Total loss optimization method for combined type ground source heat pump system and electronic equipment

Abstract

The invention discloses a total # imgabs0 # loss optimization method of a combined type ground source heat pump system and electronic equipment. The method comprises the steps of calculating first # imgabs1 # loss of a cooling tower subsystem of the combined type ground source heat pump system, calculating second # imgabs2 # loss of a water chilling unit subsystem of the combined type ground source heat pump system, calculating third # imgabs3 # loss of a buried pipe system of the combined type ground source heat pump system, calculating fourth # imgabs4 # loss of a ground source heat pump subsystem of the combined type ground source heat pump system, and calculating third # imgabs3 # loss of a buried pipe system of the combined type ground source heat pump system. The fifth imgabs5 # loss of a gas-fired boiler subsystem of the combined type ground source heat pump system is calculated; and according to the first # imgabs6 # loss, the second # imgabs7 # loss, the third # imgabs8 # loss, the fourth # imgabs9 # loss and the fifth # imgabs10 # loss, # imgabs11 # system optimization analysis is carried out, and the optimized unit part load rates of the multiple unit parts of the combined type ground source heat pump system are obtained. According to the # imgabs12 # loss optimal solution calculation method of the combined type ground source heat pump system, all unit parts can work at the optimal load rate, and the efficiency of the combined type ground source heat pump system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to ground source heat pump systems, and in particular to a composite ground source heat pump system. Loss optimization method, electronic device, storage medium and computer program product. Background Art

[0002] The composite ground source heat pump system includes chillers, gas boilers and other units. For the ground source heat pump system, the units need to operate at the optimal load rate to improve efficiency.

[0003] Existing technology through The optimal loss solution analysis determines the optimal load factor of the unit. The definition of heat is: when the system changes reversibly from any state to a state in equilibrium with the given environment without any other heat source except the environment, the part of energy that can be converted into useful work to the maximum extent is called .

[0004] However, existing technologies only target a single system. The optimal solution analysis of losses is lacking in the composite ground source heat pump system based on chillers and gas boilers. The loss optimal solution calculation method cannot optimize the composite ground source heat pump system. Summary of the invention

[0005] Based on this, it is necessary to provide a composite ground source heat pump system to solve the technical problem that the existing technology lacks optimization of the composite ground source heat pump system. Loss optimization method, electronic device, storage medium and computer program product.

[0006] The present invention provides a composite ground source heat pump system. The composite ground source heat pump system comprises: a cooling tower subsystem, a chiller subsystem, a buried pipe subsystem, a ground source heat pump subsystem, a gas boiler subsystem and a terminal subsystem, wherein the cooling tower subsystem is connected to the chiller subsystem, the buried pipe subsystem is connected to the ground source heat pump subsystem, the chiller subsystem, the ground source heat pump subsystem and the gas boiler subsystem are collectively connected, and the method comprises:

[0007] Calculate the first step of the cooling tower subsystem of the combined ground source heat pump system The second Loss, calculation of the third The fourth Loss calculation of the gas boiler subsystem of the composite ground source heat pump system damage;

[0008] According to the first Loss, the second Loss, the third Loss, the fourth Loss and the fifth Loss, conduct The system is optimized and analyzed to obtain the optimized unit partial load rates of the multiple unit parts of the composite ground source heat pump system.

[0009] Furthermore, the first step of calculating the cooling tower subsystem of the composite ground source heat pump system Loss, including:

[0010] Calculate the first step of the cooling tower subsystem of the combined ground source heat pump system The loss is:

[0011]

[0012] Among them, F I For cooling tower subsystem Fuel, I I The first cooling tower subsystem Loss, W ct is the energy consumption of cooling tower equipment, E cd，in，i is the cooling water inlet of the i-th cooling tower , E cd，out，i is the cooling water outlet of the i-th cooling tower , T0 is the ambient temperature, t cd，ave The average temperature of cooling water in the cooling tower.

[0013] Furthermore, the second Loss, including:

[0014] Calculate the second The loss is:

[0015] in:

[0016] I II The second Loss, I II，1 Produced by the refrigeration cycle Loss, I II，2 It is generated during the heat exchange between refrigerant and chilled water or cooling water. Loss, t cd，aveis the average temperature of cooling water in the chiller, T0 is the ambient temperature, W ch is the energy consumption of the chiller, W cdp is the energy consumption of cooling water pump equipment, W chp is the energy consumption of the chilled water pump, t ch，ave is the average temperature of chilled water in the chiller, t cd，ave is the average temperature of cooling water in the chiller, Q eva Exchange heat for the evaporator.

[0017] Furthermore, the third method of calculating the buried pipe subsystem of the composite ground source heat pump system Loss, including:

[0018] Calculate the buried pipe system of the combined ground source heat pump system in the third quarter of summer The loss is:

[0019] Among them, I III，s For the underground pipe system in the third summer Loss, E gs，in The heat of the working fluid at the inlet of the buried pipe system , E gs，out Heat of the working fluid at the outlet of the buried pipe system , E gs，a Heat exchanged between the buried pipe and the soil , m gs，w is the mass flow rate of water in the underground pipe system, e gs，in is the unit mass heat of the working fluid at the inlet of the buried pipe system , e gs，out The unit mass heat of the working fluid at the outlet of the buried pipe system , Q gs，a is the heat release rate of the buried pipe to the soil, T soil is the soil temperature, T0 is the atmospheric temperature;

[0020] Calculate the buried pipe system of the combined ground source heat pump system in the third winter of winter The loss is:

[0021] Among them, I III，w For the buried pipe system in the third winter damage.

[0022] Furthermore, the fourth Loss, including:

[0023] Calculate the fourth The loss is:

[0024] Among them, I IV The fourth subsystem of the ground source heat pump Loss, I IV，1 Produced during the refrigerant cycle Loss, I IV，2 It is generated during the heat exchange between refrigerant and chilled water or cooling water. loss, T0 is the ambient temperature, t gs，ave is the average temperature of the buried pipe system, is the energy consumption of the ground source heat pump unit, W gsp is the energy consumption of the underground water pump, W hpp is the energy consumption of the user's water pump, t hp，ave is the average temperature of the ground source heat pump, Q eva Exchange heat for the evaporator.

[0025] Furthermore, the fifth step of calculating the gas boiler subsystem of the composite ground source heat pump system Loss, including:

[0026] Calculate the fifth The loss is:

[0027] I v =P g -P g

[0028] F g =q g L g

[0029] P g =m g (e g，out -e g，in ), where I V The fifth subsystem of the gas boiler Loss, F g is the energy generated by natural gas, q g is the calorific value of natural gas, L g is the volume flow rate, m g is the mass flow rate of water in the boiler system, e g，out is the unit mass heat of the outlet water in the boiler system e g，in is the unit mass heat of the inlet water in the boiler system

[0030] Furthermore, according to the first Loss, the second Loss, the third Loss, the fourth Loss and the fifth Loss, conduct The system optimization analysis obtains the optimized unit partial load rate of multiple unit parts of the composite ground source heat pump system, including:

[0031] Set the objective function as:

[0032] I summer =I I +I II +I III，s +I IV

[0033] I winter =I III，w +I IV +I V

[0034] minl summer =f(PLR1, PLR2, PLR3, PLR4)

[0035] I winter =f(PLR1, PLR2, PLR5, PLR6)

[0036] The constraints are:

[0037] 0≤PLR i ≤1

[0038]

[0039] i=1,2,...,n

[0040] Among them, I summer For summer Loss, I winter For winter Loss, I I The first cooling tower subsystem Loss, I II The second Loss, I III，s For the underground pipe system in the third summer Loss, I III，w For the buried pipe system in the third winter Loss, I IV The fourth subsystem of the ground source heat pump Loss, I V The fifth subsystem of the gas boiler loss, PLR1 is the load rate of the first geothermal heat pump unit, PLR2 is the load rate of the second geothermal heat pump unit, PLR3 is the load rate of the first chiller unit, PLR4 is the load rate of the second chiller unit, PLR5 is the load rate of the first gas boiler, PLR6 is the load rate of the second gas boiler, Q is the load value, Q i，max is the maximum cooling capacity of the i-th unit, which includes ground source heat pump unit, chiller unit and gas boiler;

[0041] Summer Minimum loss and total winter The optimization is carried out with the goal of minimizing the loss, and the load rate of the first geothermal heat pump unit, the load rate of the second geothermal heat pump unit, the load rate of the first chiller unit, the load rate of the second chiller unit, the load rate of the first gas boiler and the load rate of the second gas boiler are obtained.

[0042] The present invention provides an electronic device, comprising:

[0043] at least one processor; and,

[0044] a memory communicatively connected to at least one of the processors; wherein,

[0045] The memory stores instructions that can be executed by at least one of the processors, and the instructions are executed by at least one of the processors to enable at least one of the processors to execute the above-mentioned combined ground source heat pump system. Loss optimization method.

[0046] The present invention provides a storage medium, wherein the storage medium stores computer instructions, and when a computer executes the computer instructions, it is used to execute the above-mentioned composite ground source heat pump system. All steps of the loss optimization method.

[0047] The present invention provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the above-mentioned composite ground source heat pump system. Loss optimization method.

[0048] The present invention calculates the heat transfer coefficients of multiple subsystems in the composite ground source heat pump system respectively. loss, and then according to multiple Loss System optimization analysis is performed to obtain the optimized unit partial load rate of multiple units of the composite ground source heat pump system, so as to realize the composite ground source heat pump system. The loss optimal solution calculation method enables each unit to operate at the optimal load rate, thereby improving the efficiency of the composite ground source heat pump system. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A composite ground source heat pump system according to an embodiment of the present invention is provided. Workflow diagram of the loss optimization method;

[0050] Figure 2 Another embodiment of the present invention is a composite ground source heat pump system. Workflow diagram of the loss optimization method;

[0051] Figure 3 An analytical model diagram of a composite ground source heat pump system according to a preferred embodiment of the present invention;

[0052] Figure 4 A model interface optimized by a genetic algorithm for the best embodiment of the present invention;

[0053] Figure 5 Assignment diagram for the strategy of running the genetic algorithm on a typical day;

[0054] Figure 6 A composite ground source heat pump system is a preferred embodiment of the present invention. Workflow diagram of the loss optimization method;

[0055] Figure 7 The figure is a schematic diagram of the hardware structure of an electronic device of the present invention. DETAILED DESCRIPTION

[0056] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. The same components are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0057] The present invention aims to solve the problem of how to solve the system in the operation stage of the composite ground source heat pump system. The optimal operating condition problem of loss is solved, so as to analyze the operation strategy of the main equipment units of the system, improve the system operation efficiency and achieve energy saving effect.

[0058] By using MATLAB to build a mathematical model and using multi-objective optimization methods, we can solve The optimal solution for the loss system. The genetic algorithm is the preferred method for multi-objective optimization. According to the first law of thermodynamics and the law of conservation of energy, heat can be transferred from one object to another, and can also be converted into mechanical energy or other energy, but during the conversion process, the total value of energy remains unchanged. The second law of thermodynamics states that it is impossible to transfer heat from a low-temperature object to a high-temperature object without causing other changes, which characterizes the irreversibility and directionality of energy in the transfer process. Combining the first and second laws of thermodynamics, energy has the conservation of quantity and the difference in quality when converted. Energy has inequality, that is, the "quality" of energy. Therefore, the "value" of energy should be correctly evaluated from the combination of quantity and quality. For this purpose, a parameter is introduced to evaluate the relationship between the "quality" and "quantity" of energy, namely .

[0059] It is defined as: when there is no other heat source except the environment, when the system changes reversibly from any state to a state in equilibrium with the given environment, the part of energy that can be converted into useful work to the maximum extent is called .

[0060] like Figure 1 The figure shows a composite ground source heat pump system according to an embodiment of the present invention. The work flow chart of the loss optimization method is as follows, the composite ground source heat pump system comprises: a cooling tower subsystem, a chiller subsystem, a buried pipe subsystem, a ground source heat pump subsystem and a gas boiler subsystem, the cooling tower subsystem is connected to the chiller subsystem, the buried pipe subsystem is connected to the ground source heat pump subsystem, the chiller subsystem, the ground source heat pump subsystem and the gas boiler subsystem are collectively connected, and the method comprises:

[0061] Step S101, calculating the first The second Loss, calculation of the third The fourth Loss calculation of the gas boiler subsystem of the composite ground source heat pump system damage;

[0062] Step S102: according to the first Loss, the second Loss, the third Loss, the fourth Loss and the fifth Loss, conduct The system is optimized and analyzed to obtain the optimized unit partial load rates of the multiple unit parts of the composite ground source heat pump system.

[0063] Specifically, the present invention can be applied to electronic devices with processing capabilities, such as computers.

[0064] like Figure 3 The following is an analysis model diagram of a composite ground source heat pump system according to the best embodiment of the present invention. During the analysis, the fuel-product concept is used to describe the performance of each device in the system. The flow situation is obtained by combination and decomposition Fuel and The analysis model diagram of fuel products is used to represent the physical process transformation of the actual system. The composite ground source heat pump system is divided into five subsystems, and each subsystem is calculated and solved separately.

[0065] The five subsystems include: a cooling tower subsystem 11, a chiller subsystem 12, a buried pipe subsystem 13, a ground source heat pump subsystem 14, and a gas boiler subsystem 15. The cooling tower subsystem 11 is connected to the chiller subsystem 12, the buried pipe subsystem 13 is connected to the ground source heat pump subsystem 14, and the chiller subsystem 12, the ground source heat pump subsystem 14, and the gas boiler subsystem 15 are connected together and then connected to the terminal subsystem 16.

[0066] Figure 3 The analysis model diagram of the composite ground source heat pump system in the diagram involves multiple symbols, among which rectangles represent equipment components, diamonds represent collection components, and circles represent branch components. The meanings of each symbol are shown in the following table.

[0067]

[0068] Specifically, firstly, step S101 is executed to calculate the first The second Loss, calculation of the third The fourth Loss calculation of the gas boiler subsystem of the composite ground source heat pump system damage.

[0069] Specifically, build each subsystem Balance the equations and then calculate the damage.

[0070] Then, step S102 is performed, according to the first Loss, the second Loss, the third Loss, the fourth Loss and the fifth Loss, conduct The system is optimized and analyzed to obtain the optimized unit partial load rates of the multiple unit parts of the composite ground source heat pump system.

[0071] Specifically, we can use the Matlab optimization algorithm toolbox to select the multi-objective optimization of the genetic algorithm and The balanced equation is programmed to solve the optimized unit partial load rate of multiple units of the composite ground source heat pump system. The unit part of the composite ground source heat pump system includes ground source heat pump unit, chiller and gas boiler.

[0072] The present invention calculates the heat transfer coefficients of multiple subsystems in the composite ground source heat pump system respectively. loss, and then according to multiple Loss System optimization analysis is performed to obtain the optimized unit partial load rate of multiple units of the composite ground source heat pump system, so as to realize the composite ground source heat pump system. The loss optimal solution calculation method enables each unit to operate at the optimal load rate, thereby improving the efficiency of the composite ground source heat pump system.

[0073] like Figure 2 The figure shows a composite ground source heat pump system in another embodiment of the present invention. The work flow chart of the loss optimization method is as follows, the composite ground source heat pump system includes: a cooling tower subsystem, a chiller subsystem, a buried pipe subsystem, a ground source heat pump subsystem, a gas boiler subsystem and a terminal subsystem, the cooling tower subsystem is connected to the chiller subsystem, the buried pipe subsystem is connected to the ground source heat pump subsystem, the chiller subsystem, the ground source heat pump subsystem and the gas boiler subsystem are collectively connected, and the method includes:

[0074] Step S201, calculating the first The loss is:

[0075]

[0076] Among them, F I For cooling tower subsystem Fuel, I I The first cooling tower subsystem Loss, W ct is the energy consumption of cooling tower equipment, Ecd，in，i is the cooling water inlet of the i-th cooling tower , E cd，out，i is the cooling water outlet of the i-th cooling tower , T0 is the ambient temperature, t cd，ave The average temperature of cooling water in the cooling tower.

[0077] Step S202, calculating the second The loss is:

[0078] in:

[0079] I II The second Loss, I II，1 Produced by the refrigeration cycle Loss, I II，2 It is generated during the heat exchange between refrigerant and chilled water or cooling water. Loss, t cd，ave is the average temperature of cooling water in the chiller, T0 is the ambient temperature, W ch is the energy consumption of the chiller, W cdp is the energy consumption of cooling water pump equipment, W chp is the energy consumption of the chilled water pump, t ch，ave is the average temperature of chilled water in the chiller, t cd，ave is the average temperature of cooling water in the chiller, Q eva Exchange heat for the evaporator.

[0080] Step S203, calculate the third day of summer in the underground pipe system of the composite ground source heat pump system. The loss is:

[0081] Among them, I III，s For the buried pipe system in the third day of summer Loss, E gs，in The heat of the working fluid at the inlet of the buried pipe system , E gs，out Heat of the working fluid at the outlet of the buried pipe system , E gs，a Heat exchanged between the buried pipe and the soil , m gs，w is the mass flow rate of water in the underground pipe system, e gs，in is the unit mass heat of the working fluid at the inlet of the buried pipe system , e gs，out The unit mass heat of the working fluid at the outlet of the buried pipe system , Q gs，ais the heat release rate of the buried pipe to the soil, T soil is the soil temperature, T0 is the atmospheric temperature;

[0082] Calculate the buried pipe system of the combined ground source heat pump system in the third winter of winter The loss is:

[0083] Among them, I III，w For the buried pipe system in the third winter of winter damage.

[0084] Step S204, calculating the fourth The loss is:

[0085] Among them, I IV The fourth subsystem of the ground source heat pump Loss, I IV，1 Produced during the refrigerant cycle Loss, I IV，2 It is generated during the heat exchange between refrigerant and chilled water or cooling water. loss, T0 is the ambient temperature, t gs，ave is the average temperature of the buried pipe system, W hp is the energy consumption of the ground source heat pump unit, W gsp is the energy consumption of the underground water pump, W hpp is the energy consumption of the user's water pump, t hp，ave is the average temperature of the ground source heat pump, Q eva Exchange heat for the evaporator.

[0086] Step S205, calculating the fifth The loss is:

[0087] I v =P g -P g

[0088] F g =q g L g

[0089] P g =m g (e g，out -e g，in ), where I V The fifth subsystem of the gas boiler Loss, F g is the energy generated by natural gas, q gis the calorific value of natural gas, L g is the volume flow rate, m g is the mass flow rate of water in the boiler system, e g，out is the unit mass heat of the outlet water in the boiler system , e g，in is the unit mass heat of the inlet water in the boiler system .

[0090] Step S206, setting the objective function to:

[0091] I summer =I I +I II +I III，s +I IV

[0092] I winter =I III，w +I IV +I V

[0093] I summer =f(PLR1, PLR2, PLR3, PLR4)

[0094] I winter =f(PLR1, PLR2, PLR5, PLR6)

[0095] The constraints are:

[0096] 0≤PLR i ≤1

[0097]

[0098] i=1,2,...,n

[0099] Among them, I summer For summer Loss, I winter For winter Loss, I I The first cooling tower subsystem Loss, I II The second Loss, I III，s For the underground pipe system in the third summer Loss, I III，w For the buried pipe system in the third winter Loss, I IV The fourth subsystem of the ground source heat pump Loss, I V The fifth subsystem of the gas boiler loss, PLR1 is the load rate of the first geothermal heat pump unit, PLR2 is the load rate of the second geothermal heat pump unit, PLR3 is the load rate of the first chiller unit, PLR4 is the load rate of the second chiller unit, PLR5 is the load rate of the first gas boiler, PLR6 is the load rate of the second gas boiler, Q is the load value, Q i.max is the maximum cooling capacity of the i-th unit, which includes a ground source heat pump unit, a chiller, and a gas boiler.

[0100] Step S207, respectively, based on the total summer Minimum loss and total winter The optimization is carried out with the goal of minimizing the loss, and the load rate of the first geothermal heat pump unit, the load rate of the second geothermal heat pump unit, the load rate of the first chiller unit, the load rate of the second chiller unit, the load rate of the first gas boiler and the load rate of the second gas boiler are obtained.

[0101] Specifically, this embodiment is a composite ground source heat pump system. The calculation method for the optimal solution to losses is a data optimization calculation method, which can be used to make an analogy for this type of energy system. It can find the optimal solution for the system operation strategy based on computational simulation and improve the overall operation efficiency of the system.

[0102] This embodiment is divided into establishing Balance the equations, System optimization analysis. In addition, you can also analyze the optimization results and ultimately get an evaluation of the operation strategy.

[0103] First, execute step S201 to calculate the first The loss is:

[0104]

[0105] Among them, F I For cooling tower subsystem Fuel, I I The first cooling tower subsystem Loss, W ct is the energy consumption of cooling tower equipment, E cd，in，i is the cooling water inlet of the i-th cooling tower , E cd，out，i is the cooling water outlet of the i-th cooling tower , T0 is the ambient temperature, t cd，ave The average temperature of cooling water in the cooling tower.

[0106] Specifically, construct the cooling tower subsystem Analytical model.

[0107] Cooling tower subsystem The fuel balance equation is shown in Equation 1-1. Flow balance, Fuel and Product difference solution Loss I I , as shown in Equation 1-2.

[0108]

[0109] F I -——Cooling tower subsystem Fuel, kW;

[0110] I I ——Cooling tower subsystem Loss, kW;

[0111] W ct ——Total energy consumption of cooling tower equipment, kW;

[0112] W cti ——is the total energy consumption of the i-th cooling tower equipment, kW;

[0113] E cd，in，i ——Inlet cooling water for the i-th cooling tower , kW;

[0114] E cd，out，i ——Cooling water at the outlet of the i-th cooling tower , kW;

[0115] T0——ambient temperature, K;

[0116] t cd，ave ——Average temperature of cooling water in cooling tower, ℃.

[0117] Where Q ct The heat exchange capacity of the cooling tower is calculated according to the empirical model equations 1-3 of the cooling tower and the fitting coefficients a1 to a3 are obtained by fitting the experimental data in advance.

[0118]

[0119] Q ct ——Heat transfer capacity of cooling tower, kW;

[0120] M w ——Cooling tower fan water volume, kg / s;

[0121] M a ——Cooling tower fan air volume, kg / s;

[0122] t cd，in ——Cooling tower water inlet temperature, °C;

[0123] t cd，out ——Cooling tower water outlet temperature, °C;

[0124] t wb ——Outdoor air wet bulb temperature, °C;

[0125] a1~a3——fitting coefficients.

[0126] In the equation, t cd，ave is the average temperature of the cooling tower inlet and outlet water:

[0127]

[0128] The relationship between the energy consumption of the cooling tower and the air volume of the cooling tower fan can be expressed by the empirical formula:

[0129]

[0130] b0~b3——regression coefficients, which can be obtained in advance through regression analysis of experimental data.

[0131] Then, step S202 is executed to calculate the second The loss is:

[0132] in:

[0133] I II The second Loss, I II，1 Produced by the refrigeration cycle Loss, I II，2 It is generated during the heat exchange between refrigerant and chilled water or cooling water. Loss, t cd，ave is the average temperature of cooling water in the chiller, T0 is the ambient temperature, W ch is the energy consumption of the chiller, W cdp is the energy consumption of cooling water pump equipment, W chp is the energy consumption of the chilled water pump, t ch，ave is the average temperature of chilled water in the chiller, t cd，ave is the average temperature of cooling water in the chiller, Q eva Exchange heat for the evaporator.

[0134] Specifically, construct the chiller subsystem Analytical Model. Chiller Subsystem Losses include: Loss, generated during the heat exchange between refrigerant and chilled water and cooling water The loss generated during the refrigerant circulation process damage:

[0135]

[0136] I II，1 ——Produced during the refrigeration cycle Loss, kW;

[0137] W ch ——Energy consumption of chiller, kW;

[0138] Q eva ——Evaporator heat exchange capacity, kW;

[0139] Q con ——Heat exchange capacity of condenser, kW;

[0140] t eva ——Evaporator temperature, °C;

[0141] t con ——Condenser temperature, °C;

[0142] T0——ambient temperature, K.

[0143] The other part is generated during the heat exchange between the refrigerant and the chilled water and cooling water. Loss calculation formula, see formula 1-7 for details:

[0144]

[0145] I II，2 ——Generated during heat exchange between refrigerant and chilled water or cooling water Loss, kW;

[0146] t ch，in ——chilled water inlet temperature of chiller, °C;

[0147] t ch，out ——Chilling water outlet temperature of chiller, °C;

[0148] t ch，ave ——Average temperature of chilled water in chiller, °C;

[0149] In the formula, t ch，ave is the average temperature of chilled water inlet and outlet of the chiller:

[0150]

[0151] t cd，ave ——Average temperature of cooling water in chiller, °C;

[0152] W chp ——Energy consumption of chilled water pump, kW;

[0153] W cdp ——Energy consumption of cooling water pump equipment, kW;

[0154] Q eva ——Evaporator heat exchange capacity, kW;

[0155] Q con ——Heat exchange capacity of condenser, kW;

[0156] t eva ——Evaporator temperature, °C;

[0157] t con ——Condenser temperature, °C;

[0158] T0——ambient temperature, K.

[0159] The total amount of water chiller subsystem generated during operation damage:

[0160]

[0161] Chiller power and COP, part load rate X i The relationship formula is as follows:

[0162]

[0163] P i =Q c ×X i (1-11)

[0164] The formula for the chiller evaporator and condenser outlet water temperature is as follows:

[0165]

[0166]

[0167] P i ——The load borne by the i-th chiller, kW;

[0168] COP i ——The performance coefficient of the i-th chiller;

[0169] W ch，i ——Hourly power of the i-th chiller, kW;

[0170] Q c ——Hourly cooling load of the building, kW;

[0171] m i ——The chilled water volume of the i-th chiller, kg / s;

[0172] m j ——Cooling water volume of the jth chiller, kg / s;

[0173] X i ——partial load rate of the i-th chiller;

[0174] C p ——The specific heat of melting of water.

[0175] Execute step S203 to calculate the third summer heat output of the underground pipe system of the composite ground source heat pump system in summer. The loss is:

[0176] Among them, I III，s For the buried pipe system in the third day of summer Loss, E gs，in The heat of the working fluid at the inlet of the buried pipe system , E gs，out Heat of the working fluid at the outlet of the buried pipe system , E gs，a Heat exchanged between the buried pipe and the soil , m gs，w is the mass flow rate of water in the underground pipe system, e gs，in is the unit mass heat of the working fluid at the inlet of the buried pipe system , e gs，out The unit mass heat of the working fluid at the outlet of the buried pipe system , Q gs，a is the heat release rate of the buried pipe to the soil, T soil is the soil temperature, T0 is the atmospheric temperature;

[0177] Calculate the buried pipe system of the combined ground source heat pump system in the third winter of winter The loss is:

[0178] Among them, I III，w For the buried pipe system in the third winter of winter damage.

[0179] Specifically, construct an underground pipe system Analytical model.

[0180] For the ground heat exchanger subsystem, in summer Loss is equal to the import and export working fluid Difference and soil heat exchanger heat difference, The loss calculation formula is:

[0181]

[0182]

[0183] I III，s ——Ground pipe heat exchanger in summer Loss, kW;

[0184] E gs，in ——Heat of the working fluid at the inlet of the buried pipe system , kW;

[0185] E gs，out ——Heat of the working fluid at the outlet of the buried pipe system , kW;

[0186] E gs，a ——Heat exchange between buried pipe and soil , kW;

[0187] Q gs，a ——heat release rate of buried pipe to soil, kW;

[0188] e i ——Heat per unit mass , kJ / kg;

[0189] e gs，in is the unit mass heat of the working fluid at the inlet of the buried pipe system , kJ / kg;

[0190] e gs，out The unit mass heat of the working fluid at the outlet of the buried pipe system , kJ / kg;

[0191] T soil ——soil temperature, K;

[0192] T0——atmospheric temperature, K;

[0193] m gs，w ——Mass flow rate of water in the buried pipe system, kg / s;

[0194] h i ——inlet enthalpy;

[0195] h o —— outlet enthalpy;

[0196] s i ——import entropy value;

[0197] s o ——export entropy value;

[0198] C p ——specific heat capacity;

[0199] T i ——inlet temperature;

[0200] T0——outlet temperature.

[0201] For the underground heat exchanger subsystem, in winter Loss is equal to the import and export working fluid Difference and soil heat exchanger heat the sum of The loss calculation formula is:

[0202]

[0203]

[0204] Among them, I III，w For underground heat exchangers in winter Loss, kW;

[0205] Execute step S204 to calculate the fourth The loss is:

[0206] Among them, I IV The fourth subsystem of the ground source heat pump Loss, I IV，1 Produced during the refrigerant cycle Loss, I IV，2 It is generated during the heat exchange between refrigerant and chilled water or cooling water. damage.

[0207] Specifically, construct a ground source heat pump subsystem Analytical model. The calculation method of the ground source heat pump subsystem is the same as that of the chiller subsystem. Losses include: Loss, generated during the heat exchange between refrigerant and chilled water and cooling water The loss generated during the refrigerant circulation process damage:

[0208]

[0209] I IV，1 ——Generated during the refrigerant cycle Loss, kW;

[0210] W hp ——Energy consumption of ground source heat pump unit, kW;

[0211] Q eva ——Evaporator heat exchange capacity, kW;

[0212] Q con ——Heat exchange capacity of condenser, kW;

[0213] t eva ——Evaporator temperature, °C;

[0214] t con ——Condenser temperature, °C;

[0215] T0——ambient temperature, K.

[0216] Produced during heat exchange between refrigerant and chilled water or cooling water Loss calculation formula:

[0217]

[0218] I IV，2 ——Generated during heat exchange between refrigerant and chilled water or cooling water damage;

[0219] t eva ——Evaporator temperature, °C;

[0220] t hp，ave ——Average temperature of ground source heat pump, °C;

[0221] T0——ambient temperature, K;

[0222] Q eva ——Evaporator heat exchange capacity, kW;

[0223] t gs，ave ——The average temperature of the underground pipe system, specifically the average water temperature of the underground pipe system, °C;

[0224] t con ——Condenser temperature, °C;

[0225] Q con ——Heat exchange capacity of condenser, kW;

[0226] W gsp ——Energy consumption of underground water pump, kW;

[0227] W hpp ——Energy consumption of user’s water pump, kW.

[0228] Power, COP and partial load rate of ground source heat pump unit i The relationship formula is as follows:

[0229]

[0230] P i =Q c ×Xi (1-22)

[0231] The formula for the outlet water temperature on the user side and the ground source side of the ground source heat pump unit is as follows:

[0232]

[0233]

[0234] P i ——The load borne by each ground source heat pump unit, kW;

[0235] COP i ——The performance coefficient of each i ground source heat pump unit;

[0236] W hp，i ——Hourly power of each i-th ground-source heat pump unit, kW;

[0237] m i ——The amount of chilled water for each ground source heat pump unit, kg / s;

[0238] m j ——Cooling water volume of each j ground source heat pump units, kg / s.

[0239] X i ——Partial load rate of each i ground source heat pump unit;

[0240] t hp，out ——The water temperature at the outlet of each ground source heat pump, °C;

[0241] t hp，in ——Water temperature at the inlet of each ground source heat pump, °C;

[0242] t gs，out ——Water temperature at the outlet of the buried pipe system, °C;

[0243] t gs，in ——Water temperature at the inlet of the buried pipe system, ℃.

[0244] Then, step S205 is executed to calculate the fifth The loss is:

[0245] I V =P g -P g

[0246] P g =q g L g

[0247] P g =m g (eg，out -e g，in ), where I V The fifth subsystem of the gas boiler Loss, F g is the energy generated by natural gas, q g is the calorific value of natural gas, L g is the volume flow rate, m g is the mass flow rate of water in the boiler system, P g is an auxiliary parameter, e g，out is the unit mass heat of the outlet water in the boiler system , e g，in is the unit mass heat of the inlet water in the boiler system .

[0248] Specifically, construct the gas boiler subsystem Analytical model. Simplify the analysis of the boiler system and Differential analysis calculation, not considering other The formula is as follows:

[0249] I V =P g -P g (1-25)

[0250] P g =q g L g (1-26)

[0251] I V ——Generated by the gas boiler subsystem Loss, kW;

[0252] F g ——Energy generated by natural gas, kW;

[0253] q g ——The calorific value of natural gas is 35580 kJ / m 3 ;

[0254] L g ——Volume flow rate, m 3 / s.

[0255] P g =m g (e g，out -e g，in ) (1-27)

[0256]

[0257] m g ——Mass flow rate of water in the boiler system, kg / s;

[0258] e i ——Heat per unit mass , kJ / kg;

[0259] Gas boiler operating power and part load rate X i The relationship formula is as follows:

[0260] P i =Q c ×X i (1-29)

[0261] The formula for the outlet water temperature of a gas boiler is as follows:

[0262]

[0263] P i ——The load borne by the i-th gas boiler, kW;

[0264] m g ——Hot water volume of the i-th gas boiler, kg / s;

[0265] X i ——partial load rate of the i-th gas boiler;

[0266] t g，out ——Outlet water temperature of the i-th gas boiler, °C;

[0267] t g，out ——Outlet water temperature of the i-th gas boiler, ℃;.

[0268] Then, step S206 is executed to set the objective function as:

[0269] I summer =I I +I II +I III，s +I IV

[0270] I winter =I III，w +I IV +I V

[0271] minl summer =f(PLR1, PLR2, PLR3, PLR4)

[0272] I winter =f(PLR1, PLR2, PLR5, PLR6)

[0273] The constraints are:

[0274] 0≤PLRi ≤1

[0275]

[0276] i=1,2,...,n

[0277] Among them, I summer For summer Loss, I winter For winter Loss, I I The first cooling tower subsystem Loss, I II The second Loss, I III，s For the underground pipe system in the third summer Loss, I III，w For the buried pipe system in the third winter Loss, I IV The fourth subsystem of the ground source heat pump Loss, I V The fifth subsystem of the gas boiler loss, PLR1 is the load rate of the first geothermal heat pump unit, PLR2 is the load rate of the second geothermal heat pump unit, PLR3 is the load rate of the first chiller unit, PLR4 is the load rate of the second chiller unit, PLR5 is the load rate of the first gas boiler, PLR6 is the load rate of the second gas boiler, Q is the load value, Q i.ax is the maximum cooling capacity of the i-th unit, which includes a ground source heat pump unit, a chiller, and a gas boiler.

[0278] Specifically, according to Balancing equations System optimization analysis:

[0279] In order to obtain the unit operating efficiency, it is necessary to explore the relationship between the unit partial load rate PLR ​​and COP. The unit partial load rate PLR ​​refers to the ratio of the actual cooling (heating) capacity of the unit to the rated cooling (heating) capacity. For details, see formula (1-31). The relationship between the unit's COP and PLR satisfies the following formula:

[0280] COP=c0+c1×PLR+c2×PLR 2 (1-31)

[0281] c0~c2——regression coefficients;

[0282] PLR – Part Load Ratio.

[0283] The combined ground source heat pump system is based on The analysis model is based on five subsystems. The optimization goal is to minimize the loss, and seek the optimal allocation strategy for the system with 2 ground source heat pump units and 2 chillers in summer and 2 ground source heat pump units and 2 gas boilers in winter. The objective function of the balanced equation is as follows:

[0284] I summer =I I +I II +I III，s +I IV (1-32)

[0285] I winter =I III，w +I IV +I V (1-33)

[0286] I summer =f(PLR1, PLR2, PLR3, PLR4) (1-34)

[0287] I winter =f(PLR1, PLR2, PLR5, PLR6) (1-35)

[0288] The constraints are:

[0289] 0≤PLR i ≤1 (1-36)

[0290]

[0291] i=1,2,...,n (1-38)

[0292] I summer ——For summer Loss, kW;

[0293] I winter ——For winter Loss, kW;

[0294] PLR i ——is the partial load rate of the unit, where 1 and 2 represent two ground source heat pump units respectively; 3 and 4 represent two chillers respectively, 5 and 6 represent two gas boilers respectively, and n=6.

[0295] Q——The load value at that time point, kW;

[0296] Q i.max ——The maximum cooling capacity of the i-th unit under specific working conditions, kW;

[0297] f——Multi-objective optimization analysis equation.

[0298] Finally, step S207 is performed, respectively, based on the total summer Minimum loss and total winter The optimization is carried out with the goal of minimizing the loss, and the load rate of the first geothermal heat pump unit, the load rate of the second geothermal heat pump unit, the load rate of the first chiller unit, the load rate of the second chiller unit, the load rate of the first gas boiler and the load rate of the second gas boiler are obtained.

[0299] use The equilibrium equation and the multi-objective optimization analysis equation f are used. The Matlab optimization algorithm toolbox is used to select the multi-objective optimization analysis equation of the genetic algorithm and calculate the optimal solution according to the constraints and The equilibrium equation is programmed. This embodiment uses the version of Matlab2022a and the genetic algorithm multi-objective optimization method in the Optimization toolbox. The model interface is as follows Figure 4 As shown in the figure. Matlab uses genetic algorithm multi-objective optimization to With the minimum loss as the goal, solve the operation status of each unit on a typical summer day hour by hour, and solve PLR1~PLR4; solve the operation status of each unit on a typical winter day hour by hour, and solve PLR1, PLR2, PLR5, and PLR6. Figure 5 Shown is a typical day genetic algorithm operation strategy allocation diagram.

[0300] In some embodiments, the method further includes analyzing the optimization results.

[0301] Specifically, the optimization results of the system are analyzed.

[0302] Typical Day Genetic Algorithm After analysis and optimization, the partial load rate allocation strategy is as follows: Figure 3 PLR represents the partial load rate of the unit and is used to guide the unit operating conditions, thereby obtaining Loss optimal solution.

[0303] Finally, the system operation strategy is evaluated. By comparing and analyzing the optimized operation strategy with the conventional algorithm operation strategy, we can get The optimization rate of power consumption, the optimization rate of carbon emissions and the optimization rate of operating expenses are calculated based on the above standards. The formula is as follows.

[0304] γ=(β1+β2+β3+β4)×100 (1-39)

[0305] γ——evaluation index under a certain working condition;

[0306] β1——Under a certain working condition Loss optimization rate;

[0307] β2——Power consumption optimization rate under a certain working condition;

[0308] β3——Carbon emission optimization rate under a certain working condition;

[0309] β4——Optimization rate of operating costs under certain working conditions.

[0310] This embodiment adopts The analysis method proposes an analysis from the perspective of energy quality. conversion, utilization and loss of It is a general term for effective energy in energy. It combines "quantity" and "quality", that is, it combines the first law of thermodynamics with the second law of thermodynamics. It evaluates and analyzes the system from the perspective of energy quantity and quality, reflecting the continuous degradation of energy "quality" during energy conversion and transmission. The optimal loss calculation method is used to guide the system's operating strategy.

[0311] like Figure 6 The best embodiment of the present invention is a composite ground source heat pump system. The workflow diagram of the loss optimization method includes:

[0312] Step S601, preliminary project research: building information, design conditions, hourly load, equipment selection, etc.;

[0313] Step S602, research on control strategy of composite ground source heat pump system;

[0314] Step S603, Balancing equations, including building cooling tower subsystems Balance equations, chiller subsystem Balance equations, buried pipe systems Balance equation, ground source heat pump subsystem Balance equations, gas boiler subsystem Balance equations;

[0315] Step S604, System optimization analysis, multi-objective optimization through genetic algorithm, determination of unit operation curve, and function solution;

[0316] Step S605, analyzing optimization results;

[0317] Step S606, running strategy evaluation.

[0318] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0319] like Figure 7 The figure shows a hardware structure diagram of an electronic device of the present invention, including:

[0320] at least one processor 701; and,

[0321] A memory 702 that is communicatively connected to at least one of the processors 701; wherein,

[0322] The memory 702 stores instructions that can be executed by at least one of the processors. The instructions are executed by at least one of the processors to enable at least one of the processors to execute the above-mentioned combined ground source heat pump system. Loss optimization method.

[0323] Figure 7 A processor 701 is taken as an example.

[0324] The electronic device may further include: an input device 703 and a display device 704 .

[0325] The processor 701, the memory 702, the input device 703 and the display device 704 may be connected via a bus or other means, and the figure takes the connection via a bus as an example.

[0326] The memory 702 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer executable programs and modules, such as the composite ground source heat pump system in the embodiment of the present application. Program instructions / modules corresponding to the loss optimization method, for example, Figure 1 The processor 701 executes various functional applications and data processing by running the non-volatile software programs, instructions and modules stored in the memory 702, that is, the overall operation of the composite ground source heat pump system in the above embodiment is realized. Loss optimization method.

[0327] The memory 702 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required for at least one function; the data storage area may store data stored according to the total amount of the combined ground source heat pump system. In addition, the memory 702 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory 702 may optionally include a memory remotely arranged relative to the processor 701, and these remote memories may be connected to the processor 701 through a network to execute the overall operation of the composite ground source heat pump system. Examples of the above network include but are not limited to the Internet, corporate intranet, local area network, mobile communication network and combinations thereof.

[0328] The input device 703 can receive the user's input click and generate the composite ground source heat pump system. The display device 704 may include a display device such as a display screen.

[0329] The one or more modules are stored in the memory 702, and when the one or more processors 701 are executed, the composite ground source heat pump system in any of the above method embodiments is executed. Loss optimization method.

[0330] The present invention calculates the heat transfer coefficients of multiple subsystems in the composite ground source heat pump system respectively. loss, and then according to multiple Loss System optimization analysis is performed to obtain the optimized unit partial load rate of multiple units of the composite ground source heat pump system, so as to realize the composite ground source heat pump system. The loss optimal solution calculation method enables each unit to operate at the optimal load rate, thereby improving the efficiency of the composite ground source heat pump system.

[0331] An embodiment of the present invention provides a storage medium, wherein the storage medium stores computer instructions, and when a computer executes the computer instructions, it is used to execute the above-mentioned composite ground source heat pump system. All steps of the loss optimization method.

[0332] In the context of the present disclosure, a storage medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or apparatus. The storage medium may be a machine-readable signal medium or a machine-readable storage medium. Alternatively, the storage medium may be a non-temporary computer-readable storage medium, for example, a non-temporary computer-readable storage medium may be a ROM, a random access memory (Random Access Memory, RAM), a compact disc read-only memory (Compact Disc ROM, CD-ROM), a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0333] An embodiment of the present invention provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the total loss optimization method of the composite ground source heat pump system as described above.

[0334] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A composite ground source heat pump system The loss optimization method, the composite ground source heat pump system comprises: A cooling tower subsystem, a chiller subsystem, a buried pipe subsystem, a ground source heat pump subsystem, a gas boiler subsystem and a terminal subsystem, wherein the cooling tower subsystem is connected to the chiller subsystem, the buried pipe subsystem is connected to the ground source heat pump subsystem, the chiller subsystem, the ground source heat pump subsystem and the gas boiler subsystem are collectively connected, characterized in that the method comprises: Calculate the first step of the cooling tower subsystem of the combined ground source heat pump system The second Loss, calculation of the third The fourth Loss calculation of the gas boiler subsystem of the composite ground source heat pump system damage; According to the first Loss, the second Loss, the third Loss, the fourth Loss and the fifth Loss, conduct The system is optimized and analyzed to obtain the optimized unit partial load rates of the multiple unit parts of the composite ground source heat pump system.

2. The combined ground source heat pump system according to claim 1 The loss optimization method is characterized in that: The first step of calculating the cooling tower subsystem of the composite ground source heat pump system Loss, including: Calculate the first step of the cooling tower subsystem of the combined ground source heat pump system The loss is: Among them, F I For cooling tower subsystem Fuel, I I The first cooling tower subsystem Loss, W ct is the energy consumption of cooling tower equipment, E cd,in,i is the cooling water inlet of the i-th cooling tower E cd,out,i is the cooling water outlet of the i-th cooling tower T0 is the ambient temperature, t cd,ave The average temperature of cooling water in the cooling tower.

3. The combined ground source heat pump system according to claim 1 The loss optimization method is characterized in that: The second step of calculating the chiller subsystem of the composite ground source heat pump system Loss, including: Calculate the second The loss is: in: I II The second Loss, I II,1 Produced by the refrigeration cycle Loss, I II,2 It is generated during the heat exchange between refrigerant and chilled water or cooling water. Loss, t cd,ave is the average temperature of cooling water in the chiller, T0 is the ambient temperature, W ch is the energy consumption of the chiller, W cdp is the energy consumption of cooling water pump equipment, W chp is the energy consumption of the chilled water pump, t ch,ave is the average temperature of chilled water in the chiller, t cd,ave is the average temperature of cooling water in the chiller, Q eva Exchange heat for the evaporator.

4. The combined ground source heat pump system according to claim 1 The loss optimization method is characterized in that: The third method of calculating the buried pipe system of the composite ground source heat pump system Loss, including: Calculate the buried pipe system of the combined ground source heat pump system in the third quarter of summer The loss is: Among them, I III,s For the underground pipe system in the third summer Loss, E gs,in The heat of the working fluid at the inlet of the buried pipe system E gs,out Heat of the working fluid at the outlet of the buried pipe system E gs,a Heat exchanged between the buried pipe and the soil m gs,w is the mass flow rate of water in the underground pipe system, e gs,in is the unit mass heat of the working fluid at the inlet of the buried pipe system e gs,out The unit mass heat of the working fluid at the outlet of the buried pipe system Q gs,a is the heat release rate of the buried pipe to the soil, T soil is the soil temperature, T0 is the atmospheric temperature; Calculate the buried pipe system of the combined ground source heat pump system in the third winter of winter The loss is: Among them, I III,w For the buried pipe system in the third winter damage.

5. The combined ground source heat pump system according to claim 1 The loss optimization method is characterized in that: The fourth step of calculating the ground source heat pump subsystem of the composite ground source heat pump system Loss, including: Calculate the fourth The loss is: Among them, I IV The fourth subsystem of the ground source heat pump Loss, I IV,1 Produced during the refrigerant cycle Loss, I IV,2 It is generated during the heat exchange between refrigerant and chilled water or cooling water. loss, T0 is the ambient temperature, t gs,ave is the average temperature of the buried pipe system, Whp is the energy consumption of the ground source heat pump unit, W gsp is the energy consumption of the underground water pump, W hpp is the energy consumption of the user's water pump, t hp,ave is the average temperature of the ground source heat pump, Q eva Exchange heat for the evaporator.

6. The combined ground source heat pump system according to claim 1 The loss optimization method is characterized in that: The fifth step of calculating the gas boiler subsystem of the composite ground source heat pump system Loss, including: Calculate the fifth The loss is: I V =F g -P g F g =q g L g P g =m g (e g，out -e g，in ), where I V The fifth subsystem of the gas boiler Loss, F g is the energy generated by natural gas, q g is the calorific value of natural gas, L g is the volume flow rate, m g is the mass flow rate of water in the boiler system, e g,out is the unit mass heat of the outlet water in the boiler system For example, in is the unit mass heat of the inlet water in the boiler system 7. The combined ground source heat pump system according to any one of claims 1 to 6 The loss optimization method is characterized in that: According to the first Loss, the second Loss, the third Loss, the fourth Loss and the fifth Loss, conduct The system optimization analysis obtains the optimized unit partial load rate of multiple unit parts of the composite ground source heat pump system, including: Set the objective function as: I summer =I I +I II +I III,s +I IV I wint er =I III，w +I IV +I V minI summer =f(PLR1,PLR2,PLR3,PLR4) minI winter =f(PLR1,PLR2,PLR5,PLR6) The constraints are: 0≤PLR i ≤1 Among them, I summer For summer Loss, I winter For winter Loss, I I The first cooling tower subsystem Loss, I II The second Loss, I III,s For the underground pipe system in the third summer Loss, I III,w For the buried pipe system in the third winter Loss, I IV The fourth subsystem of the ground source heat pump Loss, I V The fifth subsystem of the gas boiler loss, PLR1 is the load rate of the first geothermal heat pump unit, PLR2 is the load rate of the second geothermal heat pump unit, PLR3 is the load rate of the first chiller unit, PLR4 is the load rate of the second chiller unit, PLR5 is the load rate of the first gas boiler, PLR6 is the load rate of the second gas boiler, Q is the load value, Q i.max is the maximum cooling capacity of the i-th unit, which includes ground source heat pump unit, chiller unit and gas boiler; Summer Minimum loss and total winter The optimization is carried out with the goal of minimizing the loss, and the load rate of the first geothermal heat pump unit, the load rate of the second geothermal heat pump unit, the load rate of the first chiller unit, the load rate of the second chiller unit, the load rate of the first gas boiler and the load rate of the second gas boiler are obtained.

8. An electronic device, characterized in that: include: at least one processor; as well as, a memory communicatively connected to at least one of the processors; wherein, The memory stores instructions that can be executed by at least one of the processors, and the instructions are executed by at least one of the processors to enable at least one of the processors to execute the combined ground-source heat pump system as described in any one of claims 1 to 7. Loss optimization method.

9. A storage medium, characterized in that: The storage medium stores computer instructions, and when the computer executes the computer instructions, it is used to execute the combined ground source heat pump system according to any one of claims 1 to 7. All steps of the loss optimization method.

10. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instruction is executed by the processor, the composite ground source heat pump system as claimed in any one of claims 1 to 7 is realized. Loss optimization method.

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