Carbon emission metering device and method based on dynamic carbon emission factors

Abstract

The invention relates to the technical field of carbon emission metering, in particular to a carbon emission metering device and method based on a dynamic carbon emission factor, and the method comprises the steps that a central processing unit module carries out data storage through a data storage module, and the stored data comprises the carbon emission factor issued by a main station; the electrical parameter measurement module is used for detecting electrical parameters of the power utilization system in real time, and the electrical parameters comprise voltage, current and a phase difference between the voltage and the current; the central processor module calculates and obtains the carbon emission according to the voltage, the current and the phase difference between the voltage and the current detected by the voltage measurement module in real time and the carbon emission factor issued by the master station. Compared with a traditional static carbon emission estimation method, the dynamic calculation method is more accurate, and the device can provide accurate data support for making national or regional environmental protection policies.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon emission measurement, and in particular to a carbon emission measurement device and a measurement method based on a dynamic carbon emission factor. Background Art

[0003] At present, all industries and fields involve carbon dioxide emissions. Considering the production process of products, the full life cycle of equipment is established, and the emission of carbon dioxide in the full life cycle of equipment is analyzed. The power generation side proposes to use equivalent standard coal, equivalent standard natural gas and other methods to roughly calculate the carbon dioxide emissions on the power generation side. However, on the transmission side, substation side, distribution side, and power consumption side, with the large-scale access of new energy, the thermal power output and new energy output of each node are very different, and the power grid company conducts real-time dispatch of power flow, resulting in deviations in the carbon emission factors of each node. If the region adopts a unified carbon emission factor, it will cause inaccurate carbon dioxide measurement.

[0004] Existing carbon dioxide metering devices use a single and relatively fixed carbon emission factor. The carbon emission factor is relatively lagging and cannot be updated in a timely manner, resulting in the obtained carbon dioxide emissions being difficult to reflect the time and geographical differences in the source of electricity production. Summary of the invention

[0005] (I) Purpose of the invention

[0006] The object of the present invention is to provide a carbon emission metering device and a metering method based on a dynamic carbon emission factor which can improve metering accuracy and metering efficiency.

[0007] (II) Technical solution

[0008] In order to solve the above problems, the present invention provides a carbon emission metering device based on a dynamic carbon emission factor, wherein the metering device is arranged in an electric meter, the electric meter is connected to an electric power system, and the metering device comprises:

[0009] Central processing unit module, data storage module, communication module and electrical parameter measurement module;

[0010] The central processing unit module is connected to the data storage module, the communication module, and the electrical parameter measurement module respectively;

[0011] The central processing unit module exchanges information with the main station through the communication module;

[0012] The central processing unit module stores data through the data storage module, wherein the stored data includes the carbon emission factor sent by the master station;

[0013] The electrical parameter measurement module is used to detect the electrical parameters of the power system in real time, and the electrical parameters include voltage, current and the phase difference between voltage and current;

[0014] The central processing unit module calculates and obtains the carbon emission amount according to the voltage, current, phase difference between the voltage and current detected in real time by the voltage measurement module and the carbon emission factor sent by the master station.

[0015] In another aspect of the present invention, preferably, the metering device further comprises: a human-computer interaction module, a time calibration module and a watchdog module;

[0016] The human-computer interaction module is connected to the central processing unit module, the timing module and the watchdog module respectively;

[0017] The human-computer interaction module is used to visualize the carbon emissions calculated by the central processing unit module and the carbon emission factors in the data storage module;

[0018] The metering device performs time calibration with the master station through the time calibration module;

[0019] The metering device monitors the operating status of the central processing unit module through the watchdog module.

[0020] In another aspect of the present invention, preferably, the metering device further comprises: a safety module, the safety module collects working environment parameters of the metering device, and the central processing unit module performs safety monitoring and real-time protection on the metering device according to the working environment parameters.

[0021] In another aspect of the present invention, preferably, the metering device further comprises: a power management module, and the power management module is a backup power supply for the metering device.

[0022] In another aspect of the present invention, preferably, the metering device further comprises: an interface module, the interface module is connected to the central processing unit module, the interface module comprises an RS485 interface, a DL / T698.45 protocol interface, an analog quantity interface, a digital quantity interface and a standby interface;

[0023] The standby interface is used for subsequent component access;

[0024] The RS485 interface and the DL / T698.45 protocol interface communicate with the main station through the communication module;

[0025] The security module is connected to the central processing unit module via the analog quantity interface and the digital quantity interface for data transmission.

[0026] In another aspect of the present invention, preferably, the metering device further comprises: a first isolation module and a second isolation module;

[0027] The first isolation module is connected to the central processing unit module, and the first isolation module is used to isolate the electric field and magnetic field inside the metering device;

[0028] The second isolation module is connected to the interface module, and the second isolation module is used to avoid coupling between electrical signals of different frequencies in the interface module.

[0029] In another aspect of the present invention, preferably, a carbon emission measurement method based on a dynamic carbon emission factor is provided, the measurement method being applicable to the measurement device as described above, and the measurement method comprising:

[0030] The central processing module obtains the first carbon emission factor from the main station in real time through the communication module and stores it in the data storage unit;

[0031] The electrical parameter measurement module obtains the voltage, current and phase angle between the voltage and current of the power system;

[0032] Verifying the operating state of the power system by using the voltage, current and phase angle between the voltage and current of the power system;

[0033] If the operating state of the power system is normal, the real-time power of the power system is calculated using the voltage, current and the phase angle between the voltage and the current;

[0034] Calculate and obtain the carbon emissions of the power system using the real-time power and the first carbon emission factor;

[0035] If the operating status of the power system is abnormal, an early warning will be issued.

[0036] In another aspect of the present invention, preferably, the measurement method further comprises verifying the first carbon emission factor;

[0037] The verification includes:

[0038] According to the historical record values ​​of the carbon emission factor, a carbon emission factor time series is formed in chronological order, and the carbon emission factor time series is a carbon emission factor time series sample;

[0039] Using the d-order difference method and the carbon emission factor time series, a stationary series is obtained;

[0040] The current carbon emission factor is predicted using the stationary sequence to obtain a second carbon emission factor, including:

[0041] For the stationary sequence that meets the periodicity, the current carbon emission factor is predicted by using a periodic regression fitting method;

[0042] For the stationary sequence that does not satisfy periodicity, the current carbon emission factor is predicted using Fourier distribution;

[0043] Calculate the mean, variance, and standard deviation σ of the carbon emission factor time series samples, and use the 3 times standard deviation method to obtain the carbon emission factor threshold;

[0044] Comparing the second carbon emission factor with the first carbon emission factor to obtain a comparison result;

[0045] If the comparison result is within the carbon emission factor threshold, the carbon emission of the electricity system is calculated using the first carbon emission factor;

[0046] If the comparison result is not within the carbon emission factor threshold, a feedback signal is sent to the main station to confirm whether the first carbon emission factor at the current moment is accurate.

[0047] In another aspect of the present invention, preferably,

[0048] The real-time power of the power system is calculated using the following formula:

[0049] P=UIcosθ

[0050] Wherein, p represents the real-time power of the power system, U represents the real-time voltage of the power system, I represents the real-time current of the power system; θ represents the phase difference between voltage and current;

[0051] The carbon emissions of the electricity system are calculated using the following formula:

[0052] EC=∫Pmdt

[0053] Wherein, is the carbon emission from EC to the target system; P is the real-time power of the target system; and m is the first carbon emission factor.

[0054] In another aspect of the present invention, preferably, the metering method further comprises:

[0055] Obtain the working environment parameters of the power system, including temperature T, humidity F, wind speed v, pressure P, and power grid environment L;

[0056] The working environment parameters of the power system are compared with the nameplate parameters of the equipment, namely, temperature T0, humidity F0, wind speed v0, pressure P0, and power grid environment L0;

[0057] The thresholds of the nameplate parameters temperature T0, humidity F0, wind speed v0, pressure P0, and power grid environment L0 given by the preset equipment are ΔT0, ΔF0, Δv0, ΔP0, and ΔL0 respectively;

[0058] Compare the working environment parameter threshold with the working parameters set on the nameplate and the actual working parameters of the equipment to obtain a comparison result;

[0059]

[0060] If the above formula is established, it means that the actual working environment parameters of the device meet the conditions, and the working state is normal and continues to run. Otherwise, it means that the actual working environment parameters of the device do not meet the conditions, and the working state is abnormal. Then the device will be shut down and the corresponding event will be urgently reported to the master station.

[0061] In case of sudden power outage, the emergency event will be recorded and the data will be stored;

[0062] The comparison result and the record of the emergency event are uploaded to the main station.

[0063] (III) Beneficial effects

[0064] The above technical solution of the present invention has the following beneficial technical effects:

[0065] The present invention detects the voltage, current and phase difference between the voltage and current of the power system in real time through the electrical parameter measurement module. The central processing unit module can accurately calculate the real-time power of the power system. Combined with the carbon emission factor issued by the master station, the central processing unit module can accurately calculate the carbon emissions generated by the power system. This dynamic calculation method is more accurate than the traditional static carbon emission estimation method. The device can provide accurate data support for the formulation of national or regional environmental protection policies. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0067] Figure 2 It is a schematic diagram of the overall flow chart of an embodiment of the present invention. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0069] The accompanying drawings show schematic diagrams of structures according to embodiments of the present invention. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clarity. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0070] Obviously, the described embodiments are only some embodiments of the present invention, but not all 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.

[0071] In the description of the present invention, it should be noted that the terms “first” and “second” are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0072] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0073] The present invention will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, the same elements are represented by similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not drawn to scale.

[0074] Embodiment 1

[0075] A carbon emission metering device based on a dynamic carbon emission factor, wherein the metering device is arranged in an electric meter, the electric meter is connected to an electric power system, and the metering device acts as a client to communicate with a main station. Figure 1 FIG. 1 shows a schematic diagram of the overall structure of an embodiment of the present invention. Figure 1 As shown, the metering device includes:

[0076] Central processing unit module, data storage module, communication module and electrical parameter measurement module;

[0077] The central processing unit module is connected to the data storage module, the communication module, and the electrical parameter measurement module respectively; the central processing unit module is the core of the entire metering device, and is used to receive the carbon emission factor issued by the master station in real time, verify it with the historical carbon emission factor, and calculate the carbon emission at the current moment; exchange information with the data storage module on the carbon emission factor, carbon emission, voltage, current and other electrical quantities and non-electrical quantities; execute various instructions issued by the master station and report emergencies, and realize information exchange with the master station, etc.;

[0078] The central processing unit module exchanges information with the main station through the communication module; the communication module is used to realize the information interaction between the metering device and the main station, is suitable for multiple scenarios and multiple states, and has strong adaptability.

[0079] The central processing unit module stores data through the data storage module, wherein the stored data includes the carbon emission factor issued by the master station; the master station dynamically adjusts and issues the carbon emission factor based on the latest energy policy, fuel type of the power plant, efficiency changes, and power grid transmission losses, etc.; the metering device can reflect the latest carbon emission situation in real time, improving the accuracy and timeliness of the calculation; the carbon emission factors of different time periods, different regions, and even different users may be different. Through the dynamic carbon emission factor, the metering device can realize differentiated carbon emission calculations for different electricity usage scenarios, which is more in line with the actual situation. The data storage module is used to store the carbon emission factor issued by the master station, the calculated carbon emissions, the electrical quantity obtained by the electrical parameter measurement module, and the record and storage of emergencies.

[0080] The electrical parameter measurement module is used to detect the electrical parameters of the power system in real time, and the electrical parameters include voltage, current and the phase difference between voltage and current; the electrical parameters may include voltage, current, power, fundamental wave, phase angle, etc.;

[0081] The central processing unit module calculates and obtains the carbon emission amount according to the voltage, current, phase difference between the voltage and current detected in real time by the voltage measurement module and the carbon emission factor sent by the master station.

[0082] Furthermore, in this embodiment, the metering device further includes: a human-computer interaction module, a time calibration module and a watchdog module;

[0083] The human-computer interaction module is connected to the central processing unit module, the timing module and the watchdog module respectively;

[0084] The human-computer interaction module is used to visualize the carbon emissions calculated by the central processing unit module and the carbon emission factors in the data storage module; the human-computer interaction module is used to visualize the carbon emissions and the carbon emission factors issued by the master station; the human-computer interaction module can generate an information list in chronological order to provide users with demand responses and the operating status of the device.

[0085] The metering device performs time calibration with the main station through the time calibration module; the time calibration module is used to realize active time calibration between the device and the main station, and provide the device with accurate system time and accurate recording and positioning of events.

[0086] The metering device monitors the operating status of the central processing unit module through the watchdog module. The watchdog module is used to monitor the central processing unit module to avoid the downtime of the central processing unit module.

[0087] Furthermore, in this embodiment, the metering device also includes: a safety module, the safety module collects the working environment parameters of the metering device, and the central processing unit module performs safety monitoring and real-time protection on the metering device according to the working environment parameters. The safety module can also include a device for implementing physical protection of the device to prevent the device from being damaged by overvoltage, overcurrent, short circuit, water immersion, impact, etc. For example, the device shell is made of hydrophobic material, and pressure-sensitive elements are placed in important parts to effectively detect pressure changes outside the device. The protection level reaches IP55, and the inside is coated with an electromagnetic shielding layer. The device contains electrical protection and overvoltage and overcurrent detection to ensure the normal operation of the device.

[0088] Furthermore, in this embodiment, the metering device further includes: a power management module, which is a backup power supply for the metering device. The power management module is used to manage and distribute power supply to the device, provide a backup power supply for the device, and avoid data storage failure caused by power outages and affect event reporting.

[0089] Further, in this embodiment, the metering device further includes: an interface module, the interface module is connected to the central processing unit module, and the interface module includes an RS485 interface, a DL / T698.45 protocol interface, an analog interface, a digital interface and a standby interface;

[0090] The standby interface is used for subsequent component access;

[0091] The RS485 interface and the DL / T698.45 protocol interface communicate with the main station through the communication module;

[0092] The safety module is connected to the central processing unit module through the analog interface and the digital interface for data transmission. For example, the analog and digital interfaces communicate with the pressure-sensitive sensor and the temperature sensor to obtain the external working environment of the device, and are connected to the central processing unit to achieve shutdown protection under extreme conditions.

[0093] Further, in this embodiment, the metering device further includes: a first isolation module and a second isolation module;

[0094] The first isolation module is connected to the central processing unit module, and is used to isolate the electric field and magnetic field inside the metering device to avoid mutual interference between the electric signal and the magnetic field signal inside the device.

[0095] The second isolation module is connected to the interface module, and is used to avoid coupling between electrical signals of different frequencies in the interface module, thereby avoiding mutual interference and causing calculation errors in the central processing unit module.

[0096] The present invention detects the voltage, current and phase difference between the voltage and current of the power system in real time through the electrical parameter measurement module. The central processing unit module can accurately calculate the real-time power of the power system. Combined with the carbon emission factor issued by the master station, the central processing unit module can accurately calculate the carbon emissions generated by the power system. This dynamic calculation method is more accurate than the traditional static carbon emission estimation method. The device can provide accurate data support for the formulation of national or regional environmental protection policies.

[0097] Embodiment 2

[0098] A carbon emission measurement method based on a dynamic carbon emission factor, the measurement method is applicable to the measurement device as described above, Figure 2 FIG. 1 shows a schematic diagram of the overall process of an embodiment of the present invention. Figure 2 As shown, the measurement method includes:

[0099] The central processing module obtains the first carbon emission factor from the main station in real time through the communication module and stores it in the data storage unit;

[0100] The electrical parameter measurement module obtains the voltage, current and phase angle between the voltage and current of the power system;

[0101] Verifying the operating state of the power system by using the voltage, current and phase angle between the voltage and current of the power system;

[0102] If the operating state of the power system is normal, the real-time power and electric energy of the power system are calculated by using the voltage, current and the phase angle between the voltage and the current;

[0103] Calculate and obtain the carbon emissions of the power system using the real-time power and the first carbon emission factor;

[0104] If the operating status of the power system is abnormal, an early warning will be issued.

[0105] Specific verification includes:

[0106] The measured voltage is compared with the rated voltage. If it is seriously lower than the rated voltage, it means that the system has a short circuit or voltage drop, and a system short circuit alarm is sent to the master station.

[0107] The measured current is compared with the rated current. If it is significantly lower than the rated current, it indicates that the system is short-circuited, and a system short-circuit alarm is sent to the master station.

[0108] If the measured voltage is lower than the rated voltage, or the measured current is lower than the rated current, it means that the system load is too large, and a system voltage adjustment alarm is sent to the master station;

[0109] Using the voltage, current and the phase angle between the voltage and current, determine whether the power factor of the current system is lower than a given value, and if lower than the given value, send an early warning of power system adjustment correction to the master station;

[0110] The calculated electric energy is displayed in real time through the human-computer interaction module to form a dynamic electric energy curve. The real-time data is reported to the main station in real time through the communication module.

[0111] The calculated electric energy is compared with the given electric energy of the system to determine whether there is any electric theft. If it exceeds the given electric energy of the system, electric theft occurs and an electric theft alarm is sent to the master station.

[0112] Further, in this embodiment, the measurement method further includes verifying the first carbon emission factor;

[0113] The verification includes:

[0114] The verification includes:

[0115] According to the historical record values ​​of the carbon emission factor, a carbon emission factor time series is formed in chronological order, and the carbon emission factor time series is a carbon emission factor time series sample;

[0116] Using the d-order difference method and the carbon emission factor time series, a stationary sequence is obtained; based on the carbon emission factor time series, the variation characteristics of the sample are analyzed to test whether the carbon emission factor sample is stationary. If it does not meet the stationary requirement, the d-order difference method is used to make it meet the stationary requirement, and the newly formed stationary sequence X1(t);

[0117] The current carbon emission factor is predicted using the stationary sequence to obtain the second carbon emission factor X 1 ,include:

[0118] From the perspective of time domain, the stationary sequence X1(t) is analyzed by spectral analysis, adaptive filtering and other methods to determine whether it has periodicity, as shown in the following formula:

[0119] X1(t)=X1(t-Tk)

[0120] In the formula, T represents the period, and k represents the number of periods. If it is established, it means that it has strong periodic characteristics and satisfies the periodicity.

[0121] The current carbon emission factor is predicted by using the periodic regression fitting method for the stationary sequence that meets the periodicity; as shown in the following formula:

[0122]

[0123] In the formula, T represents the period, k i represents the i-th cycle; a i represents the number of times corresponding to the i-th cycle; where a i satisfy

[0124] For the stationary sequence that does not satisfy periodicity, the current carbon emission factor is predicted using Fourier distribution;

[0125] Draw its autocorrelation function (ACF) and partial autocorrelation function (PACF) graphs, and complete the prediction of the current carbon emission factor based on the truncation and tailing characteristics of ACF and PACF. When ACF and PACF show different truncation and tailing characteristics, it indicates that they have weak periodic characteristics. When ACF and PACF both show tailing characteristics, it indicates that the time series samples of the carbon emission factor do not have any periodicity. Discretize the carbon emission factor time series and perform Fourier distribution. Analyze the peak value, phase angle and other related spectrum variation laws of the carbon emission factor from the perspective of frequency domain, select the appropriate peak value and its corresponding phase angle, determine the number of Fourier distribution items, use inverse Fourier transformation to determine the amplitude, phase angle and frequency of each item, and generate a fitting function based on the superposition principle to complete the prediction of the carbon emission factor.

[0126] Calculate the mean, variance, and standard deviation σ of the carbon emission factor time series samples, and use the 3 times standard deviation method to obtain the carbon emission factor threshold;

[0127] 3σ|<|XX 1

[0128] Where X represents the first carbon emission factor, X 1 represents the second carbon emission factor, σ represents the standard deviation of the first carbon emission factor;

[0129] Comparing the second carbon emission factor with the first carbon emission factor to obtain a comparison result;

[0130] If the comparison result is within the carbon emission factor threshold, the carbon emission of the electricity system is calculated using the first carbon emission factor;

[0131] If the comparison result is not within the carbon emission factor threshold, a feedback signal is sent to the main station to confirm whether the first carbon emission factor at the current moment is accurate.

[0132] Furthermore, in this embodiment, the metering method also includes verifying the working state of the metering device. The working state verification includes verifying the operating state of the system by collecting electrical quantities such as voltage, current, fundamental wave, phase angle, power angle, etc. It may also be through the collected temperature, humidity, pressure, etc. to compare the threshold value to verify the operating state of the system. After verifying that it is a normal working state, the real-time power calculation continues. If it is an abnormal working state, the state is reported and the shutdown protection is performed.

[0133] Furthermore, in this embodiment, the calculated carbon emissions of the electricity system are compared with a set carbon emission threshold to see whether it exceeds the range. If it exceeds the range, an early warning is issued and recorded.

[0134] Further, in this embodiment,

[0135] The real-time power of the power system is calculated using the following formula:

[0136] P=UIcosθ

[0137] Wherein, P represents the real-time power of the power system, U represents the real-time voltage of the power system, I represents the real-time current of the power system; θ represents the phase difference between voltage and current;

[0138] The carbon emissions of the electricity system are calculated using the following formula:

[0139] EC=∫Pmdt

[0140] Wherein, is the carbon emission from EC to the target system; P is the real-time power of the target system; and m is the first carbon emission factor.

[0141] The metering method further includes: obtaining the working environment parameters of the power system, temperature T, humidity F, wind speed v, pressure P, and power grid environment L;

[0142] The working environment parameters of the power system are compared with the nameplate parameters of the equipment, namely, temperature T0, humidity F0, wind speed v0, pressure P0, and power grid environment L0;

[0143] The thresholds of the nameplate parameters temperature T0, humidity F0, wind speed v0, pressure P0, and power grid environment L0 given by the preset equipment are ΔT0, ΔF0, Δv0, ΔP0, and ΔL0 respectively;

[0144] Compare the working environment parameter threshold with the working parameters set on the nameplate and the actual working parameters of the equipment to obtain a comparison result;

[0145]

[0146] If the above formula is established, it means that the actual working environment parameters of the device meet the conditions, and the working state is normal and continues to run. Otherwise, it means that the actual working environment parameters of the device do not meet the conditions, and the working state is abnormal. Then the device will be shut down and the corresponding event will be urgently reported to the master station.

[0147] In case of sudden power outage, the emergency event will be recorded and the data will be stored;

[0148] The comparison result and the record of the emergency event are uploaded to the main station.

[0149] The metering method of this embodiment is simple to calculate and can accurately and quickly calculate the carbon emissions generated by the electricity system.

[0150] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

[0151] In the above description, the technical details of patterning and etching of each layer are not described in detail. However, those skilled in the art should understand that various means in the prior art can be used to form layers, regions, etc. of desired shapes. In addition, in order to form the same structure, those skilled in the art can also design methods that are not completely the same as the methods described above.

[0152] The present invention has been described above with reference to the embodiments of the present invention. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Without departing from the scope of the present invention, a person skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present invention.

[0153] Although the embodiments of the present invention have been described in detail, it should be understood that the various changes, substitutions, and alterations could be made hereto without departing from the spirit and scope of the invention.

[0154] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A carbon emission metering device based on a dynamic carbon emission factor, characterized in that: The metering device is arranged in an electric meter, the electric meter is connected to the electric power system, and the metering device comprises: Central processing unit module, data storage module, communication module and electrical parameter measurement module; The central processing unit module is connected to the data storage module, the communication module, and the electrical parameter measurement module respectively; The central processing unit module exchanges information with the main station through the communication module; The central processing unit module stores data through the data storage module, wherein the stored data includes the carbon emission factor sent by the master station; The electrical parameter measurement module is used to detect the electrical parameters of the power system in real time, and the electrical parameters include voltage, current and the phase difference between voltage and current; The central processing unit module calculates and obtains the carbon emission amount according to the voltage, current, phase difference between the voltage and current detected in real time by the voltage measurement module and the carbon emission factor sent by the master station.

2. The metering device according to claim 1, characterized in that The metering device also includes: a human-computer interaction module, a time calibration module and a watchdog module; The human-computer interaction module is connected to the central processing unit module, the timing module and the watchdog module respectively; The human-computer interaction module is used to visualize the carbon emissions calculated by the central processing unit module and the carbon emission factors in the data storage module; The metering device performs time calibration with the master station through the time calibration module; The metering device monitors the operating status of the central processing unit module through the watchdog module.

3. The metering device according to claim 1, characterized in that The metering device further comprises: a safety module, wherein the safety module collects working environment parameters of the metering device, and the central processing unit module performs safety monitoring and real-time protection on the metering device according to the working environment parameters.

4. The metering device according to claim 1, characterized in that: The metering device further includes: a power management module, and the power management module is a backup power supply for the metering device.

5. The metering device according to claim 3, characterized in that: The metering device further comprises: an interface module, the interface module is connected to the central processing unit module, the interface module comprises an RS485 interface, a DL / T698.45 protocol interface, an analog quantity interface, a digital quantity interface and a standby interface; The standby interface is used for subsequent component access; The RS485 interface and the DL / T698.45 protocol interface communicate with the main station through the communication module; The security module is connected to the central processing unit module via the analog quantity interface and the digital quantity interface for data transmission.

6. The metering device according to claim 1, characterized in that: The metering device further includes: a first isolation module and a second isolation module; The first isolation module is connected to the central processing unit module, and the first isolation module is used to isolate the electric field and magnetic field inside the metering device; The second isolation module is connected to the interface module, and the second isolation module is used to avoid coupling between electrical signals of different frequencies in the interface module.

7. A carbon emission measurement method based on a dynamic carbon emission factor, characterized in that: The metering method is applicable to the metering device according to any one of claims 1 to 6, and the metering method comprises: The central processing module obtains the first carbon emission factor from the main station in real time through the communication module and stores it in the data storage unit; The electrical parameter measurement module obtains the voltage, current and phase angle between the voltage and current of the power system; Verifying the operating state of the power system by using the voltage, current and phase angle between the voltage and current of the power system; If the operating state of the power system is normal, the real-time power of the power system is calculated using the voltage, current and the phase angle between the voltage and the current; Calculate and obtain the carbon emissions of the power system using the real-time power and the first carbon emission factor; If the operating status of the power system is abnormal, an early warning will be issued.

8. The measuring method according to claim 7, characterized in that: The measurement method further includes verifying the first carbon emission factor; The verification includes: According to the historical record values ​​of the carbon emission factor, a carbon emission factor time series is formed in chronological order, and the carbon emission factor time series is a carbon emission factor time series sample; Using the d-order difference method and the carbon emission factor time series, a stationary series is obtained; The current carbon emission factor is predicted using the stationary sequence to obtain a second carbon emission factor, including: For the stationary sequence that meets the periodicity, the current carbon emission factor is predicted by using a periodic regression fitting method; For the stationary sequence that does not satisfy periodicity, the current carbon emission factor is predicted using Fourier distribution; Calculate the mean, variance, and standard deviation σ of the carbon emission factor time series samples, and use the 3 times standard deviation method to obtain the carbon emission factor threshold; Comparing the second carbon emission factor with the first carbon emission factor to obtain a comparison result; If the comparison result is within the carbon emission factor threshold, the carbon emission of the electricity system is calculated using the first carbon emission factor; If the comparison result is not within the carbon emission factor threshold, a feedback signal is sent to the main station to confirm whether the first carbon emission factor at the current moment is accurate.

9. The measuring method according to claim 7, characterized in that: The real-time power of the power system is calculated using the following formula: P=UIcosθ Wherein, p represents the real-time power of the power system, U represents the real-time voltage of the power system, I represents the real-time current of the power system; θ represents the phase difference between voltage and current; The carbon emissions of the electricity system are calculated using the following formula: EC=∫Pmdt Wherein, is the carbon emission from EC to the target system; P is the real-time power of the target system; and m is the first carbon emission factor.

10. The measuring method according to claim 7, characterized in that: The measurement method also includes: Obtain the working environment parameters of the power system, including temperature T, humidity F, wind speed v, pressure P, and power grid environment L; The working environment parameters of the power system are compared with the nameplate parameters of the equipment, namely, temperature T0, humidity F0, wind speed v0, pressure P0, and power grid environment L0; The thresholds of the nameplate parameters temperature T0, humidity F0, wind speed v0, pressure P0, and power grid environment L0 given by the preset equipment are ΔT0, ΔF0, Δv0, ΔP0, and ΔL0 respectively; Compare the working environment parameter threshold with the working parameters set on the nameplate and the actual working parameters of the equipment to obtain a comparison result; If the above formula is established, it means that the actual working environment parameters of the device meet the conditions, and the working state is normal and continues to run. Otherwise, it means that the actual working environment parameters of the device do not meet the conditions, and the working state is abnormal. Then the device will be shut down and the corresponding event will be urgently reported to the master station. In case of sudden power outage, the emergency event will be recorded and the data will be stored; The comparison result and the record of the emergency event are uploaded to the main station.

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