A carbon emission monitoring and early warning method during substation construction

Abstract

The present invention discloses a carbon emission monitoring and early warning method during the construction of a substation, which relates to the technical field of carbon emission monitoring; during the construction of a substation, operating mechanical equipment wears out as the workload increases or ages over time, which causes the energy consumption per unit workload of the mechanical equipment to gradually increase, thereby increasing the carbon emissions per unit workload. By obtaining the energy consumption evaluation value of the mechanical equipment and fitting the energy consumption trend function, the functional attenuation of the mechanical equipment is quantified; the subsequent fuel consumption is predicted according to the energy consumption trend function, thereby obtaining the overall possible carbon emissions under the current conditions, so that future carbon emissions exceeding the standard can be warned. This method takes into account the functional attenuation of the mechanical equipment, thereby improving the accuracy of the prediction.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon emission monitoring, and in particular to a carbon emission monitoring and early warning method during substation construction. Background Art

[0002] With the increasing awareness of global climate change and environmental protection, the power industry, as one of the main sources of carbon emissions, has become particularly prominent in terms of carbon emission management. Substations are an indispensable infrastructure of the power system. The carbon emissions during their construction are not only directly related to the sustainable development of enterprises, but also have a profound impact on the environmental quality of the entire society.

[0003] Patent CN117151951A discloses a carbon emission accounting system for substation construction projects. By calculating the fixed carbon emissions generated by materials, construction aids and construction personnel, managers can fully understand the carbon emissions generated by substation construction projects to achieve accurate decisions on carbon management.

[0004] At present, the carbon emission factor method is used to calculate the carbon emissions that have been generated during the construction process, so as to achieve early warning of carbon emissions exceeding the standard or failure. However, this early warning method has a lag, and can only issue an early warning after the emission exceeds the standard, lacking the foresight of carbon emissions in the overall process. Summary of the invention

[0005] The purpose of the present invention is to solve the problem of lack of predictability of the early warning mentioned in the above background technology, and to propose a carbon emission monitoring and early warning method during the construction of a substation.

[0006] A first aspect of the present invention provides a carbon emission monitoring and early warning method during substation construction, the method comprising:

[0007] Divide the substation construction process into multiple sub-processes;

[0008] Obtain carbon emission reference data according to historical construction data; the carbon emission reference data includes a first carbon emission reference value of a target subprocess; the target subprocess is any one of a plurality of subprocesses;

[0009] Obtaining an energy consumption evaluation value of a target mechanical device within a target measurement cycle; the target subprocess includes multiple measurement cycles; the target measurement cycle is any one of the multiple measurement cycles; the target mechanical device is any one of the multiple operating mechanical devices used to complete the target subprocess;

[0010] Fitting an energy consumption trend function of the target mechanical equipment according to a plurality of energy consumption evaluation values ​​based on time series;

[0011] Predicting a first carbon emission of a target subprocess according to the energy consumption trend function;

[0012] Generate and send warning information based on the first carbon emission amount and the first carbon emission reference value.

[0013] Optionally, obtaining a carbon emission reference value based on historical construction data includes:

[0014] According to the design data of the target substation, the historical construction data of the substation of the same type is obtained as reference data;

[0015] Extracting a second carbon emission reference value for each sub-process according to the reference data;

[0016] Obtaining a reference correction coefficient according to the land conditions and environmental climate conditions of the target substation construction site;

[0017] The second carbon emission value is corrected according to the reference correction coefficient to obtain a first carbon emission reference value.

[0018] Optionally, obtaining the energy consumption evaluation value of the target mechanical equipment within the target measurement period includes:

[0019] Obtaining a first workload and a first fuel consumption of a target mechanical equipment within a target measurement period;

[0020] An energy consumption evaluation value is calculated according to the first workload and the first fuel consumption:

[0021]

[0022] Among them, EC is the energy consumption evaluation value to be sought; FC is the first fuel consumption; and UW is the first workload.

[0023] Optionally, fitting the energy consumption trend function of the target mechanical equipment according to multiple energy consumption evaluation values ​​based on time series includes:

[0024] The least square method is used to fit and optimize multiple energy consumption evaluation values ​​based on time series to obtain the energy consumption trend function of the target mechanical equipment:

[0025] EC t =a*log b (c*t+d)

[0026] Among them, EC t is the energy consumption evaluation value of the target mechanical equipment in the measurement period t; t is the measurement period serial number; a, b, c, d are constants.

[0027] Optionally, predicting the first carbon emissions of the target sub-process according to the energy consumption trend function includes:

[0028] Calculate the energy consumption forecast value of each subsequent sub-process in the current measurement cycle according to the energy consumption trend function;

[0029] Calculate the second carbon emission of the target mechanical equipment in the target sub-process according to the predicted energy consumption value:

[0030]

[0031] Among them, SCE is the second carbon emission required; CE i is the carbon emissions generated by the target machine up to the current measurement period; EC j is the energy consumption prediction value of the jth measurement cycle; UW j is the first workload forecast value of the jth measurement cycle, determined according to the construction plan; ef is the carbon emission factor of the fuel used by the target mechanical equipment; n is the number of measurement cycles in the target subprocess; i and j are the serial numbers of the measurement cycles;

[0032] According to the second carbon emissions of the plurality of mechanical equipments, the first carbon emissions of the target sub-process are calculated:

[0033]

[0034] Among them, FCE is the first carbon emission required; SCE k is the second carbon emission of the kth mechanical equipment; p is the number of operating mechanical equipment in the target sub-process.

[0035] Optionally, the generating and sending warning information according to the first carbon emission amount and the carbon emission reference value includes:

[0036] If the first carbon emission amount is greater than the first carbon emission reference value corresponding to the target sub-process, calculating the deviation between the first carbon emission amount and the first carbon emission reference value;

[0037] If the deviation is greater than or equal to the first preset threshold, a carbon emission serious exceeding standard information is generated as a warning information;

[0038] If the deviation is less than the first preset threshold and less than the second preset threshold, carbon emission exceeding standard information is generated as warning information;

[0039] If the deviation is less than the second preset threshold, a carbon emission slight excess information is generated as warning information;

[0040] The warning information is sent to the handheld terminal of the manager.

[0041] Optionally, the method further includes:

[0042] Obtaining a second fuel consumption of the target mechanical equipment within a preset time period;

[0043] According to the first carbon emission intensity, the minimum carbon emission amount of the target mechanical equipment to complete the target sub-process is calculated:

[0044]

[0045] Among them, CE min is the minimum carbon emission required; ef is the carbon emission factor of the fuel used by the target mechanical equipment; n is the number of measurement cycles in the target sub-process; R is the number of measurement cycles included in the preset time period; SFC is the second fuel consumption;

[0046] If the minimum carbon emission is greater than the third preset threshold, mechanical equipment unqualified information is generated as early warning information.

[0047] Beneficial effects of the present invention:

[0048] The present invention proposes a carbon emission monitoring and early warning method during substation construction, the method comprising: dividing the substation construction process into multiple sub-processes; obtaining carbon emission reference data based on historical construction data; the carbon emission reference data includes a first carbon emission reference value of a target sub-process; the target sub-process is any one of the multiple sub-processes; obtaining an energy consumption evaluation value of a target mechanical equipment within a target measurement period; the target sub-process includes multiple measurement periods; the target measurement period is any one of the multiple measurement periods; the target mechanical equipment is any one of multiple operating mechanical equipment used to complete the target sub-process; fitting an energy consumption trend function of the target mechanical equipment based on multiple time series-based energy consumption evaluation values; predicting a first carbon emission amount of the target sub-process based on the energy consumption trend function; generating and sending an early warning message based on the first carbon emission amount and the first carbon emission reference value.

[0049] By obtaining the energy consumption evaluation value of mechanical equipment, fitting the energy consumption trend function, and predicting the subsequent fuel consumption based on the energy consumption trend function, the overall possible future carbon emissions under current conditions can be obtained, so that an early warning of possible future carbon emissions exceeding the standard can be issued. This method takes into account the increase in energy consumption caused by the functional degradation of mechanical equipment, thereby improving the accuracy of the prediction. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The present invention will be further described below in conjunction with the accompanying drawings.

[0051] Figure 1 A flow chart of a carbon emission monitoring and early warning method during substation construction is provided for an embodiment of the present invention. DETAILED DESCRIPTION

[0052] 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.

[0053] The embodiment of the present invention provides a carbon emission monitoring and early warning method during substation construction. Figure 1 , Figure 1 A flowchart of a carbon emission monitoring and early warning method during substation construction is provided for an embodiment of the present invention. The method comprises the following steps:

[0054] S101, dividing the substation construction process into multiple sub-processes.

[0055] S102, obtaining carbon emission reference data based on historical construction data.

[0056] S103, obtaining an energy consumption evaluation value of a target mechanical device within a target measurement period.

[0057] S104: fitting an energy consumption trend function of the target mechanical equipment according to a plurality of energy consumption evaluation values ​​based on time series.

[0058] S105: predicting the first carbon emission of the target sub-process according to the energy consumption trend function.

[0059] S106: Generate and send warning information according to the first carbon emission amount and the first carbon emission reference value.

[0060] Among them, the carbon emission reference data includes the first carbon emission reference value of the target sub-process; the target sub-process is any one of multiple sub-processes; the target sub-process includes multiple measurement cycles; the target measurement cycle is any one of multiple measurement cycles; the target mechanical equipment is any one of multiple operating mechanical equipment used to complete the target sub-process.

[0061] Based on the carbon emission monitoring and early warning method during the construction of a substation provided by the embodiment of the present invention, the energy consumption evaluation value of mechanical equipment is obtained, and the energy consumption trend function is fitted; the subsequent fuel consumption is predicted according to the energy consumption trend function, so as to obtain the overall possible future carbon emissions under the current conditions, so as to warn of possible future carbon emission exceeding the standard. The method takes into account the increase in energy consumption caused by the functional degradation of mechanical equipment, thereby improving the accuracy of the prediction.

[0062] In one implementation, the carbon emissions directly generated by the construction site are measured by this method, while other carbon footprints of the construction process can be quantitatively calculated using existing technologies. For example, the carbon emissions of materials and electricity are calculated using the carbon emission factor method. However, the improvement of carbon emissions of materials and electricity lies in the manufacturer. During the construction process, with the goal of over-standard early warning, it can ensure that the carbon emissions of the construction site are always controlled within the predetermined safety range, avoiding the environmental and economic risks caused by over-standard.

[0063] In one implementation, the substation construction process is divided into multiple sub-processes based on the chronological order, such as foundation treatment, main structure construction, external protective structure construction, building decoration, outdoor engineering, equipment installation, etc. By monitoring and early warning the carbon emissions of each sub-process, the carbon emission management of the entire construction process is guaranteed.

[0064] In one embodiment, step S102 includes:

[0065] Step 1: Based on the design data of the target substation, historical construction data of substations of the same type are obtained as reference data.

[0066] Step 2: extracting the second carbon emission reference value of each sub-process based on the reference data;

[0067] Step three, obtain the reference correction coefficient according to the land conditions and environmental climate conditions of the target substation construction site.

[0068] Step 4: Correct the second carbon emission value according to the reference correction coefficient to obtain the first carbon emission reference value.

[0069] In one implementation, the design data includes parameters such as substation type and building area. Based on these parameters, historical construction data of substations of the same type are searched, from which historical carbon emission monitoring data can be obtained. If the historical carbon emission data is within the expected carbon emission threshold, the historical carbon emission data can be used as reference data. Using existing cases as reference ensures the feasibility of setting carbon emission thresholds.

[0070] In one implementation, different construction locations will lead to different environmental impacts on mechanical work. For example, the oxygen content in high-altitude areas is lower, so the combustion efficiency of mechanical equipment may be lower, resulting in more fuel required for the same workload compared to areas with lower altitudes, resulting in higher carbon emissions; areas with low temperatures require more preheating time, resulting in more carbon emissions; and so on. Regional environment affects carbon emissions. Therefore, based on land conditions and climate conditions, substations that are closer to the target substation in terms of land and climate can be selected.

[0071] If there is a substation with a small difference as a reference, the carbon emission data can be directly obtained; at this time, the reference correction coefficient is 1; if it is difficult to search for a substation with a small difference, the reference correction coefficient is calculated based on the difference between the selected substation area and the target area to obtain a more accurate reference value. At this time, the reference correction coefficient is between (0.8, 1.2); if the reference correction coefficient exceeds this range, the historical construction data is abandoned as a reference, and the carbon emission control amount given by the professional team is used as a reference. Using historical construction data as a reference is convenient, fast, and ensures the feasibility of implementation. It is also a feasible method to quantify and control carbon emissions during the construction process through calculations by a professional team.

[0072] In one embodiment, step S103 includes:

[0073] Step 1: Obtain a first workload and a first fuel consumption of a target mechanical equipment within a target measurement period.

[0074] Step 2: Calculate the energy consumption evaluation value according to the first workload and the first fuel consumption:

[0075]

[0076] Among them, EC is the energy consumption evaluation value required; FC is the first fuel consumption; UW is the first workload.

[0077] In one implementation, different mechanical equipment has different quantitative indicators for the first workload. For example, an excavator uses earthwork volume; a generator uses power generation; a road roller uses mileage; and so on. The work of the mechanical equipment is quantified, and the relationship with fuel consumption is obtained to perform energy consumption evaluation and obtain the fuel consumption per unit workload. This provides a data basis for subsequent energy consumption trend fitting.

[0078] In one embodiment, step S104 includes:

[0079] The least squares method is used to fit and optimize multiple energy consumption evaluation values ​​based on time series to obtain the energy consumption trend function of the target mechanical equipment:

[0080] EC t =a*log b (c*t+d)

[0081] Among them, EC t is the energy consumption evaluation value of the target mechanical equipment in the measurement period t; t is the measurement period serial number; a, b, c, d are constants.

[0082] In one implementation, the least square method can be used to minimize the sum of square errors between the fitted energy consumption trend function and the actual energy consumption evaluation value, thereby improving the accuracy of prediction and evaluation.

[0083] In one implementation, during the construction of a substation, the mechanical equipment will wear out as the workload increases or age over time, which will cause the energy consumption per unit of work of the mechanical equipment to gradually increase, thereby increasing the carbon emissions per unit of work. By using the energy consumption trend function, it is possible to predict future energy consumption, thereby predicting future carbon emissions, and achieving early warning of possible carbon emissions exceeding the standard.

[0084] In one embodiment, step S105 includes:

[0085] Step 1: Calculate the energy consumption forecast value of each subsequent sub-process in the current measurement cycle according to the energy consumption trend function.

[0086] Step 2: Calculate the second carbon emission of the target mechanical equipment in the target sub-process based on the predicted energy consumption value:

[0087]

[0088] Among them, SCE is the second carbon emission required; CE i is the carbon emissions generated by the target machine up to the current measurement period; EC j is the energy consumption prediction value of the jth measurement cycle; UW j is the first workload forecast value of the jth measurement cycle, determined according to the construction plan; ef is the carbon emission factor of the fuel used by the target mechanical equipment; n is the number of measurement cycles in the target subprocess; i and j are the serial numbers of the measurement cycles.

[0089] Step 3: Calculate the first carbon emissions of the target sub-process based on the second carbon emissions of multiple mechanical equipment:

[0090]

[0091] Among them, FCE is the first carbon emission required; SCE k is the second carbon emission of the kth mechanical equipment; p is the number of operating mechanical equipment in the target sub-process.

[0092] In one implementation, based on the predicted energy consumption values ​​of each mechanical equipment, the future carbon emissions of the entire sub-process can be obtained by summing them up, thereby achieving early warning of possible carbon emissions exceeding the standard.

[0093] In one embodiment, step S106 includes:

[0094] Step 1: If the first carbon emission is greater than the first carbon emission reference value corresponding to the target sub-process, then the deviation between the first carbon emission and the first carbon emission reference value is calculated.

[0095] Step 2: If the deviation is greater than or equal to the first preset threshold, a carbon emission serious excess information is generated as a warning information.

[0096] Step three: if the deviation is less than the first preset threshold and less than the second preset threshold, carbon emission exceeding standard information is generated as warning information.

[0097] Step 4: If the deviation is less than the second preset threshold, a carbon emission slight excess information is generated as a warning information.

[0098] Step 5: Send the warning information to the manager's handheld terminal.

[0099] In one implementation, the first preset threshold can be set to 30% of the first carbon emission reference value, and the second preset threshold can be set to 10% of the first carbon emission reference value. According to the deviation between the carbon emission amount and the reference value, the degree of exceeding the standard can be accurately determined, and corresponding warning information can be generated so that the management personnel can take timely measures.

[0100] In one implementation, the difference between the latest energy consumption assessment value of each mechanical device and the initial energy consumption assessment value can be calculated as the energy consumption offset; the identification information and energy consumption information of several mechanical devices with the largest energy consumption offset are added to the early warning information; so that management personnel can perceive the problem more clearly and solve the problem more quickly. For example, repair or replace mechanical equipment that cannot meet carbon emission requirements.

[0101] A carbon emission monitoring and early warning method during substation construction provided by an embodiment of the present invention also includes:

[0102] Step 1: Obtain a second fuel consumption of the target mechanical equipment within a preset time period.

[0103] Step 2: Calculate the minimum carbon emission of the target mechanical equipment to complete the target sub-process based on the first carbon emission intensity:

[0104]

[0105] Among them, CE min is the minimum carbon emission required; ef is the carbon emission factor of the fuel used by the target mechanical equipment; n is the number of measurement cycles in the target sub-process; R is the number of measurement cycles contained in the preset time period; SFC is the second fuel consumption.

[0106] Step three: if the minimum carbon emission is greater than the third preset threshold, mechanical equipment unqualified information is generated as early warning information.

[0107] In one implementation, in the early stage of measurement, before sufficient fitting data is obtained, the average method is used to use the average consumption of the target mechanical equipment to calculate the carbon emissions of the entire process, so as to determine whether the target machinery is qualified or not. For example, in the construction plan, the working days of the excavator are 60 days. The minimum carbon emissions for 60 days can be calculated based on the fuel consumption of excavator A on the first day, so as to determine whether the carbon emissions of excavator A are qualified. In this way, unqualified mechanical equipment can be screened out in the early stage, reducing the subsequent carbon management risks.

[0108] In one implementation, the third preset threshold may be set to 90% of the first carbon emission reference value.

[0109] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A carbon emission monitoring and early warning method during substation construction, characterized in that: The method comprises: Divide the substation construction process into multiple sub-processes; Obtain carbon emission reference data according to historical construction data; the carbon emission reference data includes a first carbon emission reference value of a target subprocess; the target subprocess is any one of a plurality of subprocesses; Obtaining an energy consumption evaluation value of a target mechanical device within a target measurement cycle; the target subprocess includes multiple measurement cycles; the target measurement cycle is any one of the multiple measurement cycles; the target mechanical device is any one of the multiple operating mechanical devices used to complete the target subprocess; According to multiple energy consumption evaluation values ​​based on time series, an energy consumption trend function of the target mechanical equipment is fitted; specifically, the energy consumption trend function of the target mechanical equipment is obtained by fitting and optimizing multiple energy consumption evaluation values ​​based on time series using the least squares method: Among them, EC t is the energy consumption evaluation value of the target mechanical equipment in the measurement period t; t is the measurement period serial number; a, b, c, d are constants; Predicting a first carbon emission of a target subprocess according to the energy consumption trend function; Generate and send warning information based on the first carbon emission amount and the first carbon emission reference value.

2. A carbon emission monitoring and early warning method during substation construction according to claim 1, characterized in that: The carbon emission reference values ​​obtained based on historical construction data include: According to the design data of the target substation, the historical construction data of the substation of the same type is obtained as reference data; Extracting a second carbon emission reference value for each sub-process according to the reference data; Obtaining a reference correction coefficient according to the land conditions and environmental climate conditions of the target substation construction site; The second carbon emission reference value is corrected according to the reference correction coefficient to obtain the first carbon emission reference value.

3. The carbon emission monitoring and early warning method during substation construction according to claim 1 is characterized in that: The step of obtaining the energy consumption evaluation value of the target mechanical equipment within the target measurement period includes: Obtaining a first workload and a first fuel consumption of a target mechanical equipment within a target measurement period; An energy consumption evaluation value is calculated according to the first workload and the first fuel consumption: Among them, EC is the energy consumption evaluation value to be sought; FC is the first fuel consumption; and UW is the first workload.

4. A carbon emission monitoring and early warning method during substation construction according to claim 3, characterized in that: The predicting the first carbon emission of the target sub-process according to the energy consumption trend function comprises: Calculate the energy consumption forecast value of each subsequent sub-process in the current measurement cycle according to the energy consumption trend function; Calculate the second carbon emission of the target mechanical equipment in the target sub-process according to the predicted energy consumption value: Among them, SCE is the second carbon emission required; CE i is the carbon emissions generated by the target mechanical equipment up to the current measurement period; EC j is the energy consumption prediction value of the jth measurement cycle; UW j is the first workload forecast value of the jth measurement cycle, determined according to the construction plan; ef is the carbon emission factor of the fuel used by the target mechanical equipment; n is the number of measurement cycles in the target subprocess; i and j are the serial numbers of the measurement cycles; According to the second carbon emissions of the plurality of mechanical equipments, the first carbon emissions of the target sub-process are calculated: Among them, FCE is the first carbon emission required; SCE k is the second carbon emission of the kth mechanical equipment; p is the number of operating mechanical equipment in the target sub-process.

5. The carbon emission monitoring and early warning method during substation construction according to claim 1 is characterized in that: The generating and sending warning information according to the first carbon emission amount and the carbon emission reference value includes: If the first carbon emission amount is greater than the first carbon emission reference value corresponding to the target sub-process, calculating the deviation between the first carbon emission amount and the first carbon emission reference value; If the deviation is greater than or equal to the first preset threshold, a carbon emission serious exceeding standard information is generated as a warning information; If the deviation is less than the first preset threshold and not less than the second preset threshold, carbon emission exceeding standard information is generated as warning information; If the deviation is less than the second preset threshold, a carbon emission slight excess information is generated as warning information; The warning information is sent to the handheld terminal of the manager.

6. The carbon emission monitoring and early warning method during substation construction according to claim 1 is characterized in that: The method further comprises: Obtaining a second fuel consumption of the target mechanical equipment within a preset time period; Calculate the minimum carbon emissions of the target mechanical equipment to complete the target sub-process: Among them, CE min is the minimum carbon emission required; ef is the carbon emission factor of the fuel used by the target mechanical equipment; n is the number of measurement cycles in the target sub-process; R is the number of measurement cycles included in the preset time period; SFC is the second fuel consumption; If the minimum carbon emission is greater than the third preset threshold, mechanical equipment unqualified information is generated as early warning information.

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