A comprehensive energy system optimization system and method taking into account user dissatisfaction

Abstract

The present invention relates to an integrated energy system optimization system and method taking into account user dissatisfaction, belonging to the technical field of integrated energy system optimization, the method comprises: obtaining the operating parameters, status information and actual load demand information of the integrated energy system unit, establishing the equipment model of the integrated energy system unit, establishing the multi-energy flow model of the integrated energy system, establishing the user dissatisfaction model, establishing the optimization target indicator problem; optimizing the integrated energy system and the user load, obtaining the user load demand, the HVAC system temperature setting value and the output of each device of the integrated energy system; the system comprises a data acquisition module, modules of each energy device of the integrated energy system, a multi-energy flow model establishment module, a user dissatisfaction model establishment module, an optimization problem module and an optimization module. The present invention reduces the energy cost and dissatisfaction of the user under the condition of ensuring the reliable operation of the integrated energy system, thereby improving the social welfare of the entire system.

Description

Technical Field

[0001] The present invention relates to an integrated energy system optimization system and method taking user dissatisfaction into consideration, belonging to the technical field of integrated energy system optimization. Background Art

[0002] In recent years, with the acceleration of the industrialization and modernization of human society and the rapid development of the economy, the demand for various types of energy such as electricity, natural gas, heating and cooling has increased dramatically in countries around the world, and the contradiction between energy supply and demand has become increasingly prominent, especially in industrial parks. It is expected that from 2012 to 2040, this demand will increase by 48%. As of 2015, 60% of China's national industrial output value was produced by industrial parks. Correspondingly, the energy consumption in industrial parks accounts for about 70% of the national energy consumption. But at the same time, in traditional industrial parks, energy scheduling lacks unified optimization, and there are widespread problems such as resource waste and resource shortage, which greatly affects the operating efficiency and economic and environmental benefits of the resource supply system. In order to solve the above problems, concepts such as integrated energy system (IES) and demand response (DR) have been proposed. The integrated energy system is an important physical carrier of the energy Internet. It couples different energy networks and can achieve cascade utilization of energy through advanced energy production and conversion, thereby improving energy utilization. Demand response is that energy users optimize their own loads by adjusting their flexible loads, improve the relationship between energy supply and demand, and reduce user energy costs.

[0003] In existing research, integrated energy systems and demand response are mostly aimed at reducing energy costs, optimizing the output of equipment on the energy supply side and the load demand on the energy demand side, ignoring the changes in the efficiency of energy users' production equipment and the thermal comfort of workshop workers, which affects the production plans and benefits of energy users in actual production. Summary of the invention

[0004] The purpose of the present invention is to provide an integrated energy system optimization system and method taking into account user dissatisfaction, thereby reducing user energy costs and dissatisfaction, as well as the impact of load regulation on workshop ambient temperature and workers' thermal comfort, thereby ensuring the efficient operation of industrial equipment and the production willingness of workshop workers, achieving the optimization of the integrated energy system and users, and providing a feasible technical solution for the integrated energy system optimization method taking into account demand response.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A method for optimizing an integrated energy system taking into account user dissatisfaction comprises the following steps:

[0007] (101) obtaining operating parameters and status information of the integrated energy system units and actual load demand information of users;

[0008] (102) establishing a comprehensive energy system unit equipment model according to the operation parameters and status information of the comprehensive energy system unit; the comprehensive energy system unit equipment model includes a combined heat and power unit device model, a heat pump device model, a photovoltaic power generation device model, an electric refrigerator device model, a heating ventilation and air conditioning system model, and an energy storage device model;

[0009] (103) establishing a multi-energy flow model of the integrated energy system according to the integrated energy system unit equipment model; the multi-energy flow model of the integrated energy system includes electric energy flow, heat energy flow, cold energy flow and gas energy flow models;

[0010] (104) establishing a user dissatisfaction model based on the actual load demand information of the user; the user dissatisfaction model includes an energy user equipment production efficiency dissatisfaction model and a workshop worker thermal discomfort model;

[0011] (105) establishing an optimization target indicator problem based on the integrated energy system unit equipment model, the user's actual load demand information, and the user dissatisfaction model with the goal of minimizing the total system operating cost;

[0012] (106) The integrated energy system and user load are optimized according to the optimization target indicator problem to obtain user load demand, HVAC system temperature setting value and output of each device in the integrated energy system.

[0013] A further improvement of the technical solution of the present invention is that the step (102) establishes an equipment model of the integrated energy system unit according to the operating parameters and status information of the integrated energy system unit, specifically including:

[0014] The combined cooling, heating and power unit model is:

[0015]

[0016] in, They represent the electrical output, heat output, and cooling output of the combined cooling, heating, and power unit at time t, respectively. They represent the electricity conversion efficiency, heat conversion efficiency, and cooling conversion efficiency of the combined heat and power unit, respectively. represents the natural gas consumption of the combined cooling, heating and power unit at time t;

[0017] The heat pump device model is:

[0018]

[0019] in, represents the heat output of the heat pump device at time t, η HP Indicates the heat conversion efficiency of the heat pump device, represents the amount of electricity consumed by the heat pump device at time t;

[0020] The photovoltaic power generation device model is:

[0021]

[0022] in, represents the power generation of the photovoltaic power generation device at time t, η PV is the power generation efficiency of the photovoltaic power generation device, S is the area of ​​the photovoltaic power generation device, is the light intensity per unit area of ​​the photovoltaic power generation device at time t;

[0023] The electric refrigerator device model is:

[0024]

[0025] in, represents the cooling output of the electric refrigerator at time t, η ER represents the cold conversion efficiency of the electric refrigerator device, represents the amount of electricity consumed by the electric refrigerator at time t;

[0026] The HVAC system model is:

[0027]

[0028]

[0029] in, represents the cooling output of the HVAC system at time t, η HVAC represents the cooling efficiency of the HVAC system, represents the power consumed by the HVAC system at time t, T0 represents the outdoor ambient temperature at the current time, T represents the temperature setting value of the HVAC system at the current time, and b1, b2, and b3 are the energy consumption parameters of the HVAC system;

[0030] The energy storage device model is:

[0031]

[0032] Among them, S(t) represents the energy storage state of the energy storage device at time t, Ω represents the total capacity of the energy storage device, σ ESS Represents the self-loss coefficient of the energy storage device, P ch (t), P dis (t) respectively represent the charging and discharging power of the energy storage device at time t, η ch , η dis represents the charging and discharging efficiencies of the energy storage device, σ represents the charging and discharging state variables of the energy storage device, σ=1 represents charging, and σ=0 represents discharging, which ensures that the energy storage device cannot be charged and discharged at the same time.

[0033] A further improvement of the technical solution of the present invention is that the step (103) establishes a multi-energy flow model of the integrated energy system according to the integrated energy system unit equipment model, specifically including:

[0034] In the multi-energy flow model of the integrated energy system,

[0035] Power flow:

[0036]

[0037] Heat flow:

[0038]

[0039] Cold Energy Flow:

[0040]

[0041]

[0042] Chi energy flow:

[0043]

[0044] Among them, P t represents the amount of electricity purchased by the integrated energy system from the external power grid at time t, represents the electrical output of the electrical energy storage system at time t, and They represent the discharge and charging power of the energy storage device at time t, respectively, i t represents the energy consumption of the energy user's electrical equipment i at time t, H t represents the amount of heat purchased by the integrated energy system from the external heat network at time t, represents the heat output of the thermal energy storage system at time t, and They represent the heat release and heat charging power of the thermal energy storage device at time t, represents the heat energy consumption of the heat-using equipment i of the energy user at time t, represents the cold output of the cold energy storage system at time t, and They represent the cooling power and charging power of the heat and cooling energy device at time t, represents the cooling energy consumption of cooling equipment i of energy user at time t, represents the ambient temperature equilibrium cooling energy consumption of energy user's production workshop i at time t, G t represents the amount of natural gas purchased by the integrated energy system from the external gas grid at time t, Represents the amount of natural gas consumed by the combined heat and power unit i at time t.

[0045] A further improvement of the technical solution of the present invention is that the step (104) establishes a user dissatisfaction model based on the user's actual load demand information, specifically including:

[0046] The energy user equipment production efficiency dissatisfaction model is:

[0047]

[0048] in, represents the dissatisfaction of production equipment i at time t, θ represents the dissatisfaction coefficient, P i t represents the actual load power of production equipment i at time t, represents the expected load power of production equipment i at time t;

[0049] The thermal discomfort model of workshop workers is:

[0050]

[0051]

[0052]

[0053]

[0054]

[0055] PPD(T i )=100-95exp(-0.03353PMV 4 (T i )-0.2179PMV 2 (T i )) (19)

[0056] Among them, M i represents the metabolic rate of human beings, W i Represents the mechanical power of the human body, Indicates the surface temperature of a person's clothes, f i cl It is the ratio of the surface area of ​​clothing to the exposed body surface area. represents the equivalent thermal resistance of the clothes, P i aIndicates the partial pressure of air vapor around the human body. represents the average indoor radiation temperature, represents the convective heat transfer coefficient, V i a Indicates relative air velocity.

[0057] A further improvement of the technical solution of the present invention is that: the step (105) establishes an optimization target indicator problem based on the integrated energy system unit equipment model, the user's actual load demand information and the user dissatisfaction model, with the goal of minimizing the total system operating cost. The total system operating cost includes the user dissatisfaction cost, the integrated energy system energy cost and the integrated energy system operation and maintenance cost, specifically including:

[0058] The energy user dissatisfaction cost function is:

[0059]

[0060] Among them, C Dis represents the total cost of user dissatisfaction, C IE and C PPD They represent the user's production efficiency dissatisfaction cost and the workshop worker's thermal discomfort cost respectively. K1 and K2 represent the dissatisfaction cost conversion coefficient. and They represent user dissatisfaction with production efficiency and thermal discomfort of workshop workers respectively;

[0061] In the problem of establishing the optimization target index with the goal of minimizing the total operating cost of the system,

[0062] Daily operating costs of the integrated energy system:

[0063] C DOC =C Enegy +C OM (twenty one)

[0064] Energy costs of comprehensive energy system:

[0065]

[0066] Operation and maintenance costs of integrated energy system:

[0067]

[0068] Integrated energy system optimization problem:

[0069]

[0070] Among them, C Enegy , C OM Respectively represent the energy cost and operation and maintenance cost of the comprehensive energy system, CE , C H , C G Represent the electricity cost, heat cost, and natural gas cost respectively, P t , H t 、F t They represent the electricity, heat and gas purchases of the integrated energy system at time t, Respectively represent the unit prices of electricity, heat and gas at time t, It is uniformly expressed as the operating power of device i at time t, represents the operation and maintenance cost per unit operating power of equipment i, τ is the trade-off factor between the operation cost of the integrated energy system and the user dissatisfaction cost, Respectively represent the minimum and maximum operating power of device i, S min , S max Respectively represent the minimum and maximum energy storage states of the energy storage device, S L , S T Respectively represent the initial and final energy storage states of the energy storage device in an operation cycle, P ch,max , P dis,max They respectively represent the maximum charging and discharging power of the energy storage device.

[0071] A comprehensive energy system optimization system taking into account user dissatisfaction, comprising:

[0072] Data acquisition module, used to obtain the operating parameters and status information of the integrated energy system units and the actual load demand information of users;

[0073] The energy equipment modules of the integrated energy system are used to establish the equipment model of the integrated energy system units;

[0074] Multi-energy flow model building module, used to build a multi-energy flow model for integrated energy systems;

[0075] User dissatisfaction model building module, used to build a user dissatisfaction model;

[0076] Optimization problem module, used to establish optimization target indicator problems;

[0077] The optimization module is used to solve the optimization problem and obtain the user load demand, HVAC system temperature setting value and the output of each device in the integrated energy system.

[0078] Due to the adoption of the above technical solution, the technical effects achieved by the present invention are as follows:

[0079] The present invention takes into account a more comprehensive integrated energy system with multiple energy flow structures. The input energy flow includes electrical energy flow, thermal energy flow, and natural gas flow, and the output energy flow includes electrical energy flow, thermal energy flow, and cold energy flow. It also includes multiple energy storage devices such as cold, heat, and electricity, which can fully meet the energy needs of users and reduce energy costs.

[0080] The present invention takes into account the optimization of both the supply and demand sides of the integrated energy system. Compared with the existing unilateral optimization of the integrated energy system, it can further improve the total social welfare, reduce the energy cost of users, and improve energy utilization.

[0081] The present invention establishes a user equipment production efficiency dissatisfaction model and a workshop worker discomfort model, which reduces the offset between the actual load and the expected load while meeting production requirements, reduces the worker discomfort, and improves the factory's production efficiency and the workers' production willingness.

[0082] The present invention takes the minimum total cost as the goal, and establishes a load optimization scheduling model with energy supply and demand balance and equipment operation range as constraints. Under the condition of ensuring the reliable operation of the integrated energy system, it achieves a compromise between reducing user energy costs and reducing dissatisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] Figure 1 is a flow chart of the optimization method of the present invention;

[0084] Figure 2 It is a schematic diagram of the integrated energy system architecture of the present invention;

[0085] Figure 3 It is the energy flow structure diagram of the comprehensive energy system of the present invention;

[0086] Figure 4 It is a user schematic diagram of the present invention;

[0087] Figure 5 It is a schematic diagram of the optimization system structure of the present invention. DETAILED DESCRIPTION

[0088] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0089] Integrated energy system: An integrated energy system refers to the use of advanced physical information technology and innovative management models in a certain area to integrate multiple energy sources such as oil, natural gas, electricity, and thermal energy in the area, and realize coordinated planning and optimized operation among multiple heterogeneous energy subsystems. The integrated energy system includes combined heat and power units fueled by natural gas, photovoltaic units, heat pump units, electric refrigeration units, heating, ventilation and air conditioning systems (HVAC), energy storage units, and user production equipment. It supplies cold, heat, and electricity to users through the park distribution network, the park heating network, and the park cooling network; photovoltaic units and power storage devices are connected to the park distribution network, and the park distribution network is connected to the main grid through busbars. The photovoltaic power generation device and the combined heat and power unit can meet part of the electricity demand in the park. When the electricity demand is greater than the power generation of the park, it can be supplemented by purchasing electricity from the main grid. When the electricity demand is less than the power generation of the park, the excess electricity can be sold to the grid; the thermal energy demand in the park is met by the heat storage device, heat pump device, and combined heat and power unit. Heat supply; The cooling energy demand in the park includes two parts: equipment cooling load and environmental cooling load. The equipment cooling load is supplied by ice storage devices, electric refrigeration devices and combined heat and power units, and the environmental cooling load is supplied by the HVAC system; The integrated energy system has a control center, which optimizes the optimal operation mode of the system online, obtains the output of each device under the optimal conditions of the system, the user-side load value and the HVAC system temperature setting value, and sends instructions to each device of the integrated energy system and the user's load device, and the local controller of each device adjusts the output to the instruction value; The user side is equipped with smart meters and temperature measurement equipment to send the user's load and temperature value to the control center of the integrated energy system. The integrated energy system can directly provide users with cold, heat, electricity, gas and other energy. Compared with traditional energy systems, the integrated energy system can improve the total social welfare and improve energy utilization efficiency.

[0090] PMV and PPD: The PMV (Predicted Mean Vote) index takes into account environmental factors and human factors. Environmental factors include air temperature, average radiant temperature, relative humidity, and air velocity; human factors include metabolism and clothing thermal resistance. The PPD (Predicted Percentage Of Dissatisfied) index represents the predicted percentage of user comfort dissatisfaction.

[0091] Example

[0092] An integrated energy system optimization method taking into account user dissatisfaction, such as Figure 1 As shown, the following steps are included:

[0093] (101) Obtaining the operating parameters and status information of the integrated energy system units and the actual load demand information of the users; the operating parameters and status information of the units include the operating efficiency and rated power of the energy conversion equipment, the rated capacity, charging and discharging power, and storage status of the energy storage equipment; the user load demand information includes the user's cold, hot, and electric energy demand information.

[0094] Figure 2 This is a schematic diagram of the integrated energy system architecture. The industrial park integrated energy system transmits energy flow to users, and users transmit energy flow to the corresponding energy demand production line. At the same time, the user production line sensor device sends the current demand information to the user, and the user collects and sends the information to the integrated energy system, which calculates and processes it, thereby achieving optimization of both the supply and demand of the integrated energy system and users.

[0095] (102) Establishing a comprehensive energy system unit equipment model based on the operating parameters and status information of the comprehensive energy system unit; the comprehensive energy system unit equipment model includes a combined heat and power unit model, a heat pump unit model, a photovoltaic power generation unit model, an electric refrigerator unit model, a HVAC system model, and an energy storage device model. Specifically including:

[0096] The combined cooling, heating and power unit model is:

[0097]

[0098] in, They represent the electrical output, heat output, and cooling output of the combined heat and power unit at time t, respectively. They represent the electricity conversion efficiency, heat conversion efficiency, and cooling conversion efficiency of the combined heat and power unit, respectively. Represents the natural gas consumption of the combined heating, cooling and power unit at time t.

[0099] The heat pump device model is:

[0100]

[0101] in, represents the heat output of the heat pump device at time t, η HP Indicates the heat conversion efficiency of the heat pump device, Represents the amount of electricity consumed by the heat pump device at time t.

[0102] The photovoltaic power generation device model is:

[0103]

[0104] in, represents the power generation of the photovoltaic power generation device at time t, η PVis the power generation efficiency of the photovoltaic power generation device, S is the area of ​​the photovoltaic power generation device, is the light intensity per unit area of ​​the photovoltaic power generation device at time t.

[0105] The electric refrigerator device model is:

[0106]

[0107] in, represents the cooling output of the electric refrigerator at time t, η ER represents the cold conversion efficiency of the electric refrigerator device, Represents the amount of electricity consumed by the electric refrigerator at time t.

[0108] The HVAC system model is:

[0109]

[0110]

[0111] in, represents the cooling output of the HVAC system at time t, η HVAC represents the cooling efficiency of the HVAC system, represents the power consumed by the HVAC system at time t, T0 represents the outdoor ambient temperature at the current moment, T represents the temperature setting value of the HVAC system at the current moment, and b1, b2, and b3 are the energy consumption parameters of the HVAC system.

[0112] The energy storage device model is:

[0113]

[0114] Among them, S(t) represents the energy storage state of the energy storage device at time t, Ω represents the total capacity of the energy storage device, σ ESS Represents the self-loss coefficient of the energy storage device, P ch (t), P dis (t) respectively represent the charging and discharging power of the energy storage device at time t, η ch , η dis They represent the charging and discharging efficiencies of the energy storage device respectively, σ represents the charging and discharging state variables of the energy storage device, σ=1 represents charging, and σ=0 represents discharging, which ensures that the energy storage device cannot be charged and discharged at the same time.

[0115] (103) Establish a multi-energy flow model for an integrated energy system; the multi-energy flow model includes electrical energy flow, thermal energy flow, cold energy flow, and gas energy flow. Its energy flow structure model is as follows: Figure 3 As shown, specifically including:

[0116] Optionally, in the multi-energy flow model of the integrated energy system,

[0117] Power flow:

[0118]

[0119] Heat flow:

[0120]

[0121] Cold Energy Flow:

[0122]

[0123]

[0124] Chi energy flow:

[0125]

[0126] Among them, P t represents the amount of electricity purchased by the integrated energy system from the external power grid at time t, represents the electrical output of the electrical energy storage system at time t, and They represent the discharge and charging power of the energy storage device at time t, respectively, i t represents the energy consumption of the energy user's electrical equipment i at time t, H t represents the amount of heat purchased by the integrated energy system from the external heat network at time t, represents the heat output of the thermal energy storage system at time t, and They represent the heat release and heat charging power of the thermal energy storage device at time t, represents the heat energy consumption of the heat-using equipment i of the energy user at time t, represents the cold output of the cold energy storage system at time t, and They represent the cooling power and charging power of the heat and cooling energy device at time t, represents the cooling energy consumption of cooling equipment i of energy user at time t, represents the ambient temperature equilibrium cooling energy consumption of energy user's production workshop i at time t, G t represents the amount of natural gas purchased by the integrated energy system from the external gas grid at time t, Represents the amount of natural gas consumed by the combined heat and power unit i at time t.

[0127] (104) A user dissatisfaction model is established based on the actual load demand information of the user; the user dissatisfaction model includes an energy user equipment production efficiency dissatisfaction model and a workshop worker thermal discomfort model, and the user structure model is as follows: Figure 4 Specifically including:

[0128] Optionally, the energy user equipment production efficiency dissatisfaction model is:

[0129]

[0130] in, represents the dissatisfaction of production equipment i at time t, θ represents the dissatisfaction coefficient, P i t represents the actual load power of production equipment i at time t, Represents the expected load power of production equipment i at time t.

[0131] Optionally, the workshop worker thermal discomfort model is:

[0132]

[0133]

[0134]

[0135]

[0136]

[0137] PPD(T i )=100-95exp(-0.03353PMV 4 (T i )-0.2179PMV 2 (T i )) (19)

[0138] Among them, M i represents the metabolic rate of human beings, W i Represents the mechanical power of the human body, Indicates the surface temperature of a person's clothes, f i cl It is the ratio of the surface area of ​​clothing to the exposed body surface area. represents the equivalent thermal resistance of the clothes, P i a Indicates the partial pressure of air vapor around the human body. represents the average indoor radiation temperature, represents the convective heat transfer coefficient, V i aIndicates relative air velocity.

[0139] (105) With the goal of minimizing the total system operating cost, establish an optimization target indicator problem; the total system operating cost includes user dissatisfaction cost, integrated energy system energy cost, and integrated energy system operation and maintenance cost. Specifically, it includes:

[0140] The user dissatisfaction cost function is:

[0141]

[0142] Among them, C Dis represents the total cost of user dissatisfaction, C IE and C PPD They represent the user's production efficiency dissatisfaction cost and the workshop worker's thermal discomfort cost respectively. K1 and K2 represent the dissatisfaction cost conversion coefficient. and They represent user dissatisfaction with production efficiency and thermal discomfort of workshop workers respectively.

[0143] Optionally, the optimization objective is to minimize the total operating cost of the system, and in establishing the optimization objective indicator problem,

[0144] Daily operating costs of the integrated energy system:

[0145] C DOC =C Enegy +C OM (twenty one)

[0146] Energy costs of comprehensive energy system:

[0147]

[0148] Operation and maintenance costs of integrated energy system:

[0149]

[0150] Integrated energy system optimization problem:

[0151]

[0152] Among them, C Enegy , C OM Respectively represent the energy cost and operation and maintenance cost of the comprehensive energy system, C E , C H , C G Represent the electricity cost, heat cost, and natural gas cost respectively, P t , H t 、F t They represent the electricity, heat and gas purchases of the integrated energy system at time t, Respectively represent the unit prices of electricity, heat and gas at time t, It is uniformly expressed as the operating power of device i at time t, represents the operation and maintenance cost per unit operating power of equipment i, τ is the trade-off factor between the operation cost of the integrated energy system and the user dissatisfaction cost, Respectively represent the minimum and maximum operating power of device i, S min , S max Respectively represent the minimum and maximum energy storage states of the energy storage device, S L , S T Respectively represent the initial and final energy storage states of the energy storage device in an operation cycle, P ch,max , P dis,max They respectively represent the maximum charging and discharging power of the energy storage device.

[0153] (106) Solve the optimization problem and obtain the user load demand, HVAC system temperature setting value and the output of each device in the integrated energy system.

[0154] An integrated energy system optimization system taking into account user dissatisfaction, such as Figure 5 As shown, including:

[0155] The data acquisition module 201 is used to obtain the operating parameters and status information of the integrated energy system units and the actual load demand information of the users.

[0156] The energy equipment modules 202 of the comprehensive energy system are used to establish the equipment model of the comprehensive energy system unit; the equipment model of the comprehensive energy system unit includes a combined heat and power unit model, a heat pump unit model, a photovoltaic power generation unit model, an electric refrigerator unit model, a HVAC system model, and an energy storage device model.

[0157] The multi-energy flow model establishment module 203 is used to establish a multi-energy flow model of the integrated energy system; the multi-energy flow model includes electrical energy flow, thermal energy flow, cold energy flow and gas energy flow.

[0158] The optimization problem module 205 is used to establish the optimization target indicator problem. The total system operation cost includes the user dissatisfaction cost, the energy cost of the comprehensive energy system and the operation and maintenance cost of the comprehensive energy system.

[0159] The optimization module 206 is used to solve the optimization problem and obtain the user load demand, the HVAC system temperature setting value and the output of each device in the integrated energy system.

[0160] The user dissatisfaction and integrated energy system optimization scheduling system of this embodiment can reduce the total cost of users while improving the total social welfare and energy utilization efficiency, and reduce user dissatisfaction and energy consumption peak and valley differences, thereby ensuring the stability of the integrated energy system.

[0161] As for the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0162] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A comprehensive energy system optimization method taking into account user dissatisfaction, characterized in that The following steps are involved: (101) obtaining operating parameters and status information of the integrated energy system units and actual load demand information of users; (102) Establishing a comprehensive energy system unit equipment model based on the operating parameters and status information of the comprehensive energy system unit; the comprehensive energy system unit equipment model includes a combined heat and power unit device model, a heat pump device model, a photovoltaic power generation device model, an electric refrigerator device model, a HVAC system model, and an energy storage device model; the step (102) establishing a comprehensive energy system unit equipment model based on the operating parameters and status information of the comprehensive energy system unit specifically includes: The combined cooling, heating and power unit model is: in, They represent the electrical output, heat output, and cooling output of the combined heat and power unit at time t, respectively. They represent the electricity conversion efficiency, heat conversion efficiency, and cooling conversion efficiency of the combined heat and power unit, represents the natural gas consumption of the combined cooling, heating and power unit at time t; The heat pump device model is: in, represents the heat output of the heat pump device at time t, η HP Indicates the heat conversion efficiency of the heat pump device, represents the amount of electricity consumed by the heat pump device at time t; The photovoltaic power generation device model is: in, represents the power generation of the photovoltaic power generation device at time t, η PV is the power generation efficiency of the photovoltaic power generation device, S is the area of ​​the photovoltaic power generation device, is the light intensity per unit area of ​​the photovoltaic power generation device at time t; The electric refrigerator device model is: in, represents the cooling output of the electric refrigerator at time t, η ER represents the cold conversion efficiency of the electric refrigerator device, represents the amount of electricity consumed by the electric refrigerator at time t; The HVAC system model is: in, represents the cooling output of the HVAC system at time t, η HVAC represents the cooling efficiency of the HVAC system, represents the power consumed by the HVAC system at time t, T0 represents the outdoor ambient temperature at the current time, T represents the temperature setting value of the HVAC system at the current time, and b1, b2, and b3 are the energy consumption parameters of the HVAC system; The energy storage device model is: Among them, S(t) represents the energy storage state of the energy storage device at time t, Ω represents the total capacity of the energy storage device, σ ESS Represents the self-loss coefficient of the energy storage device, P ch (t), P dis (t) respectively represent the charging and discharging power of the energy storage device at time t, η ch , η dis They represent the charging and discharging efficiencies of the energy storage device, σ represents the charging and discharging state variables of the energy storage device, σ = 1 represents charging, and σ = 0 represents discharging, which ensures that the energy storage device cannot be charged and discharged at the same time; (103) establishing a multi-energy flow model of the integrated energy system according to the integrated energy system unit equipment model; the multi-energy flow model of the integrated energy system includes electric energy flow, heat energy flow, cold energy flow and gas energy flow models; the step (103) establishing the multi-energy flow model of the integrated energy system according to the integrated energy system unit equipment model specifically includes: In the multi-energy flow model of the integrated energy system, Power flow: Heat flow: Cold Energy Flow: Chi energy flow: Among them, P t represents the amount of electricity purchased by the integrated energy system from the external power grid at time t, represents the electrical output of the electrical energy storage system at time t, and They represent the discharge and charging power of the energy storage device at time t, represents the energy consumption of the energy user's electrical equipment i at time t, H t represents the amount of heat purchased by the integrated energy system from the external heat network at time t, represents the heat output of the thermal energy storage system at time t, and They represent the heat release and heat charging power of the thermal energy storage device at time t, represents the heat energy consumption of the heat-using equipment i of the energy user at time t, represents the cold output of the cold energy storage system at time t, and They represent the cooling power and charging power of the heat and cooling energy device at time t, represents the cooling energy consumption of cooling equipment i of energy user at time t, represents the ambient temperature equilibrium cooling energy consumption of energy user's production workshop i at time t, G t represents the amount of natural gas purchased by the integrated energy system from the external gas grid at time t, represents the amount of natural gas consumed by the combined cooling, heating and power unit i at time t; (104) Establishing a user dissatisfaction model based on the user's actual load demand information; the user dissatisfaction model includes an energy user equipment production efficiency dissatisfaction model and a workshop worker thermal discomfort model; the step (104) establishing a user dissatisfaction model based on the user's actual load demand information specifically includes: The energy user equipment production efficiency dissatisfaction model is: in, represents the dissatisfaction of production equipment i at time t, θ represents the dissatisfaction coefficient, represents the actual load power of production equipment i at time t, represents the expected load power of production equipment i at time t; The thermal discomfort model of workshop workers is: PPD(T i )=100-95exp(-0.03353PMV 4 (T i )-0.2179PMV 2 (T i ))(19) Among them, M i represents the metabolic rate of human beings, W i Represents the mechanical power of the human body, Indicates the surface temperature of a person's clothes. It is the ratio of the surface area of ​​clothing to the exposed body surface area. represents the equivalent thermal resistance of wearing clothes, Indicates the partial pressure of air vapor around the human body. represents the average indoor radiation temperature, represents the convective heat transfer coefficient, Indicates relative air velocity; (105) establishing an optimization target indicator problem based on the integrated energy system unit equipment model, the user's actual load demand information, and the user dissatisfaction model with the goal of minimizing the total system operating cost; (106) The integrated energy system and user load are optimized according to the optimization target indicator problem to obtain user load demand, HVAC system temperature setting value and output of each device in the integrated energy system.

2. The method for optimizing an integrated energy system taking into account user dissatisfaction according to claim 1, characterized in that: The step (105) establishes an optimization target indicator problem based on the integrated energy system unit equipment model, the user's actual load demand information and the user dissatisfaction model, with the goal of minimizing the total system operating cost. The total system operating cost includes the user dissatisfaction cost, the integrated energy system energy cost and the integrated energy system operation and maintenance cost, specifically including: The user dissatisfaction cost function is: Among them, C Dis represents the total cost of user dissatisfaction, C IE and C PPD They represent the user's production efficiency dissatisfaction cost and the workshop worker's thermal discomfort cost respectively. K1 and K2 represent the dissatisfaction cost conversion coefficient. and They represent user dissatisfaction with production efficiency and thermal discomfort of workshop workers respectively; In the problem of establishing the optimization target index with the goal of minimizing the total operating cost of the system, Daily operating costs of the integrated energy system: C DOC =C Enegy +C OM (21) Energy costs of comprehensive energy system: Operation and maintenance costs of integrated energy system: Integrated energy system optimization problem: Among them, C Enegy , C OM Respectively represent the energy cost and operation and maintenance cost of the comprehensive energy system, C E , C H , C G Represent the electricity cost, heat cost, and natural gas cost respectively, P t , H t 、F t They represent the electricity, heat and gas purchases of the integrated energy system at time t, Respectively represent the unit prices of electricity, heat and gas at time t, It is uniformly expressed as the operating power of device i at time t, represents the operation and maintenance cost per unit operating power of equipment i, τ is the trade-off factor between the operation cost of the integrated energy system and the user dissatisfaction cost, Respectively represent the minimum and maximum operating power of device i, S min , S max Respectively represent the minimum and maximum energy storage states of the energy storage device, S L , S T Respectively represent the initial and final energy storage states of the energy storage device in an operation cycle, P ch,max , P dis,max They respectively represent the maximum charging and discharging power of the energy storage device.

3. A system for the comprehensive energy system optimization method taking into account user dissatisfaction as claimed in any one of claims 1 or 2, characterized in that include: A data acquisition module (201) is used to obtain operating parameters and status information of the integrated energy system units and actual load demand information of users; The energy equipment modules (202) of the comprehensive energy system are used to establish the equipment model of the unit of the comprehensive energy system; A multi-energy flow model building module (203) is used to build a multi-energy flow model of a comprehensive energy system; A user dissatisfaction model building module (204), used to build a user dissatisfaction model; An optimization problem module (205) is used to establish an optimization target indicator problem; The optimization module (206) is used to solve the optimization problem and obtain the user load demand, the HVAC system temperature setting value and the output of each device in the integrated energy system.

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