Substation environment control system and control method

Abstract

The invention discloses a substation environment control system and method, and relates to the technical field of substation equipment operation environment optimization. The control module obtains first data corresponding to each electrical equipment room in the transformer substation, and for each electrical equipment room, the first data comprises temperature and humidity data of a monitoring point corresponding to the electrical equipment room and voltage and current data of each electrical equipment in the electrical equipment room; the data processing module is connected to the control module and used for receiving the first data acquired by the control module, and for each electrical equipment room, the data processing module is further used for determining a control signal corresponding to the electrical equipment room based on the first data corresponding to the electrical equipment room and sending the control signal to the control module; the control module is further used for controlling the environment adjusting devices corresponding to the electrical equipment rooms based on the control signals corresponding to the electrical equipment rooms. With the characteristics of automation and intellectualization, the frequency and labor intensity of manual inspection are reduced, and the operation and maintenance efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of substation equipment operating environment optimization technology, and in particular to a substation environmental control system and control method. Background Technology

[0002] With the continuous development and intelligent transformation of modern power systems, substations, as key nodes in the power grid, directly affect the reliability and efficiency of the entire grid through their operational stability and safety. In the daily operation of substations, ambient temperature and humidity are crucial factors influencing equipment performance and lifespan. Excessively high or low temperatures, as well as fluctuations in humidity, can lead to decreased insulation performance of electrical equipment, accelerated aging, and even safety accidents such as short circuits and fires. Therefore, accurate and real-time monitoring and control of the substation's internal environment is of paramount importance.

[0003] Currently, environmental temperature and humidity management in substations relies on manual inspections and the use of traditional thermometers and hygrometers. This method is not only inefficient but also makes it difficult to achieve continuous, 24 / 7 monitoring and to respond promptly to environmental changes. Furthermore, manually adjusting air conditioning equipment is not only time-consuming and labor-intensive but also prone to inaccurate or delayed adjustments due to human factors, thus affecting the effectiveness of environmental control. Summary of the Invention

[0004] This application provides a substation environmental control system and control method, which solves the technical problems of low data sampling frequency and insufficient accuracy in traditional manual inspection and temperature and humidity meter monitoring methods, as well as the inefficiency of traditional manual adjustment of air conditioning equipment, which is prone to inaccurate or delayed adjustment due to human factors.

[0005] In a first aspect, embodiments of this application provide a substation environmental control system, including:

[0006] The control module acquires the first data corresponding to each electrical equipment room in the substation. For each electrical equipment room, the first data includes the temperature and humidity data of the monitoring point corresponding to the electrical equipment room and the voltage and current data of each electrical equipment in the electrical equipment room.

[0007] The data processing module, connected to the control module, is used to receive the first data acquired by the control module. For each electrical equipment room, the data processing module is also used to determine the control signal corresponding to the electrical equipment room based on the first data corresponding to the electrical equipment room, and send the control signal to the control module.

[0008] The control module is also used to control the environmental control devices corresponding to each electrical equipment room based on the control signals corresponding to each electrical equipment room. The environmental control devices include air conditioners, fans and dehumidifiers.

[0009] In conjunction with the first aspect, in one possible implementation, the substation environmental control system further includes:

[0010] A smart terminal, connected to a data processing module or control module, is used to acquire initial data and display it visually.

[0011] Secondly, embodiments of this application provide a substation environmental control method, which uses the substation environmental control system in the first aspect or any possible implementation of the first aspect, applied to a control module. The control method includes the following steps:

[0012] Acquire the first data corresponding to each electrical equipment room in the substation. The first data includes the temperature and humidity data of the monitoring point corresponding to the electrical equipment room and the voltage and current data of each electrical device in the electrical equipment room.

[0013] The system receives control signals from the data processing module for each electrical equipment room within the substation. For each electrical equipment room, the control signal is determined by the data processing module based on the first data corresponding to the electrical equipment room.

[0014] Based on the control signals corresponding to each electrical equipment room, the corresponding environmental control devices for each electrical equipment room are controlled respectively. The environmental control devices include air conditioners, fans and dehumidifiers.

[0015] In conjunction with the second aspect, in one possible implementation, obtaining the first data corresponding to each electrical equipment room within the substation includes:

[0016] For each electrical equipment room, the first data corresponding to the electrical equipment room is periodically acquired based on the preset acquisition time interval.

[0017] In conjunction with the second aspect, in one possible implementation, determining the control signal corresponding to the electrical equipment room based on the first data corresponding to the electrical equipment room includes:

[0018] The first data is matched with the boundary conditions in the pre-built digital twin simulation model for the substation to determine the target boundary conditions;

[0019] Based on the defined target boundary conditions and initial data, a rapid temperature and humidity simulation of the electrical equipment room is conducted in a digital twin simulation model to obtain simulation results including cooling load and humidity load.

[0020] Based on the simulation results, control signals corresponding to each electrical equipment room are generated.

[0021] In conjunction with the second aspect, in one possible implementation, the target boundary conditions include the heat transfer coefficient of the enclosure surface of the electrical equipment room, the heat transfer area of ​​the enclosure of the electrical equipment room, the design temperature of the air-conditioned room, the air flow rate entering the electrical equipment room, the relative humidity of the air entering the electrical equipment room, the design relative humidity, and the volumetric heat of water vapor.

[0022] Based on the defined target boundary conditions, a rapid temperature and humidity simulation of the electrical equipment room is conducted in a digital twin simulation model, yielding simulation results including cooling load and humidity load data, including:

[0023] The simulation calculation formula for cooling load is as follows:

[0024] Q F =∑kf(T x,y,z -T n )+ΣU A I A ΔT;

[0025] In the formula, Q F For cooling load, k is the heat transfer coefficient of the enclosure surface of the electrical equipment room, f is the heat transfer area of ​​the enclosure of the electrical equipment room, and T x,y,z The temperature at the monitoring point in the electrical equipment room, T n For air conditioning, the indoor design temperature is U A I represents the voltage of the electrical equipment in the electrical equipment room. A ΔT represents the current of the electrical equipment in the electrical equipment room, and ΔT represents the data acquisition interval.

[0026] The simulation calculation formula for wet load is as follows:

[0027] H F =V J *(H J -H s )*Δh;

[0028] In the formula, H F For wet load, V J H is the airflow rate entering the electrical equipment room. J H is the relative humidity of the air entering the electrical equipment room. s The design relative humidity is given by Δh, which is the volumetric heat of water vapor.

[0029] In conjunction with the second aspect, in one possible implementation, based on simulation results, control signals corresponding to each electrical equipment room are generated, including:

[0030] For each electrical equipment room, determine the air conditioning cooling capacity, fan ventilation to remove excess heat, and dehumidifier dehumidification capacity.

[0031] The control signal is determined based on the cooling load, humidity load, air conditioning cooling capacity, fan ventilation to remove excess heat, and dehumidifier dehumidification capacity.

[0032] The air conditioning cooling capacity of the electrical equipment room is determined based on the rated value of the cooling capacity of a single air conditioner.

[0033] The amount of residual heat removed by the ventilation of the electrical equipment room is determined based on the rated value of the single fan ventilation.

[0034] The dehumidification capacity of the dehumidifier in the electrical equipment room is determined based on the rated dehumidification capacity of a single dehumidifier;

[0035] Among them, the rated value of the cooling capacity of a single air conditioner is a parameter of the equipment;

[0036] The rated value for removing excess heat by a single fan is determined by the following formula:

[0037] Q TF =(L*c*P av *(T x,y,z -T i )) / 3600;

[0038] In the formula, Q TF L is the rated value for removing excess heat by a single fan, c is the rated ventilation volume of a single fan, and P is the specific heat capacity of air. av T is the average bulk density of air. x,y,z The temperature at the monitoring point in the electrical equipment room, T i Temperature values ​​are used for ventilation calculations;

[0039] The rated dehumidification capacity of a single dehumidifier is determined by the following formula:

[0040] H C =V C,B *(H C,B -H x,y,z )*Δh;

[0041] In the formula, H C V is the rated dehumidification capacity of a single dehumidifier. C,B H is the airflow rate of the dehumidifier vent in the electrical equipment room. C,B H represents the relative humidity at the dehumidifier's air vent. x,y,z Δh represents the relative humidity at the monitoring point in the electrical equipment room, and Δh represents the volumetric heat of water vapor.

[0042] In conjunction with the second aspect, in one possible implementation, the ventilation volume of the electrical equipment room is determined by the following method:

[0043] Determine the air volume coefficient for each fan in the electrical equipment room. The air volume coefficient for each fan is determined using the following formula:

[0044] When T w ≤T i The formula for calculating the air volume coefficient of the fan is as follows:

[0045] ε n =(T x,y,z -T n ) / (T x,y,z -T w );

[0046] In the formula, ε n Let T be the air volume coefficient of the nth fan. w For air conditioning, the outdoor design temperature is T i For ventilation calculations, the temperature value T is used. n For air conditioning, the indoor design temperature is T x,y,z The temperature at the monitoring point in the electrical equipment room;

[0047] The ventilation volume of the electrical equipment room is determined based on the air volume coefficient of each fan.

[0048] Determine the coefficient of performance (COP) for each air conditioner in the electrical equipment room. The COP for each air conditioner is determined using the following formula:

[0049] When T w >T i The formula for calculating the coefficient of performance (COP) of an air conditioner is as follows:

[0050] γ n =(T x,y,z -T n ) / (T x,y,z -T K,B );

[0051] In the formula, γ n Let T be the coefficient of performance (COP) of the nth air conditioner. w For air conditioning, the outdoor design temperature is T i For ventilation calculations, the temperature value T is used. n For air conditioning, the indoor design temperature is T x,y,z The temperature at the monitoring point in the electrical equipment room, T K,B The temperature at the air conditioning vent monitoring point;

[0052] The cooling capacity of the air conditioning in the electrical equipment room is determined based on the cooling coefficient of each air conditioner.

[0053] Determine the dehumidification capacity coefficient for each dehumidifier in the electrical equipment room. The dehumidification capacity coefficient for each dehumidifier is determined using the following formula:

[0054] The formula for calculating the dehumidification capacity coefficient of a dehumidifier is as follows:

[0055] β n =(H J -H s ) / (H C,B -H x,y,z );

[0056] In the formula, β n H is the dehumidification capacity coefficient of the nth dehumidifier. J H represents the relative humidity of the air entering the equipment room. s To design relative humidity, T C,B H represents the temperature at the dehumidifier's air vent monitoring point. x,y,z The relative humidity at the monitoring point in the electrical equipment room;

[0057] The dehumidification capacity of the dehumidifiers in the electrical equipment room is determined based on the dehumidification capacity coefficient of each dehumidifier.

[0058] In conjunction with the second aspect, in one possible implementation, the environmental control devices corresponding to each electrical equipment room are controlled based on the control signals corresponding to each electrical equipment room. The environmental control devices include air conditioners, fans, and dehumidifiers, and include:

[0059] For each electrical control room, the control signals corresponding to the electrical equipment rooms are classified, and the air conditioning control data, fan control data, and dehumidifier control data in the control signals are identified.

[0060] The air conditioner in the electrical equipment room is controlled based on the air conditioning control data, the fan is controlled based on the fan control data, and the dehumidifier is controlled based on the dehumidifier control data.

[0061] One or more technical solutions provided in the embodiments of this application have at least the following technical effects:

[0062] The substation environmental control system provided in this application includes a control module and a data processing module. The control module is responsible for real-time acquisition of primary data from each electrical equipment room within the substation. This primary data includes temperature and humidity information at monitoring points, as well as voltage and current data from electrical equipment, laying a solid data foundation for environmental regulation. The data processing module, relying on algorithms, integrates the primary data from each electrical equipment room, accurately analyzes it, and generates the control signals required for each room. These signals are then transmitted to the control module to guide the precise operation of the environmental regulation devices. By real-time monitoring of the temperature and humidity conditions and the operating status of electrical equipment within the substation, this control system can keenly detect potential environmental anomalies or equipment malfunctions, effectively preventing safety accidents caused by unsuitable environments or equipment overheating, and ensuring the safe and stable operation of the substation. Simultaneously, this control system fully considers the differences between different electrical equipment rooms, flexibly adjusting control signals to adapt to diverse environmental needs. Based on the output of the data processing module, the control module precisely controls the environmental regulation devices such as air conditioners, fans, and dehumidifiers in each electrical equipment room, ensuring that the substation's internal environment remains optimal as seasonal and climatic conditions change. This precise control signal not only optimizes equipment operating efficiency but also reduces unnecessary energy consumption, achieving the goal of energy conservation and emission reduction. Therefore, the substation environmental control system provided in this application, with its automated and intelligent features, reduces the frequency and labor intensity of manual inspections, and improves operation and maintenance efficiency. At the same time, while ensuring the safe and stable operation of the substation, this control system achieves the dual goals of energy conservation and emission reduction, as well as lower maintenance costs, making a significant contribution to the sustainable development of the power industry. Attached Figure Description

[0063] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0064] Figure 1 A process flow diagram of the substation environmental control method provided in the embodiments of this application;

[0065] Figure 2 This is a schematic diagram of the structure of the substation environmental control system provided in the embodiments of this application;

[0066] Figure 3 A schematic diagram illustrating the matching of first data provided for embodiments of this application with boundary conditions in a pre-constructed digital twin simulation model for a substation;

[0067] Figure 4 The air conditioning and fan operation strategy curves provided in the embodiments of this application;

[0068] Figure 5 The dehumidifier operation strategy curve provided in the embodiments of this application;

[0069] Figure 6 A schematic diagram illustrating how the control module, as provided in this embodiment, distributes received control commands;

[0070] Figure 7 This is a schematic diagram illustrating how the control module in this embodiment transmits the collected data to the data processing module using a multiple access transmission method. Detailed Implementation

[0071] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0072] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0073] This application provides a substation environmental control system, such as... Figure 2 As shown. The substation environmental control system includes a control module and a data processing module.

[0074] The control module acquires the first data corresponding to each electrical equipment room in the substation. For each electrical equipment room, the first data includes the temperature and humidity data of the monitoring point corresponding to the electrical equipment room and the voltage and current data of each electrical device in the electrical equipment room.

[0075] The data processing module is connected to the control module and is used to receive the first data acquired by the control module. For each electrical equipment room, the data processing module is also used to determine the control signal corresponding to the electrical equipment room based on the first data corresponding to the electrical equipment room, and send the control signal to the control module.

[0076] The control module is also used to control the environmental control devices corresponding to each electrical equipment room based on the control signals corresponding to each electrical equipment room. The environmental control devices include air conditioners, fans and dehumidifiers.

[0077] Specifically, the data processing module receives the first data collected by the control module, including the ambient temperature and humidity at each monitoring point in each electrical equipment room. It then judges this data according to preset standards. If the current ambient temperature exceeds the preset upper limit, the data processing module generates a corresponding control signal and automatically activates the air conditioning to cool the environment and maintain it within a suitable temperature range. Similarly, if the ambient humidity exceeds the preset upper limit, the data processing module also generates a corresponding control signal to activate the dehumidifier to dehumidify the environment and ensure suitable humidity levels.

[0078] Furthermore, each electrical equipment room includes a main transformer room, a capacitor room, a secondary equipment room, a switchgear room, and a GIS room.

[0079] It should be noted that the substation environmental control system provided in this application includes a control module and a data processing module. The control module is responsible for real-time acquisition of primary data from each electrical equipment room within the substation. This primary data includes temperature and humidity information at monitoring points, as well as voltage and current data from electrical equipment, laying a solid data foundation for environmental regulation. The data processing module, relying on algorithms, integrates the primary data from the electrical equipment rooms, accurately analyzes and generates the control signals required by each electrical equipment room. These signals are then transmitted to the control module to guide the precise operation of the environmental regulation devices. By real-time monitoring of the temperature and humidity conditions and the operating status of electrical equipment within the substation, this control system can keenly detect potential environmental anomalies or equipment malfunctions, effectively preventing safety accidents caused by unsuitable environments or equipment overheating, and ensuring the safe and stable operation of the substation. Simultaneously, this control system fully considers the differences between different electrical equipment rooms, flexibly adjusting control signals to adapt to diverse environmental needs. Based on the output of the data processing module, the control module precisely controls the air conditioning, fans, dehumidifiers, and other environmental regulation devices in each electrical equipment room, ensuring that the substation's internal environment remains optimal as seasonal and climatic conditions change. This precise control signal not only optimizes equipment operating efficiency but also reduces unnecessary energy consumption, achieving the goal of energy conservation and emission reduction. Therefore, the substation environmental control system provided in this application, with its automated and intelligent features, reduces the frequency and labor intensity of manual inspections, and improves operation and maintenance efficiency. At the same time, while ensuring the safe and stable operation of the substation, this control system achieves the dual goals of energy conservation and emission reduction, as well as lower maintenance costs, making a significant contribution to the sustainable development of the power industry.

[0080] The smart terminal is connected to the data processing module or control module to acquire the initial data and display it visually.

[0081] Specifically, the intelligent terminal provides a user interface that supports remote network monitoring and manual adjustment functions. Users can view real-time environmental data within the substation through the intelligent control terminal, including temperature, humidity, and the operating status of various electrical equipment in each electrical equipment room. The intelligent control terminal not only provides intuitive data display but also supports manual adjustment and parameter setting to meet different monitoring and management needs. This design makes the system operation more flexible and improves the user experience.

[0082] Specifically, multiple temperature and humidity sensors are installed in various key areas within the substation. These key areas include the exterior of each electrical equipment room, the air vents of air conditioners, fans, and dehumidifiers inside each electrical equipment room, the cable trenches at the bottom of each electrical equipment room, and the surfaces and interiors of each electrical equipment inside each electrical equipment room.

[0083] It should be noted that by covering these key areas, this application enables the substation environmental control system to achieve comprehensive monitoring of environmental parameters within the substation. As a crucial channel for power transmission, the temperature and humidity within cable trenches directly affect the insulation performance and operational safety of cables. Monitoring the temperature and humidity of electrical equipment surfaces and interiors helps to promptly detect problems such as overheating or moisture absorption. Monitoring the air vents of air conditioners, fans, and dehumidifiers ensures the effective operation of these devices. Monitoring outdoor areas helps to understand the impact of the external environment on the substation's internal environment, allowing for appropriate measures to be taken. This comprehensive monitoring facilitates the timely detection and resolution of problems, protecting the safe operation of the substation.

[0084] In this embodiment of the application, a substation environmental control method is provided, such as... Figures 1 to 7 As shown, the control method applied to the control module includes the following steps S1-S3:

[0085] S1: Obtain the first data corresponding to each electrical equipment room in the substation. The first data includes the temperature and humidity data of the monitoring point corresponding to the electrical equipment room and the voltage and current data of each electrical device in the electrical equipment room.

[0086] It should be noted that this application, through temperature and humidity sensors installed in key areas of the electrical equipment room, can acquire and analyze the temperature and humidity data of these areas in real time, as well as the voltage and current data of the electrical equipment in real time, which helps the system analyze the operating status and performance of the equipment.

[0087] Furthermore, the data collected by the control module includes, for example: Figure 7 As shown, this data is then transmitted to the data processing module for processing.

[0088] Specifically, the temperature and humidity sensor collects both temperature and humidity data simultaneously. The temperature and humidity at the monitoring point are represented by T0 and T1, respectively. x,y,z and H x,y,z The expression is given by (x, y, z), where (x, y, z) represents the three-dimensional spatial coordinates of the monitoring point.

[0089] Collect voltage and current data of electrical equipment in each electrical equipment room. Voltage data is represented by U. An In this representation, A represents the type of electrical equipment being monitored, and n represents the monitoring point number within that type. Similarly, current data is represented by I... An This indicates that A represents the type of electrical equipment being monitored, and n represents the monitoring point number under that type.

[0090] Collect temperature, humidity, and airflow data at the air outlets of air conditioners, fans, and dehumidifiers. Relative humidity at the air conditioner air outlet monitoring point is expressed as H0. K,B The relative humidity at the fan outlet monitoring point is indicated by H. F,BThe relative humidity at the dehumidifier's air vent monitoring point is indicated by H. C,B It indicates that the temperature at the air conditioning vent monitoring point is expressed in T. K,B The temperature at the fan outlet monitoring point is indicated by T. F,B The temperature at the dehumidifier's air vent monitoring point is indicated by T. C,B The air volume of the fan outlet is expressed in V. F,B The airflow rate of a dehumidifier vent is indicated by V. C,B The symbols indicate that K represents air conditioning, F represents fan, C represents dehumidifier, and B represents monitoring point number.

[0091] S2: Receive the control signals corresponding to each electrical equipment room in the substation sent by the data processing module. The control signal corresponding to each electrical equipment room is determined by the data processing module based on the first data corresponding to the electrical equipment room.

[0092] It should be noted that in step S2, the data processing module can intelligently analyze and judge environmental parameters. This intelligent analysis not only improves the accuracy and efficiency of the judgment, but also enables the system to flexibly respond to changes in different environments and equipment states.

[0093] Furthermore, the data processing module sends the processed data to the intelligent control terminal in real time, enabling users to understand the changes in environmental parameters and equipment status within the substation at any time. This real-time feedback and monitoring mechanism helps to identify and resolve problems promptly.

[0094] The data processing module generates control signals for each electrical equipment room based on the collected first data, and transmits the control signals to the control module to execute the corresponding operations.

[0095] S3: Control the environmental control devices corresponding to each electrical equipment room based on the control signals corresponding to each electrical equipment room. The environmental control devices include air conditioners, fans and dehumidifiers.

[0096] It should be noted that in step S3, the control module receives and executes the control signals from the data processing module, which enables precise control of the corresponding air conditioners, fans, and dehumidifiers in each electrical device room, helping to ensure that environmental parameters can be quickly restored to the preset standard range.

[0097] In this embodiment of the application, obtaining the first data corresponding to each electrical equipment room in the substation includes:

[0098] For each electrical equipment room, the first data corresponding to the electrical equipment room is periodically acquired based on the preset acquisition time interval.

[0099] Specifically, each data collection time interval was set to 1 second.

[0100] It should be noted that setting a 1-second data acquisition interval ensures that the system can acquire the status of all monitored parameters in each electrical equipment room almost in real time. Any abnormal voltage fluctuations, current overloads, abnormal temperature and humidity, or changes in equipment operating status can be quickly captured and recorded by the system. This efficient monitoring mechanism enables us to take timely countermeasures, effectively preventing potential accidents or damage, thereby ensuring the safe and stable operation of the electrical equipment room.

[0101] In this embodiment of the application, determining the control signal corresponding to the electrical equipment room based on the first data corresponding to the electrical equipment room includes:

[0102] S201: Match the first data with the boundary conditions in the pre-built digital twin simulation model for the substation to determine the target boundary conditions.

[0103] S202: Based on the determined target boundary conditions and initial data, conduct rapid temperature and humidity simulation of the electrical equipment room in the digital twin simulation model to obtain simulation results including cold load and wet load.

[0104] S203: Based on the simulation results, generate control signals corresponding to each electrical equipment room.

[0105] It should be noted that this application matches the first data collected in real time with the boundary conditions in the digital twin simulation model. By using the digital twin simulation model, combined with the first data collected in real time and the determined target boundary conditions, the temperature and humidity change process of the electrical equipment room can be accurately simulated.

[0106] This application utilizes a digital twin simulation model for rapid temperature and humidity simulation, enabling the prediction of cooling and humidity loads in electrical equipment rooms within a short time. This rapid response capability allows the system to adjust control signals promptly to cope with sudden environmental changes and ensure the stable operation of the electrical equipment rooms. Control signals generated based on the simulation results can be customized to the specific needs of each electrical equipment room. This precise control not only effectively reduces energy consumption but also improves energy utilization efficiency and reduces unnecessary waste. Through the digital twin simulation model, users can remotely monitor and predict the environmental conditions of electrical equipment rooms without entering the site, reducing operation and maintenance costs, improving operation and maintenance efficiency, and also reducing the risks that may arise from improper human operation.

[0107] In this embodiment of the application, the target boundary conditions include the heat transfer coefficient of the enclosure surface of the electrical equipment room, the heat transfer area of ​​the enclosure structure of the electrical equipment room, the design temperature of the air-conditioned room, the air flow rate entering the electrical equipment room, the relative humidity of the air entering the electrical equipment room, the design relative humidity, and the volumetric heat of water vapor.

[0108] Based on the defined target boundary conditions, a rapid temperature and humidity simulation of the electrical equipment room is conducted in a digital twin simulation model, yielding simulation results including cooling load and humidity load data, including:

[0109] The simulation calculation formula for cooling load is as follows:

[0110] Q F =∑kf(T x,y,z -T n )+∑U A I A ΔT.

[0111] In the formula, Q F For cooling load, k is the heat transfer coefficient of the enclosure surface of the electrical equipment room, f is the heat transfer area of ​​the enclosure of the electrical equipment room, and T x,y,z The temperature at the monitoring point in the electrical equipment room, T n For air conditioning, the indoor design temperature is U A I represents the voltage of the electrical equipment in the electrical equipment room. A ΔT represents the current of the electrical equipment in the electrical equipment room, and ΔT represents the data acquisition time interval.

[0112] The simulation calculation formula for wet load is as follows:

[0113] H F =V J *(H J -H s )*Δh.

[0114] In the formula, H F For wet load, V J H is the airflow rate entering the electrical equipment room. J H is the relative humidity of the air entering the electrical equipment room. s The design relative humidity is given by Δh, which is the volumetric heat of water vapor.

[0115] It should be noted that the simulation calculation formulas for cooling and humidity loads comprehensively consider multiple key factors affecting the electrical equipment room environment, such as heat transfer from the building envelope, equipment heating, airflow, and humidity changes. This comprehensive environmental simulation helps to more accurately predict temperature and humidity changes in the electrical equipment room under different operating conditions. Because the simulation model can perform rapid simulations based on real-time acquired data, it can reflect changes in the electrical equipment room environment in real time and quickly generate corresponding cooling and humidity load data. This real-time and dynamic response capability allows maintenance personnel to adjust control strategies promptly to cope with emergencies.

[0116] In this embodiment of the application, based on simulation results, control signals corresponding to each electrical equipment room are generated, including...

[0117] For each electrical equipment room, determine the air conditioning cooling capacity, the fan ventilation to remove excess heat, and the dehumidifier dehumidification capacity.

[0118] The control signal is determined based on the cooling load, humidity load, air conditioning cooling capacity, fan ventilation to remove excess heat, and dehumidifier dehumidification capacity.

[0119] The air conditioning cooling capacity of the electrical equipment room is determined based on the rated value of the cooling capacity of a single air conditioner.

[0120] The amount of residual heat removed by the ventilation of the electrical equipment room is determined based on the rated value of the single fan ventilation for removing residual heat.

[0121] The dehumidification capacity of the dehumidifier in the electrical equipment room is determined based on the rated dehumidification capacity of a single dehumidifier.

[0122] The rated cooling capacity of a single air conditioner is a parameter of the equipment.

[0123] The rated value for removing excess heat by a single fan is determined by the following formula:

[0124] Q TF =(L*c*P av *(T x,y,z -T i )) / 3600.

[0125] In the formula, Q TF L is the rated value for removing excess heat by a single fan, c is the rated ventilation volume of a single fan, and P is the specific heat capacity of air. av T is the average bulk density of air. x,y,z The temperature at the monitoring point in the electrical equipment room, T i The temperature value is used for ventilation calculation.

[0126] The rated dehumidification capacity of a single dehumidifier is determined by the following formula:

[0127] H C =V C,B *(H C,B -H x,y,z )*Δh.

[0128] In the formula, H C V is the rated dehumidification capacity of a single dehumidifier. C,B H is the airflow rate of the dehumidifier vent in the electrical equipment room. C,B H represents the relative humidity at the dehumidifier's air vent. x,y,z Δh represents the relative humidity at the monitoring point in the electrical equipment room, and Δh represents the volumetric heat of water vapor.

[0129] It should be noted that by combining simulation results with equipment parameters, this application can accurately determine the required air conditioning cooling capacity, fan ventilation to remove excess heat, and dehumidifier dehumidification capacity for each electrical equipment room. This precise control helps to maintain each electrical equipment room in the optimal operating environment, extend equipment life, and improve operating efficiency.

[0130] In this embodiment of the application, the ventilation volume of the electrical equipment room is determined by the following method:

[0131] Determine the air volume coefficient for each fan in the electrical equipment room. The air volume coefficient for each fan is determined using the following formula:

[0132] When T w ≤T i The formula for calculating the air volume coefficient of the fan is as follows:

[0133] ε n =(T x,y,z -T n ) / (T x,y,z -T w ).

[0134] In the formula, ε n Let T be the air volume coefficient of the nth fan. w For air conditioning, the outdoor design temperature is T i For ventilation calculations, the temperature value T is used. n For air conditioning, the indoor design temperature is T x,y,z The temperature at the monitoring point in the electrical equipment room.

[0135] The ventilation volume of the electrical equipment room is determined based on the air volume coefficient of each fan.

[0136] Determine the coefficient of performance (COP) for each air conditioner in the electrical equipment room. The COP for each air conditioner is determined using the following formula:

[0137] When T w >T i The formula for calculating the coefficient of performance (COP) of an air conditioner is as follows:

[0138] γ n =(T x,y,z -T n ) / (T x,y,z -T K,B ).

[0139] In the formula, γ n Let T be the coefficient of performance (COP) of the nth air conditioner. w For air conditioning, the outdoor design temperature is T i For ventilation calculations, the temperature value T is used. nFor air conditioning, the indoor design temperature is T x,y,z The temperature at the monitoring point in the electrical equipment room, T K,B This refers to the temperature at the air conditioning vent monitoring point.

[0140] The cooling capacity of the air conditioning in the electrical equipment room is determined based on the coefficient of performance (COP) of each air conditioner.

[0141] Determine the dehumidification capacity coefficient for each dehumidifier in the electrical equipment room. The dehumidification capacity coefficient for each dehumidifier is determined using the following formula:

[0142] The formula for calculating the dehumidification capacity coefficient of a dehumidifier is as follows:

[0143] β n =(H J -H s ) / (H C,B -H x,y,z ).

[0144] In the formula, β n H is the dehumidification capacity coefficient of the nth dehumidifier. J H represents the relative humidity of the air entering the equipment room. s To design relative humidity, T C,B H represents the temperature at the dehumidifier's air vent monitoring point. x,y,z The relative humidity at the monitoring point in the electrical equipment room.

[0145] The dehumidification capacity of the dehumidifiers in the electrical equipment room is determined based on the dehumidification capacity coefficient of each dehumidifier.

[0146] It should be noted that this application, by accurately calculating the operating requirements of air conditioners, fans, and dehumidifiers in each electrical equipment room, can avoid over-allocation or under-allocation of resources. This helps optimize resource utilization and reduce energy consumption and operation and maintenance costs. At the same time, it can also reduce the risk of wear and tear and failure caused by excessive operation of air conditioners, fans, and dehumidifiers.

[0147] like Figure 4 As shown, when T w ≤T i When the fan is activated, the fan operation strategy is as follows:

[0148]

[0149] Among them, T w For air conditioning, the outdoor design temperature is T i For the temperature value used in ventilation calculations, Q TF Q is the rated value for removing excess heat by a single fan. F For cooling load, ε n Let L be the air volume coefficient of the nth fan, and L be the rated ventilation volume of a single fan.

[0150] The ventilation volume of the electrical equipment room at any given moment is the sum of the real-time ventilation volumes of the n fans at that moment.

[0151] When the outdoor design temperature of the air conditioner is higher than the ventilation calculation temperature, start the air conditioner and turn off the fan.

[0152] When T w >T i When the air conditioner is turned on, the air conditioner operation strategy is as follows:

[0153]

[0154] Among them, T w For air conditioning, the outdoor design temperature is T i The temperature value is used for ventilation calculations, R is the rated cooling capacity of a single air conditioner, and Q is the temperature value. F For cooling load, γ n Let be the coefficient of performance (COP) of the nth air conditioner.

[0155] The cooling capacity of the air conditioning in the electrical equipment room at any given time is the sum of the real-time cooling capacities of the n air conditioners at that time.

[0156] like Figure 5 As shown, the dehumidifier's operating strategy is as follows:

[0157]

[0158] Among them, H C H represents the rated dehumidification capacity of a single dehumidifier. F For wet load, β n Let be the dehumidification capacity coefficient of the nth dehumidifier.

[0159] The dehumidification capacity of the dehumidifier in the electrical equipment room at any given time is the sum of the real-time dehumidification capacities of the n dehumidifiers at that time.

[0160] This application, through the coordinated control of air conditioners, fans, and dehumidifiers, ensures that each air conditioner, fan, and dehumidifier is precisely adjusted according to the current cooling load, humidity load, air conditioning cooling capacity, fan ventilation to remove excess heat, and dehumidifier dehumidification requirements. This avoids over- or under-operation of any single device, thereby improving the accuracy of environmental control.

[0161] It should be noted that, as Figure 6 As shown, the environmental control devices for each electrical equipment room are controlled based on the control signals corresponding to each electrical equipment room. The environmental control devices include air conditioners, fans, and dehumidifiers.

[0162] For each electrical control room, the control signals corresponding to the electrical equipment rooms are classified, and the air conditioning control data, fan control data, and dehumidifier control data in the control signals are identified.

[0163] The air conditioner in the electrical equipment room is controlled based on the air conditioning control data, the fan is controlled based on the fan control data, and the dehumidifier is controlled based on the dehumidifier control data.

[0164] After receiving control data, air conditioners, fans, and dehumidifiers change their operating status. Upon receiving control data, the air conditioner adjusts its cooling or heating mode according to preset temperature standards to maintain the indoor temperature within a comfortable range. The dehumidifier operates according to humidity standards to ensure suitable indoor humidity and prevent discomfort or damage caused by dampness. Control signals corresponding to the electrical equipment room are categorized so that each device can operate with minimal energy consumption while meeting environmental requirements. For example, when the temperature approaches a preset value, the air conditioner may automatically reduce its operating power or switch to energy-saving mode; after humidity is controlled, the dehumidifier will automatically reduce its operating time or power.

[0165] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0166] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A substation environmental control system, It is characterized in that include: The control module obtains first data corresponding to each electrical equipment room in the substation, wherein for each electrical equipment room, the first data includes temperature and humidity data of a monitoring point corresponding to the electrical equipment room and voltage and current data of each electrical equipment in the electrical equipment room; a data processing module connected to the control module, and used to receive the first data acquired by the control module; for each electrical equipment room, the data processing module is further used to determine a control signal corresponding to the electrical equipment room based on the first data corresponding to the electrical equipment room, and send the control signal to the control module; The control module is also used to control the environmental conditioning devices corresponding to each electrical equipment room based on the control signals corresponding to each electrical equipment room. The environmental conditioning devices include air conditioners, fans and dehumidifiers.

2. The substation environment control system according to claim 1, It is characterized in that Also includes: The intelligent terminal is connected to the data processing module or the control module, and is used to obtain the first data and perform visual display.

3. A substation environment control method, It is characterized in that The substation environment control system according to any one of claims 1 to 2 is applied to a control module, and the control method comprises the following steps: Acquire first data corresponding to each electrical equipment room in the substation, the first data including temperature and humidity data of a monitoring point corresponding to the electrical equipment room and voltage and current data of each electrical equipment in the electrical equipment room; Receiving control signals corresponding to each electrical equipment room in the substation sent by the data processing module, wherein, for each electrical equipment room, the control signal corresponding to the electrical equipment room is determined by the data processing module based on the first data corresponding to the electrical equipment room; Based on the control signals corresponding to the electrical equipment rooms, the environment adjustment devices corresponding to the electrical equipment rooms are respectively controlled, and the environment adjustment devices include air conditioners, fans and dehumidifiers.

4. The substation environment control method according to claim 3, It is characterized in that Acquiring first data corresponding to each electrical equipment room in the substation includes: For each electrical equipment room, first data corresponding to the electrical equipment room is periodically acquired based on a preset collection time interval corresponding to the electrical equipment room.

5. The substation environment control method according to claim 4, It is characterized in that Determining a control signal corresponding to the electrical equipment room based on first data corresponding to the electrical equipment room includes: Matching the first data with boundary conditions in a pre-built digital twin simulation model for the substation to determine target boundary conditions; Based on the determined target boundary conditions and the first data, a rapid simulation of temperature and humidity in the electrical equipment room is carried out in the digital twin simulation model to obtain simulation results including cooling load and humidity load; Based on the simulation results, control signals corresponding to each electrical equipment room are generated.

6. The substation environment control method according to claim 5, It is characterized in that The target boundary conditions include the heat transfer coefficient of the enclosure surface of the electrical equipment room, the heat transfer area of ​​the enclosure of the electrical equipment room, the design temperature of the air-conditioning room, the air flow rate entering the electrical equipment room, the relative humidity of the air entering the electrical equipment room, the design relative humidity and the volumetric heat of water vapor; Based on the determined target boundary conditions, a rapid simulation of temperature and humidity in the electrical equipment room is carried out in the digital twin simulation model to obtain simulation results containing cooling load and moisture load data, including: The simulation calculation formula for cooling load is as follows: Q F =∑kf(T x,y,z -T n )+∑U A I A ΔT; In the formula, Q F is the cooling load, k is the heat transfer coefficient of the enclosure structure surface of the electrical equipment room, f is the heat transfer area of ​​the enclosure structure of the electrical equipment room, T x,y,z is the temperature at the monitoring point of the electrical equipment room, T n The indoor design temperature for air conditioning, U A is the voltage of the electrical equipment in the electrical equipment room, I A is the current of the electrical equipment in the electrical equipment room, ΔT is the time interval of data collection; The simulation calculation formula for wet load is as follows: H F =V J *(H J -H s )*Δh; In the formula, H F is the wet load, V J is the air flow rate entering the electrical equipment room, H J is the relative humidity of the air entering the electrical equipment room, H s is the design relative humidity, and Δh is the volumetric heat of water vapor.

7. The substation environment control method according to claim 6, It is characterized in that Based on the simulation results, control signals corresponding to each electrical equipment room are generated, including: For each electrical equipment room, determine the air conditioning cooling capacity, fan ventilation to eliminate excess heat, and dehumidification capacity of the electrical equipment room; Determine the control signal based on the cooling load, wet load, air conditioning cooling capacity, fan ventilation to eliminate excess heat and dehumidifier dehumidification capacity; Determine the air conditioning cooling capacity of the electrical equipment room based on the rated cooling capacity of a single air conditioner; Determine the fan ventilation for electrical equipment rooms to remove excess heat based on the rating of a single fan ventilation to remove excess heat; Determine the dehumidification capacity of the dehumidifier in the electrical equipment room based on the rated value of the dehumidification capacity of a single dehumidifier; Among them, the rated value of the cooling capacity of a single air conditioner is an equipment parameter; The rated value of a single fan for ventilation and removal of excess heat is determined by the following formula: Q TF =(L*c*P av *(T x,y,z -T i )) / 3600; In the formula, Q TF is the rated value of a single fan for removing excess heat, L is the rated value of the ventilation volume of a single fan, c is the specific heat capacity of air, P av is the average bulk density of air, T x,y,z is the temperature at the monitoring point of the electrical equipment room, T i Calculate the temperature value for ventilation; The rated value of the dehumidification capacity of a single dehumidifier is calculated and determined by the following formula: H C =V C,B *(H C,B -H x,y,z )*Δh; In the formula, H C is the rated value of dehumidification capacity of a single dehumidifier, V C,B is the air flow rate of the dehumidifier outlet in the electrical equipment room, H C,B is the relative humidity at the dehumidifier outlet, H x,y,z is the relative humidity at the monitoring point in the electrical equipment room, and Δh is the volumetric heat of water vapor.

8. The substation environment control method according to claim 7, It is characterized in that The ventilation rate of the electrical equipment room is determined by the following method: Determine the air volume coefficient corresponding to each fan in the electrical equipment room, where the air volume coefficient of each fan is determined by the following formula: When T w ≤T i When the fan air volume coefficient is calculated, the formula is as follows: ε n =(T x,y,z -T n ) / (T x,y,z -T w ); In the formula, ε n is the air volume coefficient of the nth fan, T w The outdoor design temperature for air conditioning, T i The value of ventilation temperature, T n is the indoor design temperature for air conditioning, T x,y,z is the temperature at the monitoring point in the electrical equipment room; Determine the ventilation volume of the electrical equipment room based on the air volume coefficient of each fan; Determine the refrigeration coefficient corresponding to each air conditioner in the electrical equipment room, where the refrigeration coefficient of each air conditioner is determined by the following formula: When T w >T i When the air conditioning refrigeration coefficient is calculated as follows: γ n =(T x,y,z -T n ) / (T x,y,z -T K,B ); In the formula, γ n is the refrigeration coefficient of the nth air conditioner, T w The outdoor design temperature for air conditioning, T i The value of ventilation temperature, T n is the indoor design temperature for air conditioning, T x,y,z is the temperature at the monitoring point of the electrical equipment room, T K,B is the temperature at the air outlet monitoring point of the air conditioner; Determine the air conditioning cooling capacity of the electrical equipment room based on the cooling coefficient of each air conditioner; Determine the dehumidification coefficient corresponding to each dehumidifier in the electrical equipment room, wherein for each dehumidifier, the dehumidification coefficient of the dehumidifier is determined by the following formula: The calculation formula of the dehumidifier's dehumidification coefficient is as follows: β n =(H J -H s ) / (H C,B -H x,y,z ); In the formula, β n is the dehumidification coefficient of the nth dehumidifier, H J is the relative humidity of the air entering the equipment room, H s is the design relative humidity, T C,B is the temperature at the monitoring point of the dehumidifier outlet, H x,y,z is the relative humidity at the monitoring point in the electrical equipment room; The dehumidification capacity of the dehumidifier in the electrical equipment room is determined based on the dehumidification capacity coefficient of each dehumidifier.

9. The substation environment control method according to claim 3, It is characterized in that Based on the control signals corresponding to the electrical equipment rooms, the environmental conditioning devices corresponding to the electrical equipment rooms are respectively controlled, and the environmental conditioning devices include air conditioners, fans and dehumidifiers, including: For each electrical control room, classify the control signals corresponding to the electrical equipment room, and determine the air conditioning control data, fan control data, and dehumidifier control data in the control signals; The air conditioner in the electrical equipment room is controlled based on the air conditioner control data, the fan is controlled based on the fan control data, and the dehumidifier is controlled based on the dehumidifier control data.

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