Rail transit environment control system dynamic simulation method, device and equipment and storage medium

Abstract

Embodiments of the present application disclose a rail transit environment control system dynamic simulation method, device, equipment and storage medium. The technical scheme provided by the embodiments of the present application can input preset simulation input into a preset simulation model for simulation processing, output at least one set of device operating state parameters when an iteration termination condition is met, the preset simulation input includes a preset air conditioning unit inlet water temperature and a preset water chiller condenser inlet water temperature, perform energy consumption calculation processing on the output at least one set of device operating state parameters, obtain a set of device operating state parameters corresponding to the lowest energy consumption as optimal control parameters, and output the optimal control parameters to control the corresponding environment control system to run through the optimal control parameters, thereby solving the technical problem of poor energy saving effect of the rail transit environment control system, reducing the energy consumption of the rail transit environment control system, and improving the energy saving effect of the rail transit environment control system.

Description

Technical Field

[0001] This application relates to the field of rail transit technology, and in particular to a dynamic simulation method, apparatus, equipment and storage medium for rail transit environmental control systems. Background Technology

[0002] Currently, with the country's increasing emphasis on energy conservation, many cities are paying more and more attention to the energy-saving capabilities of their air conditioning and environmental control systems in their rail transit, commercial buildings, and factories.

[0003] The environmental control system of rail transit has a large number of devices, including chillers, chilled water pumps, cooling water pumps, cooling towers and air conditioning units. The operating parameters (temperature, flow rate and pressure difference, etc.) of different environmental control system devices affect each other. At the same time, the environmental control system is also affected by a variety of factors such as personnel changes, seasonal changes, changes in internal and external environmental parameters and changes in load demand.

[0004] Real-time optimization control of rail transit environmental control systems is a complex nonlinear programming problem. Its unique challenges lie in its large scale, multi-dimensionality, strong coupling, large time delays, and multiple objectives. It requires repeated execution over a certain time period and demands high algorithm speed. Furthermore, due to the specific nature of rail transit construction, the centralized air conditioning equipment at stations is currently a one-time investment, with its capacity corresponding to long-term peak air conditioning load values. However, during the initial and near-term operational phases, passenger flow is lower than long-term forecasts, resulting in a prolonged period of low-load operation.

[0005] Current rail transit environmental control systems are control systems composed of individual control units combined together, limited to the control and optimization of individual devices. Therefore, when controlling the environmental control system, drawbacks include system oscillation, lag, and mutual interference between the control logic of various devices. Furthermore, the lack of dynamic simulation calculations for the entire rail transit environmental control system prevents optimal control, resulting in poor energy-saving performance. Summary of the Invention

[0006] This application provides a dynamic simulation method, device, equipment, and storage medium for rail transit environmental control systems, which can solve the technical problem of poor energy-saving effect of rail transit environmental control systems, reduce the energy consumption of rail transit environmental control systems, and improve the energy-saving effect of rail transit environmental control systems.

[0007] In a first aspect, embodiments of this application provide a dynamic simulation method for a rail transit environmental control system, comprising:

[0008] The preset simulation input quantities are input into the preset simulation model for simulation processing until the iteration termination condition is met, and at least one set of equipment operating status parameters are output. The preset simulation input quantities include the preset air conditioning unit inlet water temperature and the preset chiller unit condenser inlet water temperature.

[0009] The energy consumption of the at least one set of equipment operating status parameters is calculated and processed to obtain the set of equipment operating status parameters with the lowest corresponding energy consumption as the optimal control parameters. The optimal control parameters are then output to control the operation of the corresponding environmental control system.

[0010] Furthermore, the preset simulation model includes an air conditioning unit simulation model, a chiller unit simulation model, and a cooling tower simulation model;

[0011] The process involves inputting preset simulation input quantities into a preset simulation model for simulation processing until the iteration termination condition is met, at least one set of equipment operating status parameters is output, including:

[0012] The preset inlet water temperature of the air conditioning unit is input into the simulation model of the air conditioning unit for simulation processing to obtain the outlet water temperature of the air conditioning unit.

[0013] The preset condenser inlet temperature and evaporator inlet temperature of the chiller unit are input into the chiller unit simulation model for simulation processing to obtain the evaporator outlet temperature and condenser outlet temperature of the chiller unit. The evaporator inlet temperature of the chiller unit is set to be the same as the outlet temperature of the air conditioning unit.

[0014] The cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing to obtain the cooling tower outlet water temperature. The cooling tower inlet water temperature is set to be the same as the chiller unit condenser outlet water temperature.

[0015] If the outlet water temperature of the chiller evaporator and the outlet water temperature of the cooling tower meet the iteration termination condition, then the corresponding equipment operating status parameters are output.

[0016] If the evaporator outlet temperature of the chiller unit and the cooling tower outlet temperature do not meet the iteration termination condition, the inlet water temperature of the air conditioning unit and the inlet water temperature of the chiller unit are adjusted and the simulation is repeated until the evaporator outlet temperature of the chiller unit and the cooling tower outlet temperature obtained from the simulation meet the iteration termination condition, and then the corresponding equipment operating status parameters are output.

[0017] Furthermore, if the evaporator outlet temperature of the chiller unit and the cooling tower outlet temperature do not meet the iteration termination condition, the inlet water temperature of the air conditioning unit and the condenser inlet water temperature of the chiller unit are adjusted, and the simulation process is repeated until the evaporator outlet temperature of the chiller unit and the cooling tower outlet temperature obtained from the simulation process meet the iteration termination condition. Then, the corresponding equipment operating status parameters are output, including:

[0018] If the evaporator outlet temperature of the chiller unit does not meet the first iteration termination condition, then the inlet water temperature of the air conditioning unit is adjusted to be the same as the evaporator outlet temperature of the chiller unit, and the adjusted inlet water temperature of the air conditioning unit is input into the air conditioning unit simulation model for re-simulation processing to obtain the outlet water temperature of the air conditioning unit. The inlet water temperature of the chiller unit evaporator is adjusted to be the same as the outlet water temperature of the air conditioning unit, and the adjusted inlet water temperature of the chiller unit evaporator is input into the chiller unit simulation model for simulation processing until the chiller unit evaporator outlet temperature obtained by simulation processing meets the first iteration termination condition, and the corresponding target chiller unit evaporator outlet temperature is output.

[0019] If the evaporator outlet water temperature of the chiller unit meets the first iteration termination condition, the cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing to obtain the cooling tower outlet water temperature. The cooling tower inlet water temperature is set to be the same as the condenser outlet water temperature of the target chiller unit.

[0020] If the cooling tower outlet water temperature does not meet the second iteration termination condition, the chiller unit condenser inlet water temperature is adjusted to be the same as the cooling tower outlet water temperature. The adjusted chiller unit condenser inlet water temperature is then input into the chiller unit simulation model for re-simulation processing to obtain the chiller unit evaporator outlet water temperature and chiller unit condenser outlet water temperature. The cooling tower inlet water temperature is then adjusted to be the same as the chiller unit condenser outlet water temperature, and the adjusted cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing. This process continues until the cooling tower outlet water temperature obtained from the simulation processing meets the second iteration termination condition, at which point the corresponding equipment operating status parameters are output.

[0021] Furthermore, the first iteration termination condition is that the difference between the outlet water temperature of the chiller evaporator and the inlet water temperature of the air conditioning unit is less than or equal to a first threshold.

[0022] If the evaporator outlet temperature of the chiller unit does not meet the first iteration termination condition, then the inlet water temperature of the air conditioning unit is adjusted to be the same as the evaporator outlet temperature of the chiller unit, and the adjusted inlet water temperature of the air conditioning unit is input into the air conditioning unit simulation model for re-simulation processing to obtain the outlet water temperature of the air conditioning unit. The evaporator inlet temperature of the chiller unit is then adjusted to be the same as the outlet water temperature of the air conditioning unit, and the adjusted evaporator inlet temperature of the chiller unit is input into the chiller unit simulation model for simulation processing until the evaporator outlet temperature of the chiller unit obtained from the simulation processing meets the first iteration termination condition. Finally, the corresponding target evaporator outlet temperature of the chiller unit is output, including:

[0023] If the difference between the outlet water temperature of the chiller evaporator and the inlet water temperature of the air conditioning unit does not meet the requirement of being less than or equal to the first threshold, then the inlet water temperature of the air conditioning unit is adjusted to be the same as the outlet water temperature of the chiller evaporator.

[0024] The adjusted inlet water temperature of the air conditioning unit is input into the simulation model of the air conditioning unit for re-simulation processing to obtain the outlet water temperature of the air conditioning unit.

[0025] The inlet water temperature of the chiller evaporator is adjusted to be the same as the outlet water temperature of the air conditioning unit. The adjusted inlet water temperature of the chiller evaporator is then input into the chiller simulation model for simulation processing. The simulation continues until the difference between the outlet water temperature of the chiller evaporator and the inlet water temperature of the air conditioning unit is less than or equal to the first threshold. At this point, the corresponding target outlet water temperature of the chiller evaporator is output.

[0026] Furthermore, the second iteration termination condition is that the difference between the cooling tower outlet water temperature and the chiller unit condenser inlet water temperature is less than or equal to the second threshold.

[0027] If the cooling tower outlet water temperature does not meet the second iteration termination condition, the chiller unit condenser inlet water temperature is adjusted to be the same as the cooling tower outlet water temperature. The adjusted chiller unit condenser inlet water temperature is then input into the chiller unit simulation model for re-simulation processing to obtain the chiller unit evaporator outlet water temperature and chiller unit condenser outlet water temperature. The cooling tower inlet water temperature is then adjusted to be the same as the chiller unit condenser outlet water temperature, and the adjusted cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing. This process continues until the cooling tower outlet water temperature obtained from the simulation processing meets the second iteration termination condition. At this point, the corresponding equipment operating status parameters are output, including:

[0028] If the difference between the cooling tower outlet water temperature and the chiller unit condenser inlet water temperature does not meet the requirement of being less than or equal to the second threshold, then the chiller unit condenser inlet water temperature is adjusted to be the same as the cooling tower outlet water temperature.

[0029] The adjusted condenser inlet water temperature of the chiller unit is input into the chiller unit simulation model and re-simulated to obtain the evaporator outlet water temperature and the condenser outlet water temperature of the chiller unit.

[0030] The cooling tower inlet water temperature is adjusted to be the same as the chiller unit condenser outlet water temperature, and the adjusted cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing. When the difference between the simulated cooling tower outlet water temperature and the chiller unit condenser inlet water temperature is less than or equal to the second threshold, the corresponding equipment operating status parameters are output.

[0031] Furthermore, the preset simulation input quantities also include preset air conditioning unit inlet and outlet water flow rates and preset chiller unit condenser inlet and outlet water flow rates.

[0032] The process involves inputting preset simulation input quantities into a preset simulation model for simulation processing until the iteration termination condition is met, at least one set of equipment operating status parameters is output, including:

[0033] The preset air conditioning unit inlet water temperature, preset air conditioning unit inlet and outlet water flow rates, preset chiller unit condenser inlet water temperature, and preset chiller unit condenser inlet and outlet water flow rates are input into a preset simulation model for simulation processing. When the iteration conditions are met, at least one set of equipment status parameters is output. The equipment status parameters include the target air conditioning unit outlet water temperature, target air conditioning unit inlet water temperature, target air conditioning unit inlet and outlet water flow rates, target chiller unit evaporator outlet water temperature, target chiller unit condenser outlet water temperature, target chiller unit condenser inlet water temperature, target chiller unit condenser inlet and outlet water flow rates, target chiller room power consumption, and environmental control system power consumption.

[0034] Furthermore, the preset air conditioning unit inlet water temperature, the preset air conditioning unit inlet and outlet water flow rates, the preset chiller unit condenser inlet water temperature, and the preset chiller unit condenser inlet and outlet water flow rates are input into a preset simulation model for simulation processing until the iteration conditions are met, at least one set of equipment status parameters is output, including:

[0035] The preset air conditioning unit inlet water temperature and the preset air conditioning unit inlet and outlet water flow rate are input into the air conditioning unit simulation model for simulation processing until the first iteration termination condition is met, and the target air conditioning unit outlet water temperature and the target air conditioning unit power consumption are obtained. The simulation input quantities corresponding to the target air conditioning unit outlet water temperature are the target air conditioning unit inlet water temperature and the target air conditioning unit inlet and outlet water flow rate.

[0036] The preset chiller condenser inlet water temperature and the preset chiller condenser inlet and outlet water flow rates are input into the chiller simulation model for simulation processing until the second iteration termination condition is met, and the target chiller evaporator outlet water temperature, target chiller condenser outlet water temperature, and target chiller power consumption are obtained. The simulation inputs corresponding to the target chiller evaporator outlet water temperature and target chiller condenser outlet water temperature are the target chiller condenser inlet water temperature and target chiller condenser inlet and outlet water flow rates.

[0037] The cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing until the second iteration termination condition is met, and the target cooling tower outlet water temperature and target fan power consumption are obtained. The cooling tower inlet water temperature is set to be the same as the chiller unit condenser outlet water temperature.

[0038] The power consumption of the target air conditioning unit and the power consumption of the target chiller room are summed to obtain the corresponding power consumption of the environmental control system. The power consumption of the target chiller room includes the power consumption of the target chiller unit and the power consumption of the target fan.

[0039] Output at least one set of equipment status parameters including the target air conditioning unit outlet water temperature, target air conditioning unit inlet water temperature, target air conditioning unit inlet and outlet water flow rate, target chiller evaporator outlet water temperature, target chiller condenser outlet water temperature, target chiller condenser inlet water temperature, target chiller condenser inlet and outlet water flow rate, target chiller room power consumption, and environmental control system power consumption.

[0040] In a second aspect, embodiments of this application provide a dynamic simulation device for a rail transit environmental control system, comprising:

[0041] The simulation unit is used to input preset simulation input quantities into a preset simulation model for simulation processing until the iteration termination condition is met, and output at least one set of equipment operating status parameters. The preset simulation input quantities include preset air conditioning unit inlet water temperature and preset chiller unit condenser inlet water temperature.

[0042] The optimal control parameter output unit is used to perform energy consumption calculation processing on the output at least one set of equipment operating status parameters, obtain the set of equipment operating status parameters with the lowest corresponding energy consumption as the optimal control parameters, and output the optimal control parameters so as to control the operation of the corresponding environmental control system through the optimal control parameters.

[0043] Furthermore, the preset simulation model includes an air conditioning unit simulation model, a chiller unit simulation model, and a cooling tower simulation model;

[0044] The simulation unit is also used to input the preset air conditioning unit inlet water temperature into the air conditioning unit simulation model for simulation processing to obtain the air conditioning unit outlet water temperature.

[0045] The preset condenser inlet temperature and evaporator inlet temperature of the chiller unit are input into the chiller unit simulation model for simulation processing to obtain the evaporator outlet temperature and condenser outlet temperature of the chiller unit. The evaporator inlet temperature of the chiller unit is set to be the same as the outlet temperature of the air conditioning unit.

[0046] The cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing to obtain the cooling tower outlet water temperature. The cooling tower inlet water temperature is set to be the same as the chiller unit condenser outlet water temperature.

[0047] If the outlet water temperature of the chiller evaporator and the outlet water temperature of the cooling tower meet the iteration termination condition, then the corresponding equipment operating status parameters are output.

[0048] If the evaporator outlet temperature of the chiller unit and the cooling tower outlet temperature do not meet the iteration termination condition, the inlet water temperature of the air conditioning unit and the inlet water temperature of the chiller unit are adjusted and the simulation is repeated until the evaporator outlet temperature of the chiller unit and the cooling tower outlet temperature obtained from the simulation meet the iteration termination condition, and then the corresponding equipment operating status parameters are output.

[0049] Furthermore, the simulation unit is also used to adjust the inlet water temperature of the air conditioning unit to be the same as the outlet water temperature of the air conditioning unit evaporator if the outlet water temperature of the chiller unit does not meet the first iteration termination condition, and input the adjusted inlet water temperature of the air conditioning unit into the air conditioning unit simulation model to re-simulate and obtain the outlet water temperature of the air conditioning unit. The unit then adjusts the inlet water temperature of the chiller unit evaporator to be the same as the outlet water temperature of the air conditioning unit, and inputs the adjusted inlet water temperature of the chiller unit evaporator into the chiller unit simulation model for simulation processing until the outlet water temperature of the chiller unit evaporator obtained from the simulation processing meets the first iteration termination condition, and outputs the corresponding target outlet water temperature of the chiller unit evaporator.

[0050] If the evaporator outlet water temperature of the chiller unit meets the first iteration termination condition, the cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing to obtain the cooling tower outlet water temperature. The cooling tower inlet water temperature is set to be the same as the condenser outlet water temperature of the target chiller unit.

[0051] If the cooling tower outlet water temperature does not meet the second iteration termination condition, the chiller unit condenser inlet water temperature is adjusted to be the same as the cooling tower outlet water temperature. The adjusted chiller unit condenser inlet water temperature is then input into the chiller unit simulation model for re-simulation processing to obtain the chiller unit evaporator outlet water temperature and chiller unit condenser outlet water temperature. The cooling tower inlet water temperature is then adjusted to be the same as the chiller unit condenser outlet water temperature, and the adjusted cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing. This process continues until the cooling tower outlet water temperature obtained from the simulation processing meets the second iteration termination condition, at which point the corresponding equipment operating status parameters are output.

[0052] Furthermore, the first iteration termination condition is that the difference between the outlet water temperature of the chiller evaporator and the inlet water temperature of the air conditioning unit is less than or equal to a first threshold.

[0053] The simulation unit is also used to adjust the inlet temperature of the air conditioning unit to be the same as the outlet temperature of the evaporator of the chiller unit if the difference between the outlet temperature of the chiller unit and the inlet temperature of the air conditioning unit does not meet the requirement of being less than or equal to the first threshold.

[0054] The adjusted inlet water temperature of the air conditioning unit is input into the simulation model of the air conditioning unit for re-simulation processing to obtain the outlet water temperature of the air conditioning unit.

[0055] The inlet water temperature of the chiller evaporator is adjusted to be the same as the outlet water temperature of the air conditioning unit. The adjusted inlet water temperature of the chiller evaporator is then input into the chiller simulation model for simulation processing. The simulation continues until the difference between the outlet water temperature of the chiller evaporator and the inlet water temperature of the air conditioning unit is less than or equal to the first threshold. At this point, the corresponding target outlet water temperature of the chiller evaporator is output.

[0056] Furthermore, the second iteration termination condition is that the difference between the cooling tower outlet water temperature and the chiller unit condenser inlet water temperature is less than or equal to the second threshold.

[0057] The simulation unit is also used to adjust the condenser inlet temperature of the chiller unit to be the same as the cooling tower outlet temperature if the difference between the cooling tower outlet water temperature and the chiller unit condenser inlet water temperature does not meet the requirement of being less than or equal to the second threshold.

[0058] The adjusted condenser inlet water temperature of the chiller unit is input into the chiller unit simulation model and re-simulated to obtain the evaporator outlet water temperature and the condenser outlet water temperature of the chiller unit.

[0059] The cooling tower inlet water temperature is adjusted to be the same as the chiller unit condenser outlet water temperature, and the adjusted cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing. When the difference between the simulated cooling tower outlet water temperature and the chiller unit condenser inlet water temperature is less than or equal to the second threshold, the corresponding equipment operating status parameters are output.

[0060] Furthermore, the preset simulation input quantities also include preset air conditioning unit inlet and outlet water flow rates and preset chiller unit condenser inlet and outlet water flow rates.

[0061] The simulation unit is further configured to input the preset air conditioning unit inlet water temperature, the preset air conditioning unit inlet and outlet water flow rates, the preset chiller unit condenser inlet water temperature, and the preset chiller unit condenser inlet and outlet water flow rates into a preset simulation model for simulation processing until the iteration conditions are met, and output at least one set of equipment status parameters. The equipment status parameters include the target air conditioning unit outlet water temperature, the target air conditioning unit inlet water temperature, the target air conditioning unit inlet and outlet water flow rates, the target chiller unit evaporator outlet water temperature, the target chiller unit condenser outlet water temperature, the target chiller unit condenser inlet water temperature, the target chiller unit condenser inlet and outlet water flow rates, the target chiller room power consumption, and the environmental control system power consumption.

[0062] Furthermore, the simulation unit is also used to input the preset air conditioning unit inlet water temperature and the preset air conditioning unit inlet and outlet water flow rate into the air conditioning unit simulation model for simulation processing until the first iteration condition is met, and then obtain the target air conditioning unit outlet water temperature and the target air conditioning unit power consumption. The simulation input quantity corresponding to the target air conditioning unit outlet water temperature is the target air conditioning unit inlet water temperature and the target air conditioning unit inlet and outlet water flow rate.

[0063] The preset chiller condenser inlet water temperature and the preset chiller condenser inlet and outlet water flow rates are input into the chiller simulation model for simulation processing until the second iteration condition is met, and the target chiller evaporator outlet water temperature, target chiller condenser outlet water temperature, and target chiller power consumption are obtained. The simulation inputs corresponding to the target chiller evaporator outlet water temperature and target chiller condenser outlet water temperature are the target chiller condenser inlet water temperature and target chiller condenser inlet and outlet water flow rates.

[0064] The cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing until the second iteration termination condition is met, and the target cooling tower outlet water temperature and target fan power consumption are obtained. The cooling tower inlet water temperature is set to be the same as the chiller unit condenser outlet water temperature.

[0065] The power consumption of the target air conditioning unit and the power consumption of the target chiller room are summed to obtain the corresponding power consumption of the environmental control system. The power consumption of the target chiller room includes the power consumption of the target chiller unit and the power consumption of the target fan.

[0066] Output at least one set of equipment status parameters including the target air conditioning unit outlet water temperature, target air conditioning unit inlet water temperature, target air conditioning unit inlet and outlet water flow rate, target chiller evaporator outlet water temperature, target chiller condenser outlet water temperature, target chiller condenser inlet water temperature, target chiller condenser inlet and outlet water flow rate, target chiller room power consumption, and environmental control system power consumption.

[0067] In a third aspect, embodiments of this application provide a dynamic simulation device for a rail transit environmental control system, comprising:

[0068] Memory and one or more processors;

[0069] The memory is used to store one or more programs;

[0070] When the one or more programs are executed by the one or more processors, the one or more processors implement the dynamic simulation method for rail transit environmental control systems as described in the first aspect.

[0071] In a fourth aspect, embodiments of this application provide a storage medium for storing computer-executable instructions, which, when executed by a computer processor, are used to perform the dynamic simulation method for a rail transit environmental control system as described in the first aspect.

[0072] This embodiment of the application performs simulation processing by inputting preset simulation input quantities into a preset simulation model. The preset simulation input quantities include preset inlet water temperatures for air conditioning units and preset condenser inlet water temperatures for chiller units. Until the iteration termination condition is met, at least one set of equipment operating status parameters is output. Energy consumption calculations are then performed on the output at least one set of equipment operating status parameters to obtain the set of equipment operating status parameters with the lowest energy consumption as the optimal control parameters. The optimal control parameters are then output to control the operation of the corresponding environmental control system. Using the above technical means, simulation processing can be performed through a preset simulation model until the iteration termination condition is met, outputting equipment operating status parameters. This avoids the problem of poor energy-saving performance in rail transit environmental control systems, achieves global optimization control of rail transit environmental control systems, reduces energy consumption, and improves the energy-saving effect of rail transit environmental control systems. Furthermore, by performing energy consumption calculations on the output at least one set of equipment operating status parameters to obtain the set of equipment operating status parameters with the lowest energy consumption as the optimal control parameters, the energy-saving effect of the rail transit environmental control system is further improved. Attached Figure Description

[0073] Figure 1 This is a flowchart of a dynamic simulation method for a rail transit environmental control system provided in an embodiment of this application;

[0074] Figure 2 This is a flowchart of another dynamic simulation method for rail transit environmental control system provided in the embodiments of this application;

[0075] Figure 3 This is a schematic diagram of the structure of a dynamic simulation device for a rail transit environmental control system provided in an embodiment of this application;

[0076] Figure 4 This is a schematic diagram of the structure of a dynamic simulation device for a rail transit environmental control system provided in an embodiment of this application. Detailed Implementation

[0077] To make the objectives, technical solutions, and advantages of this application clearer, specific embodiments of this application will be described in further detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining this application and not for limiting it. It should also be noted that, for ease of description, only the parts relevant to this application are shown in the drawings, not all of them. Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe operations (or steps) as sequential processes, many of these operations can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but may also have additional steps not included in the drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0078] The dynamic simulation method, apparatus, equipment, and storage medium for rail transit environmental control systems provided in this application aim to achieve global optimization control of the rail transit environmental control system by performing simulation processing through a preset simulation model during environmental control, and outputting equipment operating status parameters when the iteration termination condition is met. This reduces the energy consumption of the rail transit environmental control system and improves its energy-saving effect. Furthermore, by performing energy consumption calculation processing on at least one set of output equipment operating status parameters, the set of equipment operating status parameters with the lowest energy consumption is obtained as the optimal control parameters to further improve the energy-saving effect of the rail transit environmental control system. Compared to traditional environmental control system control methods, which are typically a control system composed of individual control of each environmental control device, limited to the control and optimization of a single device, this limitation to the control and optimization of a single device results in drawbacks such as system oscillation, lag, and mutual influence between the control logics of various devices. Due to the lack of dynamic simulation calculation for the entire rail transit environmental control system, optimal control cannot be achieved, resulting in poor energy-saving performance of the rail transit environmental control system. Therefore, this application provides a dynamic simulation method for rail transit environmental control systems to solve the problem of poor energy-saving performance in existing rail transit environmental control systems.

[0079] Figure 1 A flowchart of a dynamic simulation method for a rail transit environmental control system provided in this application is given. The dynamic simulation method for a rail transit environmental control system provided in this embodiment can be executed by a dynamic simulation device for a rail transit environmental control system. This dynamic simulation device can be implemented through software and / or hardware. The device can consist of two or more physical entities, or it can consist of a single physical entity. Generally, the dynamic simulation device for a rail transit environmental control system can be a terminal device, such as a computer.

[0080] The following description uses computer equipment as the primary device for executing the dynamic simulation method of a rail transit environmental control system. (Refer to...) Figure 1 The dynamic simulation method for the rail transit environmental control system specifically includes:

[0081] S101. Input the preset simulation input quantities into the preset simulation model for simulation processing until the iteration termination condition is met, and output at least one set of equipment operating status parameters. The preset simulation input quantities include the preset air conditioning unit inlet water temperature and the preset chiller unit condenser inlet water temperature.

[0082] Rail transit can be understood as a type of transportation vehicle or system that requires operating vehicles to run on specific tracks, such as high-speed rail and subways. This application uses a subway as an example for explanation. The subway environmental control system (rail transit environmental control system) can be understood as a subway environmental control system, also known as a subway air conditioning and ventilation system. It mainly includes two parts: the first part is the tunnel ventilation system (when there are underground sections), and the second part is the station ventilation and air conditioning system. Subway environmental control system equipment includes chillers, chilled water pumps, cooling water pumps, cooling towers, and air conditioning units. Simulation processing can be understood as the simulation engine being responsible for sending predetermined tasks such as user input, action detection, and script description into the virtual world, and determining the actions that will occur in the virtual world. A simulation model can be understood as various models created to study the simulation object, such as the physical model of the simulated object or a mathematical model suitable for computational processing. The preset simulation model in this application embodiment is a mathematical model.

[0083] The preset simulation inputs include preset inlet water temperatures for the air conditioning unit and condenser inlet water temperatures for the chiller unit. These preset inputs are input into the preset simulation model for simulation processing until the iteration termination condition is met, at least one set of equipment operating status parameters is output. It should be noted that if the iteration termination condition is not met during simulation processing in the preset simulation model, the values ​​of the simulation inputs (air conditioning unit inlet water temperature and chiller unit condenser inlet water temperature) are adjusted and the simulation processing is repeated until the iteration termination condition is met.

[0084] In one embodiment, the preset simulation models include an air conditioning unit simulation model, a chiller unit simulation model, and a cooling tower simulation model. The model parameters of the air conditioning unit simulation model include equipment parameters and performance fitting curves. The air conditioning unit simulation model uses the air conditioning unit inlet air temperature, air conditioning unit inlet humidity, air conditioning unit inlet air volume, and air conditioning unit inlet water temperature as dynamic inputs to calculate equipment status such as the air conditioning unit supply air temperature, air conditioning unit supply air humidity, air conditioning unit outlet water temperature, and air conditioning unit fan energy consumption. Other equipment parameters of the air conditioning unit include rated chilled water flow rate and rated air volume. Its performance fitting curves include a supply air temperature fitting curve and a supply air humidity fitting curve. These two curves use the air volume ratio, chilled water flow ratio, chilled water inlet temperature, air conditioning unit inlet air temperature, and air conditioning unit inlet humidity as input variables, and output the supply air temperature and supply air humidity respectively.

[0085] The model parameters of the chiller simulation model include the chiller's equipment parameters and performance curves. Using the chiller's evaporator inlet water temperature, evaporator flow rate, condenser inlet water temperature, and condenser flow rate as dynamic input variables, the model can calculate the chiller's evaporator outlet water temperature, condenser outlet water temperature, power consumption, and coefficient of performance (COP). The performance curves of the chiller simulation model mainly include three types: a temperature-based cooling capacity correction curve, a temperature-based energy input to cooling output ratio correction curve, and a part-load ratio correction curve. The part-load ratio refers to the ratio between the actual cooling capacity output and the rated cooling capacity. The chiller's equipment parameters include its rated cooling capacity, rated COP, rated evaporator outlet water temperature, rated condenser outlet water temperature, rated evaporator flow rate, rated condenser flow rate, and minimum operating part-load rate.

[0086] The simulation model of a cooling tower includes equipment parameters and performance curves. Using cooling tower fan frequency, cooling tower inlet water temperature, cooling tower water flow rate, and outdoor wet-bulb temperature as dynamic inputs, it can calculate equipment status such as cooling tower outlet water temperature and fan power consumption. The equipment parameters of the cooling tower include the number of units, the minimum number of operational units, the rated cooling tower fan frequency, the rated condensate flow rate, the rated minimum water flow rate for each unit, and the rated maximum water flow rate for each unit. The cooling tower performance curves are empirically fitted curves, with variables including airflow ratio, flow rate ratio, inlet and outlet water temperature difference, and wet-bulb temperature.

[0087] In one embodiment, the preset simulation models include an air conditioning unit simulation model, a chiller unit simulation model, and a cooling tower simulation model. Preset inlet water temperatures for the air conditioning unit and chiller unit condenser are used. The preset inlet water temperatures for the air conditioning unit are input into the air conditioning unit simulation model for simulation processing to obtain the air conditioning unit outlet water temperature. The preset condenser inlet water temperature for the chiller unit is also used, and the evaporator inlet water temperature for the chiller unit is set to be the same as the air conditioning unit outlet water temperature. The preset condenser inlet water temperature and evaporator inlet water temperature for the chiller unit are input into the chiller unit simulation model for simulation processing to obtain the evaporator outlet water temperature and the condenser outlet water temperature for the chiller unit. The cooling tower inlet water temperature is set to be the same as the condenser outlet water temperature for the chiller unit, and the cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing to obtain the cooling tower outlet water temperature. If the chiller unit evaporator outlet water temperature and the cooling tower outlet water temperature meet the iteration termination condition, the corresponding equipment operating status parameters are output. If the chiller evaporator outlet temperature does not meet the first iteration termination condition, the air conditioning unit inlet water temperature and the chiller evaporator outlet water temperature are adjusted to be the same. The adjusted air conditioning unit inlet water temperature is then input into the air conditioning unit simulation model for re-simulation processing to obtain the air conditioning unit outlet water temperature. The chiller evaporator inlet water temperature is then adjusted to be the same as the air conditioning unit outlet water temperature, and the adjusted chiller evaporator inlet water temperature is input into the chiller unit simulation model for simulation processing. This process continues until the chiller evaporator outlet water temperature obtained from the simulation processing meets the first iteration termination condition, at which point the corresponding target chiller evaporator outlet water temperature is output. If the chiller evaporator outlet water temperature meets the first iteration termination condition, the cooling tower inlet water temperature is set to be the same as the chiller condenser outlet water temperature, and the cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing to obtain the cooling tower outlet water temperature. Determine if the cooling tower outlet water temperature meets the second iteration termination condition. If the cooling tower outlet water temperature does not meet the second iteration termination condition, adjust the chiller condenser inlet water temperature and the cooling tower outlet water temperature to be the same, and input the adjusted chiller condenser inlet water temperature into the chiller simulation model for re-simulation processing to obtain the chiller evaporator outlet water temperature and the chiller condenser outlet water temperature. Adjust the cooling tower inlet water temperature to be the same as the chiller condenser outlet water temperature, and input the adjusted cooling tower inlet water temperature into the cooling tower simulation model for simulation processing until the cooling tower outlet water temperature obtained from the simulation processing meets the second iteration termination condition, and then output the corresponding equipment operating status parameters.

[0088] In one embodiment, the first iteration termination condition is that the difference between the chiller evaporator outlet temperature and the air conditioning unit inlet temperature is less than or equal to a first threshold. The first threshold is, for example, 0.1°C. If the difference between the chiller evaporator outlet temperature and the air conditioning unit inlet temperature does not meet the first threshold, the air conditioning unit inlet temperature is adjusted to be the same as the chiller evaporator outlet temperature. The adjusted air conditioning unit inlet temperature is then input into the air conditioning unit simulation model for re-simulation processing to obtain the air conditioning unit outlet temperature. The chiller evaporator inlet temperature is then adjusted to be the same as the air conditioning unit outlet temperature, and the adjusted chiller evaporator inlet temperature is input into the chiller simulation model for simulation processing. This process continues until the difference between the chiller evaporator outlet temperature and the air conditioning unit inlet temperature obtained from the simulation processing meets the first threshold, at which point the corresponding target chiller evaporator outlet temperature is output.

[0089] In one embodiment, the second iteration termination condition is that the difference between the cooling tower outlet water temperature and the chiller unit condenser inlet water temperature is less than or equal to a second threshold. If the difference between the cooling tower outlet water temperature and the chiller unit condenser inlet water temperature does not meet the requirement of being less than or equal to the second threshold, the chiller unit condenser inlet water temperature is adjusted to be the same as the cooling tower outlet water temperature, and the adjusted chiller unit condenser inlet water temperature is input into the chiller unit simulation model for re-simulation processing to obtain the chiller unit evaporator outlet water temperature and the chiller unit condenser outlet water temperature. The cooling tower inlet water temperature is then adjusted to be the same as the chiller unit condenser outlet water temperature, and the adjusted cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing. This process continues until the difference between the cooling tower outlet water temperature and the chiller unit condenser inlet water temperature obtained from the simulation processing meets the requirement of being less than or equal to the second threshold, at which point the corresponding equipment operating status parameters are output. The equipment status includes the target air conditioning unit outlet water temperature, target air conditioning unit inlet water temperature, target air conditioning unit inlet and outlet water flow rate, target chiller evaporator outlet water temperature, target chiller condenser outlet water temperature, target chiller condenser inlet water temperature, chiller condenser inlet and outlet water flow rate, target chiller room power consumption, and environmental control system power consumption.

[0090] In one embodiment, the preset simulation inputs include preset air conditioning unit inlet water temperature, preset chiller unit condenser inlet water temperature, preset air conditioning unit inlet and outlet water flow rates, and preset chiller unit condenser inlet and outlet water flow rates. These preset air conditioning unit inlet water temperature, preset air conditioning unit inlet and outlet water flow rates, preset chiller unit condenser inlet water temperature, and preset chiller unit condenser inlet and outlet water flow rates are input into a preset simulation model for simulation processing. When the iteration conditions are met, at least one set of equipment status parameters is output. These equipment status parameters include the target air conditioning unit outlet water temperature, target air conditioning unit inlet water temperature, target air conditioning unit inlet and outlet water flow rates, target chiller unit evaporator outlet water temperature, target chiller unit condenser outlet water temperature, target chiller unit condenser inlet water temperature, target chiller unit condenser inlet and outlet water flow rates, target chiller room power consumption, and environmental control system power consumption, etc.

[0091] In one embodiment, the preset simulation model includes an air conditioning unit simulation model, a chiller unit simulation model, and a cooling tower simulation model. Preset parameters include the air conditioning unit inlet water temperature, the chiller unit condenser inlet water temperature, the air conditioning unit inlet and outlet water flow rates, and the chiller unit condenser inlet and outlet water flow rates. The preset air conditioning unit inlet water temperature and the preset air conditioning unit inlet and outlet water flow rates are input into the air conditioning unit simulation model for simulation processing until the first iteration condition is met, at which point the target air conditioning unit outlet water temperature and the target air conditioning unit power consumption are obtained. The simulation input quantities corresponding to the target air conditioning unit outlet water temperature are the target air conditioning unit inlet water temperature and the target air conditioning unit inlet and outlet water flow rates. The preset chiller condenser inlet water temperature and preset chiller condenser inlet and outlet water flow rates are input into the chiller simulation model for simulation processing until the second iteration condition is met. This yields the target chiller evaporator outlet water temperature, target chiller condenser outlet water temperature, and target chiller power consumption. The simulation inputs for the target chiller evaporator outlet water temperature and target chiller condenser outlet water temperature are the target chiller condenser inlet water temperature and target chiller condenser inlet and outlet water flow rates. The cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing until the second iteration termination condition is met. This yields the target cooling tower outlet water temperature and target fan power consumption. The cooling tower inlet water temperature is set to be the same as the chiller condenser outlet water temperature. The power consumption of the target air conditioning unit and the target chiller room are summed to obtain the corresponding environmental control system power consumption. The target chiller room power consumption includes the target chiller unit power consumption and the target fan power consumption. Output at least one set of equipment status parameters including the target air conditioning unit outlet water temperature, target air conditioning unit inlet water temperature, target air conditioning unit inlet and outlet water flow rate, target chiller evaporator outlet water temperature, target chiller condenser outlet water temperature, target chiller condenser inlet water temperature, target chiller condenser inlet and outlet water flow rate, target chiller room power consumption, and environmental control system power consumption.

[0092] In one embodiment, the preset simulation model also includes a water pump simulation model. The parameters of the water pump simulation model include the water pump type, equipment parameters, and water pump performance curves. Using the water pump's operating frequency as a dynamic input variable, equipment status such as water pump flow rate and power consumption can be calculated. Water pump types can be divided into fixed-frequency water pumps and variable-frequency water pumps. The water pump's equipment parameters include its rated flow rate, rated power, and motor efficiency. The water pump performance curve is a power correction curve under partial load, which varies depending on the water pump type and model.

[0093] It should be noted that the power consumption of the target chiller room mentioned above also includes the power consumption of the water pumps. That is, the power consumption of the target chiller room includes the power consumption of the water pumps, the power consumption of the target fans, and the power consumption of the target chiller units. The power consumption of the target air conditioning units and the power consumption of the target chiller room are summed to obtain the corresponding power consumption of the environmental control system.

[0094] The environmental control system (ECS) is a combined structure consisting of chillers, water pumps, cooling towers, and air conditioning units. Chilled water serves as the heat transfer medium between these devices. Therefore, the operation of these devices is interconnected. For example, the outlet water temperature of the chiller evaporator determines the inlet water temperature of the air conditioning unit, and the outlet water temperature of the chiller condenser determines the inlet water temperature of the cooling tower. The real-time operating status of the ECS is determined by the mutual influence of the operating states of each device. Therefore, by using the iterative algorithm described above to connect the simulation models corresponding to each device, and cyclically updating the state of each device (e.g., water temperature, energy consumption), convergence is achieved to obtain the current operating state of each device and the system. This allows for the identification of the optimal control parameters for the entire system's energy efficiency under different boundary conditions (meteorological parameters and passenger flow, etc.) at various times.

[0095] S102. Perform energy consumption calculation processing on the output at least one set of equipment operating status parameters, obtain the set of equipment operating status parameters with the lowest corresponding energy consumption as the optimal control parameters, and output the optimal control parameters to control the operation of the corresponding environmental control system through the optimal control parameters.

[0096] Through the simulation processing in step S101, at least one set of equipment operating status parameters that satisfy the iteration conditions can be obtained. Energy consumption calculations are performed on this set of parameters to obtain the set with the lowest energy consumption as the optimal control parameters. These optimal control parameters are then output, and the environmental control system is controlled based on them to manage its operation. By using the set of equipment operating parameters with the lowest energy consumption as the optimal control parameters, the energy consumption of the environmental control system is reduced, while also achieving more stable control over indoor environmental factors such as temperature and humidity.

[0097] It should be noted that at preset intervals, steps S101-S102 are re-executed to output new optimal control parameters. The operation of the environmental control system is then controlled using the latest optimal control parameters to continuously optimize the operating parameters of the environmental control system and achieve the effect of continuously reducing the energy consumption of the environmental control system.

[0098] Figure 2 This is a flowchart of another dynamic simulation method for a rail transit environmental control system provided in this application embodiment, refer to... Figure 2 The dynamic simulation method for the rail transit environmental control system specifically includes:

[0099] S201. Assume the inlet water temperature of the air conditioning unit.

[0100] Assuming the inlet water temperature of the air conditioning unit is equal to the outlet water temperature of the chiller evaporator, this is an initial value that can be set based on experience or historical data.

[0101] S202, Calculation of simulation model of air conditioning unit.

[0102] The initial value of the air conditioning unit inlet water temperature assumed in step S201 is substituted into the air conditioning unit simulation model for simulation calculation to obtain the air conditioning unit outlet water temperature. It should be noted that the air conditioning unit outlet water temperature at this time is the average outlet water temperature of the air conditioning unit.

[0103] S203. Assume the inlet water temperature of the chiller evaporator and the inlet water temperature of the chiller condenser.

[0104] Assume the evaporator inlet water temperature of the chiller unit is equal to the air conditioning unit outlet water temperature calculated in step S202, and also assume the condenser inlet water temperature of the chiller unit is equal to the design outlet water temperature of the cooling tower. Since the cooling tower outlet water temperature is the design outlet water temperature at this point, the condenser inlet water temperature of the chiller unit at this point is an assumed initial value. This initial value can be set based on actual experience or historical data.

[0105] S204, Calculation of simulation model of chiller unit.

[0106] The chiller unit evaporator inlet water temperature and chiller unit condenser inlet water temperature assumed in step S203 are substituted into the chiller unit simulation model for simulation calculation to obtain the chiller unit evaporator outlet water temperature and chiller unit condenser outlet water temperature. It should be noted that the chiller unit evaporator outlet water temperature obtained through the chiller unit simulation model is the average outlet water temperature of the chiller unit evaporator. The chiller unit condenser outlet water temperature obtained through the chiller unit simulation model is the average outlet water temperature of the chiller unit condenser.

[0107] S205. Determine whether the outlet water temperature of the chiller evaporator is consistent with the inlet water temperature of the air conditioning unit.

[0108] The system determines whether the outlet water temperature of the chiller evaporator and the corresponding inlet water temperature of the air conditioning unit meet the first iteration termination condition, i.e., whether the outlet water temperature of the chiller evaporator is consistent with the inlet water temperature of the air conditioning unit. If the outlet water temperature of the chiller evaporator is consistent with the inlet water temperature of the air conditioning unit, or the difference between the outlet water temperature of the chiller evaporator and the inlet water temperature of the air conditioning unit is less than or equal to a first threshold (e.g., 0.1℃), then the first iteration termination condition is met, and step S207 is executed. If the difference between the outlet water temperature of the chiller evaporator and the inlet water temperature of the air conditioning unit is greater than the first threshold (e.g., 0.1℃), then the first iteration termination condition is not met, and step S206 is executed to re-perform the simulation until the outlet water temperature of the chiller evaporator meets the first iteration termination condition, and then step S207 is executed.

[0109] S206, Correct the inlet water temperature of the air conditioning unit.

[0110] If the difference between the chiller evaporator outlet temperature and the air conditioning unit inlet temperature is greater than the first threshold (e.g., 0.1℃), the air conditioning unit inlet temperature is corrected. The air conditioning unit inlet temperature is corrected to be the same as the chiller evaporator outlet temperature obtained from the chiller simulation model, and the corrected air conditioning unit inlet temperature is input into the air conditioning unit simulation model for re-simulation processing until the chiller evaporator outlet temperature is consistent with the air conditioning unit inlet temperature, or the difference between the chiller evaporator outlet temperature and the air conditioning unit inlet temperature is less than or equal to the first threshold (e.g., 0.1℃). Then the first iteration termination condition is met, and step S207 is executed.

[0111] S207. Assume the inlet water temperature of the cooling tower.

[0112] Assume that the cooling tower inlet water temperature is equal to the chiller condenser outlet water temperature calculated by the chiller simulation model in step S204.

[0113] S208, Calculation of cooling tower simulation model.

[0114] The cooling tower inlet water temperature assumed in step S207 is substituted into the cooling tower simulation model for simulation calculation to obtain the cooling tower outlet water temperature.

[0115] S209. Determine whether the outlet water temperature of the cooling tower is consistent with the inlet water temperature of the chiller condenser.

[0116] The system determines whether the cooling tower outlet water temperature and the chiller condenser inlet water temperature meet the second iteration termination condition, i.e., whether they are consistent. If the cooling tower outlet water temperature and the chiller condenser inlet water temperature are consistent, or the difference between them is less than or equal to a second threshold (e.g., 0.1℃), then the second iteration termination condition is met, and step S302 is executed. If the difference between the cooling tower outlet water temperature and the chiller condenser inlet water temperature is greater than the second threshold (e.g., 0.1℃), then the second iteration termination condition is not met, and step S301 is executed to correct the chiller condenser inlet water temperature. The simulation is then repeated until the difference between the cooling tower outlet water temperature and the chiller condenser inlet water temperature meets the second iteration termination condition, and then step S302 is executed.

[0117] S301, Correct the condenser inlet water temperature of the chiller unit.

[0118] If the difference between the cooling tower outlet water temperature and the chiller unit condenser inlet water temperature is greater than the second threshold (e.g., 0.1℃), it is determined that the iteration termination condition is not met, and the chiller unit condenser inlet water temperature is corrected. The chiller unit condenser inlet water temperature is corrected to be the same as the cooling tower outlet water temperature obtained from the cooling tower simulation model in step S208, and the corrected chiller unit condenser inlet water temperature is input into the chiller unit simulation model. Steps S204-S209 are executed again until the difference between the obtained cooling tower outlet water temperature and the chiller unit condenser inlet water temperature meets the second iteration termination condition, and then step S302 is executed.

[0119] S302, Output the operating status of each device and system.

[0120] If the difference between the cooling tower outlet water temperature and the chiller unit condenser inlet water temperature meets the second iteration termination condition, i.e., the cooling tower outlet water temperature is the same as the chiller unit condenser inlet water temperature, or the difference between the cooling tower outlet water temperature and the chiller unit condenser inlet water temperature is less than or equal to the second threshold (e.g., 0.1℃), then the operating status data of each device and system at that moment will be output. The output device and system operating status data includes the target air conditioning unit outlet water temperature, target air conditioning unit inlet water temperature, target air conditioning unit inlet and outlet water flow rates, target chiller unit evaporator outlet water temperature, target chiller unit condenser outlet water temperature, target chiller unit condenser inlet water temperature, chiller unit condenser inlet and outlet water flow rates, target chiller room power consumption, environmental control system power consumption, system cooling capacity, chiller room coefficient of performance (COP), and environmental control system coefficient of performance (COP), etc. The environmental control system power consumption is the sum of the power consumption of all devices.

[0121] The aforementioned physical models and system-level iterative solution algorithms based on equipment such as chillers, pumps, cooling towers, and air conditioning units enable dynamic simulation of the equipment and system operating states of a subway environmental control system. The simulation results can be used for global optimization control of the subway environmental control system, avoiding phenomena such as oscillations and lags found in traditional control strategies. Simultaneously, it achieves optimal control objectives such as optimal energy consumption for the entire system.

[0122] The above describes a simulation process where preset simulation inputs, including preset air conditioning unit inlet water temperature and preset chiller unit condenser inlet water temperature, are input into a preset simulation model for simulation processing. The process continues until an iteration termination condition is met, at least one set of equipment operating status parameters is output. These parameters are then used for energy consumption calculations to obtain the set with the lowest energy consumption as the optimal control parameter. This optimal control parameter is then output to control the corresponding environmental control system. Using this technique, a preset simulation model can be used for simulation processing until the iteration termination condition is met, outputting equipment operating status parameters to achieve global optimization control of the rail transit environmental control system, reducing its energy consumption and improving its energy-saving effect. Furthermore, by performing energy consumption calculations on the output at least one set of equipment operating status parameters to obtain the set with the lowest energy consumption as the optimal control parameter, the energy-saving effect of the rail transit environmental control system is further improved.

[0123] Based on the above embodiments, Figure 3 This is a schematic diagram of the structure of a dynamic simulation device for a rail transit environmental control system, provided as an embodiment of this application. (Reference) Figure 3 The dynamic simulation device for rail transit environmental control system provided in this embodiment specifically includes: simulation unit 21 and optimal control parameter output unit 22.

[0124] The simulation unit 21 is used to input the preset simulation input quantities into the preset simulation model for simulation processing until the iteration termination condition is met, and output at least one set of equipment operating status parameters. The preset simulation input quantities include the preset air conditioning unit inlet water temperature and the preset chiller unit condenser inlet water temperature.

[0125] The optimal control parameter output unit 22 is used to perform energy consumption calculation processing on the output at least one set of equipment operating status parameters, obtain the set of equipment operating status parameters with the lowest corresponding energy consumption as the optimal control parameters, and output the optimal control parameters so as to control the operation of the corresponding environmental control system through the optimal control parameters.

[0126] Furthermore, the preset simulation model includes an air conditioning unit simulation model, a chiller unit simulation model, and a cooling tower simulation model;

[0127] The simulation unit 21 is also used to input the preset air conditioning unit inlet water temperature into the air conditioning unit simulation model for simulation processing to obtain the air conditioning unit outlet water temperature.

[0128] The preset condenser inlet temperature and evaporator inlet temperature of the chiller unit are input into the chiller unit simulation model for simulation processing to obtain the evaporator outlet temperature and condenser outlet temperature of the chiller unit. The evaporator inlet temperature of the chiller unit is set to be the same as the outlet temperature of the air conditioning unit.

[0129] The cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing to obtain the cooling tower outlet water temperature. The cooling tower inlet water temperature is set to be the same as the chiller unit condenser outlet water temperature.

[0130] If the outlet water temperature of the chiller evaporator and the outlet water temperature of the cooling tower meet the iteration termination condition, then the corresponding equipment operating status parameters are output.

[0131] If the evaporator outlet temperature of the chiller unit and the cooling tower outlet temperature do not meet the iteration termination condition, the inlet water temperature of the air conditioning unit and the inlet water temperature of the chiller unit are adjusted and the simulation is repeated until the evaporator outlet temperature of the chiller unit and the cooling tower outlet temperature obtained from the simulation meet the iteration termination condition, and then the corresponding equipment operating status parameters are output.

[0132] Furthermore, the simulation unit 21 is also used to adjust the inlet water temperature of the air conditioning unit to be the same as the outlet water temperature of the air conditioning unit evaporator if the outlet water temperature of the chiller unit evaporator does not meet the first iteration termination condition, and input the adjusted inlet water temperature of the air conditioning unit into the air conditioning unit simulation model to re-simulate and obtain the outlet water temperature of the air conditioning unit, adjust the inlet water temperature of the chiller unit evaporator to be the same as the outlet water temperature of the air conditioning unit, and input the adjusted inlet water temperature of the chiller unit evaporator into the chiller unit simulation model for simulation processing until the outlet water temperature of the chiller unit evaporator obtained by simulation processing meets the first iteration termination condition, and output the corresponding target outlet water temperature of the chiller unit evaporator.

[0133] If the evaporator outlet water temperature of the chiller unit meets the first iteration termination condition, the cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing to obtain the cooling tower outlet water temperature. The cooling tower inlet water temperature is set to be the same as the condenser outlet water temperature of the target chiller unit.

[0134] If the cooling tower outlet water temperature does not meet the second iteration termination condition, the chiller unit condenser inlet water temperature is adjusted to be the same as the cooling tower outlet water temperature. The adjusted chiller unit condenser inlet water temperature is then input into the chiller unit simulation model for re-simulation processing to obtain the chiller unit evaporator outlet water temperature and chiller unit condenser outlet water temperature. The cooling tower inlet water temperature is then adjusted to be the same as the chiller unit condenser outlet water temperature, and the adjusted cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing. This process continues until the cooling tower outlet water temperature obtained from the simulation processing meets the second iteration termination condition, at which point the corresponding equipment operating status parameters are output.

[0135] Furthermore, the first iteration termination condition is that the difference between the outlet water temperature of the chiller evaporator and the inlet water temperature of the air conditioning unit is less than or equal to a first threshold.

[0136] The simulation unit 21 is also used to adjust the inlet temperature of the air conditioning unit to be the same as the outlet temperature of the evaporator of the chiller unit if the difference between the outlet temperature of the chiller unit and the inlet temperature of the air conditioning unit does not meet the requirement of being less than or equal to the first threshold.

[0137] The adjusted inlet water temperature of the air conditioning unit is input into the simulation model of the air conditioning unit for re-simulation processing to obtain the outlet water temperature of the air conditioning unit.

[0138] The inlet water temperature of the chiller evaporator is adjusted to be the same as the outlet water temperature of the air conditioning unit. The adjusted inlet water temperature of the chiller evaporator is then input into the chiller simulation model for simulation processing. The simulation continues until the difference between the outlet water temperature of the chiller evaporator and the inlet water temperature of the air conditioning unit is less than or equal to the first threshold. At this point, the corresponding target outlet water temperature of the chiller evaporator is output.

[0139] Furthermore, the second iteration termination condition is that the difference between the cooling tower outlet water temperature and the chiller unit condenser inlet water temperature is less than or equal to the second threshold.

[0140] The simulation unit 21 is also used to adjust the temperature of the cooling tower condenser to be the same as the temperature of the cooling tower if the difference between the cooling tower outlet water temperature and the chiller unit condenser inlet water temperature does not meet the requirement of being less than or equal to the second threshold.

[0141] The adjusted condenser inlet water temperature of the chiller unit is input into the chiller unit simulation model and re-simulated to obtain the evaporator outlet water temperature and the condenser outlet water temperature of the chiller unit.

[0142] The cooling tower inlet water temperature is adjusted to be the same as the chiller unit condenser outlet water temperature, and the adjusted cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing. When the difference between the simulated cooling tower outlet water temperature and the chiller unit condenser inlet water temperature is less than or equal to the second threshold, the corresponding equipment operating status parameters are output.

[0143] Furthermore, the preset simulation input quantities also include preset air conditioning unit inlet and outlet water flow rates and preset chiller unit condenser inlet and outlet water flow rates.

[0144] The simulation unit 21 is also used to input the preset air conditioning unit inlet water temperature, the preset air conditioning unit inlet and outlet water flow rate, the preset chiller unit condenser inlet water temperature, and the preset chiller unit condenser inlet and outlet water flow rate into a preset simulation model for simulation processing until the iteration conditions are met, and output at least one set of equipment status parameters. The equipment status parameters include the target air conditioning unit outlet water temperature, the target air conditioning unit inlet water temperature, the target air conditioning unit inlet and outlet water flow rate, the target chiller unit evaporator outlet water temperature, the target chiller unit condenser outlet water temperature, the target chiller unit condenser inlet water temperature, the target chiller unit condenser inlet and outlet water flow rate, the target chiller room power consumption, and the environmental control system power consumption.

[0145] Furthermore, the simulation unit 21 is also used to input the preset air conditioning unit inlet water temperature and the preset air conditioning unit inlet and outlet water flow rate into the air conditioning unit simulation model for simulation processing until the first iteration condition is met, and then obtain the target air conditioning unit outlet water temperature and the target air conditioning unit power consumption. The simulation input quantity corresponding to the target air conditioning unit outlet water temperature is the target air conditioning unit inlet water temperature and the target air conditioning unit inlet and outlet water flow rate.

[0146] The preset chiller condenser inlet water temperature and the preset chiller condenser inlet and outlet water flow rates are input into the chiller simulation model for simulation processing until the second iteration condition is met, and the target chiller evaporator outlet water temperature, target chiller condenser outlet water temperature, and target chiller power consumption are obtained. The simulation inputs corresponding to the target chiller evaporator outlet water temperature and target chiller condenser outlet water temperature are the target chiller condenser inlet water temperature and target chiller condenser inlet and outlet water flow rates.

[0147] The cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing until the second iteration termination condition is met, and the target cooling tower outlet water temperature and target fan power consumption are obtained. The cooling tower inlet water temperature is set to be the same as the chiller unit condenser outlet water temperature.

[0148] The power consumption of the target air conditioning unit and the power consumption of the target chiller room are summed to obtain the corresponding power consumption of the environmental control system. The power consumption of the target chiller room includes the power consumption of the target chiller unit and the power consumption of the target fan.

[0149] Output at least one set of equipment status parameters including the target air conditioning unit outlet water temperature, target air conditioning unit inlet water temperature, target air conditioning unit inlet and outlet water flow rate, target chiller evaporator outlet water temperature, target chiller condenser outlet water temperature, target chiller condenser inlet water temperature, target chiller condenser inlet and outlet water flow rate, target chiller room power consumption, and environmental control system power consumption.

[0150] The above describes a simulation process where preset simulation inputs, including preset air conditioning unit inlet water temperature and preset chiller unit condenser inlet water temperature, are input into a preset simulation model for simulation processing. The process continues until an iteration termination condition is met, at least one set of equipment operating status parameters is output. These parameters are then used for energy consumption calculations to obtain the set with the lowest energy consumption as the optimal control parameter. This optimal control parameter is then output to control the corresponding environmental control system. Using this technique, a preset simulation model can be used for simulation processing until the iteration termination condition is met, outputting equipment operating status parameters to achieve global optimization control of the rail transit environmental control system, reducing its energy consumption and improving its energy-saving effect. Furthermore, by performing energy consumption calculations on the output at least one set of equipment operating status parameters to obtain the set with the lowest energy consumption as the optimal control parameter, the energy-saving effect of the rail transit environmental control system is further improved.

[0151] The dynamic simulation device for rail transit environmental control system provided in this application embodiment can be used to execute the dynamic simulation method for rail transit environmental control system provided in the above embodiment, and has corresponding functions and beneficial effects.

[0152] This application provides a dynamic simulation device for a rail transit environmental control system, referring to... Figure 4 The dynamic simulation equipment for the rail transit environmental control system includes: a processor 31, a memory 32, a communication module 33, an input device 34, and an output device 35. The number of processors and the number of memories in the dynamic simulation equipment can be one or more. The processor, memory, communication module, input device, and output device of the dynamic simulation equipment can be connected via a bus or other means.

[0153] The memory 32, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as program instructions / modules corresponding to the dynamic simulation method for rail transit environmental control systems described in any embodiment of this application (e.g., simulation units and optimal control parameter output units in a dynamic simulation device for rail transit environmental control systems). The memory may primarily include a program storage area and a data storage area. The program storage area may store the operating system and at least one application program required for a function; the data storage area may store data created based on the use of the device, etc. Furthermore, the memory may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory may further include memory remotely located relative to the processor, and these remote memories can be connected to the device via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0154] The communication module 33 is used for data transmission.

[0155] The processor 31 executes various functional applications and data processing of the device by running software programs, instructions and modules stored in the memory, thereby realizing the above-mentioned dynamic simulation method for rail transit environmental control system.

[0156] Input device 34 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the device. Output device 35 may include display devices such as a display screen.

[0157] The aforementioned dynamic simulation equipment for rail transit environmental control systems can be used to execute the dynamic simulation method for rail transit environmental control systems provided in the above embodiments, and has corresponding functions and beneficial effects.

[0158] This application embodiment also provides a storage medium for storing computer-executable instructions. When executed by a computer processor, the computer-executable instructions are used to execute a dynamic simulation method for a rail transit environmental control system. The dynamic simulation method for a rail transit environmental control system includes: inputting preset simulation input quantities into a preset simulation model for simulation processing until the iteration termination condition is met, and outputting at least one set of equipment operating status parameters. The preset simulation input quantities include preset air conditioning unit inlet water temperature and preset chiller unit condenser inlet water temperature; performing energy consumption calculation processing on the output at least one set of equipment operating status parameters, obtaining the set of equipment operating status parameters with the lowest corresponding energy consumption as the optimal control parameters, and outputting the optimal control parameters to control the operation of the corresponding environmental control system through the optimal control parameters.

[0159] Storage medium – any type of memory device or storage device. The term “storage medium” is intended to include: mounting media, such as CD-ROM, floppy disk, or magnetic tape devices; computer system memory or random access memory, such as DRAM, DDR RAM, SRAM, EDO RAM, Rambus RAM, etc.; non-volatile memory, such as flash memory, magnetic media (e.g., hard disk or optical storage); registers or other similar types of memory elements, etc. Storage medium may also include other types of memory or combinations thereof. Furthermore, storage medium may reside in a first computer system in which the program is executed, or it may reside in a different second computer system connected to the first computer system via a network (such as the Internet). The second computer system can provide program instructions to the first computer for execution. The term “storage medium” can include two or more storage media residing in different locations (e.g., in different computer systems connected via a network). Storage medium may store program instructions (e.g., specifically implemented as a computer program) executable by one or more processors.

[0160] Of course, the computer-executable instructions provided in the embodiments of this application are not limited to the dynamic simulation method of the rail transit environmental control system as described above, but can also execute related operations in the dynamic simulation method of the rail transit environmental control system provided in any embodiment of this application.

[0161] The dynamic simulation device, storage medium, and dynamic simulation equipment for rail transit environmental control systems provided in the above embodiments can execute the dynamic simulation method for rail transit environmental control systems provided in any embodiment of this application. For technical details not described in detail in the above embodiments, please refer to the dynamic simulation method for rail transit environmental control systems provided in any embodiment of this application.

[0162] The above description is merely a preferred embodiment and the technical principles employed in this application. This application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions that can be made by those skilled in the art will not depart from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of this application, the scope of which is determined by the scope of the claims.

Claims

1. A dynamic simulation method for a rail transit environmental control system, characterized in that, include: The preset simulation input quantities are input into the preset simulation model for simulation processing until the iteration termination condition is met, and at least one set of equipment operating status parameters are output. The preset simulation input quantities include the preset air conditioning unit inlet water temperature and the preset chiller unit condenser inlet water temperature. The preset simulation model includes the air conditioning unit simulation model, the chiller unit simulation model and the cooling tower simulation model. The energy consumption calculation is performed on the output at least one set of equipment operating status parameters to obtain the set of equipment operating status parameters with the lowest corresponding energy consumption as the optimal control parameters. The optimal control parameters are then output to control the operation of the corresponding environmental control system. The step of inputting preset simulation input quantities into a preset simulation model for simulation processing until the iteration termination condition is met, and then outputting at least one set of equipment operating status parameters, including: The preset inlet water temperature of the air conditioning unit is input into the simulation model of the air conditioning unit for simulation processing to obtain the outlet water temperature of the air conditioning unit. The preset condenser inlet temperature and evaporator inlet temperature of the chiller unit are input into the chiller unit simulation model for simulation processing to obtain the evaporator outlet temperature and condenser outlet temperature of the chiller unit. The evaporator inlet temperature of the chiller unit is set to be the same as the outlet temperature of the air conditioning unit. The cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing to obtain the cooling tower outlet water temperature. The cooling tower inlet water temperature is set to be the same as the chiller unit condenser outlet water temperature. If the outlet water temperature of the chiller evaporator and the outlet water temperature of the cooling tower meet the iteration termination condition, then the corresponding equipment operating status parameters are output. If the evaporator outlet temperature of the chiller unit and the cooling tower outlet temperature do not meet the iteration termination condition, the inlet water temperature of the air conditioning unit and the inlet water temperature of the chiller unit are adjusted and the simulation is repeated until the evaporator outlet temperature of the chiller unit and the cooling tower outlet temperature obtained from the simulation meet the iteration termination condition, and then the corresponding equipment operating status parameters are output.

2. The method according to claim 1, characterized in that, If the evaporator outlet temperature of the chiller unit and the cooling tower outlet temperature do not meet the iteration termination condition, the inlet water temperature of the air conditioning unit and the condenser inlet water temperature of the chiller unit are adjusted, and the simulation is repeated until the evaporator outlet temperature of the chiller unit and the cooling tower outlet temperature obtained from the simulation meet the iteration termination condition. Then, the corresponding equipment operating status parameters are output, including: If the evaporator outlet temperature of the chiller unit does not meet the first iteration termination condition, then the inlet water temperature of the air conditioning unit is adjusted to be the same as the evaporator outlet temperature of the chiller unit, and the adjusted inlet water temperature of the air conditioning unit is input into the air conditioning unit simulation model for re-simulation processing to obtain the outlet water temperature of the air conditioning unit. The inlet water temperature of the chiller unit evaporator is adjusted to be the same as the outlet water temperature of the air conditioning unit, and the adjusted inlet water temperature of the chiller unit evaporator is input into the chiller unit simulation model for simulation processing until the chiller unit evaporator outlet temperature obtained by simulation processing meets the first iteration termination condition, and the corresponding target chiller unit evaporator outlet temperature is output. If the evaporator outlet water temperature of the chiller unit meets the first iteration termination condition, the cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing to obtain the cooling tower outlet water temperature. The cooling tower inlet water temperature is set to be the same as the condenser outlet water temperature of the target chiller unit. If the cooling tower outlet water temperature does not meet the second iteration termination condition, the chiller unit condenser inlet water temperature is adjusted to be the same as the cooling tower outlet water temperature. The adjusted chiller unit condenser inlet water temperature is then input into the chiller unit simulation model for re-simulation processing to obtain the chiller unit evaporator outlet water temperature and chiller unit condenser outlet water temperature. The cooling tower inlet water temperature is then adjusted to be the same as the chiller unit condenser outlet water temperature, and the adjusted cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing. This process continues until the cooling tower outlet water temperature obtained from the simulation processing meets the second iteration termination condition, at which point the corresponding equipment operating status parameters are output.

3. The method according to claim 2, characterized in that, The first iteration termination condition is that the difference between the outlet water temperature of the chiller evaporator and the inlet water temperature of the air conditioning unit is less than or equal to a first threshold. If the evaporator outlet temperature of the chiller unit does not meet the first iteration termination condition, then the inlet water temperature of the air conditioning unit is adjusted to be the same as the evaporator outlet temperature of the chiller unit, and the adjusted inlet water temperature of the air conditioning unit is input into the air conditioning unit simulation model for re-simulation processing to obtain the outlet water temperature of the air conditioning unit. The evaporator inlet temperature of the chiller unit is then adjusted to be the same as the outlet water temperature of the air conditioning unit, and the adjusted evaporator inlet temperature of the chiller unit is input into the chiller unit simulation model for simulation processing until the evaporator outlet temperature of the chiller unit obtained from the simulation processing meets the first iteration termination condition. Finally, the corresponding target evaporator outlet temperature of the chiller unit is output, including: If the difference between the outlet water temperature of the chiller evaporator and the inlet water temperature of the air conditioning unit does not meet the requirement of being less than or equal to the first threshold, then the inlet water temperature of the air conditioning unit is adjusted to be the same as the outlet water temperature of the chiller evaporator. The adjusted inlet water temperature of the air conditioning unit is input into the simulation model of the air conditioning unit for re-simulation processing to obtain the outlet water temperature of the air conditioning unit. The inlet water temperature of the chiller evaporator is adjusted to be the same as the outlet water temperature of the air conditioning unit. The adjusted inlet water temperature of the chiller evaporator is then input into the chiller simulation model for simulation processing. The simulation continues until the difference between the outlet water temperature of the chiller evaporator and the inlet water temperature of the air conditioning unit is less than or equal to the first threshold. At this point, the corresponding target outlet water temperature of the chiller evaporator is output.

4. The method according to claim 2, characterized in that, The second iteration termination condition is that the difference between the cooling tower outlet water temperature and the chiller unit condenser inlet water temperature is less than or equal to the second threshold. If the cooling tower outlet water temperature does not meet the second iteration termination condition, the chiller unit condenser inlet water temperature is adjusted to be the same as the cooling tower outlet water temperature. The adjusted chiller unit condenser inlet water temperature is then input into the chiller unit simulation model for re-simulation processing to obtain the chiller unit evaporator outlet water temperature and chiller unit condenser outlet water temperature. The cooling tower inlet water temperature is then adjusted to be the same as the chiller unit condenser outlet water temperature, and the adjusted cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing. This process continues until the cooling tower outlet water temperature obtained from the simulation processing meets the second iteration termination condition. At this point, the corresponding equipment operating status parameters are output, including: If the difference between the cooling tower outlet water temperature and the chiller unit condenser inlet water temperature does not meet the requirement of being less than or equal to the second threshold, then the chiller unit condenser inlet water temperature is adjusted to be the same as the cooling tower outlet water temperature. The adjusted condenser inlet water temperature of the chiller unit is input into the chiller unit simulation model and re-simulated to obtain the evaporator outlet water temperature and the condenser outlet water temperature of the chiller unit. The cooling tower inlet water temperature is adjusted to be the same as the chiller unit condenser outlet water temperature, and the adjusted cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing. When the difference between the simulated cooling tower outlet water temperature and the chiller unit condenser inlet water temperature is less than or equal to the second threshold, the corresponding equipment operating status parameters are output.

5. The method according to claim 1, characterized in that, The preset simulation inputs also include preset air conditioning unit inlet and outlet water flow rates and preset chiller unit condenser inlet and outlet water flow rates. The process involves inputting preset simulation input quantities into a preset simulation model for simulation processing until the iteration termination condition is met, at least one set of equipment operating status parameters is output, including: The preset air conditioning unit inlet water temperature, preset air conditioning unit inlet and outlet water flow rates, preset chiller unit condenser inlet water temperature, and preset chiller unit condenser inlet and outlet water flow rates are input into a preset simulation model for simulation processing. When the iteration conditions are met, at least one set of equipment status parameters is output. The equipment status parameters include the target air conditioning unit outlet water temperature, target air conditioning unit inlet water temperature, target air conditioning unit inlet and outlet water flow rates, target chiller unit evaporator outlet water temperature, target chiller unit condenser outlet water temperature, target chiller unit condenser inlet water temperature, target chiller unit condenser inlet and outlet water flow rates, target chiller room power consumption, and environmental control system power consumption.

6. The method according to claim 5, characterized in that, The preset air conditioning unit inlet water temperature, preset air conditioning unit inlet and outlet water flow rates, preset chiller unit condenser inlet water temperature, and preset chiller unit condenser inlet and outlet water flow rates are input into a preset simulation model for simulation processing. When the iteration conditions are met, at least one set of equipment status parameters is output, including: The preset air conditioning unit inlet water temperature and the preset air conditioning unit inlet and outlet water flow rate are input into the air conditioning unit simulation model for simulation processing until the first iteration termination condition is met, and the target air conditioning unit outlet water temperature and the target air conditioning unit power consumption are obtained. The simulation input quantities corresponding to the target air conditioning unit outlet water temperature are the target air conditioning unit inlet water temperature and the target air conditioning unit inlet and outlet water flow rate. The preset chiller condenser inlet water temperature and the preset chiller condenser inlet and outlet water flow rates are input into the chiller simulation model for simulation processing until the second iteration termination condition is met, and the target chiller evaporator outlet water temperature, target chiller condenser outlet water temperature, and target chiller power consumption are obtained. The simulation inputs corresponding to the target chiller evaporator outlet water temperature and target chiller condenser outlet water temperature are the target chiller condenser inlet water temperature and target chiller condenser inlet and outlet water flow rates. The cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing until the second iteration termination condition is met, and the target cooling tower outlet water temperature and target fan power consumption are obtained. The cooling tower inlet water temperature is set to be the same as the chiller unit condenser outlet water temperature. The power consumption of the target air conditioning unit and the power consumption of the target chiller room are summed to obtain the corresponding power consumption of the environmental control system. The power consumption of the target chiller room includes the power consumption of the target chiller unit and the power consumption of the target fan. Output at least one set of equipment status parameters including the target air conditioning unit outlet water temperature, target air conditioning unit inlet water temperature, target air conditioning unit inlet and outlet water flow rate, target chiller evaporator outlet water temperature, target chiller condenser outlet water temperature, target chiller condenser inlet water temperature, target chiller condenser inlet and outlet water flow rate, target chiller room power consumption, and environmental control system power consumption.

7. A dynamic simulation device for a rail transit environmental control system, characterized in that, include: The simulation unit is used to input preset simulation input quantities into a preset simulation model for simulation processing until the iteration termination condition is met, and output at least one set of equipment operating status parameters. The preset simulation input quantities include preset air conditioning unit inlet water temperature and preset chiller unit condenser inlet water temperature. The preset simulation model includes air conditioning unit simulation model, chiller unit simulation model and cooling tower simulation model. The optimal control parameter output unit is used to perform energy consumption calculation processing on the output at least one set of equipment operating status parameters, obtain the set of equipment operating status parameters with the lowest corresponding energy consumption as the optimal control parameters, and output the optimal control parameters so as to control the operation of the corresponding environmental control system through the optimal control parameters. The simulation unit is also used to input the preset air conditioning unit inlet water temperature into the air conditioning unit simulation model for simulation processing to obtain the air conditioning unit outlet water temperature. The preset condenser inlet temperature and evaporator inlet temperature of the chiller unit are input into the chiller unit simulation model for simulation processing to obtain the evaporator outlet temperature and condenser outlet temperature of the chiller unit. The evaporator inlet temperature of the chiller unit is set to be the same as the outlet temperature of the air conditioning unit. The cooling tower inlet water temperature is input into the cooling tower simulation model for simulation processing to obtain the cooling tower outlet water temperature. The cooling tower inlet water temperature is set to be the same as the chiller unit condenser outlet water temperature. If the outlet water temperature of the chiller evaporator and the outlet water temperature of the cooling tower meet the iteration termination condition, then the corresponding equipment operating status parameters are output. If the evaporator outlet temperature of the chiller unit and the cooling tower outlet temperature do not meet the iteration termination condition, the inlet water temperature of the air conditioning unit and the inlet water temperature of the chiller unit are adjusted and the simulation is repeated until the evaporator outlet temperature of the chiller unit and the cooling tower outlet temperature obtained from the simulation meet the iteration termination condition, and then the corresponding equipment operating status parameters are output.

8. A dynamic simulation device for a rail transit environmental control system, characterized in that, include: Memory and one or more processors; The memory is used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method as described in any one of claims 1-6.

9. A storage medium for storing computer-executable instructions, characterized in that, The computer-executable instructions, when executed by a processor, are used to perform the method as described in any one of claims 1-6.

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