A multi-energy complementary local area heating system regulation method

Abstract

This invention relates to the field of heating system regulation technology, specifically to a method for regulating a multi-energy complementary local area heating system. This method quantifies the beneficial heat ratio within the current heating area based on temperature information, and determines the unit heat load of each heating device by combining the number of heating devices in the area. It quantifies the load intensity of each heating device by combining the operating power of the heating devices within a time period. Based on the load intensity and actual heat changes in the heating area, the heat loss of each heating device can be quantified. The heating capacity of the solar thermal source is quantified using information such as ambient temperature and solar radiation intensity, and then, combined with the heat loss, a regulation coefficient is determined to adjust the compensating heat provided by the solar thermal source to the heating area. This invention accurately sets the compensating energy of the solar thermal source by analyzing the operating parameters of the heating devices and the state parameters within the heating area during the actual heating process, combined with the actual environmental conditions.

Description

Technical Field

[0001] This invention relates to the field of heating system regulation technology, specifically to a method for regulating a multi-energy complementary local area heating system. Background Technology

[0002] Localized district heating systems refer to heating facilities that provide heat to a specific area, typically including centralized heating, community heating, and distributed heating. Multi-energy complementarity refers to the coordinated use of multiple energy sources to improve energy efficiency and overall system stability. In heating systems, this often combines centralized heating, solar energy, and other energy sources to form a flexible heating network. Through reasonable regulation methods, the advantages of various energy sources can be fully utilized to achieve optimal heating configuration.

[0003] Existing control methods mainly rely on experience, resulting in slow response times to sudden changes in heating supply. Furthermore, multi-energy complementary systems involve scheduling relationships between energy supply equipment and renewable energy sources, making it difficult to effectively schedule solar thermal sources according to actual conditions when heating supply changes. Summary of the Invention

[0004] To address the technical problem that existing technologies cannot effectively schedule solar thermal sources according to the actual conditions of the heating area, the present invention aims to provide a method for regulating a multi-energy complementary local area heating system. The specific technical solution adopted is as follows: This invention proposes a method for regulating a multi-energy complementary localized regional heating system, the method comprising: The internal temperature of the heating area is obtained at various times within a preset time period. Based on the trend of the difference between the desired temperature and the internal temperature, the heat supply benefit ratio of the heating equipment in the heating area is obtained. Based on the heat supply benefit ratio and the number of heating equipment in the heating area, the unit heat load of the heating equipment is obtained. For each heating device, the load intensity is obtained based on the operating power within a time period and the unit heat load; the heat change in the heating area within a time period is obtained; and the heat loss of each heating device is obtained based on the load intensity, heat change, and ideal heat production within a time period. The heating capacity of the solar thermal source is obtained based on the ambient temperature and average solar irradiance of the heating area during the time period; the adjustment coefficient of the renewable energy utilization ratio of the solar thermal source is obtained based on the heating losses of all heating equipment and the heating capacity of the solar thermal source. The compensation heat from the solar thermal source to the heating area is adjusted according to the adjustment coefficient.

[0005] Furthermore, the method for obtaining the beneficial heating ratio includes: The absolute value of the difference between the desired temperature and the internal temperature is curve-fitted to obtain the difference curve; the average tangent slope on the difference curve is obtained, and the average tangent slope is negatively correlated, mapped, and normalized to obtain the heating benefit ratio.

[0006] Furthermore, the method for obtaining the unit heat load includes: The ratio of the heat supply benefit ratio to the number of heating devices in the heating area is taken as the unit heat load.

[0007] Furthermore, the method for obtaining the load intensity includes: Obtain the average power difference between the operating power and the full-load rated power at all times within the time period; use the ratio of the unit heat load to the average power difference as the load intensity.

[0008] Furthermore, the method for obtaining the heat loss includes: The ratio of the ideal heat output to the heat change is taken as the initial heat loss, and the product of the initial heat loss and the load intensity is taken as the heat loss.

[0009] Furthermore, the method for obtaining the heating capacity includes: The average internal temperature within the heating area over a time period is obtained, and the average ambient temperature of the environmental area within the heating area is obtained. The temperature difference between the average ambient temperature and the average internal temperature is obtained. After normalizing the temperature difference, the product of the difference and the average light intensity is taken as the heating capacity.

[0010] Furthermore, the method for obtaining the heating capacity includes: The solar thermal source is also equipped with a water storage device to obtain the water temperature difference between the average inlet water temperature and the average outlet water temperature of the water storage device over a period of time. The average temperature within the heating area over a time period is obtained, and the average ambient temperature of the environmental area within the heating area is obtained; the product of the difference between the average ambient temperature and the average temperature and the average light intensity is used as the initial heating capacity. The heating capacity is the product of the water temperature difference and the initial heating capacity.

[0011] Furthermore, the method for obtaining the adjustment coefficient includes: The average heat loss of all heating equipment is normalized to obtain the first parameter. The heating capacity is normalized to obtain a second parameter; The sum of the first parameter and the second parameter is used as the adjustment coefficient.

[0012] Furthermore, the method for obtaining the compensating heat includes: The initial heat supply provided by the solar thermal source under the initial renewable energy utilization ratio is obtained, and the product of the initial heat supply and the adjustment coefficient is used as the compensation heat.

[0013] Furthermore, the time period is set to one hour.

[0014] The present invention has the following beneficial effects: This invention quantifies the specific situation of heating equipment based on various actual heating information of the heating area within a time period. First, the beneficial heating ratio within the current heating area can be quantified based on temperature information; this ratio characterizes the heating capacity of the heating equipment. Then, the unit heat load of each heating equipment can be determined by combining the number of heating equipment in the area. Next, the load intensity of each heating equipment can be quantified by combining the operating power of the equipment within the time period. Based on the load intensity and changes in heat within the actual heating area, the heat loss of each heating equipment can be quantified. That is, the heat loss represents the degree of solar thermal source compensation required for the current heating area; the greater the loss, the less the heating capacity of the heating equipment itself is sufficient to meet the heating demand, requiring more heat from the solar thermal source for compensation. This invention considers that the supplementary energy from the solar thermal source also needs to take into account the current solar energy situation. Therefore, it quantifies the heating capacity of the solar thermal source through information such as ambient temperature and light intensity, and then determines an adjustment coefficient based on the heat loss to adjust the compensating heat provided by the solar thermal source to the heating area. This invention accurately sets the compensation energy of the solar heat source by analyzing the operating parameters of the heating equipment and the state parameters within the heating area during the actual heating process, combined with the actual environmental conditions. Attached Figure Description

[0015] To more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A flowchart illustrating a multi-energy complementary local area heating system control method according to an embodiment of the present invention; Figure 2 This is a schematic diagram of temperature monitoring curves within a heating area provided in one embodiment of the present invention. Detailed Implementation

[0017] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of a multi-energy complementary localized regional heating system control method proposed according to the present invention. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0019] The specific scheme of the multi-energy complementary local area heating system control method provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Please see Figure 1 The diagram illustrates a flowchart of a multi-energy complementary localized heating system control method according to an embodiment of the present invention, the method comprising: Step S1: Obtain the internal temperature of the heating area at various times within a preset time period. Based on the trend of the difference between the internal temperature and the desired temperature, obtain the heat supply benefit ratio of the heating equipment in the heating area. Based on the heat supply benefit ratio and the number of heating equipment in the heating area, obtain the unit heat load of the heating equipment.

[0021] In this embodiment of the invention, various sensors are deployed in the heating area to collect key data during the heating period, such as temperature and humidity monitoring equipment, flow meters, solar radiation sensors, and energy meters. This embodiment targets localized heating areas within large industrial parks. Monitoring equipment can be rationally arranged according to the specific layout of the heating area to ensure coverage of all key locations such as boiler rooms, production workshops, and thermal storage tanks. Furthermore, the monitoring equipment can be connected to the control center via wired or wireless transmission to ensure real-time data transmission.

[0022] In one embodiment of the present invention, the time period is set to one hour. That is, the present invention acquires heating information, environmental information and other information every hour, and then performs judgment processing and feedback control signals.

[0023] It should be noted that, in this embodiment of the invention, after acquiring information from various dimensions, preprocessing operations are performed to remove noisy or abnormal data, ensuring data accuracy. Simultaneously, visual parameters such as internal temperature curves and operating power curves can be displayed on the visualization panel of the control center.

[0024] In this embodiment of the invention, in order to effectively assess the heating status within the current heating area, the internal temperature at each moment within a preset time period is first obtained. The internal temperatures at all moments can be combined to form a visualized internal temperature curve, such as... Figure 2 The diagram illustrates a temperature monitoring curve within a heating area according to an embodiment of the present invention. In the heating area, a desired temperature is set, and the heating equipment needs to provide heat so that the internal temperature reaches the desired temperature. The difference between the desired temperature and the real-time temperature represents the heating effect during the current heating process. Therefore, this embodiment of the invention further obtains the heating benefit ratio of the heating equipment within the heating area based on the changing trend of the difference between the desired temperature and the internal temperature. Because the closer the temperature is to the desired temperature during the heating process, the better the current heating effect; therefore, the closer the difference is to 0, the better the current heating effect, i.e., the larger the heating benefit ratio.

[0025] Furthermore, considering that for a heating area, more heating equipment indicates lower heating pressure on individual equipment during the heating season, the heat supply benefit ratio characterizes the heating status of the area. Therefore, the unit heat load of the heating equipment can be obtained by combining the heat supply benefit ratio and the number of heating equipment. The unit heat load can be considered as the amount of heat that a heating equipment provides during the current heating season in the heating area.

[0026] Preferably, in this embodiment of the invention, the method for obtaining the beneficial ratio of heat supply includes: The absolute value of the difference between the desired temperature and the internal temperature is curve-fitted to obtain a difference curve. The average tangent slope on the difference curve is obtained, and the average tangent slope is negatively correlated, mapped, and normalized to obtain the heating benefit ratio. That is, the smaller the average tangent slope, the more the heating is directed towards the desired temperature over the time period, and the larger the heating benefit ratio. In this embodiment of the invention, the negative correlation mapping and normalization method uses an exponential function mapping method with the natural constant as the base. The opposite of the data is used as the power of the exponential function, and the function output value is the result after negative correlation mapping and normalization. Other existing mathematical algorithms for negative correlation mapping and normalization can also be used, which are not limited or elaborated here.

[0027] Preferably, in this embodiment of the invention, the method for obtaining the unit heat load includes: The ratio of the heat supply benefit ratio to the number of heating devices in the heating area is taken as the unit heat load.

[0028] Step S2: For each heating device, obtain the load intensity based on the operating power and unit heat load within the time period; obtain the heat change of the heating area within the time period; and obtain the heat loss of each heating device based on the load intensity, heat change, and ideal heat production within the time period.

[0029] Analyzing only the unit heat load is insufficient to effectively assess the heating status of each heating device during the heating period. Therefore, it is also necessary to combine the power data during operation to obtain the heat loss generated by each heating device during operation, which can be used to assess the heating pressure of the heating devices in the current heating area.

[0030] This invention analyzes each heating device individually, statistically analyzing its operating power over a given time period. Based on the operating power, it can be determined whether the heating device is operating at full load or overload. Therefore, by combining this with the unit heat load, the composite intensity of each heating device in the current heating area can be obtained. Simultaneously, the ideal heat output of each heating device during that time period can be obtained based on its parameters. The heat change in the heating area during the time period is obtained. Comparing the ideal heat output with the heat change characterizes the actual effect of the heating device during actual heating. If the ideal heat output is significantly greater than the heat change, it indicates a significant heat loss during the heating process. Therefore, by combining this with the load intensity, the heat loss of each heating device can be obtained.

[0031] Preferably, in this embodiment of the invention, the method for obtaining the load intensity includes: The average power difference between the operating power and the rated power at full load is obtained for all moments within a time period. The ratio of the unit heat load to the average power difference is taken as the load intensity. It should be noted that since the rated power at full load is the maximum power of the heating equipment, a smaller average power difference indicates that the heating equipment is closer to its maximum power; that is, the more fully the heating equipment is operating, the greater the heating pressure, and the greater the load intensity. It should also be noted that the average power difference is the absolute value of the difference between the average operating power and the rated power at full load over all moments.

[0032] Preferably, in one embodiment of the present invention, the method for obtaining heat loss includes: The ratio of ideal heat production to the change in heat output is used as the initial heat loss. This ratio characterizes the relative magnitude of ideal heat production and the change in heat output; the larger the ratio, the greater the heat loss. The product of the initial heat loss and the load intensity is then used as the total heat loss.

[0033] It should be noted that the ideal heat output can be obtained by combining specific heating equipment, such as heat pump equipment. During the monitoring period, the product of the operating time and power of the heat pump equipment can be used as the expected heat output value. This is a well-known technique among those skilled in the art. Methods for obtaining the ideal heat output of other heating equipment will not be elaborated upon.

[0034] It should be noted that the change in heat can be measured by temperature detection equipment, and the temperature can be converted into a heat value through unit conversion. The specific technical means are well known to those skilled in the art and will not be elaborated here.

[0035] Step S3: Obtain the heating capacity of the solar thermal source based on the ambient temperature and average solar irradiance of the heating area during the time period; obtain the adjustment coefficient of the renewable energy utilization ratio of the solar thermal source based on the heat loss of all heating equipment and the heating capacity of the solar thermal source.

[0036] For multi-energy complementary heating systems, energy compensation requires consideration not only of the current heating status of the heating equipment in the heating area but also of the heating capacity of the renewable energy sources used for compensation. When the heating capacity of the renewable energy sources is strong and the heating pressure of the heating equipment is high, more supplementary heat can be provided. Therefore, this embodiment of the invention statistically analyzes the ambient temperature and average solar irradiance of the heating area over a given time period. The ambient temperature is the average ambient temperature over the entire time period, which can be detected by a temperature sensor; the average solar irradiance can be detected and statistically analyzed by a solar radiation sensor. Higher ambient temperature and greater average solar irradiance indicate a stronger heating capacity of the solar thermal source in the current system. An adjustment coefficient for the renewable energy utilization ratio of the solar thermal source is obtained by combining the heating losses of all heating equipment and the heating capacity of the solar thermal source.

[0037] Preferably, in this embodiment of the invention, the method for obtaining heating capacity includes: The average internal temperature of the heating area over a given time period is obtained, as is the average ambient temperature of the surrounding area. The temperature difference between the average ambient temperature and the average internal temperature is also obtained. A larger temperature difference indicates a greater relative temperature between the ambient and internal areas, meaning the heat dissipates more slowly within the heating area. Considering the possibility of negative temperature differences, the temperature difference is normalized, and its product with the average light intensity is used as the heating capacity. In this embodiment, range standardization is used for normalization.

[0038] Preferably, in one embodiment of the present invention, the solar heat source is further equipped with a water storage device. The inlet and outlet water temperatures of the water storage device can also characterize the solar heating capacity under the current environment. The method for obtaining the heating capacity includes: The temperature difference between the average inlet water temperature and the average outlet water temperature of the water storage device over a given time period is obtained. When the outlet water temperature is significantly higher than the inlet water temperature, it indicates that the solar collector can effectively convert solar energy into heat energy and effectively heat the water. This signifies high heating efficiency of renewable energy sources, and a larger temperature difference usually means that the collector can heat the water quickly, reflecting the system's ability to respond rapidly to changes in external heat sources, which is also a manifestation of high efficiency. In this embodiment of the invention, the water temperature difference is the absolute value of the difference between the average inlet water temperature and the average outlet water temperature.

[0039] The average temperature within the heating area over a time period is obtained, and the average ambient temperature of the heating area is also obtained. The product of the difference between the average ambient temperature and the average temperature and the average light intensity is used as the initial heating capacity.

[0040] The heating capacity is calculated by multiplying the water temperature difference by the initial heating capacity.

[0041] Preferably, in this embodiment of the invention, the method for obtaining the adjustment coefficient includes: The average heat loss of all heating equipment is normalized to obtain a first parameter. The heating capacity is then normalized to obtain a second parameter. In this embodiment of the invention, the normalization method for the first and second parameters is the hyperbolic tangent function mapping method.

[0042] The sum of the first and second parameters is used as the adjustment coefficient. The larger the adjustment coefficient, the higher the utilization rate of renewable energy in the current heating process. Compensation through solar energy can effectively reduce the cost of additional system output, thereby improving the fault tolerance of the heating system in the face of abnormal and sudden situations.

[0043] Step S4: Adjust the compensating heat of the solar heat source to the heating area according to the adjustment coefficient.

[0044] The adjustment coefficient obtained from the above steps can be used to obtain further compensating heat based on the heat generated by the current renewable energy utilization ratio of the solar thermal source, thereby compensating for the system's heating supply.

[0045] In this embodiment of the invention, the initial heat supply provided by the solar thermal source under the initial renewable energy utilization ratio is obtained, and the product of the initial heat supply and the adjustment coefficient is used as the compensation heat. That is, the compensation heat should be the additional heat required by the adjusted solar thermal source. In this embodiment of the invention, the adjustment method can be executed once per hour to achieve timely and effective heating regulation. The control center can also record the specific data during each regulation process, which is convenient for staff to analyze the utilization of the solar thermal source.

[0046] In summary, this invention quantifies the specific conditions of heating equipment based on various actual heating information of the heating area within a time period. It quantifies the beneficial heating ratio within the current heating area based on temperature information, and determines the unit heat load of each heating device by combining the number of heating devices in the area. It quantifies the load intensity of each heating device by combining the operating power of the heating devices within the time period. Based on the load intensity and changes in heat within the actual heating area, the heat loss of each heating device can be quantified. The heating capacity of the solar thermal source is quantified using information such as ambient temperature and light intensity, and then an adjustment coefficient is determined based on the heat loss to adjust the compensating heat provided by the solar thermal source to the heating area. This invention accurately sets the compensating energy of the solar thermal source by analyzing the operating parameters of the heating equipment and the state parameters within the heating area during the actual heating process, combined with the actual environmental conditions.

[0047] It should be noted that the order of the above embodiments of the present invention is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. The processes depicted in the accompanying drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0048] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

Claims

1. A method for regulating a multi-energy complementary localized regional heating system, characterized in that, The method includes: The internal temperature of the heating area is obtained at various times within a preset time period. Based on the trend of the difference between the desired temperature and the internal temperature, the heat supply benefit ratio of the heating equipment in the heating area is obtained. Based on the heat supply benefit ratio and the number of heating equipment in the heating area, the unit heat load of the heating equipment is obtained. For each heating device, the load intensity is obtained based on the operating power within a time period and the unit heat load; the heat change in the heating area within a time period is obtained; and the heat loss of each heating device is obtained based on the load intensity, heat change, and ideal heat production within a time period. The heating capacity of the solar thermal source is obtained based on the ambient temperature and average solar irradiance of the heating area during the time period; the adjustment coefficient of the renewable energy utilization ratio of the solar thermal source is obtained based on the heating losses of all heating equipment and the heating capacity of the solar thermal source. The compensation heat from the solar thermal source to the heating area is adjusted according to the adjustment coefficient.

2. The method for regulating a multi-energy complementary local area heating system according to claim 1, characterized in that, The method for obtaining the beneficial ratio of heating includes: The absolute value of the difference between the desired temperature and the internal temperature is curve-fitted to obtain the difference curve; the average tangent slope on the difference curve is obtained, and the average tangent slope is negatively correlated, mapped, and normalized to obtain the heating benefit ratio.

3. The method for regulating a multi-energy complementary local area heating system according to claim 1, characterized in that, The method for obtaining the unit heat load includes: The ratio of the heat supply benefit ratio to the number of heating devices in the heating area is taken as the unit heat load.

4. The method for regulating a multi-energy complementary local area heating system according to claim 1, characterized in that, The method for obtaining the load intensity includes: Obtain the average power difference between the operating power and the full-load rated power at all times within the time period; use the ratio of the unit heat load to the average power difference as the load intensity.

5. The method for regulating a multi-energy complementary local area heating system according to claim 1, characterized in that, The method for obtaining the heat loss includes: The ratio of the ideal heat output to the heat change is taken as the initial heat loss, and the product of the initial heat loss and the load intensity is taken as the heat loss.

6. The method for regulating a multi-energy complementary local area heating system according to claim 1, characterized in that, The method for obtaining the heating capacity includes: The average internal temperature within the heating area over a time period is obtained, and the average ambient temperature of the environmental area within the heating area is obtained. The temperature difference between the average ambient temperature and the average internal temperature is obtained. After normalizing the temperature difference, the product of the difference and the average light intensity is taken as the heating capacity.

7. The method for regulating a multi-energy complementary local area heating system according to claim 1, characterized in that, The method for obtaining the heating capacity includes: The solar thermal source is also equipped with a water storage device to obtain the water temperature difference between the average inlet water temperature and the average outlet water temperature of the water storage device over a period of time. The average temperature within the heating area over a time period is obtained, and the average ambient temperature of the environmental area within the heating area is obtained; the product of the difference between the average ambient temperature and the average temperature and the average light intensity is used as the initial heating capacity. The heating capacity is the product of the water temperature difference and the initial heating capacity.

8. The method for regulating a multi-energy complementary local area heating system according to claim 1, characterized in that, The method for obtaining the adjustment coefficient includes: The average heat loss of all heating equipment is normalized to obtain the first parameter. The heating capacity is normalized to obtain a second parameter; The sum of the first parameter and the second parameter is used as the adjustment coefficient.

9. A method for regulating a multi-energy complementary local area heating system according to claim 1, characterized in that, The method for obtaining the compensating heat includes: The initial heat supply provided by the solar thermal source under the initial renewable energy utilization ratio is obtained, and the product of the initial heat supply and the adjustment coefficient is used as the compensation heat.

10. The method for regulating a multi-energy complementary local area heating system according to claim 1, characterized in that, The time period is set to one hour.

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