Solar ground source heat pump coupling heat supply control method and system
By employing a solar-ground source heat pump coupled heating control method in high-altitude and high-latitude regions, and dynamically adjusting the heating mode and power, the problems of soil thermal balance and equipment wear in traditional heat pump systems under extreme environments have been solved, achieving efficient and economical heating results.
Patent Information
- Application Number
- CN202511849046.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-01-20
AI Technical Summary
In high-altitude and high-latitude regions, traditional heat pump systems struggle to balance heating demand with soil heat recovery in extreme low-temperature environments, and lack dynamic monitoring and compensation mechanisms for the permafrost temperature field, leading to permafrost degradation and equipment wear and tear.
The solar-ground source heat pump coupled heating control method is adopted. By dynamically dividing the three working modes into normal, transition and polar night, and combining real-time soil temperature monitoring and frozen soil safety threshold, a step-by-step adjustment mechanism is adopted to optimize heating control, so as to achieve soil thermal balance and system energy efficiency optimization.
It achieves efficient synergy between solar energy and ground source heat pumps, prevents soil thermal imbalance, extends system life, reduces operating costs, and provides an environmentally friendly and reliable heating solution.
Smart Images
Figure CN121363765A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of heat pump, in particular to a solar ground source heat pump coupling heat supply control method and system. BACKGROUND
[0002] With the development of heat pump technology, compression type ground source heat pump gradually becomes an important choice for heating system in cold regions due to its ability to extract heat from low temperature heat source with high efficiency. However, in high altitude and high latitude regions, extreme low temperature environment and special geological conditions pose a severe challenge to heat pump system. In such regions, permafrost layer exists all year round, the initial temperature of soil is low (usually ≤0°C), and the solar energy supplement capacity is limited due to the influence of polar night or short sunshine, which leads to excessive extraction of soil heat during long-term operation of ground source heat pump, causing problems such as permafrost degradation and ground subsidence. Although traditional heat pump technology can adapt to low temperature heat source by adjusting evaporation temperature, its control strategy is mostly designed based on plain or temperate climate, without fully considering the characteristics of low soil heat capacity and frequent freeze-thaw cycle in high altitude / high latitude regions. In the prior art, methods relying only on heat pump power limitation or static threshold control cannot balance the contradiction between heat supply demand and soil heat recovery, and lack dynamic monitoring and compensation mechanism for permafrost temperature field. In addition, the existing system does not design adaptive switching logic for energy supply risk in extreme environment when multiple energy sources are coordinated (such as solar-heat pump coupling), which leads to overloading operation of heat pump in polar night or snowstorm weather, aggravating equipment wear and tear and soil heat imbalance. Therefore, there is an urgent need for a ground source heat pump control method for high altitude / high latitude regions, which dynamically adjusts the heat extraction rate of heat pump, couples seasonal energy storage and intelligent prediction algorithm, and realizes the dual goals of soil heat balance protection and system energy efficiency optimization. SUMMARY
[0003] In order to overcome the shortcomings of permafrost heat imbalance, the present application provides a solar ground source heat pump coupling heat supply control method and system.
[0004] The technical implementation scheme of the present application is: a solar ground source heat pump coupling heat supply control method, comprising the following steps: S1: obtaining the working mode of solar ground source heat pump in high altitude and high latitude regions, the working mode including normal mode, transition mode and polar night mode; based on the working mode, determining the reference heat supply control value of solar ground source heat pump; S2: based on the reference heat supply control value, calculating the working mode limit value of solar ground source heat pump, the working mode limit value being the bearing limit value of the working mode of solar ground source heat pump; based on the working mode limit value, adjusting the reference heat supply control value of solar ground source heat pump; S3: based on the adjusted reference heat supply control value, calculating the working mode limit value after actual operation of solar ground source heat pump; S4: determining the solar ground source heat pump coupling heat supply control method based on the working mode limit value after the actual operation.
[0005] Preferably, the working mode of the solar ground source heat pump in the high-altitude and high-latitude area is obtained, and the working mode includes a normal mode, a transition mode and a polar night mode, comprising: If the solar energy is used as the main heat supply mode during the day and the ground source heat pump is used as the main heat supply mode at night during the operation of the solar ground source heat pump, the working mode of the solar ground source heat pump is defined as the normal mode. If the solar energy or the ground source heat pump is used as the main heat supply mode during the day and the ground source heat pump is used as the main heat supply mode at night during the operation of the solar ground source heat pump, the working mode of the solar ground source heat pump is defined as the transition mode. If the ground source heat pump is used as the main heat supply mode during the day or at night during the operation of the solar ground source heat pump, the working mode of the solar ground source heat pump is defined as the polar night mode.
[0006] Preferably, the reference heat supply control value of the solar ground source heat pump is determined based on the working mode, comprising: Based on the normal mode, an additional heat supply adjustment value is extracted and defined as a first additional heat supply adjustment value. Based on the transition mode, an additional heat supply adjustment value is extracted and defined as a second additional heat supply adjustment value. Based on the polar night mode, an additional heat supply adjustment value is extracted and defined as a third additional heat supply adjustment value. The additional heat supply adjustment value refers to the electric energy consumed by driving the ground source heat pump for heat supply, which is converted into equivalent energy consumption by the electricity price parameter. Based on the first additional heat supply adjustment value, the second additional heat supply adjustment value and the third additional heat supply adjustment value, the reference heat supply control value of the solar ground source heat pump is calculated by a reference heat supply control formula.
[0007] Preferably, the reference heat supply control value of the solar ground source heat pump is calculated based on the first additional heat supply adjustment value, the second additional heat supply adjustment value and the third additional heat supply adjustment value by a reference heat supply control formula, comprising: wherein, the reference heat supply control value is, the mode weight coefficient is, the solar direct heat supply amount in the first mode is, the solar direct heat supply amount in the first mode is, the ground source heat pump heat supply amount in the first mode is, the ground source heat pump heat supply amount in the first mode is, the ground source heat pump heat supply amount in the first mode is, The electric energy consumed by the ground source heat pump in the mode, wherein the electric energy consumed by the ground source heat pump in the mode is calculated according to the following formula: wherein, is the ground source heat pump power, is the first is the additional electric energy consumption cost in the mode, is the operation time, is the electricity price.
[0008] Preferably, the working mode limit value of the solar ground source heat pump is calculated based on the reference heating control value, and the working mode limit value refers to the bearing limit value of the working mode of the solar ground source heat pump, and the working mode limit value comprises: The real-time soil temperature in each heating process is obtained based on the reference heating control value; The frozen soil safety temperature threshold and the temperature critical change amount are extracted based on the real-time soil temperature; The bearing limit value of the working mode of the solar ground source heat pump is calculated through the working mode bearing limit value formula; the working mode bearing limit value formula is as follows: wherein, is the maximum power allowed by the heat pump, is the rated maximum power of the heat pump, is the real-time soil temperature, is the frozen soil safety temperature threshold, is the temperature critical change amount, is the nominal power of the heat pump.
[0009] Preferably, the reference heating control value of the solar ground source heat pump is adjusted based on the working mode limit value, and the reference heating control value comprises: The working mode limit value after the change of each reference heating control value is extracted based on the working mode limit value calculated by the working mode bearing limit value formula, and is defined as the first working mode limit value; If the first working mode limit value shows an upward trend or is stable at the maximum working power of the ground source heat pump, the reference heating control value is reduced at a first step speed, otherwise the reference heating control value is maintained; Similarly, the working mode limit value after the change of each reference heating control value is extracted, and is defined as the second working mode limit value; If the second working mode limit value is first maintained at the original working mode limit value, and then shows an upward trend or is stable at the maximum working power of the ground source heat pump, the reference heating control value is reduced at a second step speed; Similarly, the working mode limit values of the following two cases are extracted: the reference heating control value changes and exceeds the maximum allowable power of the ground source heat pump; the reference heating control value does not change but exceeds the maximum allowable power of the ground source heat pump, and is defined as a third working mode limit value; If the third working mode limit value continuously exceeds the maximum allowable power of the ground source heat pump, the reference heating control value is reduced at a third step speed.
[0010] Preferably, the reference heating control value is reduced at the first step speed, including: The first step speed> The second step speed> The third step speed.
[0011] Preferably, the working mode limit value after the actual operation of the solar ground source heat pump is calculated based on the adjusted reference heating control value, including: Based on the adjusted reference heating control value each time, the working mode limit value after the actual operation of the solar ground source heat pump is recalculated using the working mode endurance limit value formula.
[0012] Preferably, the solar ground source heat pump coupling heating control method is determined based on the working mode limit value after the actual operation, including: If the working mode limit value after the actual operation is less than the original working mode limit value, the adjusted reference heating control value is extracted; Based on the adjusted reference heating control value, the corresponding reference heating control values in the three modes are extracted respectively; The corresponding reference heating control values in the three modes are used as the peak values of the reference heating control values of each working mode.
[0013] Preferably, the solar ground source heat pump coupling heating control system, including: The working mode recognition module dynamically divides the normal, transition and polar night modes by real-time monitoring of solar radiation intensity and duration through a light sensor and combining historical meteorological data; in the normal mode, solar energy collector heating is preferentially used during the day, and the ground source heat pump is switched to at night; in the transition mode, the two energy sources are used in combination; in the polar night mode, the ground source heat pump is completely relied on, and a backup heat source is started; The reference heating control module calculates the reference heating control value using the weighted average method based on the mode weight coefficient, and integrates the solar direct heating capacity, the heat pump heating capacity and the additional power cost; the electricity price parameter is integrated to convert the power cost into equivalent energy consumption, ensuring the physical consistency of the formula calculation; The working mode limit dynamic calculation module deploys ground temperature sensors to monitor the temperature of the frozen soil layer. Combining the frozen soil safety threshold and the critical temperature change, it dynamically calculates the maximum allowable power of the heat pump using the working mode withstand limit value formula to prevent soil thermal imbalance. When the limit is exceeded, an early warning is triggered. Combining frozen soil temperature monitoring data and normalized energy consumption parameters, the heat pump power limit is dynamically optimized to prevent soil thermal imbalance. The stepped dynamic adjustment module adjusts the benchmark heating control value in three steps according to the trend of limit changes; the first step has the fastest speed reduction and is used for emergency over-limit situations; the second step has a moderate speed reduction and is used to deal with potential risks; the third step has a gentle speed reduction and maintains long-term stability. The real-time monitoring and feedback module integrates an IoT sensor network to collect environmental data and equipment status.
[0014] Beneficial Effects: This invention dynamically divides operating modes into normal, transitional, and polar night modes to precisely adapt to the extreme climates of high-altitude and high-latitude regions, achieving efficient synergy between solar energy and ground source heat pumps. Based on real-time soil temperature monitoring and frozen soil safety thresholds, the system dynamically optimizes baseline heating control values, effectively avoiding soil thermal imbalance and ensuring long-term operational stability. The unique stepped adjustment mechanism adjusts heating power at differentiated rates for different risk levels, balancing rapid response and equipment protection, significantly extending system lifespan. Simultaneously, by optimizing ground source heat pump energy consumption and mode weight allocation, the proportion of high-power-consumption modes is reduced, lowering operating expenses while ensuring dimensional consistency and system stability, providing an environmentally friendly, reliable, economical, and efficient sustainable heating solution for frigid regions. Attached Figure Description
[0015] Figure 1 This is a flowchart of the solar ground source heat pump coupled heating control method of the present invention; Figure 2 This is a schematic diagram of the structure of the solar ground source heat pump coupled heating control system of the present invention. Detailed Implementation
[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0017] Example 1: A solar-ground source heat pump coupled heating control method, such as... Figure 1 As shown, it includes the following steps: S1: Obtain the working mode of the solar ground source heat pump in a high-altitude and high-latitude area, the working mode including a normal mode, a transition mode, and a polar night mode; determine a reference heating control value of the solar ground source heat pump based on the working mode; S2: Calculate a working mode limit value of the solar ground source heat pump based on the reference heating control value, the working mode limit value being a bearing limit value of the working mode of the solar ground source heat pump; adjust the reference heating control value of the solar ground source heat pump based on the working mode limit value; S3: Calculate the working mode limit value after actual operation of the solar ground source heat pump based on the adjusted reference heating control value; S4: Determine a coupled heating control method of the solar ground source heat pump based on the working mode limit value after actual operation.
[0018] Obtain the working mode of the solar ground source heat pump in a high-altitude and high-latitude area, the working mode including a normal mode, a transition mode, and a polar night mode, comprising: If the solar ground source heat pump operates in a mode in which solar energy is used as the main heating method during the day and the ground source heat pump is used as the main heating method at night, the working mode of the solar ground source heat pump is defined as the normal mode; If the solar ground source heat pump operates in a mode in which solar energy or the ground source heat pump is used as the main heating method during the day and the ground source heat pump is used as the main heating method at night, the working mode of the solar ground source heat pump is defined as the transition mode; If the solar ground source heat pump operates in a mode in which the ground source heat pump is used as the main heating method during the day or at night, the working mode of the solar ground source heat pump is defined as the polar night mode.
[0019] Further, the mode definition and identification are as follows: The three modes are dynamically divided through the light sensor and historical meteorological data: the normal mode: solar energy dominates during the day and the ground source heat pump supplements at night. The transition mode: mixed energy (solar energy / heat pump alternately during the day) and the ground source heat pump mainly supplies at night. The polar night mode: relies on the heat pump all day and starts the standby energy. The mode switching is based on the real-time irradiance intensity and time length threshold.
[0020] Determine the reference heating control value of the solar ground source heat pump based on the working mode, comprising: Based on the normal mode, extract an additional heating adjustment value and define it as a first additional heating adjustment value; Based on the transition mode, extract an additional heating adjustment value and define it as a second additional heating adjustment value; Based on the polar night mode, extract an additional heating adjustment value and define it as a third additional heating adjustment value; The additional heating regulation value refers to the electrical energy consumed by using an electric-driven ground source heat pump for heating, and the electricity cost is converted into equivalent energy consumption through electricity price parameters. Based on the first additional heating adjustment value, the second additional heating adjustment value, and the third additional heating adjustment value, the reference heating control value of the solar ground source heat pump is calculated using the reference heating control formula.
[0021] Further explanation: The technical logic and definition of the additional heating adjustment value are as follows: Normal Mode (First Additional Heating Adjustment Value): During the day, when solar energy dominates, ground source heat pumps are needed to supplement heating at night. The additional electricity cost is the electricity bill for the ground source heat pumps operating at night. Transitional Mode (Second Additional Heating Adjustment Value): During the day, solar energy and ground source heat pumps are used in combination. The additional cost is the electricity consumption of the ground source heat pumps during certain periods. Polar Night Mode (Third Additional Heating Adjustment Value): The system relies entirely on ground source heat pumps. The additional cost is the electricity consumption of the ground source heat pumps operating throughout the day. Weighting coefficients. The time percentage of the response mode (e.g., normal mode accounts for 60%) =0.6).
[0022] Technical benefits and economic optimization: By deducting electricity costs and prioritizing low-energy consumption modes, operating costs are reduced. Mode synergy: Dynamically balancing the energy supply ratio of solar energy and ground source heat pumps improves the overall energy efficiency of the system.
[0023] For a brief example, in normal mode: solar energy provides 800 kWh of heating during the day, and ground source heat pump provides 200 kWh of heating at night, with an electricity cost of 50 yuan. =0.6. Polar Night Mode: 1200kWh heating capacity from a full-source heat pump, electricity cost 300 yuan, weighted... =0.1.
[0024] Calculation of baseline heating control values: =(0.6*(800+200-50)+0.3* +0.1*(0+1200-300)) / (0.6+0.3+0.1)=585kWh; To clarify, the additional electricity cost only includes direct electricity charges and does not include equipment depreciation or maintenance costs.
[0025] Based on the first additional heating adjustment value, the second additional heating adjustment value, and the third additional heating adjustment value, the reference heating control value of the solar ground source heat pump is calculated using the reference heating control formula, including: The reference heating control formula is as follows: in, The baseline heating control value, These are the pattern weight coefficients. For the first In this mode, solar energy directly provides heat. For the first In this mode, the ground source heat pump provides heating. For the first The electrical energy consumed by the ground source heat pump during operation under the specified mode is calculated using the following formula: in, For the power of the ground source heat pump, For the first Additional power consumption cost in this mode For runtime, For electricity prices.
[0026] To further explain, the electricity price parameter ( The additional heating adjustment value needs to be dynamically adjusted based on real-time or preset electricity prices to ensure uniformity of measurement and economic optimization. The normalization logic for the additional heating adjustment value ( The physical meaning of ) is that the ground source heat pump is in the first The electrical energy consumed (kWh) during operation in this mode is determined by the cost of electricity ( (Unit: Yuan) Through electricity price parameters (Unit: Yuan / kWh) is calculated using normalization. The electricity price parameter ensures that the addition and subtraction of energy (kWh) in the formula have physical meaning, and also implicitly contains an economic optimization objective: high electricity cost modes (such as polar night modes). When the value exceeds the preset polar night mode threshold, it is adjusted by a weighting coefficient. Reduce the impact of high-electricity-cost modes (such as polar night mode); reduce the impact of low-electricity-cost modes (such as normal mode). When the value is less than the preset normal mode threshold, it is determined by the weighting coefficient. Increase the proportion of low-electricity-cost modes (such as normal mode).
[0027] According to the pattern weight coefficient ( Weighted average of heating modes (solar + ground source heat pump), minus normalized electricity consumption. It achieves multi-mode coordination: dynamically allocates energy according to the environment and reduces dependence on a single heat source; economic optimization: by deducting electricity costs, it prioritizes low-energy consumption modes. The unit is kWh.
[0028] For a brief example, in normal mode: 800 kWh of solar heating during the day, and 200 kWh of ground source heat pump heating at night. The ground source heat pump power... =8 kW, running time =6h, electricity price = 0.6 Yuan / kWh. Extra electricity cost: = 8 * 6 * 0.6 = 28.8 Yuan; Normalized energy consumption: = 8 * 6 = 48 kWh; Formula calculation: = 800 + 200 - 48 = 952 kWh.
[0029] Supplementary explanation, weight coefficient Need to be dynamically adjusted according to actual running time, not a fixed value. For example, during the polar night, the weight needs to be reduced To avoid excessive dependence on ground source heat pump.
[0030] The working mode limit value of the solar ground source heat pump is calculated based on the reference heating control value, and the working mode limit value refers to the bearing limit value of the working mode of the solar ground source heat pump, including: Based on the reference heating control value, the real-time soil temperature in each heating process is obtained; Based on the real-time soil temperature, the frozen soil safety temperature threshold and the temperature critical change amount are extracted; The bearing limit value of the working mode of the solar ground source heat pump is calculated by the working mode bearing limit value formula; the working mode bearing limit value formula is as follows: Among them, is the maximum power allowed by the heat pump, is the rated maximum power of the heat pump, is the real-time soil temperature, is the frozen soil safety temperature threshold, is the temperature critical change amount, is the nominal power of the heat pump.
[0031] Further explanation is that, for example, the real-time monitoring of soil temperature , combined with the frozen soil safety threshold = -2℃ and the critical temperature change amount = 5℃, the maximum allowable power of the ground source heat pump is calculated; when , the ground source heat pump power is limited to prevent frozen soil degradation. Unit: kW.
[0032] Stepwise dynamic adjustment: first step speed reduction: fast load reduction when emergency over-limit (such as 20% power over-limit, 5% reduction per second). Second step speed reduction: moderate speed when potential risk (10% over-limit, 2% reduction per second). Third step speed reduction: slow adjustment when long-term stable (5% over-limit, 1% reduction per second).
[0033] Technical benefits, including frozen soil protection: power limiting prevents soil temperature from falling below a safe threshold. System stability: stepped adjustment avoids frequent start-stop cycles, extending equipment lifespan.
[0034] For example, real-time soil temperature =-3℃, =10kW, then: =min(15kW,((-3-(-2)) / 5)*10)=min(15kW,-2kW)→0kW(shutdown protection; Additional explanation, If a negative value exists, the minimum value must be set to 0 to avoid reverse power commands. When <0, it is forcibly set to 0, and the ground source heat pump will shut down for protection.
[0035] Based on the aforementioned operating mode limits, the reference heating control value of the solar ground source heat pump is adjusted, including: Based on the working mode limit value calculated by the formula, the working mode limit value after each change of the benchmark heating control value is extracted and defined as the first working mode limit value. If the first operating mode limit shows an upward trend or stabilizes at the maximum operating power of the ground source heat pump, the reference heating control value is reduced at the first step rate; otherwise, the reference heating control value is maintained. Similarly, extract the operating mode limit value that does not change for each benchmark heating control value and define it as the second operating mode limit value; If the second operating mode limit first remains at the original operating mode limit, and then shows an upward trend or stabilizes at the maximum operating power of the ground source heat pump, then the reference heating control value is reduced at the second step rate. Similarly, the following two scenarios are defined as the operating mode limits: exceeding the maximum allowable power of the ground source heat pump after the baseline heating control value is changed; and exceeding the maximum allowable power of the ground source heat pump even if the baseline heating control value is not changed. If the limit for the third operating mode continues to exceed the maximum allowable power of the ground source heat pump, the baseline heating control value will be reduced at a third-step rate.
[0036] The baseline heating control value is reduced at a first-step rate, including: First-step speed > Second-step speed > Third-step speed.
[0037] To further clarify, the first operating mode limit (the limit after the baseline heating control value is changed) is triggered under the following conditions: after adjusting the baseline heating control value, if the first operating mode limit (the maximum allowable power of the ground source heat pump) is exceeded... The power output of the heat pump continues to rise or stabilize at its maximum power. ). Action: Reduce the reference heating control value at the fastest speed (first ladder speed) to quickly mitigate the risk of overrunning. Logic: Quick response is needed when there is an emergency overrun to avoid low soil temperature or equipment overload.
[0038] Second working mode limit value (limit value when the reference value is not changed), trigger condition: When the reference heating control value is not adjusted, the second working mode limit value is first maintained at the original value and then rises or stabilizes at . Action: Reduce the reference heating control value at a medium speed (second ladder speed) to deal with potential risks. Logic: Avoid frequent adjustments while preventing risk accumulation.
[0039] Third working mode limit value (limit value for continuous overrun), trigger condition: Regardless of whether the reference heating control value is changed, the third working mode limit value continuously exceeds . Action: Reduce the reference heating control value at the slowest speed (third ladder speed) to maintain long-term stability. Logic: Long-term overrun requires gentle adjustment to reduce system shock.
[0040] Ladder speed relationship: First ladder speed > Second ladder speed > Third ladder speed, reflecting the hierarchical control strategy of "emergency first, potential second, and long-term slowest".
[0041] Example explanation, assuming in the polar night mode, the ground source heat pump causes the soil temperature to approach the permafrost safety threshold ( =-2℃), the real-time soil temperature =-3℃: First ladder speed trigger: After adjusting the reference heating control value, the first working mode limit value still quickly approaches (eg. from 12kW to 14kW), reduce the heating power at the fastest speed (eg. 5% per second) to prevent permafrost degradation. Second ladder speed trigger: If the reference heating control value is not adjusted, but the second working mode limit value slowly rises to , then gradually reduce the power at a medium speed (eg. 2% per second). Third ladder speed trigger: If the third working mode limit value still continuously overruns after adjustment (eg. 15kW > 14kW), then fine-tune at the slowest speed (eg. 1% per second) to avoid frequent start-stop.
[0042] Based on the adjusted reference heating control value, the working mode limit value after the actual operation of the solar ground source heat pump is calculated, including: Based on the adjusted reference heating control value, the working mode limit value after the actual operation of the solar ground source heat pump is calculated using the working mode limit value formula.
[0043] Further explanation, technical logic, according to the adjusted reference heating control value, recalculate the ground source heat pump power limit value And compared with the original limit value. If the actual limit value is less than the original limit value, it indicates that the adjustment is effective, otherwise further optimization is needed.
[0044] Technical effect, closed-loop feedback: approach the optimal control point through iterative optimization. Adaptive learning: accumulate historical data to improve prediction accuracy.
[0045] Briefly, after adjustment, the benchmark value is reduced by 20%, the actual limit value =12kW (originally 15kW), indicating that the soil thermal state has improved.
[0046] For supplementary explanation, the decrease in limit value does not mean system failure, but a positive signal of soil thermal recovery.
[0047] Based on the actual working mode limit value after operation, a solar ground source heat pump coupled heating control method is determined, comprising: If the actual working mode limit value after operation is less than the original working mode limit value, the adjusted benchmark heating control value is extracted; Based on the adjusted benchmark heating control value, the corresponding benchmark heating control values in the three modes are extracted respectively; The corresponding benchmark heating control values in the three modes are taken as the peak value of the benchmark heating control value of each working mode.
[0048] Further explanation, technical logic, extract the peak value of the benchmark heating control value in each mode as the reference upper limit for subsequent control. For example, the peak value of normal mode =1000kWh, the peak value of extreme night mode =600kWh.
[0049] Technical effect, mode isolation: prevent normal / transition / extreme night mode from affecting the whole. Priority management: prioritize basic heating in extreme night mode.
[0050] Briefly, in extreme night mode, if the actual demand is 800kWh, but the peak value is only 600kWh, start the backup heat source to make up the gap.
[0051] For supplementary explanation, the peak value is not a fixed value and needs to be dynamically adjusted with the season (such as higher in winter than in summer). The peak value refers to the maximum heating capacity allowed in the current mode, which is dynamically adjusted according to real-time environmental parameters.
[0052] Embodiment 2: Based on embodiment 1, a solar ground source heat pump coupled heating control system, as shown in Figure 2 , comprising: The working mode recognition module monitors the solar radiation intensity and duration in real time through the light sensor, dynamically divides three modes of normal, transition and polar night in combination with historical meteorological data; in the normal mode, the solar collector is preferentially used for heating during the day, and the ground source heat pump is switched to at night; in the transition mode, the two energy sources are used in combination; in the polar night mode, the ground source heat pump is completely relied on, and the standby heat source is started; The benchmark heating control module calculates the benchmark heating control value by using the weighted average method based on the mode weight coefficient, and integrates the direct solar heating amount, the heat pump heating amount and the additional power cost; the electricity price parameter is integrated to convert the power cost into equivalent energy consumption, and to ensure the physical consistency of the formula calculation; The working mode limit dynamic calculation module monitors the frozen soil layer temperature by deploying the ground temperature sensor, combines the frozen soil safety threshold and the critical temperature change amount, and dynamically calculates the maximum allowable power of the heat pump by using the working mode bearing limit value formula to prevent soil heat imbalance; when the limit value is exceeded, an early warning is triggered; in combination with the frozen soil temperature monitoring data and the normalized energy consumption parameters, the heat pump power limit value is dynamically optimized to prevent soil heat imbalance; The stepwise dynamic adjustment module adjusts the benchmark heating control value by using three-level step speed according to the limit value change trend; the first-level speed is the fastest, which is used for emergency over-limit; the second-level speed is moderate, which is used to deal with potential risks; and the third-level speed is gentle, which is used to maintain long-term stability; The real-time monitoring and feedback module integrates the Internet of Things sensor network to collect environmental data and equipment status.
[0053] The above has introduced the present application in detail, and the principle and implementation mode of the present application have been described by applying specific examples; the above example is only used to help understand the method and core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed; in view of the above, the content of the specification should not be understood as the limitation of the present application.
Claims
1. A solar ground source heat pump coupled heating control method, characterized in that, The method comprises the following steps: S1: obtaining the working mode of the solar ground source heat pump in high-altitude and high-latitude areas, wherein the working mode comprises a normal mode, a transition mode and a polar night mode; determining the reference heating control value of the solar ground source heat pump based on the working mode; S2: calculating the working mode limit value of the solar ground source heat pump based on the reference heating control value, wherein the working mode limit value refers to the bearing limit value of the working mode of the solar ground source heat pump; adjusting the reference heating control value of the solar ground source heat pump based on the working mode limit value; S3: calculating the working mode limit value after the actual operation of the solar ground source heat pump based on the adjusted reference heating control value; S4: determining the coupling heating control method of the solar ground source heat pump based on the working mode limit value after the actual operation.
2. The solar ground-source heat pump coupled heating control method of claim 1, wherein, The working mode of the solar ground source heat pump in high-altitude and high-latitude areas comprises the following steps: if the solar energy is used as the main heating method during the day and the ground source heat pump is used as the main heating method at night during the operation of the solar ground source heat pump, the working mode of the solar ground source heat pump is defined as the normal mode; if the solar energy or the ground source heat pump is used as the main heating method during the day and the ground source heat pump is used as the main heating method at night during the operation of the solar ground source heat pump, the working mode of the solar ground source heat pump is defined as the transition mode; if the ground source heat pump is used as the main heating method during the day or at night during the operation of the solar ground source heat pump, the working mode of the solar ground source heat pump is defined as the polar night mode.
3. The solar ground-source heat pump coupled heating control method of claim 2, wherein, The reference heating control value of the solar ground source heat pump is determined based on the working mode, comprising the following steps: based on the normal mode, an additional heating adjustment value is extracted and defined as a first additional heating adjustment value; based on the transition mode, an additional heating adjustment value is extracted and defined as a second additional heating adjustment value; based on the polar night mode, an additional heating adjustment value is extracted and defined as a third additional heating adjustment value; The additional heating adjustment value refers to the electric energy consumed by driving the ground source heat pump for heating, which is converted into equivalent energy consumption by the electricity price parameter; The reference heating control value of the solar ground source heat pump is calculated by a reference heating control formula based on the first additional heating adjustment value, the second additional heating adjustment value and the third additional heating adjustment value.
4. The solar ground-source heat pump coupled heating control method of claim 3, wherein, The reference heating control value of the solar ground source heat pump is calculated by a reference heating control formula based on the first additional heating adjustment value, the second additional heating adjustment value and the third additional heating adjustment value, comprising the following steps: wherein, is a reference heating control value, is a mode weight coefficient, is the first is a direct solar heating amount in the mode, is the first is a ground source heat pump heating amount in the mode, is the first is an electric energy consumed by the ground source heat pump in the mode, wherein the electric energy consumed by the ground source heat pump in the mode is calculated according to the following formula: wherein, Pground is the ground source heat pump power, Pground is the ground source heat pump power, Cp is the additional electricity consumption cost in the ground source heat pump mode, T is the operation time, Cp is the electricity price.
5. The solar ground-source heat pump coupled heating control method of claim 1, wherein, The working mode limit value of the solar ground source heat pump is calculated based on the reference heating control value, wherein the working mode limit value refers to the bearing limit value of the working mode of the solar ground source heat pump, comprising the following steps: based on the reference heating control value, the real-time soil temperature in each heating process is obtained; based on the real-time soil temperature, the frozen soil safety temperature threshold and the temperature critical change amount are extracted; the bearing limit value of the working mode of the solar ground source heat pump is calculated by a working mode bearing limit value formula; the working mode bearing limit value formula is as follows: wherein, is the maximum power allowed for the heat pump, is the nominal maximum power of the heat pump, is the real-time soil temperature, is the frozen soil safety temperature threshold, is the temperature critical change amount, is the nominal power of the heat pump.
6. The solar ground-source heat pump coupled heating control method of claim 1, wherein, Adjusting a reference heating control value of a solar ground source heat pump based on the working mode limit value, comprising: Extracting the working mode limit value after each change of the reference heating control value based on the working mode limit value calculated by the working mode bearing limit value formula, and defining it as a first working mode limit value; If the first working mode limit value shows an upward trend or stabilizes at the maximum working power of the ground source heat pump, reducing the reference heating control value at a first step speed, otherwise maintaining the reference heating control value; Similarly, extracting the working mode limit value after each change of the reference heating control value, and defining it as a second working mode limit value; If the second working mode limit value first maintains the original working mode limit value, and then shows an upward trend or stabilizes at the maximum working power of the ground source heat pump, reducing the reference heating control value at a second step speed; Similarly, extracting the working mode limit value in the following two cases: the reference heating control value changes and exceeds the maximum allowable power of the ground source heat pump; the reference heating control value does not change but exceeds the maximum allowable power of the ground source heat pump, and defining it as a third working mode limit value; If the third working mode limit value continuously exceeds the maximum allowable power of the ground source heat pump, reducing the reference heating control value at a third step speed.
7. The solar ground-source heat pump coupled heating control method of claim 6, wherein, The first step speed > the second step speed > the third step speed. The working mode limit value after the actual operation of the solar ground source heat pump is calculated based on the adjusted reference heating control value, comprising:
8. The solar ground-source heat pump coupled heating control method of claim 1, wherein, Re-calculating the working mode limit value after the actual operation of the solar ground source heat pump based on the adjusted reference heating control value by using the working mode bearing limit value formula. The solar ground source heat pump coupling heating control method is determined based on the working mode limit value after the actual operation, comprising:
9. The solar ground-source heat pump coupled heating control method of claim 1, wherein, If the working mode limit value after the actual operation is less than the original working mode limit value, extracting the adjusted reference heating control value; Based on the adjusted reference heating control value, extracting the corresponding reference heating control value in the three modes respectively; Taking the corresponding reference heating control value in the three modes as the peak value of the reference heating control value of each working mode. Comprising:
10. A solar ground source heat pump coupled heating control system for implementing the solar ground source heat pump coupled heating control method of any one of claims 1-9, characterized in that, A working mode recognition module that dynamically divides three modes of normal, transition, and polar night by real-time monitoring of solar radiation intensity and duration through a light sensor, combined with historical meteorological data; in normal mode, solar collectors are preferentially used for heating during the day, and switched to ground source heat pumps at night; in transition mode, the two energy sources are used together; in polar night mode, the ground source heat pump is completely relied on, and a backup heat source is started; A reference heating control module that calculates a reference heating control value using a weighted average method based on mode weight coefficients, integrating solar direct heating, heat pump heating, and additional electricity costs; An integrated electricity price parameter is used to convert electricity costs into equivalent energy consumption, ensuring physical consistency in formula calculations; A working mode limit value dynamic calculation module that monitors frozen soil temperature with a ground temperature sensor, combines frozen soil safety thresholds and critical temperature changes, and dynamically calculates the maximum allowable power of the heat pump using the working mode bearing limit value formula to prevent soil thermal imbalance; triggering an early warning when the limit is exceeded; Combined with the frozen soil temperature monitoring data and the normalized energy consumption parameters, the heat pump power limit value is dynamically optimized to prevent soil thermal imbalance; The stepped dynamic adjustment module adjusts the reference heating control value according to the limit value change trend, with three levels of stepped speed adjustment: the first level of speed reduction is the fastest, used for emergency over-limit; the second level of speed reduction is moderate, used to deal with potential risks; The third level of speed reduction is gentle, maintaining long-term stability; The real-time monitoring and feedback module integrates an Internet of Things sensor network to collect environmental data and equipment status.