Regulation and control method, device, equipment, medium and product of photo-thermal-electric integrated system

Abstract

The invention discloses a regulation and control method, device and equipment of a photo-thermal-electric integrated system, a medium and a product. The system comprises a solar heat collection device, a heat storage device, a water storage device, a steam power generation device, a power storage device and a photovoltaic panel array. The method comprises the following steps: predicting future solar radiation intensity and future illumination intensity according to historical solar radiation intensity and historical illumination intensity; predicting a future heat energy storage state of the heat storage device and a future electric energy storage state of the electricity storage device according to the future solar radiation intensity and the future illumination intensity; and generating an intelligent regulation and control strategy according to the future heat energy storage state and the future electric energy storage state. According to the technical scheme provided by the invention, reasonable combination and application of a solar heat collection system and a photovoltaic power generation system are realized, an intelligent adjustment mechanism is realized, power generation and energy storage strategies are dynamically adjusted according to real-time environmental changes, and the energy utilization efficiency of solar energy is optimized.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of new energy utilization, and in particular to a control method, device, equipment, medium and product of a photothermal-electric integrated system. Background Art

[0002] With the widespread application of renewable energy, photovoltaic power generation has attracted attention due to its clean and renewable characteristics. However, photovoltaic power generation systems are greatly affected by weather conditions, especially when there is insufficient sunlight, the power output is limited, affecting the stability of the system and resulting in low energy efficiency. Summary of the invention

[0003] The embodiments of the present invention provide a control method, device, equipment, medium and product of a photovoltaic, thermal and electric integrated system to optimize the energy utilization efficiency of solar energy according to real-time environmental changes.

[0004] In a first aspect, an embodiment of the present invention provides a control method for an integrated photothermal and electric system, the system comprising: a solar thermal collector, a heat storage device, a water storage device, a steam power generation device, an electric storage device, and a photovoltaic panel array; the solar thermal collector is used to convert light energy into heat energy and store it in the heat storage device; the photovoltaic panel array is used to convert light energy into electric energy and store it in the electric storage device; the heat storage device is used to heat the water in the water storage device to generate steam using the stored heat energy when the stored heat energy is greater than or equal to the heat energy required to heat the water in the water storage device to boiling; the electric storage device is used to heat the water in the water storage device to generate steam using the stored electric energy when the heat energy stored in the heat storage device is less than the heat energy required to heat the water in the water storage device to boiling; the steam power generation device is used to generate electricity using the steam generated by the water storage device; the method comprises:

[0005] Predict future solar radiation intensity and future light intensity based on historical solar radiation intensity and historical light intensity;

[0006] Predicting the future thermal energy storage state of the heat storage device and the future electrical energy storage state of the electrical storage device according to the future solar radiation intensity and the future light intensity;

[0007] An intelligent control strategy is generated according to the future thermal energy storage state and the future electrical energy storage state.

[0008] Optionally, the predicting of the future thermal energy storage state of the heat storage device and the future electrical energy storage state of the electrical storage device according to the future solar radiation intensity and the future light intensity includes:

[0009] E heat_storage (t) = E heat_storage(t-1)+E solar_heat (t)-E used_heat (t);

[0010] E electric_storage (t) = E electric_storage (t-1)+E pv (t)-E used_electric (t);

[0011] E solar_heat (t) = α × I solar (t)×A solar ;

[0012] E pv (t) = β × I pv (t)×A pv ;

[0013]

[0014] Among them, E heat_storage (t) represents the thermal energy storage state of the heat storage device at time t in the future, E solar_heat (t) represents the heat energy collected by the solar thermal collector at time t in the future, E used_heat (t) represents the thermal energy used in the heat storage device at time t in the future, E electric_storage (t) represents the energy storage state of the energy storage device at time t in the future, E pv (t) represents the electric energy generated by the photovoltaic array at time t in the future, E used_electric (t) represents the electric energy used in the power storage device at time t in the future, α represents the thermal energy conversion efficiency of the solar thermal collector, I solar (t) represents the solar radiation intensity at time t in the future, A solar represents the area of ​​the solar thermal collector, β represents the power conversion efficiency of the photovoltaic panel array, I pv (t) represents the light intensity at time t in the future, A pv represents the area of ​​the photovoltaic panel array, E water_heating (t) represents the thermal energy required to heat the water in the water storage device to boiling at time t in the future.

[0015] Optionally, the method further includes:

[0016] Real-time acquisition of the required thermal power of the system load, the required electrical power of the system load, the current thermal energy collected by the solar thermal collector, the current electrical energy generated by the photovoltaic panel array, the current thermal energy storage capacity of the thermal storage device, and the current electrical energy storage capacity of the electrical storage device;

[0017] The actual thermal energy consumption of the thermal storage device and the actual electrical energy consumption of the electrical storage device are determined according to the required thermal energy power, the required electrical energy power, the current thermal energy, the current electrical energy, the current thermal energy storage amount and the current electrical energy storage amount.

[0018] Optionally, determining the actual thermal energy consumption of the thermal storage device and the actual electrical energy consumption of the electrical storage device according to the required thermal energy power, the required electrical energy power, the current thermal energy, the current electrical energy, the current thermal energy storage amount, and the current electrical energy storage amount includes:

[0019] If P lload_heat ≤E solar_heat_generated , then E solar_heat_used =P load_heat , E pv_electric_used =0; if P load_heat >E solar_heat_generated And E electric_storage >E electric_storage_min ,but

[0020] If P load_electric ≤E pv_electric_generated , then E pv_electric_used =P load_electric If P load_electric >E pv_electric_generated And E electric_storage ≥P load_electric -E pv_electric_generated , then E pv_electric_used =P load_electric -E pv_electric_generated ;

[0021] Among them, P load_heat Denotes the required thermal power, E solar_heat_generated represents the current thermal energy, E solar_heat_used Indicates the actual heat energy consumption, E pv_electric_used Indicates the actual power consumption, E electric_storage Represents the current electrical energy storage capacity, E electric_storage_min represents the preset minimum power safety threshold of the power storage device, C electric2heat Indicates the efficiency coefficient of converting electrical energy into thermal energy, P load_electric Represents the required electrical power, E pv_electric_generated Indicates the current electrical energy.

[0022] Optionally, after the real-time acquisition of the required thermal power of the system load, the required electrical power of the system load, the current thermal energy collected by the solar thermal collector, the current electrical energy generated by the photovoltaic panel array, the current thermal energy storage capacity of the heat storage device, and the current electrical energy storage capacity of the electrical storage device, the further comprising:

[0023] Determining the current excess energy in real time according to the current electric energy and the required electric energy power;

[0024] The current excess energy is processed according to the current thermal energy storage amount.

[0025] Optionally, the processing the current excess energy according to the current thermal energy storage amount includes:

[0026] If E pv_electric_generated >P load_electric And E heat_storage <E heat_storage_max , then E electric2heat =min((E pv_electric_generated -P load_electric )×C electric2heat , E heat_storage_max -E heat_storage );

[0027] Among them, E pv_electric_generated Represents the current electric energy, P load_electric Represents the required electrical power, E heat_storage represents the current thermal energy storage, E heat_storage_max represents the preset maximum thermal energy storage capacity of the heat storage device, E electric2heat Indicates the conversion amount of electrical energy into thermal energy, C electric2heat It represents the efficiency coefficient of converting electrical energy into thermal energy.

[0028] In a second aspect, an embodiment of the present invention further provides a control device for a photothermal-electric integrated system, the system comprising: a solar thermal collector, a heat storage device, a water storage device, a steam power generation device, an electric storage device, and a photovoltaic panel array; the solar thermal collector is used to convert light energy into heat energy and store it in the heat storage device; the photovoltaic panel array is used to convert light energy into electric energy and store it in the electric storage device; the heat storage device is used to heat the water in the water storage device to generate steam using the stored heat energy when the stored heat energy is greater than or equal to the heat energy required to heat the water in the water storage device to boiling; the electric storage device is used to heat the water in the water storage device to generate steam using the stored electric energy when the heat energy stored in the heat storage device is less than the heat energy required to heat the water in the water storage device to boiling; the steam power generation device is used to generate electricity using the steam generated by the water storage device; the control device comprises:

[0029] A light energy parameter prediction module is used to predict future solar radiation intensity and future light intensity based on historical solar radiation intensity and historical light intensity;

[0030] An energy storage state prediction module, used for predicting the future thermal energy storage state of the heat storage device and the future electric energy storage state of the electric storage device according to the future solar radiation intensity and the future light intensity;

[0031] A control strategy generation module is used to generate an intelligent control strategy according to the future thermal energy storage state and the future electrical energy storage state.

[0032] In a third aspect, an embodiment of the present invention further provides a computer device, the computer device comprising:

[0033] one or more processors;

[0034] A memory for storing one or more programs;

[0035] When the one or more programs are executed by the one or more processors, the one or more processors implement the control method of the integrated photothermal and electric system provided in any embodiment of the present invention.

[0036] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the control method of the integrated photothermal and electric system provided by any embodiment of the present invention.

[0037] In a fifth aspect, an embodiment of the present invention further provides a computer program product, which includes a computer program. When the program is executed by a processor, the control method of the integrated photothermal and electric system provided by any embodiment of the present invention is implemented.

[0038] The embodiment of the present invention provides a control method for an integrated photothermal and electric system, which includes a solar thermal collector, a heat storage device, a water storage device, a steam power generation device, an electric storage device, and a photovoltaic panel array. The solar thermal collector converts light energy into heat energy and stores it in the heat storage device, and the photovoltaic panel array converts light energy into electric energy and stores it in the electric storage device. The water storage device and the steam power generation device are combined to realize a two-way conversion mechanism between heat energy and electric energy. The method predicts future environmental parameters by using past environmental parameters, and predicts the future energy storage state by using the predicted environmental parameters, and then generates an intelligent control strategy based on the prediction results, thereby realizing the reasonable combination of solar thermal collection and photovoltaic power generation systems, and realizing an intelligent adjustment mechanism to dynamically adjust the power generation and energy storage strategies according to real-time environmental changes, thereby optimizing the energy utilization efficiency of solar energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A flow chart of a control method for a photothermal-electrical integrated system provided in Embodiment 1 of the present invention;

[0040] Figure 2 A schematic diagram of the structure of a control device for an integrated photothermal and electric system provided in Embodiment 2 of the present invention;

[0041] Figure 3 This is a schematic diagram of the structure of a computer device provided in Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0043] It should be mentioned before discussing the exemplary embodiments in more detail that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the steps as sequential processes, many of the steps therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of the steps can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the accompanying drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0044] Embodiment 1

[0045] Figure 1 This is a flow chart of the control method of the integrated photothermal and electric system provided in Example 1 of the present invention. This embodiment can be applied to the situation where the solar power generation and energy storage strategy is dynamically adjusted based on real-time environmental changes. The method can be executed by the control device of the integrated photothermal and electric system provided in the embodiment of the present invention, which can be implemented by hardware and / or software, and can generally be integrated into a computer device. Among them, the integrated photothermal and electrical system includes: a solar thermal collector, a heat storage device, a water storage device, a steam power generation device, an electrical storage device and a photovoltaic panel array; the solar thermal collector is used to convert light energy into heat energy and store it in the heat storage device; the photovoltaic panel array is used to convert light energy into electrical energy and store it in the electrical storage device; the heat storage device is used to heat the water in the water storage device to generate steam using the stored heat energy when the stored heat energy is greater than or equal to the heat energy required to heat the water in the water storage device to boiling; the electrical storage device is used to heat the water in the water storage device to generate steam using the stored electrical energy when the heat energy stored in the heat storage device is less than the heat energy required to heat the water in the water storage device to boiling; the steam power generation device is used to generate electricity using the steam generated by the water storage device. Correspondingly, if Figure 1 As shown, the control method specifically includes the following steps:

[0046] S11. Predict future solar radiation intensity and future light intensity based on historical solar radiation intensity and historical light intensity.

[0047] S12. Predicting the future thermal energy storage state of the heat storage device and the future electrical energy storage state of the electrical storage device according to the future solar radiation intensity and the future light intensity.

[0048] S13. Generate an intelligent control strategy according to the future thermal energy storage state and the future electrical energy storage state.

[0049] Specifically, when there is sufficient sunshine, the solar thermal collector can obtain sufficient solar energy and convert it into heat energy to be stored in the heat storage device, and the heat energy stored in the heat storage device is sufficient to heat the water in the water storage device to boiling. At this time, the heat energy stored in the heat storage device is used to heat the water in the water storage device. When the solar thermal collector cannot obtain sufficient solar energy, and the heat energy stored in the heat storage device is insufficient to heat the water in the water storage device to boiling, the system will start the power storage device, and the water in the water storage device will be heated by the electric energy stored in the power storage device to ensure that the water in the water storage device continues to boil. Specifically, the electric energy stored in the power storage device can be used to heat the heat storage device or directly heat the water storage device, etc. The steam generated after the water in the water storage device boils is provided to the steam power generation device for power generation. The generated electric energy can be used for designated purposes or can be transported to the power storage device for storage. Furthermore, the system can automatically adjust the heating of the water storage device by the heat storage device according to the preset time period and the corresponding power demand, thereby optimizing the energy utilization efficiency. Among them, the power storage device can be an energy storage battery.

[0050] Applied to the above-mentioned integrated solar-thermal-electric system, the historical solar radiation intensity (received by the solar thermal collector) and the historical light intensity (received by the photovoltaic panel array) of the past period of time (such as 24 hours) can be first collected at preset time intervals (such as 5 minutes). Then, based on the obtained historical solar radiation intensity and historical light intensity, a time series prediction method can be used. Specifically, the bidirectional long short-term memory network (BiLSTM) and the attention mechanism can be used to predict the future solar radiation intensity and future light intensity in the future. Then, based on the obtained future solar radiation intensity and future light intensity, the future thermal energy storage state of the heat storage device and the future electric energy storage state of the power storage device at the corresponding time are predicted, so as to generate an intelligent control strategy based on the future thermal energy storage state and the future electric energy storage state, so as to realize automatic adjustment of the solar thermal collection and electric heat supply strategies, as well as the charge and discharge management of the power storage device according to the prediction results. Exemplarily, the intelligent control strategy may include: if it is predicted that the future thermal energy storage state and the future electrical energy storage state cannot meet the electricity demand, the system operating parameters can be adjusted in advance, such as increasing the working efficiency of photovoltaic panels, reducing unnecessary energy consumption, etc.; if it is predicted that the future thermal energy storage state and the future electrical energy storage state are sufficient, the excess energy can be considered for other purposes or stored for backup.

[0051] Optionally, the predicting of the future thermal energy storage state of the heat storage device and the future electrical energy storage state of the electrical storage device according to the future solar radiation intensity and the future light intensity includes:

[0052] E heat_storage (t) = E heat_storage (t-1)+E solar_heat (t)-E used_heat (t);

[0053] E electric_storage (t) = E electric_storage (t-1)+E pv (t)-E used_electric (t);

[0054] E solar_heat (t) = α × I solar (t)×A solar ;

[0055] E pv (t) = β × I pv (t)×A pv ;

[0056]

[0057] Among them, E heat_storage (t) represents the thermal energy storage state of the heat storage device at time t in the future, Esolar_heat (t) represents the heat energy collected by the solar thermal collector at time t in the future, E used_heat (t) represents the thermal energy used in the heat storage device at time t in the future, E electric_storage (t) represents the energy storage state of the energy storage device at time t in the future, E pv (t) represents the electric energy generated by the photovoltaic array at time t in the future, E used_electric (t) represents the electric energy used in the power storage device at time t in the future, α represents the thermal energy conversion efficiency of the solar thermal collector, I solar (t) represents the solar radiation intensity at time t in the future, A solar represents the area of ​​the solar thermal collector, β represents the power conversion efficiency of the photovoltaic panel array, I pv (t) represents the light intensity at time t in the future, A pv represents the area of ​​the photovoltaic panel array, E water_heating (t) represents the heat energy required to heat the water in the water storage device to boiling at time t in the future. Based on the above prediction algorithm formula, it is further possible to first collect the heat energy stored in the heat storage device, the electric energy stored in the power storage device, and the parameters that may affect the energy conversion efficiency such as the ambient temperature and humidity in the past period of time according to the preset time interval, and the heat energy collected by the solar thermal collector, the electric energy generated by the photovoltaic panel array, the heat energy stored in the heat storage device updated based on the previous moment, and the electric energy stored in the power storage device updated based on the previous moment, etc. at each historical moment can be calculated similarly to the above prediction algorithm formula. Then, parameters such as the water storage temperature and steam pressure in the future period of time can be predicted, and the initial heat energy storage amount E of the heat storage device at the beginning of the prediction can be determined. heat_storage (0) and the initial energy storage capacity E of the storage device electric_storage (0). Thus, the future thermal energy storage state and the future electrical energy storage state can be more accurately predicted by combining the newly obtained data.

[0058] On the basis of the above technical solution, optionally, the method also includes: acquiring in real time the required thermal power of the system load, the required electrical power of the system load, the current thermal energy collected by the solar thermal collector, the current electrical energy generated by the photovoltaic panel array, the current thermal energy storage capacity of the heat storage device, and the current electrical energy storage capacity of the electrical storage device; determining the actual thermal energy consumption of the heat storage device and the actual electrical energy consumption of the electrical storage device according to the required thermal power, the required electrical power, the current thermal energy, the current electrical energy, the current thermal energy storage capacity, and the current electrical energy storage capacity.

[0059] Specifically, during the use of the system, the heat energy demand judgment and the electric energy demand judgment can be performed in real time to determine the actual heat energy consumption of the heat storage device and the actual electric energy consumption of the electric storage device, so as to facilitate the intelligent allocation of energy. Optionally, the actual heat energy consumption of the heat storage device and the actual electric energy consumption of the electric storage device are determined according to the required heat energy power, the required electric energy power, the current heat energy, the current electric energy, the current heat energy storage capacity and the current electric energy storage capacity, including:

[0060] If P load_heat ≤E solar_heat_generated , then E solar_heat_used =P load_heat , E pv_electric_used =0; if P load_heat >E solar_heat_generated And E electric_storage >E electric_storage_min ,but

[0061] If P load_electric ≤E pv_electric_generated , then E pv_electric_used =P load_electric If P load_electric >E pv_electric_generated And E electric_storage ≥P load_electric -E pv_electric_generated , then E pv_electric_used =P load_electric -E pv_electric_generated ;

[0062] Among them, P load_heat Denotes the required thermal power, E solar_heat_generated represents the current thermal energy, E solar_heat_used Indicates the actual heat energy consumption, E pv_electric_used Indicates the actual power consumption, E electric_storage Represents the current electrical energy storage capacity, E electric_storage_min represents the preset minimum power safety threshold of the power storage device, C electric2heat Indicates the efficiency coefficient of converting electrical energy into thermal energy, P load_electric Represents the required electrical power, E pv_electric_generated Indicates the current electrical energy.

[0063] Further optionally, after the real-time acquisition of the required thermal power of the system load, the required electrical power of the system load, the current thermal energy collected by the solar thermal collector, the current electrical energy generated by the photovoltaic panel array, the current thermal energy storage capacity of the heat storage device, and the current electrical energy storage capacity of the electrical storage device, it also includes: determining the current excess energy in real time based on the current electrical energy and the required electrical power; and processing the current excess energy based on the current thermal energy storage capacity.

[0064] Specifically, at each moment, if the current electric energy generated by the photovoltaic panel array is greater than the electric energy power required by the system load, excess energy will be generated, so that the excess energy can be determined and processed in combination with the current thermal energy storage capacity of the thermal storage device to control the operation of each device and intelligently realize the reasonable conversion or utilization of energy. Optionally, the processing of the current excess energy according to the current thermal energy storage capacity includes:

[0065] If E pv_electric_generated >P load_electric And E heat_storage <E heat_storage_max , then E electric2heat =min((E pv_electric_generated -P load_electric )×C electric2heat , E heat_storage_max -E heat_storage );

[0066] Among them, E pv_electric_generated Represents the current electric energy, P load_electric Represents the required electrical power, E heat_storage represents the current thermal energy storage, E heat_storage_max represents the preset maximum thermal energy storage capacity of the heat storage device, E electric2heat Indicates the conversion amount of electrical energy into thermal energy, C electric2heat Indicates the efficiency coefficient of converting electrical energy into thermal energy. In addition, if E pv_electric_generated >P load_electric And E heat_storage =E heat_storage_max , the excess energy can be used for other designated purposes. The flexibility and efficiency of energy conversion can be further improved by optimizing the efficiency coefficient of converting electrical energy to thermal energy and the efficiency coefficient of converting thermal energy to electrical energy.

[0067] The technical solution provided in the embodiment of the present invention, the system mentioned includes a solar thermal collector, a heat storage device, a water storage device, a steam power generation device, an electricity storage device and a photovoltaic panel array, the solar thermal collector converts light energy into heat energy and stores it in the heat storage device, the photovoltaic panel array converts light energy into electricity and stores it in the electricity storage device, and then combines the water storage device and the steam power generation device to realize a two-way conversion mechanism between heat energy and electricity. The method mentioned predicts future environmental parameters by using past environmental parameters, and predicts the future energy storage state by using the predicted environmental parameters, and then generates an intelligent control strategy based on the prediction results, thereby realizing the reasonable combination of solar thermal collector and photovoltaic power generation system, and realizing an intelligent adjustment mechanism to dynamically adjust the power generation and energy storage strategies according to real-time environmental changes, thereby optimizing the energy utilization efficiency of solar energy.

[0068] Embodiment 2

[0069] Figure 2 This is a schematic diagram of the structure of the control device of the integrated photothermal and electric system provided in the second embodiment of the present invention. The device can be implemented by hardware and / or software, and can generally be integrated into a computer device to execute the control method of the integrated photothermal and electric system provided in any embodiment of the present invention. The integrated photothermal and electric system includes: a solar thermal collector, a heat storage device, a water storage device, a steam power generation device, an electric storage device, and a photovoltaic panel array; the solar thermal collector is used to convert light energy into heat energy and store it in the heat storage device; the photovoltaic panel array is used to convert light energy into electric energy and store it in the electric storage device; the heat storage device is used to heat the water in the water storage device to generate steam using the stored heat energy when the stored heat energy is greater than or equal to the heat energy required to heat the water in the water storage device to boiling; the electric storage device is used to heat the water in the water storage device to generate steam using the stored electric energy when the heat energy stored in the heat storage device is less than the heat energy required to heat the water in the water storage device to boiling; and the steam power generation device is used to generate electricity using the steam generated by the water storage device. Correspondingly, Figure 2 As shown, the control device includes:

[0070] A light energy parameter prediction module 21 is used to predict future solar radiation intensity and future illumination intensity based on historical solar radiation intensity and historical illumination intensity;

[0071] An energy storage state prediction module 22, used for predicting the future thermal energy storage state of the heat storage device and the future electric energy storage state of the electric storage device according to the future solar radiation intensity and the future light intensity;

[0072] The control strategy generation module 23 is used to generate an intelligent control strategy according to the future thermal energy storage state and the future electrical energy storage state.

[0073] The technical solution provided in the embodiment of the present invention, the system mentioned includes a solar thermal collector, a heat storage device, a water storage device, a steam power generation device, an electricity storage device and a photovoltaic panel array, the solar thermal collector converts light energy into heat energy and stores it in the heat storage device, the photovoltaic panel array converts light energy into electricity and stores it in the electricity storage device, and then combines the water storage device and the steam power generation device to realize a two-way conversion mechanism between heat energy and electricity. The device mentioned predicts future environmental parameters by using past environmental parameters, and predicts the future energy storage state by using the predicted environmental parameters, and then generates an intelligent control strategy based on the prediction results, thereby realizing the reasonable combination of solar thermal collector and photovoltaic power generation system, and realizing an intelligent adjustment mechanism, so as to dynamically adjust the power generation and energy storage strategies according to real-time environmental changes, and optimize the energy utilization efficiency of solar energy.

[0074] On the basis of the above technical solution, optionally, the energy storage state prediction module 22 is specifically used for:

[0075] E heat_storage (t) = E heat_storage (t-1)+E solar_heat (t)-E used_heat (t);

[0076] E electric_storage (t) = E electric_storage (t-1)+E pv (t)-E used_electric (t);

[0077] E solar_heat (t) = α × I solar (t)×A solar ;

[0078] E pv (t) = β × I pv (t)×A pv ;

[0079]

[0080] Among them, E heat_storage (t) represents the thermal energy storage state of the heat storage device at time t in the future, E solar_heat (t) represents the heat energy collected by the solar thermal collector at time t in the future, E used_heat (t) represents the thermal energy used in the heat storage device at time t in the future, E electric_storage (t) represents the energy storage state of the energy storage device at time t in the future, E pv (t) represents the electric energy generated by the photovoltaic array at time t in the future, E used_electric(t) represents the electric energy used in the power storage device at time t in the future, α represents the thermal energy conversion efficiency of the solar thermal collector, I solar (t) represents the solar radiation intensity at time t in the future, A solar represents the area of ​​the solar thermal collector, β represents the power conversion efficiency of the photovoltaic panel array, I pv (t) represents the light intensity at time t in the future, A pv represents the area of ​​the photovoltaic panel array, E water_heating (t) represents the thermal energy required to heat the water in the water storage device to boiling at time t in the future.

[0081] On the basis of the above technical solution, optionally, the control device of the integrated photothermal and electric system further includes:

[0082] A real-time application data acquisition module, used for acquiring in real time the required thermal power of the system load, the required electrical power of the system load, the current thermal energy collected by the solar thermal collector, the current electrical energy generated by the photovoltaic panel array, the current thermal energy storage capacity of the thermal storage device, and the current electrical energy storage capacity of the electrical storage device;

[0083] A real-time consumption determination module is used to determine the actual thermal energy consumption of the heat storage device and the actual electrical energy consumption of the electrical storage device based on the required thermal energy power, the required electrical energy power, the current thermal energy, the current electrical energy, the current thermal energy storage capacity and the current electrical energy storage capacity.

[0084] Based on the above technical solution, optionally, the real-time consumption determination module is specifically used for:

[0085] If P load_heat ≤E solar_heat_generated , then E solar_heat_used =P load_heat , E pv_electric_used =0; if P load_heat >E solar_heat_generated And E electric_storage >E electric_storage_min ,but

[0086] If P load_electric ≤E pv_electric_generated , then E pv_electric_used =P load_electric If P load_electric >E pv_electric_generated And E electric_storage ≥P load_electric -E pv_electric_generated , then E pv_electric_used =P load_electric -E pv_electric_generated ;

[0087] Among them, P load_heat Denotes the required thermal power, E solar_heat_generated represents the current thermal energy, E solar_heat_used Indicates the actual heat energy consumption, E pv_electric_used Indicates the actual power consumption, E electric_storage Represents the current electrical energy storage capacity, E electric_storage_min represents the preset minimum power safety threshold of the power storage device, C electric2heat Indicates the efficiency coefficient of converting electrical energy into thermal energy, P load_electric Represents the required electrical power, E pv_electric_generated Indicates the current electrical energy.

[0088] On the basis of the above technical solution, optionally, the control device of the integrated photothermal and electric system further includes:

[0089] The excess energy determination module is used to determine the current excess energy in real time according to the current electric energy and the required electric energy power after obtaining the required thermal energy power of the system load, the required electric energy power of the system load, the current thermal energy collected by the solar thermal collector, the current electric energy generated by the photovoltaic panel array, the current thermal energy storage capacity of the heat storage device and the current electric energy storage capacity of the electric storage device in real time;

[0090] The excess energy processing module is used to process the current excess energy according to the current thermal energy storage amount.

[0091] On the basis of the above technical solution, optionally, the excess energy processing module is specifically used for:

[0092] If E pv_electric_generated >P load_electric And E heat_storage <E heat_storage_max , then E electric2heat =min((E pv_electric_generated -P load_electric )×C electric2heat , E heat_storage_max -E heat_storage );

[0093] Among them, E pv_electric_generated Represents the current electric energy, P load_electric Represents the required electrical power, E seat_storage represents the current thermal energy storage, E heat_storage_max represents the preset maximum thermal energy storage capacity of the heat storage device, E electric2heat Indicates the conversion amount of electrical energy into thermal energy, C electric2heat It represents the efficiency coefficient of converting electrical energy into thermal energy.

[0094] The control device of the integrated photothermal and electric system provided in the embodiment of the present invention can execute the control method of the integrated photothermal and electric system provided in any embodiment of the present invention, and has the functional modules and beneficial effects corresponding to the execution method.

[0095] It is worth noting that in the embodiment of the control device of the above-mentioned integrated photothermal and electric system, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0096] Embodiment 3

[0097] Figure 3 The schematic diagram of the structure of the computer device provided for the third embodiment of the present invention shows a block diagram of an exemplary computer device suitable for implementing the implementation mode of the present invention. Figure 3 The computer device shown is only an example and should not limit the functions and scope of use of the embodiments of the present invention. Figure 3 As shown, the computer device includes a processor 31, a memory 32, an input device 33 and an output device 34; the number of processors 31 in the computer device can be one or more. Figure 3 Taking a processor 31 as an example, the processor 31, memory 32, input device 33 and output device 34 in the computer device can be connected through a bus or other means. Figure 3 The example of connecting through bus is taken in the following.

[0098] The memory 32, as a computer-readable storage medium, can be used to store software programs, computer executable programs and modules, such as program instructions / modules corresponding to the control method of the integrated photothermal-electric system in the embodiment of the present invention (for example, the light energy parameter prediction module 21, the energy storage state prediction module 22 and the control strategy generation module 23 in the control device of the integrated photothermal-electric system). The processor 31 executes various functional applications and data processing of the computer device by running the software programs, instructions and modules stored in the memory 32, that is, realizes the control method of the integrated photothermal-electric system described above.

[0099] The memory 32 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system and at least one application required for a function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 32 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 32 may further include a memory remotely arranged relative to the processor 31, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0100] The input device 33 can be used to obtain historical solar radiation intensity and historical light intensity, and generate key signal input related to user settings and function control of computer equipment, etc. The output device 34 can be used to output intelligent control strategies, etc.

[0101] Embodiment 4

[0102] Embodiment 4 of the present invention also provides a storage medium containing computer executable instructions, which, when executed by a computer processor, is used to execute a control method for an integrated photothermal and electric system, the system comprising: a solar thermal collector, a heat storage device, a water storage device, a steam power generation device, an electric storage device, and a photovoltaic panel array; the solar thermal collector is used to convert light energy into heat energy and store it in the heat storage device, the photovoltaic panel array is used to convert light energy into electric energy and store it in the electric storage device, the heat storage device is used to heat the water in the water storage device to generate steam using the stored heat energy when the stored heat energy is greater than or equal to the heat energy required to heat the water in the water storage device to boiling, the electric storage device is used to heat the water in the water storage device to generate steam using the stored electric energy when the heat energy stored in the heat storage device is less than the heat energy required to heat the water in the water storage device to boiling, and the steam power generation device is used to generate electricity using the steam generated by the water storage device. The method comprises:

[0103] Predict future solar radiation intensity and future light intensity based on historical solar radiation intensity and historical light intensity;

[0104] Predicting the future thermal energy storage state of the heat storage device and the future electrical energy storage state of the electrical storage device according to the future solar radiation intensity and the future light intensity;

[0105] An intelligent control strategy is generated according to the future thermal energy storage state and the future electrical energy storage state.

[0106] The storage medium may be any of various types of memory devices or storage devices. The term "storage medium" is intended to include: installation media, such as CD-ROM, floppy disk or tape device; computer system memory or random access memory, such as DRAM, DDR RAM, SRAM, EDO RAM, Rambus RAM, etc.; non-volatile memory, such as flash memory, magnetic media (such as hard disk or optical storage); registers or other similar types of memory elements, etc. The storage medium may also include other types of memory or combinations thereof. In addition, the storage medium may be located in the computer system in which the program is executed, or may be located in a different second computer system, which is connected to the computer system via a network (such as the Internet). The second computer system may provide program instructions to the computer for execution. The term "storage medium" may include two or more storage media that may reside in different locations (e.g., in different computer systems connected via a network). The storage medium may store program instructions (e.g., embodied as a computer program) that may be executed by one or more processors.

[0107] Of course, the computer executable instructions of a storage medium including computer executable instructions provided in an embodiment of the present invention are not limited to the method operations described above, and can also execute related operations in the control method of the integrated photothermal and electric system provided in any embodiment of the present invention.

[0108] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, which carry computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0109] The program code embodied on the computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0110] Through the above description of the implementation methods, the technicians in the relevant field can clearly understand that the present invention can be implemented by means of software and necessary general hardware, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0111] Embodiment 5

[0112] Embodiment 5 of the present invention further provides a computer program product, which includes a computer program (also referred to as code, instruction), which can be stored in a computer-readable storage medium. When the computer program is executed by a processor, it is used to execute the control method of the integrated photothermal and electric system provided in any of the above embodiments, and has the corresponding beneficial effects of the execution method.

[0113] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A control method for an integrated photothermal and electric system, characterized in that: The system comprises: a solar thermal collector, a heat storage device, a water storage device, a steam power generation device, an electric storage device and a photovoltaic panel array; the solar thermal collector is used to convert light energy into heat energy and store it in the heat storage device; the photovoltaic panel array is used to convert light energy into electric energy and store it in the electric storage device; the heat storage device is used to heat the water in the water storage device to generate steam using the stored heat energy when the stored heat energy is greater than or equal to the heat energy required to heat the water in the water storage device to boiling; the electric storage device is used to heat the water in the water storage device to generate steam using the stored electric energy when the heat energy stored in the heat storage device is less than the heat energy required to heat the water in the water storage device to boiling; the steam power generation device is used to generate electricity using the steam generated by the water storage device; the method comprises: Predict future solar radiation intensity and future light intensity based on historical solar radiation intensity and historical light intensity; Predicting the future thermal energy storage state of the heat storage device and the future electrical energy storage state of the electrical storage device according to the future solar radiation intensity and the future light intensity; An intelligent control strategy is generated according to the future thermal energy storage state and the future electrical energy storage state.

2. The control method of the integrated photothermal and electric system according to claim 1, characterized in that: The future thermal energy storage state of the heat storage device and the future electrical energy storage state of the electrical storage device are predicted according to the future solar radiation intensity and the future light intensity, include: E heat_storage (t)=E heat_storage (t-1)+E solar_heat (t)-E used_heat (t); E electric_storage (t)=E electric_storage (t-1)+E pv (t)-E used_electric (t); E solar_heat (t)=α×I solar (t)×A solar ; E pv (t)=β×I pv (t)×A pv ; Among them, E heat_storage (t) represents the thermal energy storage state of the heat storage device at time t in the future, E solar_heat (t) represents the heat energy collected by the solar thermal collector at time t in the future, E used_heat (t) represents the thermal energy used in the heat storage device at time t in the future, E electric_storage (t) represents the energy storage state of the energy storage device at time t in the future, E pv (t) represents the electric energy generated by the photovoltaic array at time t in the future, E used_electric (t) represents the electric energy used in the power storage device at time t in the future, α represents the thermal energy conversion efficiency of the solar thermal collector, I solar (t) represents the solar radiation intensity at time t in the future, A solar represents the area of ​​the solar thermal collector, β represents the power conversion efficiency of the photovoltaic panel array, I pv (t) represents the light intensity at time t in the future, A pv represents the area of ​​the photovoltaic panel array, E water_heating (t) represents the thermal energy required to heat the water in the water storage device to boiling at time t in the future.

3. The control method of the integrated photothermal and electric system according to claim 1, characterized in that: The method further comprises: Real-time acquisition of the required thermal power of the system load, the required electrical power of the system load, the current thermal energy collected by the solar thermal collector, the current electrical energy generated by the photovoltaic panel array, the current thermal energy storage capacity of the thermal storage device, and the current electrical energy storage capacity of the electrical storage device; The actual thermal energy consumption of the thermal storage device and the actual electrical energy consumption of the electrical storage device are determined according to the required thermal energy power, the required electrical energy power, the current thermal energy, the current electrical energy, the current thermal energy storage amount and the current electrical energy storage amount.

4. The control method of the integrated photothermal and electric system according to claim 3, characterized in that: The determining the actual thermal energy consumption of the thermal storage device and the actual electrical energy consumption of the electrical storage device according to the required thermal energy power, the required electrical energy power, the current thermal energy, the current electrical energy, the current thermal energy storage amount, and the current electrical energy storage amount comprises: If P load_heat ≤E solar_heat_generated , then E solar_heat_used =P load_heat , E pv_electric_used =0; if P load_heat >E solar_heat_generated And E electric_storage >E electric_storage_min ,but If P load_electric ≤E pv_electric_generated , then E pv_electric_used =P load_electric If P load_electric >E pv_electric_generated And E electric_storage ≥P load_electric -E pv_electric_generated , then E pv_electric_used =P load_electric -E pv_electric_generated ; Among them, P load_heat Denotes the required thermal power, E solar_heat_generated represents the current thermal energy, E solar_heat_used Indicates the actual heat energy consumption, E pv_electric_used Indicates the actual power consumption, E electric_storage Represents the current electrical energy storage capacity, E electric_storage_min represents the preset minimum power safety threshold of the power storage device, C electric2heat Indicates the efficiency coefficient of converting electrical energy into thermal energy, P load_electric Represents the required electrical power, E pv_electric_generated Indicates the current electrical energy.

5. The control method of the integrated photothermal and electric system according to claim 3, characterized in that: After obtaining the required thermal power of the system load, the required electrical power of the system load, the current thermal energy collected by the solar thermal collector, the current electrical energy generated by the photovoltaic panel array, the current thermal energy storage capacity of the thermal storage device, and the current electrical energy storage capacity of the electrical storage device in real time, the method further includes: Determining the current excess energy in real time according to the current electric energy and the required electric energy power; The current excess energy is processed according to the current thermal energy storage amount.

6. The control method of the integrated photothermal and electric system according to claim 5, characterized in that: The processing of the current excess energy according to the current thermal energy storage amount includes: If E pv_electric_generated >P load_electric And E heat_storage <E heat_storage_max , then E electric2heat =min((E pv_electric_generated -P load_electric )×C electric2heat ,E heat_storage_max -E heat_storage ); Among them, E pv_electric_generated Represents the current electric energy, P load_electric Represents the required electrical power, E heat_storage represents the current thermal energy storage capacity, E heat_storage_max represents the preset maximum thermal energy storage capacity of the heat storage device, E electric2heat Indicates the conversion amount of electrical energy into thermal energy, C electric2heat It represents the efficiency coefficient of converting electrical energy into thermal energy.

7. A control device for an integrated photothermal and electric system, characterized in that: The system comprises: a solar thermal collector, a heat storage device, a water storage device, a steam power generation device, an electric storage device and a photovoltaic panel array; the solar thermal collector is used to convert light energy into heat energy and store it in the heat storage device; the photovoltaic panel array is used to convert light energy into electric energy and store it in the electric storage device; the heat storage device is used to heat the water in the water storage device to generate steam using the stored heat energy when the stored heat energy is greater than or equal to the heat energy required to heat the water in the water storage device to boiling; the electric storage device is used to heat the water in the water storage device to generate steam using the stored electric energy when the heat energy stored in the heat storage device is less than the heat energy required to heat the water in the water storage device to boiling; the steam power generation device is used to generate electricity using the steam generated by the water storage device; the control device comprises: A light energy parameter prediction module is used to predict future solar radiation intensity and future light intensity based on historical solar radiation intensity and historical light intensity; An energy storage state prediction module, used for predicting the future thermal energy storage state of the heat storage device and the future electric energy storage state of the electric storage device according to the future solar radiation intensity and the future light intensity; A control strategy generation module is used to generate an intelligent control strategy according to the future thermal energy storage state and the future electrical energy storage state.

8. A computer device, characterized in that: include: one or more processors; A memory for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the control method of the integrated photothermal and electric system as described in any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the control method of the integrated photothermal and electric system as claimed in any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the computer program implements the control method of the integrated photothermal and electric system as claimed in any one of claims 1 to 6.

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