A method for correcting the operation characteristics of central air-conditioning load resources based on body-sensation temperature

Abstract

The present invention discloses a method for correcting the operation characteristics of central air-conditioning load resources based on body-sensation temperature, belonging to the field of power systems, and solving the problem of insufficient accuracy in the regulation analysis of the operation characteristics of central air-conditioning by existing analysis methods. The method steps are as follows: First, a body-sensation temperature model of central air-conditioning load is constructed. Then, a control operation mode of central air-conditioning based on body-sensation temperature is constructed. Finally, a correction model of the operation characteristics of central air-conditioning load considering passenger flow and outdoor temperature is constructed. The present invention comprehensively considers body-sensation temperature, outdoor temperature, passenger flow, and weather factors to correct the operation characteristics of central air-conditioning, improves the accuracy of the analysis of the operation characteristics of central air-conditioning, further improves the accuracy of the evaluation of the load response ability of central air-conditioning, and then improves the degree of excavation of the response ability of central air-conditioning resources, and finally improves the regulation ability of the new urban power grid.

Description

Technical Field

[0001] The invention belongs to the field of power systems, and particularly relates to a method for correcting the operation characteristics of central air-conditioning load resources based on the perceived temperature. Background Art

[0002] Accurately evaluating the operation characteristics of central air conditioners is of great significance, which helps to optimize energy use under different load conditions, avoid unnecessary energy waste. Based on the operation characteristics, more refined control strategies can be realized to reduce energy consumption. By monitoring and analyzing the operation characteristics, potential faults or abnormal conditions can be detected early, so as to carry out preventive maintenance and reduce the system failure rate. Accurate operation characteristic data can help formulate more effective maintenance plans and extend the service life of equipment. Based on the operation characteristics, the central air conditioner can respond more quickly to changes in the environment and user needs, providing a more stable and comfortable indoor environment. The control system can adjust the temperature, humidity and air flow according to real-time data to ensure user comfort while reducing energy consumption.

[0003] The existing methods for analyzing the operation characteristics of central air conditioners have the following deficiencies: 1) Ignoring the perceived temperature, traditional analysis methods often only focus on the indoor air temperature and ignore the perceived temperature, which leads to the inability to accurately reflect the user's comfort. The perceived temperature is affected by various factors such as humidity, air flow speed, radiation temperature, etc., and it is difficult to comprehensively evaluate the user experience only relying on the air temperature. 2) There is a deviation between the evaluation result and the actual situation. Due to the simplification of the model and algorithm, the analysis result often has a certain deviation from the actual situation; the failure to monitor and adjust in real time leads to a lag in the control strategy and cannot respond to environmental changes in a timely manner. 3) Insufficient consideration of factors such as outdoor temperature, passenger flow, weather, etc. The change of outdoor temperature will affect the load and efficiency of the central air conditioner, but traditional methods may not fully consider this point; the change of passenger flow will affect the indoor heat load, and traditional methods often ignore this important factor, resulting in inaccurate control during peak or off-peak hours; the impact of weather conditions (such as sunny, cloudy, rainy, etc.) on the air-conditioning load has not been fully considered. 4) Lack of detailed modeling. Traditional methods lack detailed modeling of the above factors (outdoor temperature, passenger flow, weather, etc.), resulting in insufficient accuracy of analysis and control. Summary of the Invention

[0004] In view of the above problems, the invention proposes a method for correcting the operation characteristics of central air-conditioning load resources based on the perceived temperature, which solves the problem of insufficient accuracy in the regulation and analysis of the operation characteristics of existing central air-conditioning operation characteristic analysis methods.

[0005] The technical solution adopted by the invention is as follows: A method for correcting the operation characteristics of central air-conditioning load resources based on the perceived temperature, the steps are as follows:

[0006] S1: Construct a central air-conditioning load perceived temperature model and control the central air-conditioning to participate in the response based on this temperature model. Among them, the constructed central air-conditioning load perceived temperature model is shown in formula (1).

[0007]

[0008] In the formula, AT(t) is the perceived temperature at time t; T(t) is the indoor air temperature at time t; Pa(t) is the indoor water vapor pressure at time t; V(t) is the wind speed at time t; Q p is the rated cooling capacity of the chiller; β c is the chilled water temperature parameter; T 1 is the initial indoor temperature at the start of the central air-conditioning cooling period δ c (t)=1; T 0 is the initial indoor temperature at the start of the CAC shutdown period δ c (t)=0; δ c is the central air-conditioning operation state matrix: 1 - operation state, 0 - shutdown state; RH is the relative humidity; a 1 is the internal heat coefficient of the building; a 2 is the top heat coefficient of the building; a 3 (t) is the indoor and outdoor heat load coefficient; a 4 is the chilled water heat coefficient;

[0009] Among them, the commercial building parameters need to satisfy formula (2):

[0010]

[0011] In the formula, a 1 is the internal heat coefficient of the building; a 2 is the top heat coefficient of the building; a 3 (t) is the indoor and outdoor heat load coefficient; a 4 is the chilled water heat coefficient; ρ a is the air density; C a is the specific heat capacity of air; V k is the volume inside the building; K s is the heat storage coefficient of the building inner wall; S w-in is the area of the building inner wall; K top is the heat transfer coefficient of the building roof; K w is the heat transfer coefficient of the building wall; S top is the area of the building roof; S w is the area of the building wall; T out is the outdoor temperature; m w is the mass of chilled water; C w is the specific heat capacity of chilled water; T wc is the chilled water outlet temperature; T wj is the chilled water inlet temperature; QL The indoor cooling load at time t is (t); K e The cooling load of the equipment is K z The lighting cooling load is q e The heat dissipation per unit area of the equipment is q z The heat dissipation per unit area of the lighting is q c The area of the refrigeration zone is S x The apparent cooling load coefficient of the human body is q x The sensible heat dissipation of the human body is q n The latent heat dissipation of the human body is q q The clustering coefficient is Q r The passenger flow load at time t is (t); η p The passenger flow per unit area at time t is η k The threshold value of the passenger flow per unit area is

[0012] S2: Construct a central air-conditioning control operation mode based on the perceived temperature: including three operation modes: on-off control operation mode, perceived temperature control operation mode, and hybrid control operation mode. The on-off control operation mode controls the central air-conditioning according to the switch. The perceived temperature control mode controls the central air-conditioning by adjusting the perceived temperature range. The hybrid control operation mode controls the central air-conditioning by comprehensively adjusting the perceived temperature range and combining the switch;

[0013] S3: Construct a correction model for the load operation characteristics of the central air-conditioning considering the passenger flow and outdoor temperature: In the hybrid control operation mode, comprehensively consider the influence of factors such as outdoor temperature, passenger flow, air humidity, and wind speed, correct the operation characteristics of the central air-conditioning load, give four typical scenarios: sunny weekday scenario, sunny holiday scenario, cloudy weekday scenario, cloudy holiday scenario, and construct a correction model for the operation characteristics of the central air-conditioning under different scenarios to correct the operation cycle and shutdown cycle of the central air-conditioning under different scenarios.

[0014] Furthermore, in step S2, the central air-conditioning operation is periodic. The indoor air temperature is always maintained within the range of [T min , T max . During the summer cooling process, when the air-conditioning is turned off, the indoor air temperature gradually rises from point m to point n. The power of the air-conditioning is 0 during the process from point m to point n, and the shutdown cycle is τ off . When the air-conditioning is turned on, the indoor air temperature drops from point n to point k. The air-conditioning generates operating power from point n to point k, and the operation cycle is τ on . The indoor air temperature range [T min , T max affects the start / stop cycle τ on and τ off, thereby affecting the user's response duration. In the switch control operation mode, the central air conditioner turns on or off after receiving an instruction and always operates within the temperature range of [T min , T max ; in the body-sensation temperature control operation mode, the central air conditioner participates in the response by changing the temperature upper and lower limits to [AT min , AT max . The indoor temperature operating range during the shutdown period of the central air conditioner changes from (m, n) to (g, h), and the shutdown cycle changes from τ off to τ' off . The interval with a power of 0 changes from (m, n) to (g, h); in the hybrid control operation mode, the central air conditioner simultaneously changes the temperature upper and lower limits and the switch state. After the response ends and returns to the comfortable temperature range [T min , T max , the start / stop cycle is still τ on , τ off ; combined with the above-mentioned central air conditioner load body-sensation temperature model, the body-sensation temperature-switch hybrid control operation mode is adopted to participate in the regulation on the premise of ensuring human comfort.

[0015] Further, in step S3, the start / stop operation cycle of the central air conditioner is affected by factors such as outdoor temperature, passenger flow, air humidity, and wind speed. Therefore, four typical central air conditioner operation scenarios are constructed:

[0016] a) Sunny weekday scenario: In this scenario, the outdoor temperature is T out1 , the passenger flow is η p1 , and the start / stop operation cycle of the central air conditioner in this scenario is corrected and

[0017] b) Sunny holiday scenario: In this scenario, the outdoor temperature is T out1 , the passenger flow is η p2 , and the start / stop operation cycle of the central air conditioner in this scenario is corrected and

[0018] c) Cloudy weekday scenario: In this scenario, the outdoor temperature is T out2 , the passenger flow is η p1 , and the start / stop operation cycle of the central air conditioner in this scenario is corrected and

[0019] d) Cloudy holiday scenario: In this scenario, the outdoor temperature is T out2 , the passenger flow is η p2 , and the start / stop operation cycle of the central air conditioner in this scenario is corrected and

[0020] According to the outdoor temperature \(T\) on sunny days out1 and the passenger flow \(\eta\) P1 , a correction model for the operating characteristics of the central air conditioner on sunny weekdays is constructed to correct the operating cycle of the central air conditioner in this scenario Shutdown cycle As shown in formulas (3)-(4):

[0021]

[0022] In formula (3), \(\beta\) is the chilled water temperature parameter;

[0023] Based on the same method above, correction models for the operating characteristics of the central air conditioner on sunny holidays, cloudy weekdays, and cloudy holidays are constructed, and the start / stop operating cycles of the central air conditioner are corrected respectively, and then the central air conditioner is controlled to obtain more accurate operating characteristics of the central air conditioner, and finally more accurate central air conditioner load and its response ability are obtained.

[0024] The advantages and beneficial effects of the present invention are as follows: The present invention comprehensively considers the perceived temperature, outdoor temperature, passenger flow, and weather factors to correct the operating characteristics of the central air conditioner, improves the accuracy of the analysis of the operating characteristics of the central air conditioner, further improves the accuracy of the evaluation of the load response ability of the central air conditioner, and then improves the degree of excavation of the response ability of the central air conditioner resources, and finally improves the regulation ability of the new urban power grid. Brief Description of the Drawings

[0025] Figure 1 is the schematic diagram of the correction method of the present invention;

[0026] Figure 2 is the operating characteristic diagram of the central air conditioner load under different control methods;

[0027] Figure 3 is the influence diagram of the passenger flow on the operating characteristics of the central air conditioner;

[0028] Figure 4 is the influence diagram of the outdoor temperature on the operating characteristics of the central air conditioner. Detailed Embodiments

[0029] The following further illustrates the present invention with examples according to the drawings:

[0030] Example 1

[0031] As Figure 1 shown, a method for correcting the operating characteristics of the central air conditioner load resources based on the perceived temperature is as follows:

[0032] S1: Construct a central air-conditioning load sensible temperature model: The sensible temperature is the body temperature index felt by the human body, which is determined by air temperature, wind speed, and relative humidity. In the actual power grid regulation, the setting of the actual temperature of the central air-conditioning is affected by the sensible temperature. However, most of the existing methods control the air-conditioning based on the air temperature displayed on the panel, ignoring the sensible temperature, resulting in a deviation between the evaluation result and the actual situation. Therefore, in this embodiment, factors such as building parameters, indoor and outdoor temperature differences, air-conditioning cooling load, wind speed, and relative humidity are comprehensively considered to construct a central air-conditioning load sensible temperature model, and the central air-conditioning is controlled to participate in the response based on this temperature. The central air-conditioning system includes a chiller, a chilled water pump, a cooling water pump, a cooling tower, and fan coils. During the central air-conditioning refrigeration period, the chiller cools the chilled water, and the chilled water pump and fan send the cooled cold air into the room to lower the air temperature. During the shutdown period of the central air-conditioning, no chilled water is generated, and the indoor air temperature gradually rises due to factors such as indoor and outdoor temperature differences, indoor heat dissipation equipment, and human body heat dissipation. Among them, the constructed central air-conditioning load sensible temperature model is shown in formula (1).

[0033]

[0034] In the formula, AT(t) is the sensible temperature at time t; T(t) is the indoor air temperature at time t; Pa(t) is the indoor water vapor pressure at time t; V(t) is the wind speed at time t; Q p is the rated cooling capacity of the chiller; β c is the chilled water temperature parameter; T 1 is the initial indoor temperature at the start of the central air-conditioning refrigeration period δ c (t)=1; T 0 is the initial indoor temperature at the start of the CAC shutdown period δ c (t)=0; δ c is the central air-conditioning operation status matrix: 1 - operating status, 0 - shutdown status; RH is the relative humidity; a 1 is the internal heat coefficient of the building; a 2 is the top heat coefficient of the building; a 3 (t) is the indoor and outdoor heat load coefficient; a 4 is the chilled water heat coefficient;

[0035] Among them, the building parameters of commercial buildings need to satisfy formula (2):

[0036]

[0037] In the formula, a 1 is the internal heat coefficient of the building; a 2 is the top heat coefficient of the building; a 3 (t) is the indoor and outdoor heat load coefficient; a 4 is the chilled water heat coefficient; ρ a is the air density; Ca is the specific heat capacity of air; V k is the volume within the building; K s is the heat storage coefficient of the building inner wall; S w-in is the area of the building inner wall; K top is the heat transfer coefficient of the building roof; K w is the heat transfer coefficient of the building wall; S top is the area of the building roof; S w is the area of the building wall; T out is the outdoor temperature; m w is the mass of chilled water; C w is the specific heat capacity of chilled water; T wc is the outlet temperature of chilled water; T wj is the inlet temperature of chilled water; Q L Q(t) is the indoor cooling load at time t; K e is the equipment cooling load; K z is the lighting cooling load; q e is the heat dissipation per unit area of equipment; q z is the heat dissipation per unit area of lighting; S c is the area of the refrigeration zone; K x is the apparent cooling load coefficient of the human body; q x is the sensible heat dissipation of the human body; q n is the latent heat dissipation of the human body; h q is the clustering coefficient; Q r Q(t) is the passenger flow load; η p η(t) is the passenger flow per unit area; η k is the threshold value of the passenger flow per unit area;

[0038] S2: Construct a central air-conditioning control operation mode based on the perceived temperature: including three operation modes: on-off control operation mode, perceived temperature control operation mode, and mixed control operation mode. The on-off control operation mode controls the central air-conditioning according to the switch. The perceived temperature control mode controls the central air-conditioning by adjusting the perceived temperature range. The mixed control operation mode controls the central air-conditioning by comprehensively adjusting the perceived temperature range and combining the switch. Under different operation modes, the central air-conditioning has different operation characteristics and thus different response capabilities. In this embodiment, the central air-conditioning is controlled by adjusting the perceived temperature range and the switch to obtain more accurate operation characteristics. Among them, there are three operation modes of the central air-conditioning under the perceived temperature as Figure 2 shown. The operation of the central air-conditioning is periodic, and the indoor air temperature is always maintained within the range of [T min , T max . During the cooling process in summer, the air-conditioning is turned off, and the indoor air temperature gradually rises from point m to point n. The power of the air-conditioning is 0 during the process from point m to point n, and the shutdown period is τoff When the air conditioner is turned on, the indoor air temperature drops from point n to point k. The air conditioner generates operating power from point n to point k, and the operating cycle is τ. on , as Figure 2 (a) shows. The indoor air temperature range [T min , T max mainly affects the start / stop cycle τ on and τ off , thereby affecting the response duration that users can participate in. In the on / off control mode, the central air conditioner turns on or off after receiving a command, and always operates within the temperature range [T min , T max , as Figure 2 (b) shows. In the body-sensation temperature control mode, the central air conditioner participates in the response by changing the temperature upper and lower limits to [AT min , AT max . The indoor temperature operating range during the shutdown period of the central air conditioner changes from (m, n) to (g, h), and the shutdown cycle changes from τ off to τ' off . The interval with a power of 0 changes from (m, n) to (g, h), as Figure 2 (c) shows. In the hybrid control operation mode, the central air conditioner simultaneously changes the temperature upper and lower limits and the on / off state. After the response ends and returns to the comfortable temperature zone [T min , T max , the start / stop cycle is still τ on and τ off , as Figure 2 (d) shows. Compared with on / off control and body-sensation temperature control, hybrid control is more flexible. On / off control generally directly shuts down the central air conditioner system, the chilled water pump and the cooling water pump stop working, and the chilled water and the cooling water no longer circulate, which may cause the chilled water in the evaporator to cool down rapidly or even freeze; furthermore, the cooling water in the condenser heats up rapidly, having an adverse effect on the main unit. The load of the chiller in the central air conditioner system accounts for 70% of the total load. In this embodiment, combined with the body-sensation temperature model of the central air conditioner load, a body-sensation temperature-on / off hybrid control operation mode is adopted to participate in the regulation on the premise of ensuring human comfort.

[0039] S3: Considering the operating characteristics correction model of the central air conditioner load with passenger flow and outdoor temperature, in the hybrid control operation mode, this embodiment comprehensively considers the influence of factors such as outdoor temperature, passenger flow, and weather conditions (air humidity, wind speed), and corrects the operating characteristics of the central air conditioner load, that is, corrects the start / stop operating cycle τ on and τ off . These two can directly reflect the operating characteristics of the central air conditioner, thereby affecting the adjustment ability.

[0040] ① Influence of passenger flow on the operating characteristics of central air-conditioning: Traditional research has rarely considered the influence of passenger flow on the parameter adjustment ability of central air-conditioning. In commercial buildings, the passenger flow varies greatly, which has a significant impact on the parameter adjustment ability of central air-conditioning. The influence mechanism of passenger flow on the parameter adjustment ability of central air-conditioning is as Figure 3 shown: The passenger flow mainly affects the start / stop operation cycle τ L of central air-conditioning by influencing the indoor cooling load Q on and τ off , thereby affecting its parameter adjustment ability. Figure 2 When the passenger flow η p1 <η p2 , η p2 corresponds to a larger indoor cooling load. When the temperature is reduced by the same amplitude, a longer refrigeration cycle is required. From τ on it increases to τ on1 ; when the temperature is increased by the same amplitude, the stop operation cycle becomes shorter, from τ off it decreases to τ off1 , and thus the parameter adjustment duration of the central air-conditioning becomes shorter.

[0041] ② Influence of outdoor temperature on the operating characteristics of central air-conditioning: Different outdoor temperatures have different effects on the adjustment response characteristics of central air-conditioning. Figure 4 The influence mechanism of outdoor temperature on the parameter adjustment ability is given. Different outdoor temperatures result in different cooling capacities required to lower the indoor temperature to the same level, and the indoor temperature also rises at different rates. As Figure 4 shown, when the outdoor temperature T out1 <T out2 , the refrigeration cycle τ on <τ on2 , and the shutdown cycle τ off >τ off2 .

[0042] Under different weather conditions, such as sunny and rainy days with different outdoor temperatures, the air-conditioning response characteristics are different, resulting in different parameter adjustment abilities of central air-conditioning. Therefore, four typical central air-conditioning operation scenarios are constructed:

[0043] a) Sunny weekday scenario: In this scenario, the outdoor temperature is T out1 , the passenger flow is η p1 , and the start / stop operation cycle and

[0044] b) Sunny holiday scenario: In this scenario, the outdoor temperature is T out1 , the passenger flow is η p2 , and the start / stop operation cycle and

[0045] c), Cloudy weekday scenario: The outdoor temperature in this scenario is T out2 , and the passenger flow is η p1 , modify the start / stop operation cycle of the central air conditioner in this scenario and

[0046] d), Cloudy holiday scenario: The outdoor temperature in this scenario is T out2 , and the passenger flow is η p2 , modify the start / stop operation cycle of the central air conditioner in this scenario and

[0047] The modified start / stop cycle of the central air conditioner is shown in Table 1.

[0048] Table 1 Modification of the operation cycle of the central air conditioner in the first four typical scenarios

[0049]

[0050] Take the sunny weekday scenario as an example. According to the sunny outdoor temperature T out1 , the weekday passenger flow η P1 , construct a correction model for the operation characteristics of the central air conditioner, and modify the operation cycle of the central air conditioner in this scenario Shutdown cycle Obtain more accurate operation characteristics of the central air conditioner, as shown in formulas (3)-(4):

[0051]

[0052] In formula (3), β is the chilled water temperature parameter;

[0053] Based on the same method above, construct correction models for the operation characteristics of the central air conditioner in sunny holiday scenarios, cloudy weekday scenarios, and cloudy holiday scenarios, respectively modify the start / stop operation cycles of the central air conditioner, and then control the central air conditioner to obtain more accurate operation characteristics of the central air conditioner, and finally obtain more accurate central air conditioner loads and their response capabilities.

Claims

1. A method for correcting the operating characteristics of central air-conditioning load resources based on body temperature, characterized in that: Here are the steps: S1: Construct a central air conditioning load perceived temperature model, and control the central air conditioning to participate in the response based on the temperature model; wherein the constructed central air conditioning load perceived temperature model is as shown in formula (1), Where AT(t) is the perceived temperature at time t; T(t) is the indoor temperature at time t; Pa(t) is the indoor water vapor pressure at time t; V(t) is the wind speed at time t; Q p is the rated cooling capacity of the chiller; β c is the chilled water temperature parameter; T1 is the central air conditioning cooling period δ c (t) = 1 initial indoor temperature at the beginning; T0 is the CAC shutdown period δ c (t) = 0 initial indoor temperature at the beginning; δ c is the central air-conditioning operation state matrix: 1-operation state, 0-stop state; RH is relative humidity; a1 is the heat coefficient inside the building; a2 is the heat coefficient on the top of the building; a3(t) is the indoor and outdoor heat load coefficient; a4 is the chilled water heat coefficient; Among them, the parameters of commercial buildings must satisfy formula (2): Where a1 is the heat coefficient inside the building; a2 is the heat coefficient of the building roof; a3(t) is the indoor and outdoor heat load coefficient; a4 is the chilled water heat coefficient; ρ a is the air density; C a is the specific heat capacity of air; V k is the volume inside the building; K s is the heat storage coefficient of the building inner wall; S w-in is the area of ​​the interior wall of the building; K top is the thermal conductivity of the building roof; K w is the thermal conductivity of the building wall; S top is the roof area of ​​the building; S w is the building wall area; T out is the outdoor temperature; m w is the quality of chilled water; C w is the specific heat capacity of chilled water; T wc T is the chilled water outlet temperature; wj is the chilled water inlet temperature; Q L (t) is the indoor cooling load at time t; K e is the equipment cooling load; K z is the lighting cooling load; q e is the heat dissipation per unit area of ​​the equipment; q z S is the heat dissipation per unit area of ​​lighting; c is the cooling area; K x is the apparent cooling load coefficient of the human body; q x q is the sensible heat dissipation of the human body; n is the latent heat dissipation of the human body; h q is the clustering coefficient; Q r (t) is the passenger flow load; η p (t) is the passenger flow per unit area; η k is the passenger flow threshold per unit area; S2: Constructing a central air-conditioning control operation mode based on body-felt temperature: including three operation modes: switch control operation mode, body-felt temperature control operation mode, and mixed control operation mode. The switch control operation mode controls the central air-conditioning according to the switch, the body-felt temperature control mode controls the central air-conditioning by adjusting the body-felt temperature range, and the mixed control operation mode controls the central air-conditioning by comprehensively adjusting the body-felt temperature range and combining the switch; S3: Construct a correction model for the operating characteristics of the central air-conditioning load considering passenger flow and outdoor temperature: Under the hybrid control operation mode, the operating characteristics of the central air-conditioning load are corrected by comprehensively considering the influence of factors such as outdoor temperature, passenger flow, air humidity, and wind speed. Four typical scenarios are given: sunny weekday scenario, sunny holiday scenario, cloudy weekday scenario, and cloudy holiday scenario. A correction model for the operating characteristics of the central air-conditioning under different scenarios is constructed, and the operating cycle and shutdown cycle of the central air-conditioning under different scenarios are corrected.

2. A method for correcting the operating characteristics of central air-conditioning load resources based on body-perceived temperature according to claim 1, characterized in that: In step S2, the central air conditioner operates periodically to keep the indoor air temperature at [T min ,T max ], in the summer cooling process, the air conditioner is turned off, and the indoor air temperature gradually rises from point m to point n. The power of the air conditioner during the process from point m to point n is 0, and the shutdown period is τ off , the air conditioner is turned on, the indoor air temperature drops from point n to point k, the air conditioner generates operating power from point n to point k, and the operating cycle is τ on , indoor air temperature range [T min ,T max ]Affects the air conditioning start / stop cycleτ on , τ off , thus affecting the user's response time. In the switch control operation mode, the central air conditioner turns on or off the air conditioner after receiving the command, always in [T min ,T max ] temperature range; in the body temperature control operation mode, the central air conditioner changes the upper and lower limits of the temperature to [AT min ,AT max ] to participate in the response, the indoor temperature operation range during the central air-conditioning shutdown period changes from (m, n) to (g, h), and the shutdown period changes from τ off becomes τ' off , the interval with power 0 changes from (m, n) to (g, h); in the mixed control operation mode, the central air conditioner changes the upper and lower limits of temperature and the switch state at the same time, and the response ends and returns to the comfortable temperature zone [T min ,T max ], the start / stop cycle is still τ on , τ off ; Combined with the central air-conditioning load perceived temperature model, the perceived temperature-switch hybrid control operation mode is adopted to participate in the regulation under the premise of ensuring human comfort.

3. A method for correcting the operating characteristics of central air-conditioning load resources based on body-perceived temperature according to claim 2, characterized in that: In step S3, the start / stop operation cycle of the central air conditioner is affected by factors such as outdoor temperature, passenger flow, air humidity, and wind speed. Therefore, four typical central air conditioner operation scenarios are constructed: a) Sunny working day scenario: In this scenario, the outdoor temperature is T out1 , the passenger flow is η p1 , correct the central air conditioning start / stop operation cycle in this scenario and b) Sunny holiday scene: In this scene, the outdoor temperature is T out1 , the passenger flow is η p2 , correct the central air conditioning start / stop operation cycle in this scenario and c) Cloudy weekday scenario: In this scenario, the outdoor temperature is T out2 , the passenger flow is η p1 , correct the central air conditioning start / stop operation cycle in this scenario and d) Cloudy holiday scene: In this scene, the outdoor temperature is T out2 , the passenger flow is η p2 , correct the central air conditioning start / stop operation cycle in this scenario and According to the sunny outdoor temperature T out1 , passenger flow η P1 , build the operating characteristic correction model of the central air conditioning on sunny weekdays, and correct the operating cycle of the central air conditioning in this scenario Outage period As shown in formula (3)-(4): In formula (3), β is the chilled water temperature parameter; Based on the same method above, the operation characteristic correction models of the central air-conditioning for sunny holiday scenarios, cloudy weekday scenarios, and cloudy holiday scenarios are constructed, and the start / stop operation cycle of the central air-conditioning is corrected respectively, and then the central air-conditioning is controlled to obtain more accurate central air-conditioning operation characteristics, and finally obtain more accurate central air-conditioning load and its response capability.

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