind power off-grid are controlled to execute the control method for producing hydrogen by wind power off-grid as described in any of the above embodiments.
As shown in fig. 8, the present invention provides an electronic device 800, including: a processor 801 and a memory 802 storing computer program instructions;
acquiring a state of charge of an energy storage system and a wind speed of a wind power system when a processor 801 executes computer program instructions, wherein the wind power system transmits electric energy to the energy storage system; when the state of charge of the energy storage system is larger than a preset starting threshold value and the wind speed of the wind power system meets a fan starting wind speed threshold value, the energy storage system transmits electric energy to the hydrogen production system to produce hydrogen; in response to the shutdown command, the wind power system, the energy storage system, and the hydrogen production system are sequentially shut down in a gradual decreasing manner.
The invention provides a computer readable storage medium, wherein computer program instructions are stored on the computer readable storage medium, and when the computer program instructions are executed by a processor, the state of charge of an energy storage system and the wind speed of a wind power system are obtained, and the wind power system transmits electric energy to the energy storage system; when the state of charge of the energy storage system is larger than a preset starting threshold value and the wind speed of the wind power system meets a fan starting wind speed threshold value, the energy storage system transmits electric energy to the hydrogen production system to produce hydrogen; in response to the shutdown command, the wind power system, the energy storage system, and the hydrogen production system are sequentially shut down in a gradual decreasing manner.
It is to be understood that the specific features, operations and details described herein before with respect to the method of the invention may be similarly applied to the apparatus and system of the invention, or vice versa. In addition, each step of the method of the present invention described above may be performed by a corresponding component or unit of the apparatus or system of the present invention.
It is to be understood that the various modules/units of the apparatus of the invention may be implemented in whole or in part by software, hardware, firmware, or a combination thereof. Each module/unit may be embedded in the processor of the computer device in hardware or firmware form or independent of the processor, or may be stored in the memory of the computer device in software form for the processor to call to perform the operations of each module/unit. Each module/unit may be implemented as a separate component or module, or two or more modules/units may be implemented as a single component or module.
In one embodiment, a computer device is provided that includes a memory and a processor, the memory having stored thereon computer instructions executable by the processor, the computer instructions, when executed by the processor, directing the processor to perform the steps of the method of the embodiments of the invention. The computer device may be broadly a server, a terminal, or any other electronic device having the necessary computing and/or processing capabilities. In one embodiment, the computer device may include a processor, memory, network interface, communication interface, etc. connected by a system bus. The processor of the computer device may be used to provide the necessary computing, processing and/or control capabilities. The memory of the computer device may include a non-volatile storage medium and an internal memory. The non-volatile storage medium may have an operating system, computer programs, etc. stored therein or thereon. The internal memory may provide an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface and communication interface of the computer device may be used to connect and communicate with external devices via a network. Which when executed by a processor performs the steps of the method of the invention.
The present invention may be implemented as a computer readable storage medium having stored thereon a computer program which, when executed by a processor, causes steps of a method of an embodiment of the present invention to be performed. In one embodiment, a computer program is distributed over a plurality of computer devices or processors coupled by a network such that the computer program is stored, accessed, and executed by one or more computer devices or processors in a distributed fashion. A single method step/operation, or two or more method steps/operations, may be performed by a single computer device or processor, or by two or more computer devices or processors. One or more method steps/operations may be performed by one or more computer devices or processors, and one or more other method steps/operations may be performed by one or more other computer devices or processors. One or more computer devices or processors may perform a single method step/operation or two or more method steps/operations.
Those of ordinary skill in the art will appreciate that the method steps of the present invention may be implemented by a computer program, which may be stored on a non-transitory computer readable storage medium, to instruct related hardware such as a computer device or a processor, which when executed causes the steps of the present invention to be performed. Any reference herein to memory, storage, database, or other medium may include non-volatile and/or volatile memory, as the case may be. Examples of nonvolatile memory include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage, hard disk, solid state disk, and the like. Examples of volatile memory include Random Access Memory (RAM), external cache memory, and the like.
The technical features described above may be arbitrarily combined. Although not all possible combinations of features are described, any combination of features should be considered to be covered by the description provided that such combinations are not inconsistent.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. The control method for producing hydrogen by wind off-grid is characterized by comprising the following steps:
Acquiring the charge state of an energy storage system and the wind speed of a wind power system, wherein the wind power system transmits electric energy to the energy storage system;
when the state of charge of the energy storage system is larger than a preset starting threshold value and the wind speed of the wind power system meets a fan starting wind speed threshold value, the energy storage system transmits electric energy to the hydrogen production system to produce hydrogen;
In response to the shutdown command, the wind power system, the energy storage system, and the hydrogen production system are sequentially shut down in a gradual decreasing manner.
2. The method of controlling off-grid hydrogen production from wind power as defined in claim 1, further comprising, prior to the energy storage system transferring electrical energy to the hydrogen production system for producing hydrogen:
When any one of the wind power system, the hydrogen production system and the energy storage system is operated for the first time after power-on, entering an initialization state, wherein the initialization state comprises reading initialization parameters and transmitting reset;
if a fault occurs during the initialization state, a shutdown state is entered.
3. The control method for off-grid hydrogen production by wind power as claimed in claim 2, further comprising, after the initialization state is ended:
When the state of charge of the energy storage system is smaller than a standby electric quantity threshold value and the wind speed meets a fan starting wind speed threshold value, the energy storage system enters a single charging mode;
When the charge state of the energy storage system is larger than the standby electric quantity threshold value, the energy storage system enters a standby mode;
When a first judging condition is met, the energy storage system in a standby state activates a charging function, wherein the first judging condition comprises that the duration of the energy storage system in the standby state is longer than the preset standby duration, the charge state of the energy storage system is smaller than a preset starting threshold value and the wind speed meets a fan starting wind speed threshold value.
4. The method for controlling off-grid hydrogen production by wind power as defined in claim 1, wherein the energy storage system transmits electrical energy to the hydrogen production system for producing hydrogen, comprising:
When a second judging condition is met, the energy storage system in a standby state activates a power transmission function, and the energy storage system enters an operation mode, wherein the operation mode is that the energy storage system transmits electric energy to the hydrogen production system to produce hydrogen, the second judging condition comprises that the state of charge of the energy storage system is larger than a preset starting threshold value and the wind speed meets a fan starting wind speed threshold value, and the power transmission function meets that the voltage is constant, and the bus voltage and the bus frequency are all within preset range values;
when the state of charge of the energy storage system in the operation mode is greater than a preset saturation threshold, adjusting the power input to the energy storage system by the wind power system, so that the state of charge of the energy storage system is between a preset starting threshold and a preset saturation threshold, wherein the power is adjusted within a preset wind power input range.
5. The control method for off-grid hydrogen production by wind power as in claim 4, further comprising:
when the energy storage system meets a third judging condition, the electric energy transmitted to the hydrogen production system is regulated to the maximum, and if the electric energy transmitted to the hydrogen production system is already the maximum, the electric energy input by the wind power system is reduced, wherein the third judging condition is that the state of charge of the energy storage system is higher than any one or more of a preset high-regulation charge threshold value, the electric power input by the wind power system and received by the energy storage system is greater than a preset first high-regulation electric power threshold value, the bus voltage is greater than a preset high-voltage threshold value and the current voltage frequency is greater than a preset high-frequency threshold value;
And when the energy storage system meets a fourth judging condition, adjusting the electric energy input by the wind power system to the maximum, and reducing the electric energy transmitted to the hydrogen production system if the electric energy input by the wind power system is adjusted to the maximum, wherein the fourth judging condition is that the state of charge of the energy storage system is lower than a preset low-regulation charge threshold value, the electric power transmitted to the hydrogen production system by the energy storage system is greater than any one or more of a preset second high-regulation electric power threshold value, the bus voltage is smaller than a preset low-voltage threshold value and the current voltage frequency is smaller than a preset low-frequency threshold value, and the preset first high-regulation electric power threshold value is greater than or equal to the preset second high-regulation electric power threshold value.
6. The method for controlling off-grid hydrogen production by wind power as in claim 1, wherein said sequentially turning off the wind power system, the energy storage system and the hydrogen production system in a gradual decreasing manner in response to a shutdown command comprises:
Responding to a shutdown instruction, executing a normal shutdown mode when the fault level in the shutdown instruction is smaller than or equal to a preset no-fault level, wherein the normal shutdown mode comprises gradually reducing hydrogen production power and fan power until the hydrogen production power is lower than a safe shutdown hydrogen production power threshold value and the fan power is lower than a safe shutdown fan power threshold value, and executing the shutdown instruction on a wind power system, a hydrogen production system and an energy storage system in sequence when the hydrogen production power is lower than the safe shutdown hydrogen production power threshold value and the fan power is lower than the safe shutdown fan power threshold value, wherein refrigeration devices in the wind power system, the hydrogen production system and the energy storage system are delayed to be shut down until the temperature requirement is met;
And responding to the shutdown command, executing a rapid shutdown mode when the failure level in the shutdown command is greater than a preset failure-free level, simultaneously executing the shutdown command on the wind power system, the hydrogen production system and the energy storage system, and monitoring the shutdown process until the shutdown is completed.
7. A control device for wind off-grid hydrogen production, comprising:
The system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the charge state of an energy storage system and the wind speed of a wind power system, and the wind power system transmits electric energy to the energy storage system;
The transmission module is used for transmitting electric energy to the hydrogen production system for producing hydrogen when the charge state of the energy storage system is larger than a preset starting threshold value and the wind speed of the wind power system meets a fan starting wind speed threshold value;
And the closing module is used for responding to the shutdown instruction and sequentially closing the wind power system, the energy storage system and the hydrogen production system in a gradually decreasing manner.
8. The control device for off-grid hydrogen production by wind power as in claim 7, wherein: the acquisition module, the transmission module and the closing module are controlled to execute the control method for off-grid hydrogen production by wind power according to any one of claims 1 to 6.
9. A computing device, comprising:
A communication interface, a processor, a memory;
wherein the memory is to store program instructions that, when executed by the processor, cause the computing device to implement the control method of wind off-grid hydrogen production of any one of claims 1 to 6.
10. A computer readable storage medium having stored thereon program instructions, which when executed by a computer cause the computer to implement the control method of wind off-grid hydrogen production according to any of claims 1 to 6.
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