Construction measurement and calculation system of low-carbon transformer substation

Abstract

The invention discloses a construction measurement and calculation system of a low-carbon transformer substation, and relates to the technical field of transformer substation low-carbon construction, the construction measurement and calculation system comprises an acquisition module, an evaluation module and an analysis module, the modules are connected: the acquisition module is used for acquiring equipment performance information of a historical transformer substation, and the equipment performance information comprises transformer performance data and circuit breaking operation data; the evaluation module is used for constructing a substation optimization construction model based on a machine learning algorithm according to the transformer performance data and the open circuit operation data, and generating a substation performance evaluation coefficient; the analysis module is used for performing comparative analysis on the substation performance evaluation coefficient and a substation performance evaluation threshold value, and optimizing the substation construction process according to a comparative analysis result; the energy utilization efficiency of the transformer substation is improved through optimization design, and carbon emission is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of low-carbon construction of substations, and more specifically, to a construction and calculation system for low-carbon substations. Background Art

[0002] More and more substations are beginning to adopt high-efficiency equipment, renewable energy and intelligent control systems to reduce carbon emissions and improve energy efficiency. They use high-efficiency transformers, low-loss equipment and optimized cooling systems to reduce energy consumption and reduce operation and maintenance costs. They integrate smart grid technology and advanced data analysis tools to achieve real-time monitoring, automatic fault detection and load management, improving system reliability and operating efficiency. Emerging technologies such as high-temperature superconducting materials, energy storage systems and dynamic load management are being gradually applied, further promoting the development of low-carbon substations.

[0003] The equipment used in traditional substations, such as transformers and circuit breakers, often have low energy efficiency, resulting in large energy losses. Transformers generate additional heat during operation, resulting in energy losses. Auxiliary facilities such as cooling systems, lighting systems and monitoring equipment in traditional substations usually consume a lot of electricity, which increases overall energy consumption. Traditional substations may not be able to effectively manage grid loads, especially during high demand periods, and may be overloaded, resulting in power outages. Therefore, an efficient and low-carbon substation construction measurement system is needed to optimize the design, improve the energy efficiency of substations, and reduce carbon emissions.

[0004] In view of the above problems, the present invention proposes a solution. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a construction and measurement system for a low-carbon substation, which can improve the energy utilization efficiency of the substation and reduce carbon emissions.

[0006] To achieve the above object, the present invention provides the following technical solutions: A construction and measurement system for a low-carbon substation includes an acquisition module, an evaluation module, and an analysis module, and the modules are connected: the acquisition module is used to collect equipment performance information of historical substations, and the equipment performance information includes transformer performance data and circuit breaker operation data; the evaluation module is used to construct a substation optimization construction model based on a machine learning algorithm according to the transformer performance data and the circuit breaker operation data, and generate a substation performance evaluation coefficient; the analysis module is used to compare and analyze the substation performance evaluation coefficient with the substation performance evaluation threshold, and optimize the substation construction process according to the comparison and analysis results.

[0007] In a preferred embodiment, the transformer performance data includes a transformer overload factor and a transformer loss factor, and the circuit breaker operation data includes a circuit breaker operation load factor.

[0008] In a preferred embodiment, the specific method for obtaining the transformer overload coefficient is as follows: obtain the rated temperature difference of the transformer within a preset period; obtain the current and resistance values ​​of the transformer, calculate the calorific value according to Joule's law, and obtain the actual temperature difference of the transformer within the preset period in combination with the heat dissipation capacity of the transformer; obtain the cooling factor of the transformer according to the cooling system efficiency of the transformer, and obtain the cooling adjustment coefficient in combination with the actual temperature difference; obtain the rated load time within the preset period, subtract the preset period from the rated load time to obtain the overload time, and obtain the load cycle adjustment coefficient in combination with the load cycle adjustment factor; obtain the ambient temperature and rated temperature during actual operation of the substation, subtract the ambient temperature during actual operation from the rated temperature to obtain the temperature difference, and obtain the environmental adjustment coefficient in combination with the environmental adjustment factor; obtain the preliminary transformer overload coefficient by combining the rated temperature difference and the actual temperature difference with the set temperature difference coefficient, and adjust the preliminary transformer overload coefficient according to the cooling adjustment coefficient, the load cycle adjustment coefficient and the environmental adjustment coefficient to obtain the transformer overload coefficient.

[0009] In a preferred embodiment, the specific method for obtaining the transformer loss coefficient is as follows: obtain the rated current and resistance value of the transformer, combine the rated voltage value of the transformer, and calculate the transformer load loss according to a preset load loss formula; obtain the current and voltage of the transformer when it is no-load, combine the power factor, and calculate the transformer no-load loss according to a preset no-load loss formula; comprehensively consider the load loss and no-load loss to obtain the transformer loss coefficient.

[0010] In a preferred embodiment, the specific method for obtaining the circuit breaker operation load factor is as follows: obtaining the rated temperature of the circuit breaker and the ambient temperature during actual operation, and taking the difference between the ambient temperature during actual operation and the rated temperature as the temperature change; recording the total number of operations of the circuit breaker within a preset time period; dividing the total number of operations by the preset time period to obtain the operation frequency of the circuit breaker; multiplying the total number of operations by the operation frequency to obtain the operation load, and combining the temperature change and the rated temperature of the circuit breaker to obtain the circuit breaker operation load factor according to the preset circuit breaker operation load factor calculation formula.

[0011] In a preferred embodiment, the specific steps for optimizing the substation construction process are as follows: comparing the substation performance evaluation coefficient with the substation performance evaluation threshold; when the substation performance evaluation coefficient is greater than the substation performance evaluation threshold, there is no need to optimize the substation model, and continuously monitor the historical substation performance information; when the substation performance evaluation coefficient is less than the substation performance evaluation threshold, the substation model is immediately optimized.

[0012] The technical effects and advantages of the construction and calculation system of a low-carbon substation of the present invention are as follows: 1. The present invention can maximize the efficiency of equipment in the substation and reduce power loss through advanced design methods and modeling technologies. The system can optimize various parts of the substation to minimize energy losses in transformers, switchgear and lines; integrate high-efficiency transformers and switchgear to improve energy conversion and transmission efficiency, and use low-loss transformer materials and high-efficiency cooling systems to significantly reduce energy waste; the system design can flexibly integrate various renewable energy technologies, support different types of energy supply and demand, and can be customized and adjusted according to the specific needs of different regions and application scenarios, thereby improving the adaptability and flexibility of the system.

[0013] 2. Through optimized design and application of high-efficiency equipment, the present invention can significantly reduce carbon emissions in substations, help address the challenges of global warming and climate change, integrate renewable energy systems, promote the green transformation of energy structure, and reduce negative impacts on the environment; high-efficiency equipment and intelligent management systems can reduce energy consumption and maintenance costs, thereby reducing overall operating costs, and can improve the economic benefits and return on investment of substations by saving energy and reducing failures; optimized design and intelligent monitoring can improve the stability and reliability of substations, reduce system failures and downtime, and ensure the continuity and stability of power supply through real-time adjustment and preventive maintenance, thereby reducing the impact on users. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a construction and measurement system for a low-carbon substation according to the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Embodiment 1, Figure 1 The present invention provides a construction and calculation system for a low-carbon substation.

[0017] Acquisition module: collects historical substation equipment performance information, including transformer performance data and circuit breaker operation data; The transformer performance data includes a transformer overload factor and a transformer loss factor, and the circuit breaker operation data includes a circuit breaker operation load factor; The specific method for obtaining the transformer overload coefficient is as follows: First, the rated temperature difference of the transformer within a preset period is obtained; Use an ammeter and an ohmmeter to measure the current and resistance value of each phase of the transformer to form a current value set And the resistance value set , calculate the mean current value And the average resistance value , the heat value is calculated according to Joule's law, and combined with the heat dissipation capacity of the transformer, the actual temperature difference of the transformer within the preset period is obtained; The cooling factor of the transformer is obtained according to the cooling system efficiency of the transformer, and the cooling adjustment coefficient is obtained in combination with the actual temperature difference; Obtain the rated load time within a preset cycle, subtract the preset cycle from the rated load time to obtain the overload time, and combine the load cycle adjustment factor to obtain the load cycle adjustment coefficient; Obtain the actual working ambient temperature and rated temperature of the substation, subtract the actual working ambient temperature from the rated temperature to obtain the temperature difference, and combine it with the environmental adjustment factor to obtain the environmental adjustment coefficient; The rated temperature difference and the actual temperature difference are combined with the set temperature difference coefficient to obtain a preliminary transformer overload factor, and the preliminary transformer overload factor is adjusted according to the cooling adjustment factor, the load cycle adjustment factor and the environment adjustment factor to obtain the transformer overload factor; The specific calculation formula of the transformer overload factor is as follows:

[0018] In the formula, is the transformer overload factor, is the rated temperature difference, is the average current within the preset period, is the winding resistance, t is the preset cycle, S is the heat dissipation coefficient of the transformer, LQ is the cooling factor, k is the load cycle adjustment factor, is the environmental adjustment factor, is the rated load time within the preset cycle, is the actual working ambient temperature, is the rated temperature; It should be noted that the transformer overload factor is used to describe the additional load capacity that the transformer can withstand under normal working conditions. The transformer overload factor plays an important role in the construction and operation of substations, which is mainly reflected in the following aspects: Transformer capacity selection: The overload factor helps determine the rated capacity of the transformer. The maximum load that the transformer may face needs to be considered during design to ensure that it can operate stably under normal operation and overload conditions. By understanding the overload factor, engineers can select a transformer of appropriate capacity to avoid equipment damage or service interruption caused by overload. Thermal management and life prediction: When the transformer is overloaded, it will generate additional heat, which may affect its insulation material and long-term life. The overload factor can help predict the temperature difference of the transformer under different load conditions, so as to evaluate and optimize the design of the cooling system to extend the service life of the transformer; System reliability and safety: Understanding the overload factor helps assess the reliability of the substation during load fluctuations or emergencies, ensuring that the substation can operate normally when the transformer is overloaded, reducing the risk of power supply interruptions and ensuring the overall safety of the system; Economic analysis: The transformer overload factor also affects the economic analysis. Selecting a transformer with a high overload capacity may mean a higher initial investment, but it can reduce the cost of frequent equipment replacement due to future load growth. By measuring and optimizing the overload factor, a balance can be achieved between the initial investment and long-term operating costs. Load dispatch and management: In actual operation, the overload factor helps to formulate a reasonable load dispatch strategy to ensure that appropriate load management measures are taken before the transformer reaches the overload limit, such as adjusting load distribution, introducing backup equipment, etc., to avoid problems caused by overload; Contingency Planning: Understanding the overload factor can also help develop emergency response plans, including arrangements for unexpected load increases, fault repairs, and temporary replacement equipment.

[0019] The specific method for obtaining the transformer loss coefficient is as follows: Transformer loss includes no-load loss and load loss. Load loss is the loss caused by the coil winding resistance of the transformer, which is mainly caused by the Joule heat generated when the current flows in the coil. The specific method for obtaining the load loss is as follows: Use an ammeter and an ohmmeter to measure the current and resistance value of each phase of the transformer to form a current value set And the resistance value set , calculate the mean current value And the average resistance value , the specific formula of load loss is as follows:

[0020] In the formula, is the rated voltage of the transformer, is the load loss; The no-load loss reflects the transformer loss when the power grid is not running. The transformer will generate losses when it is powered on for a long time. It is an important reference indicator reflecting the energy saving of the transformer. The specific method for obtaining the no-load loss is as follows: Disconnect the high-voltage side of the transformer, apply the rated voltage to the low-voltage side, and use the monitoring equipment to obtain the current when the transformer is unloaded. and voltage , the active power measured by the power analyzer is the no-load loss, and the no-load loss formula of the transformer is:

[0021] In the formula, is the no-load loss, f is the predetermined power factor; The specific calculation formula of the transformer loss coefficient is as follows:

[0022] In the formula, is the transformer loss factor, is the load loss influencing factor, is the no-load loss influencing factor; It should be noted that the larger the no-load loss value and the load loss value, the larger the transformer loss coefficient, and the smaller the no-load loss value and the load loss value, the smaller the transformer loss coefficient; the role of the transformer loss coefficient in substation construction is as follows: Design optimization: The loss factor affects the efficiency and operating cost of the transformer. During the design stage, choosing a transformer with a low loss factor can reduce energy waste and optimize the economy of the power system. The loss factor determines the iron loss and copper loss of the transformer, which helps engineers determine the appropriate transformer capacity and configuration during design to meet load demand and efficiency requirements; Reduced energy consumption: By selecting transformers with low loss factors, iron losses (core losses) and copper losses (winding losses) can be significantly reduced, thereby reducing power losses and improving the overall energy efficiency of the substation; Reduce operating costs: In the long run, a lower loss factor means less energy loss and reduced electricity consumption costs, which is crucial to the operating cost management of substations. The loss factor directly affects the amount of power loss, which in turn affects the total operating cost of the substation. Evaluating the loss factor helps to conduct economic analysis and determine the economic feasibility of substation investment; Calculate the life cycle cost of the transformer, including initial investment and long-term operating costs, to help make more cost-effective decisions; Reduced heat loss: Transformers with low loss factors generate less heat during operation, which helps reduce the risk of equipment overheating and extend the service life of the transformer; Reduced maintenance requirements: Reducing losses helps reduce transformer operating load and maintenance requirements, improving system reliability and stability; Reduced carbon footprint: Optimizing transformer loss factors can reduce energy consumption, lower carbon emissions from substations, and have a positive impact on the environment; The specific method for obtaining the circuit breaker operation load factor is as follows: First, the rated temperature of the circuit breaker and the actual working ambient temperature are obtained, and the difference between the actual working ambient temperature and the rated temperature is taken as the temperature change; Record the total number of circuit breaker operations within a preset time period; The total number of operations is divided by the preset time period to obtain the operating frequency of the circuit breaker; The total number of operations and the operating frequency are multiplied to obtain the operating load, and the circuit breaker operating load factor is obtained according to the preset circuit breaker operating load factor calculation formula by combining the temperature change and the rated temperature of the circuit breaker; The specific calculation formula of the circuit breaker operation load factor is as follows:

[0023] In the formula, is the circuit breaker operating load factor, is the total number of operations, is a preset time period, is the actual working ambient temperature, is the rated temperature; It should be noted that the circuit breaker operating load factor (usually called the circuit breaker load factor or the circuit breaker current carrying capacity factor) plays many roles in substation construction. The following are several aspects of its role described in detail: Select the appropriate circuit breaker: The operating load factor of the circuit breaker determines the load range it can withstand. During the substation design phase, engineers need to select the appropriate circuit breaker based on the expected load conditions to ensure that the equipment can operate safely and reliably under the maximum load; Load distribution: By properly configuring circuit breakers, ensure that the load of each circuit breaker does not exceed its load factor rating, optimize the operation of the power system and prevent equipment overload; Short-circuit protection: The circuit breaker load factor helps determine the short-circuit breaking capacity of the circuit breaker. A circuit breaker with an appropriately selected load factor can effectively protect the system from short-circuit faults and ensure the safety of the system in the event of a fault. Overload protection: The load factor of the circuit breaker affects its overload protection capability. When designing, it is necessary to ensure that the circuit breaker can effectively disconnect the circuit in the event of an overload to prevent equipment damage and fire risks; Equipment cost and operating cost: The load factor of the circuit breaker is directly related to the cost and operating cost of the equipment. Selecting the appropriate load factor can optimize the equipment cost and reduce the additional maintenance and replacement costs caused by equipment overload; Save investment: Through reasonable load factor configuration, over-design (too high load factor will increase initial investment) and unnecessary equipment replacement are avoided, thus saving investment; Improve system reliability: Selecting a circuit breaker with an appropriate load factor can ensure the reliability of the equipment under normal load and abnormal conditions, and prevent system failure or shutdown caused by equipment overload; Stable system operation: Appropriate circuit breaker load factor can ensure the stability of the system when the load changes, avoiding power outages or equipment damage caused by the circuit breaker being unable to withstand instantaneous overload; Simplified maintenance: Circuit breakers with reasonable load factors can reduce failures caused by overload or frequent operation, reduce maintenance frequency, and simplify equipment maintenance; Operational safety: ensuring that the load factor of the circuit breaker is within a safe range helps ensure the safety of operators and avoid accidents caused by improper operation or equipment failure; Comply with regulations: Relevant power system standards and regulations must be followed when designing and selecting circuit breakers. Appropriate load factor selection can ensure that the substation design meets industry standards and safety requirements; Certification and inspection: Ensure that the selected circuit breakers meet the corresponding certification requirements, and carry out necessary inspections and tests to ensure the reliability of the equipment under various operating conditions; Evaluation module: Build a substation optimization model based on the machine learning algorithm according to the transformer performance data and circuit breaker operation data, and generate the substation performance evaluation coefficient; The specific calculation formula of the substation performance evaluation coefficient is as follows:

[0024] In the formula, is the substation performance evaluation coefficient, is the transformer overload factor, is the transformer loss factor, is the circuit breaker operating load factor, is the preset transformer overload factor, is the preset transformer loss factor, is the preset circuit breaker operating load factor, and >0, <0, <0; Analysis module: compare and analyze the substation performance evaluation coefficient with the substation performance evaluation threshold, and optimize the substation construction process according to the comparative analysis results; The substation performance evaluation coefficient is compared with the substation performance evaluation threshold. When the substation performance evaluation coefficient is greater than the substation performance evaluation threshold, the substation model does not need to be optimized, and the historical substation performance information is continuously monitored; when the substation performance evaluation coefficient is less than the substation performance evaluation threshold, the substation model is immediately optimized; Comparing and analyzing the substation performance evaluation coefficient with the performance evaluation threshold has the following effects: 1. Determine equipment and system capabilities Performance compliance: Comparative analysis can verify whether the performance indicators of the substation (such as load capacity, efficiency, and stability) meet the predetermined thresholds, ensuring that the system design and equipment selection meet the design requirements and actual operation needs; 2. Optimize the design Identify potential problems: Comparative analysis can identify design deficiencies, such as equipment overload, inefficiency, or insufficient protection, so that corresponding adjustments can be made; Adjust design parameters: Based on the difference between the performance evaluation coefficient and the threshold, optimize the substation design, such as adjusting the transformer capacity, circuit breaker configuration or cooling system to improve the overall performance; 3. Improve economic efficiency Reduce costs: Optimizing design can reduce unnecessary investment, such as selecting equipment with appropriate capacity and configuration, reducing initial investment and operating costs; Improved efficiency: By ensuring that equipment performance is within thresholds, substation operation efficiency can be improved, reducing energy consumption and maintenance costs; 4. Enhance system reliability Improve safety: Comparative analysis helps identify potential failure points in the system, enhance substation reliability and safety, and avoid outages or accidents caused by equipment failures; Stable operation: Ensuring that system performance meets thresholds can improve system stability and prevent power supply interruptions or instability caused by insufficient performance; 5. Compliance with norms and standards Compliance Checking: Comparative analysis helps ensure that substation design and construction are in compliance with industry standards and specifications, thus avoiding compliance issues caused by non-compliance; Quality control: Improve the quality control level during substation construction to ensure that equipment and system performance meet predetermined technical standards; 6. Optimize maintenance and operations Simplified maintenance: Optimized design can reduce equipment failures and maintenance requirements, simplifying daily operations and management of substations; Improve operational efficiency: Ensure that equipment performance is within a reasonable range and improve the convenience and efficiency of substation operation.

[0025] The above formulas are all dimensionless and numerical calculations. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters in the formula are set by technicians in this field according to actual conditions.

[0026] The above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, the above embodiments may be implemented in whole or in part in the form of a computer program product.

[0027] Those of ordinary skill in the art will appreciate that the modules and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0028] In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.

[0029] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0030] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A construction and calculation system for a low-carbon substation, characterized in that: Including acquisition module, evaluation module, analysis module, there are connections between modules: An acquisition module is used to collect historical substation equipment performance information, wherein the equipment performance information includes transformer performance data and circuit breaker operation data; An evaluation module, used to construct a substation optimization construction model based on a machine learning algorithm according to transformer performance data and circuit breaker operation data, and generate a substation performance evaluation coefficient; The analysis module is used to compare and analyze the substation performance evaluation coefficient with the substation performance evaluation threshold, and optimize the substation construction process according to the comparison and analysis results.

2. The low-carbon substation construction and calculation system according to claim 1, characterized in that: The transformer performance data includes a transformer overload factor and a transformer loss factor, and the circuit breaker operation data includes a circuit breaker operation load factor.

3. The low-carbon substation construction and calculation system according to claim 2, characterized in that: The specific method for obtaining the transformer overload coefficient is as follows: Obtain the rated temperature difference of the transformer within a preset period; Obtain the current and resistance value of the transformer, calculate the heat value according to Joule's law, and combine the heat dissipation capacity of the transformer to obtain the actual temperature difference of the transformer within the preset period; The cooling factor of the transformer is obtained according to the cooling system efficiency of the transformer, and the cooling adjustment coefficient is obtained in combination with the actual temperature difference; Obtain the rated load time within a preset cycle, subtract the preset cycle from the rated load time to obtain the overload time, and combine the load cycle adjustment factor to obtain the load cycle adjustment coefficient; Obtain the actual working ambient temperature and rated temperature of the substation, subtract the actual working ambient temperature from the rated temperature to obtain the temperature difference, and combine it with the environmental adjustment factor to obtain the environmental adjustment coefficient; The rated temperature difference and the actual temperature difference are combined with the set temperature difference coefficient to obtain a preliminary transformer overload factor. The preliminary transformer overload factor is adjusted according to the cooling adjustment factor, the load cycle adjustment factor and the environmental adjustment factor to obtain the transformer overload factor.

4. The low-carbon substation construction and calculation system according to claim 2, characterized in that: The specific method for obtaining the transformer loss coefficient is as follows: Obtain the rated current and resistance value of the transformer, combine with the rated voltage value of the transformer, and calculate the transformer load loss according to the preset load loss formula; The current and voltage of the transformer when it is no-load are obtained, and combined with the power factor, the no-load loss of the transformer is calculated according to the preset no-load loss formula; the load loss and no-load loss are combined to obtain the transformer loss coefficient.

5. The low-carbon substation construction and calculation system according to claim 2, characterized in that: The specific method for obtaining the circuit breaker operation load factor is as follows: The rated temperature of the circuit breaker and the actual working ambient temperature are obtained, and the difference between the actual working ambient temperature and the rated temperature is taken as the temperature change; Record the total number of circuit breaker operations within a preset time period; The total number of operations is divided by the preset time period to obtain the operating frequency of the circuit breaker; The total number of operations and the operating frequency are multiplied to obtain the operating load. The operating load factor of the circuit breaker is obtained according to the preset circuit breaker operating load factor calculation formula by combining the temperature change and the rated temperature of the circuit breaker.

6. The low-carbon substation construction and calculation system according to claim 1, characterized in that: The specific steps of optimizing the substation construction process are as follows: comparing the substation performance evaluation coefficient with a substation performance evaluation threshold; When the substation performance evaluation coefficient is greater than the substation performance evaluation threshold, there is no need to optimize the substation model and continuously monitor the historical substation performance information; When the substation performance evaluation coefficient is less than the substation performance evaluation threshold, the substation model is optimized immediately.

7. The low-carbon substation construction and calculation system according to claim 1, characterized in that: The specific calculation formula of the substation performance evaluation coefficient is as follows: In the formula, is the substation performance evaluation coefficient, is the transformer overload factor, is the transformer loss factor, is the circuit breaker operating load factor, is the preset transformer overload factor, is the preset transformer loss factor, is the preset circuit breaker operating load factor, and >0, <0, <0.

8. The low-carbon substation construction and calculation system according to claim 2, characterized in that: The specific calculation formula of the transformer overload factor is as follows: In the formula, is the transformer overload factor, is the rated temperature difference, is the average current within the preset period, is the winding resistance, t is the preset cycle, S is the heat dissipation coefficient of the transformer, LQ is the cooling factor, k is the load cycle adjustment factor, is the environmental adjustment factor, is the rated load time within the preset cycle, is the actual working environment temperature, is the rated temperature.

9. The low-carbon substation construction and calculation system according to claim 2, characterized in that: The specific calculation formula of the transformer loss coefficient is as follows: In the formula, is the transformer loss factor, is the load loss influencing factor, is the no-load loss influencing factor, is the load loss, It is the no-load loss.

10. The low-carbon substation construction and calculation system according to claim 2, characterized in that: The specific calculation formula of the circuit breaker operation load factor is as follows: In the formula, is the circuit breaker operating load factor, is the total number of operations, is a preset time period, is the actual working environment temperature, is the rated temperature.

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