A dual power supply metering monitoring method and control device based on power lines

Abstract

The present invention discloses a dual power supply metering monitoring method and control device based on power lines, and relates to the technical field of power system monitoring. The dual power supply metering monitoring method based on power lines includes the following steps: collecting electrical data; analyzing the electrical data to obtain the data monitoring accuracy of the first power supply; analyzing the electrical data to obtain the data monitoring accuracy of the second power supply; analyzing the electrical data to obtain the dual power supply regulation and control situation and make early warning reminders. The present invention analyzes the electrical data to obtain the dual power supply regulation and control situation and makes early warning reminders, thereby clarifying the accuracy of data monitoring and making adjustments, achieving the effect of accurately regulating the monitoring operation of dual power supply metering, and solving the problem in the prior art that it is difficult to accurately regulate the monitoring operation of dual power supply metering due to insufficient data monitoring accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of power system monitoring, and in particular to a dual power supply metering monitoring method and a control device based on a power line. Background Art

[0002] In modern society, electricity is an indispensable resource. In order to ensure the reliability of power supply, it is usually necessary to adopt a dual power supply or multiple power supply system. In this way, when a power supply has a problem, other power supplies can take over immediately to ensure the normal power consumption of users. Accurate measurement of power usage is crucial for both power companies and users. Metering monitoring can not only help power companies charge reasonably, but also help users understand their own power consumption and save energy and reduce emissions. In the existing power system, dual power supply is widely used. However, the existing dual power supply metering monitoring methods often have problems such as low data monitoring accuracy and inaccurate regulation, which affects the operating efficiency and safety of the power system.

[0003] The existing power metering and monitoring system converts high voltage and high current into low voltage and low current through current and voltage transformers installed on power lines, and measures and controls the low voltage and low current to achieve power metering and monitoring functions.

[0004] For example, the invention patent with announcement number: CN103983845B discloses a distributed power source access user bidirectional metering and monitoring system and method, including: a user power supply bus, a public power grid, a user power load, a distributed power generation system and a user bidirectional metering and monitoring system. The user bidirectional metering and monitoring system includes a processor module, an AD conversion module, a 2-way voltage acquisition module, a 2-way current acquisition module, a display module, a storage module, a button module, a communication module, a power module, a voltage acquisition sensor and a current acquisition sensor.

[0005] For example, the patent application with publication number: CN114924117A discloses a monitoring circuit and a monitoring method for a supercapacitor in an electric energy meter, which include: a power supply for providing electric energy; a supercapacitor for providing electric energy as a backup power supply; a charging unit electrically connected to the supercapacitor, the power supply and the MCU unit, and used to allow the power supply to charge / stop charging the supercapacitor; a discharging unit electrically connected to the supercapacitor and the MCU unit, and used to allow the supercapacitor to discharge / stop discharging; a sampling unit electrically connected to the supercapacitor and the MCU unit, and used to sample / stop sampling the electrical parameter signal when the supercapacitor is charged and discharged; and an MCU unit for sending a control signal.

[0006] However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the present application found that the above technology has at least the following technical problems:

[0007] In the prior art, errors may accumulate in monitoring and metering equipment during long-term operation. The equipment may not be able to respond in time to rapidly changing power systems. The equipment may be interfered with in complex electromagnetic environments, affecting its normal operation, resulting in insufficient accuracy of the data obtained. There is a problem that it is difficult to accurately regulate the monitoring operation of dual power supply metering due to insufficient data monitoring accuracy. Summary of the invention

[0008] The embodiments of the present application provide a dual power supply metering monitoring method and control device based on power lines, thereby solving the problem in the prior art that it is difficult to accurately regulate the monitoring operation of dual power supply metering due to insufficient data monitoring accuracy, thereby achieving accurate regulation of the monitoring operation of dual power supply metering.

[0009] An embodiment of the present application provides a dual power supply metering and monitoring method based on a power line, comprising the following steps: collecting electrical data; analyzing the electrical data to obtain the accuracy of data monitoring of the first power supply; analyzing the electrical data to obtain the accuracy of data monitoring of the second power supply; analyzing the electrical data to obtain the dual power supply regulation status and issuing an early warning reminder.

[0010] Furthermore, the specific analysis process of analyzing the electrical data to obtain the data monitoring accuracy of the first power supply is: obtaining the first power supply monitoring parameter data by collecting the electrical data; normalizing the first power supply monitoring parameter data; analyzing the normalized first power supply monitoring parameter data to obtain the first power supply monitoring accuracy index, which is used to evaluate the monitoring accuracy of the first power supply data; analyzing the first power supply monitoring accuracy index to obtain the data monitoring accuracy of the first power supply.

[0011] Furthermore, the specific analysis process of analyzing the first power supply monitoring accuracy index to derive the data monitoring accuracy of the first power supply is: obtaining the first power supply monitoring accuracy index, obtaining the first power supply accuracy threshold, comparing the first power supply monitoring accuracy index with the first power supply accuracy threshold, when the first power supply monitoring accuracy index is less than the first power supply accuracy threshold, it indicates that the data monitoring of the first power supply is in an accurate state; when the first power supply monitoring accuracy index is not less than the first power supply accuracy threshold, it indicates that the data monitoring of the first power supply is inaccurate, and the data monitoring of the first power supply is adjusted.

[0012] Furthermore, the specific method for obtaining the first power supply monitoring accuracy index is: setting a time monitoring point and numbering the time monitoring point; sampling data at the time monitoring point, obtaining the number of data samplings, and numbering the number of data samplings; obtaining the first power supply monitoring parameter data; constructing a calculation formula for the first power supply monitoring accuracy index; the specific calculation formula for the first power supply monitoring accuracy index is:

[0013]

[0014] In the formula, It indicates the first power supply monitoring accuracy index at the s0th time monitoring point, s0 = 1, 2, ..., s, s indicates the total number of time monitoring points, represents the first power supply monitoring current at the y0th data sampling at the s0th time monitoring point, y0=1,2,...,y, y represents the total number of data sampling times, represents the standard current of the first power supply at the s0th time monitoring point, represents the first power supply monitoring voltage at the y0th data sampling at the s0th time monitoring point, represents the first power supply standard voltage at the s0th time monitoring point, represents the first power supply monitoring power at the y0th data sampling at the s0th time monitoring point, represents the standard power of the first power supply at the s0th time monitoring point, Indicates the first power supply monitoring duration at the y0th data sampling at the s0th time monitoring point, It represents the standard duration of the first power supply monitoring at the s0th time monitoring point, A1 represents the weight ratio of the first power supply monitoring current in the first power supply monitoring accuracy index, A2 represents the weight ratio of the first power supply monitoring voltage in the first power supply monitoring accuracy index, A3 represents the weight ratio of the first power supply monitoring power in the first power supply monitoring accuracy index, and A4 represents the weight ratio of the first power supply monitoring duration in the first power supply monitoring accuracy index.

[0015] Furthermore, the specific analysis process of analyzing the electrical data to obtain the data monitoring accuracy of the second power supply is: obtaining second power supply monitoring parameter data by collecting electrical data; performing data processing on the second power supply monitoring parameter data; analyzing the processed second power supply monitoring parameter data to obtain a second power supply monitoring accuracy index, wherein the second power supply monitoring accuracy index is used to reflect the monitoring accuracy of the second power supply data; and analyzing the data monitoring accuracy of the second power supply according to the second power supply monitoring accuracy index.

[0016] Furthermore, the specific analysis process of analyzing the accuracy of data monitoring of the second power supply according to the second power supply monitoring accuracy index is: obtaining the second power supply monitoring accuracy index, obtaining the second power supply accuracy threshold, comparing the second power supply monitoring accuracy index with the second power supply accuracy threshold, when the second power supply monitoring accuracy index is less than the second power supply accuracy threshold, it indicates that the data monitoring of the second power supply is in an accurate state; when the second power supply monitoring accuracy index is not less than the second power supply accuracy threshold, it indicates that the data monitoring of the second power supply is inaccurate, and the data monitoring of the second power supply is adjusted.

[0017] Furthermore, the specific analysis process of analyzing the electrical data to obtain the dual power supply regulation status and issue early warning reminders is: obtaining power consumption status parameter data by collecting electrical data; preprocessing the power consumption status parameter data; analyzing the preprocessed power consumption status parameter data to obtain a power consumption status evaluation index, wherein the power consumption status evaluation index is used to reflect the accuracy of the power consumption status; analyzing the dual power supply regulation status according to the power consumption status evaluation index and issuing early warning reminders.

[0018] Furthermore, the specific analysis process of analyzing the dual power supply regulation situation according to the power consumption status evaluation index and issuing early warning reminders is: obtaining the power consumption status evaluation index, obtaining the power consumption status evaluation threshold, comparing the power consumption status evaluation index with the power consumption status evaluation threshold, when the power consumption status evaluation index is greater than the power consumption status evaluation threshold, it indicates that the power supply used is the second power supply; when the power consumption status evaluation index is not greater than the power consumption status evaluation threshold, it indicates that the power supply used is the first power supply; obtaining the actual power supply actually used at the time monitoring point corresponding to the power consumption status evaluation index, comparing the actual power supply with the power supply used obtained by analyzing the power consumption status evaluation index, when the actual power supply is consistent with the power supply used, it indicates that the dual power supply regulation situation is normal; when the actual power supply is inconsistent with the power supply used, it indicates that the dual power supply regulation situation is abnormal, and an early warning reminder is issued.

[0019] Furthermore, the specific method for obtaining the power consumption status evaluation index is as follows: setting a time monitoring point and numbering the time monitoring point; sampling data at the time monitoring point, obtaining the number of data samplings, and numbering the number of data samplings; obtaining power consumption status parameter data; constructing a calculation formula for the power consumption status evaluation index; the specific calculation formula for the power consumption status evaluation index is:

[0020]

[0021] In the formula, represents the power consumption status evaluation index at the s0th time monitoring point, s0=1,2,...,s, s represents the total number of time monitoring points, represents the second power supply monitoring voltage at the y0th data sampling at the s0th time monitoring point, y0=1,2,...,y, y represents the total number of data sampling times, represents the remaining power of the second power supply at the y0th data sampling at the s0th time monitoring point, represents the power switching voltage at the s0th time monitoring point, Indicates the power recovery voltage at the monitoring point at time s0, It represents the power switching power at the s0th time monitoring point, T1 represents the weight ratio of the power switching voltage in the power usage status assessment index, T2 represents the weight ratio of the power recovery voltage in the power usage status assessment index, and T3 represents the weight ratio of the power switching power in the power usage status assessment index.

[0022] The embodiment of the present application provides a monitoring and control device for a dual power supply metering monitoring method based on an electric power line, comprising: a data acquisition device, an automatic identification battery switcher, a controller and an early warning device; the data acquisition device comprises: an ammeter installed in the power line, for acquiring a first power supply monitoring current and a second power supply monitoring current; a voltmeter installed in the power line, for acquiring a first power supply monitoring voltage and a second power supply monitoring voltage; an electric energy data recorder installed in the power line, for acquiring the remaining power of the second power supply; a power analyzer installed in the power line, for acquiring the first power supply monitoring power; a timer installed in the power line, for acquiring the first power supply monitoring duration; the automatic identification battery switcher, for regulating and switching the first power supply and the second power supply; the first power supply is a power grid; the second power supply is a backup power supply; the controller, for acquiring data obtained by the data acquisition device and the automatic identification battery switcher status data, and outputting early warning information after analysis and processing; an early warning device, for issuing early warning information for early warning reminders.

[0023] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0024] 1. By collecting electrical data, analyzing the electrical data to obtain the accuracy of data monitoring of the first power supply, analyzing the electrical data to obtain the accuracy of data monitoring of the second power supply, analyzing the electrical data to obtain the dual power supply control situation and issue early warning reminders, so as to clarify the accuracy of data monitoring and make adjustments, thereby achieving accurate control of the monitoring operation of dual power supply metering, effectively solving the problem in the prior art that it is difficult to accurately control the monitoring operation of dual power supply metering due to insufficient data monitoring accuracy.

[0025] 2. The first power supply monitoring accuracy index is obtained by analyzing the first power supply monitoring parameter data, and the data monitoring accuracy of the first power supply is obtained by analyzing the first power supply monitoring accuracy index, so as to accurately and efficiently clarify the data monitoring status of the first power supply, and then realize the monitoring adjustment according to the data monitoring status of the first power supply, thereby improving the accuracy of the first power supply monitoring data.

[0026] 3. The power status evaluation index is obtained by analyzing the power status parameter data, and the dual power supply regulation situation is analyzed according to the power status evaluation index and early warning reminders are issued, so as to regulate the monitoring operation of the dual power supply metering, and then the first power supply and the second power supply are switched quickly and efficiently according to the data obtained from the monitoring operation of the dual power supply metering, thereby improving the operating efficiency and safety of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A flow chart of a dual power supply metering and monitoring method based on power lines provided in an embodiment of the present application;

[0028] Figure 2 A curve chart of the second power supply monitoring accuracy index provided in an embodiment of the present application;

[0029] Figure 3 A schematic diagram of the structure of a monitoring and control device for a dual power supply metering monitoring method based on a power line provided in an embodiment of the present application;

[0030] Figure 4 The automatic mode switching grid status display diagram provided in the embodiment of the present application;

[0031] Figure 5 A diagram showing the power supply status of a power grid provided in an embodiment of the present application;

[0032] Figure 6 An automatic mode switching inverter state display diagram provided in an embodiment of the present application;

[0033] Figure 7 This is a display diagram of the inverter power supply status provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The embodiment of the present application solves the problem in the prior art that it is difficult to accurately regulate the monitoring operation of dual power supply metering due to insufficient data monitoring accuracy by providing a dual power supply metering monitoring method and control device based on power lines. The method collects electrical data, analyzes the electrical data to obtain the data monitoring accuracy of the first power supply, analyzes the electrical data to obtain the data monitoring accuracy of the second power supply, analyzes the electrical data to obtain the dual power supply regulation status and issues early warning reminders, thereby clarifying the accuracy of data monitoring and making adjustments, thereby achieving accurate regulation of the monitoring operation of dual power supply metering.

[0035] The technical solution in the embodiment of the present application is to solve the above problem that it is difficult to accurately regulate the monitoring operation of dual power supply metering due to insufficient data monitoring accuracy. The overall idea is as follows:

[0036] The first power supply monitoring parameter data is obtained by collecting electrical data, the first power supply monitoring parameter data is normalized, the normalized first power supply monitoring parameter data is analyzed to obtain the first power supply monitoring accuracy index, the first power supply monitoring accuracy index is analyzed to obtain the data monitoring accuracy of the first power supply, the second power supply monitoring parameter data is obtained by collecting electrical data, the second power supply monitoring parameter data is data processed, the second power supply monitoring parameter data after data processing is analyzed to obtain the second power supply monitoring accuracy index, the data monitoring accuracy of the second power supply is analyzed according to the second power supply monitoring accuracy index, the power consumption status parameter data is obtained by collecting electrical data, the power consumption status parameter data is preprocessed, the preprocessed power consumption status parameter data is analyzed to obtain the power consumption status evaluation index, the dual power supply regulation situation is analyzed according to the power consumption status evaluation index and early warning reminders are issued, thereby achieving the effect of accurately regulating the monitoring operation of dual power supply metering.

[0037] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] like Figure 1 As shown, it is a flow chart of a dual power supply metering and monitoring method based on power lines provided in an embodiment of the present application. The method is applied to a dual power supply metering and monitoring device based on power lines. The method includes the following steps: collecting electrical data; analyzing the electrical data to obtain the accuracy of data monitoring of the first power supply; analyzing the electrical data to obtain the accuracy of data monitoring of the second power supply; analyzing the electrical data to obtain the dual power supply control situation and issuing early warning reminders.

[0039] In this embodiment, the accuracy of the data monitoring of the first power supply is obtained by analyzing, and the accuracy of the data monitoring of the first power supply is clarified. If it is inaccurate, adjustments are made to make the data monitoring accurate, so that the subsequent data monitoring process of the first power supply is more accurate, and the second power supply is the same. After the adjustment, the accuracy and reliability of the data obtained by monitoring the first power supply and the second power supply are higher.

[0040] Dual power supply metering monitoring can also be performed by the following method, including: respectively collecting electrical data corresponding to the first power supply and the second power supply through the power line monitoring interface, and uploading the electrical data to the data processing center for data processing according to the dual-channel precision microprocessor, thereby obtaining the data monitoring accuracy corresponding to the first power supply and the second power supply, thereby accurately regulating the monitoring operation of the dual power supply metering.

[0041] The first power source and the second power source are different power sources. For example, the first power source is city power, and the second power source is a backup power source generated by photovoltaic power generation or wind power generation.

[0042] Furthermore, the specific analysis process of analyzing the electrical data to obtain the data monitoring accuracy of the first power supply is: obtaining the first power supply monitoring parameter data by collecting the electrical data; normalizing the first power supply monitoring parameter data; analyzing the normalized first power supply monitoring parameter data to obtain the first power supply monitoring accuracy index, which is used to evaluate the monitoring accuracy of the first power supply data; analyzing the first power supply monitoring accuracy index to obtain the data monitoring accuracy of the first power supply.

[0043] In this embodiment, electrical data can be collected through the power line monitoring interface, and parameters such as voltage, current, power, power factor, and electric energy can also be obtained through power meters, multi-function power meters, power sensors, SCADA (supervisory control and data acquisition) systems, smart grids, and smart meters. The acquired parameters are extracted to obtain electrical data, and the electrical data includes first power supply monitoring parameter data, second power supply monitoring parameter data, and power usage status parameter data.

[0044] The first power supply monitoring parameter data is normalized, including scaling the data to a range, such as [0, 1], [-1, 1] or [0, 100], etc., through normalization methods such as Min-Max Scaling, Z-Score Normalization, and Decimal Scaling. This range depends on the characteristics of the data and the application scenario. The normalized data are easier to understand and interpret because they are within an intuitive scale range. The normalized data have similar scales, which facilitates the use of data for specific calculations. It is beneficial to obtain a more accurate first power supply monitoring accuracy indicator by analyzing the first power supply monitoring parameter data after normalization, and the data monitoring accuracy of the first power supply can be analyzed in more detail and specifically through the more accurate first power supply monitoring accuracy indicator.

[0045] Furthermore, the specific analysis process of analyzing the first power supply monitoring accuracy index to obtain the data monitoring accuracy of the first power supply is: obtain the first power supply monitoring accuracy index, obtain the first power supply accuracy threshold, compare the first power supply monitoring accuracy index with the first power supply accuracy threshold, when the first power supply monitoring accuracy index is less than the first power supply accuracy threshold, it indicates that the data monitoring of the first power supply is in an accurate state; when the first power supply monitoring accuracy index is not less than the first power supply accuracy threshold, it indicates that the data monitoring of the first power supply is inaccurate, and the data monitoring of the first power supply is adjusted.

[0046] In this embodiment, the first power supply accuracy threshold is obtained, and the first power supply accuracy threshold is γ=|sinh(-0.2)|. The first power supply monitoring accuracy index is compared with the first power supply accuracy threshold. When the first power supply monitoring accuracy index is less than the first power supply accuracy threshold, that is, When , it indicates that the data monitoring of the first power source is in an accurate state; when the first power source monitoring accuracy index is not less than the first power source accuracy threshold, that is When the first power source data monitoring is inaccurate, the data monitoring of the first power source is adjusted. By analyzing the first power source monitoring accuracy index, the accuracy of the monitoring of the first power source can be accurately determined, and relevant adjustments to the monitoring can be made according to the accuracy.

[0047] The adjustment includes adjusting the connection method and connection tightness of the multimeter, checking whether there is poor contact, correcting it if there is, verifying the timeliness and accuracy of the monitoring equipment, and making corrections so that the monitoring equipment can better monitor the first power supply and make the corresponding monitoring data more accurate.

[0048] Furthermore, the first power supply monitoring accuracy index can be obtained through a variety of methods, including but not limited to: collecting parameter data such as voltage, current, power, power generation, load rate, etc. through smart grid equipment, telemetry systems, power quality monitors, etc., using mathematical methods such as filtering, threshold detection and data smoothing technology to clean up parameter data, and conducting in-depth analysis of parameter data through statistical analysis and time series analysis methods, such as regression analysis, moving average, exponential smoothing, etc., to clarify the accuracy of data monitoring. The first power supply monitoring accuracy index can also be calculated. The specific method for obtaining the first power supply monitoring accuracy index is: setting time monitoring points and numbering the time monitoring points; sampling data at the time monitoring points, obtaining the number of data sampling times, and numbering the number of data sampling times; obtaining the first power supply monitoring parameter data; constructing the first power supply monitoring accuracy index calculation formula; the specific first power supply monitoring accuracy index calculation formula is:

[0049]

[0050] In the formula, It indicates the first power supply monitoring accuracy index at the s0th time monitoring point, s0 = 1, 2, ..., s, s indicates the total number of time monitoring points, represents the first power supply monitoring current at the y0th data sampling at the s0th time monitoring point, y0=1,2,...,y, y represents the total number of data sampling times, represents the standard current of the first power supply at the s0th time monitoring point, represents the first power supply monitoring voltage at the y0th data sampling at the s0th time monitoring point, represents the first power supply standard voltage at the s0th time monitoring point, represents the first power supply monitoring power at the y0th data sampling at the s0th time monitoring point, represents the standard power of the first power supply at the s0th time monitoring point, Indicates the first power supply monitoring duration at the y0th data sampling at the s0th time monitoring point, It represents the standard duration of the first power supply monitoring at the s0th time monitoring point, A1 represents the weight ratio of the first power supply monitoring current in the first power supply monitoring accuracy index, A2 represents the weight ratio of the first power supply monitoring voltage in the first power supply monitoring accuracy index, A3 represents the weight ratio of the first power supply monitoring power in the first power supply monitoring accuracy index, and A4 represents the weight ratio of the first power supply monitoring duration in the first power supply monitoring accuracy index.

[0051] In this embodiment, the value ranges of A1, A2, A3 and A4 are all (0, 1), and the sum of A1, A2, A3 and A4 is equal to 1. The first power supply monitoring current, the first power supply monitoring voltage and the first power supply monitoring power refer to the current, voltage and power obtained when monitoring the first power supply, and can be measured by devices such as ammeters, voltmeters and multimeters to obtain the first power supply monitoring current, the first power supply monitoring voltage and the first power supply monitoring power. The first power supply monitoring duration refers to the usage time from the start of monitoring the first power supply to obtaining all monitoring data, which can be obtained by devices such as timers, clocks and stopwatches. The first power supply standard current, the first power supply standard voltage, the first power supply standard power and the first power supply monitoring standard duration refer to the actual current, actual voltage, actual power and standard detection duration obtained by accurately measuring the first power supply, which can be obtained by a multimeter and a timer.

[0052] There is a certain correlation between the first power supply monitoring current, the first power supply monitoring voltage and the first power supply monitoring power. If the voltage increases and the impedance of the circuit remains unchanged, the current through the circuit will also increase. Conversely, if the voltage decreases, the current will also decrease. Similarly, if the impedance of the circuit increases (such as aging of the line or equipment), the current will decrease when the voltage remains unchanged. Power is the product of voltage and current, so when the voltage or current increases, if the two are not proportional, the change in power will depend on their relative changes. For example, at a constant voltage, doubling the current will result in a four-fold increase in power.

[0053] The algorithm of this embodiment uses nonlinear transformation, which can help smooth the impact of outliers and reduce the distortion of the overall evaluation by extreme cases. In data analysis, nonlinear transformation can be used to reveal complex patterns and relationships in the data, help better data fitting and classification, and help improve the robustness of the evaluation, making the calculated first power monitoring accuracy indicators more stable and reliable. In addition, each correction factor can be adjusted according to actual conditions to adapt to different project characteristics and environmental variables.

[0054] This embodiment effectively reduces the disadvantage of being unable to globally control the single factor and single solution in the actual generation of the project by comprehensively considering the first power supply monitoring current, the first power supply monitoring voltage, the first power supply monitoring power and the first power supply monitoring time, and takes the correlation of various key factors into consideration, so as to effectively and accurately evaluate the accuracy of the first power supply monitoring.

[0055] Furthermore, the specific analysis process of analyzing the electrical data to obtain the data monitoring accuracy of the second power supply is: obtaining the second power supply monitoring parameter data by collecting the electrical data; performing data processing on the second power supply monitoring parameter data; analyzing the processed second power supply monitoring parameter data to obtain a second power supply monitoring accuracy index, the second power supply monitoring accuracy index is used to reflect the monitoring accuracy of the second power supply data; analyzing the data monitoring accuracy of the second power supply according to the second power supply monitoring accuracy index.

[0056] In this embodiment, the second power supply monitoring parameter data can be obtained through a multimeter, an ammeter, and a voltmeter, etc. Data processing is performed on the second power supply monitoring parameter data, and the data processing includes data cleaning, data conversion, data organization, and data storage. Through data processing, the second power supply monitoring parameter data is cleaned, denoised, and missing values ​​are filled, so that the error rate of the second power supply monitoring parameter data is reduced and the accuracy is higher, which is conducive to obtaining a more accurate second power supply monitoring accuracy index based on the second power supply monitoring parameter data. By analyzing the second power supply monitoring accuracy index, it is conducive to obtaining the data monitoring accuracy of the second power supply in more detail and accurately.

[0057] Furthermore, the specific analysis process of analyzing the accuracy of data monitoring of the second power supply according to the second power supply monitoring accuracy index is: obtain the second power supply monitoring accuracy index, obtain the second power supply accuracy threshold, compare the second power supply monitoring accuracy index with the second power supply accuracy threshold, when the second power supply monitoring accuracy index is less than the second power supply accuracy threshold, it indicates that the data monitoring of the second power supply is in an accurate state; when the second power supply monitoring accuracy index is not less than the second power supply accuracy threshold, it indicates that the data monitoring of the second power supply is inaccurate, and the data monitoring of the second power supply is adjusted.

[0058] In this embodiment, the second power supply accuracy threshold is obtained, and the second power supply accuracy threshold is The second power monitoring accuracy indicator is compared with the second power accuracy threshold. When the second power monitoring accuracy indicator is less than the second power accuracy threshold, When , it indicates that the data monitoring of the second power supply is in an accurate state; when the second power supply monitoring accuracy index is not less than the second power supply accuracy threshold, that is When , it indicates that the data monitoring of the second power supply is inaccurate, and the data monitoring of the second power supply is adjusted. By analyzing the second power supply monitoring accuracy index, the accuracy of the second power supply monitoring can be accurately obtained, which is conducive to adjusting the monitoring of the second power supply according to the accuracy of the second power supply monitoring.

[0059] The adjustment includes adjusting the connection method and connection tightness of the multimeter, voltmeter and ammeter, checking whether there is poor contact, correcting it if there is, verifying the timeliness and accuracy of the monitoring equipment, and making corrections. If problems still exist after correction, replace the equipment so that the monitoring equipment can better monitor the second power supply and make the corresponding monitoring data more accurate.

[0060] The second power supply monitoring accuracy index can be obtained by the following methods, including: collecting data to obtain parameter data such as voltage and current, evaluating the accuracy of the monitoring data by comparing with the actual measured value or standard value, and calculating error indicators such as mean absolute error (MAE), mean square error (MSE), root mean square error (RMSE), etc. to quantify the accuracy. The second power supply monitoring accuracy index can also be obtained by calculation. The specific calculation formula for the second power supply monitoring accuracy index is:

[0061]

[0062] In the formula, It represents the second power supply monitoring accuracy index at the s0th time monitoring point, represents the second power supply monitoring current at the y0th data sampling at the s0th time monitoring point, represents the standard current of the second power supply at the s0th time monitoring point, represents the second power supply monitoring voltage at the y0th data sampling at the s0th time monitoring point, represents the standard voltage of the second power supply at the s0th time monitoring point, represents the remaining power of the second power supply at the y0th data sampling at the s0th time monitoring point, It represents the actual remaining power of the second power supply at the s0th time monitoring point, R1 represents the weight ratio of the second power supply monitoring current in the second power supply monitoring accuracy index, R2 represents the weight ratio of the second power supply monitoring voltage in the second power supply monitoring accuracy index, and R3 represents the weight ratio of the remaining power of the second power supply in the second power supply monitoring accuracy index.

[0063] The value ranges of R1, R2 and R3 are all (0, 1), and the sum of R1, R2 and R3 is equal to 1. The second power supply monitoring current, the second power supply monitoring voltage and the second power supply remaining power refer to the current data, voltage data and remaining power consumption of the second power supply obtained through monitoring, the second power supply standard current, the second power supply standard voltage and the second power supply actual remaining power refer to the current data, voltage data and remaining power consumption of the second power supply obtained under accurate measurement, and the above data can be obtained through smart grid, smart meter system, power analyzer, sensor and monitoring system.

[0064] There is a certain correlation between the second power supply monitoring current, the second power supply monitoring voltage and the second power supply remaining power. If the voltage increases, the current passing through the circuit will also increase if the impedance of the circuit remains unchanged. If the voltage decreases, the current will also decrease. Similarly, if the impedance of the circuit increases (such as aging of the line or equipment), the current will decrease if the voltage remains unchanged. The second power supply monitoring current, the second power supply monitoring voltage and the second power supply operating time are calculated to obtain the total power of the second power supply. If the load remains unchanged, the second power supply monitoring current and the second power supply monitoring voltage increase, and the remaining power of the second power supply is greater; if the load increases, the second power supply monitoring current and the second power supply monitoring voltage remain unchanged, and the remaining power of the second power supply is smaller.

[0065] The algorithm of this embodiment uses nonlinear transformation, which makes the algorithm more flexible and can more accurately describe the accuracy of the second power supply monitoring, thereby improving the accuracy of the algorithm. Nonlinear transformation can be used to map the objective function, making it easier to find the global minimum or maximum value and clarify the change rate and trend of the objective function. In data analysis, nonlinear transformation can be used to reveal complex patterns and relationships in the data, help to better fit and classify the data, and make the calculated second power supply monitoring accuracy indicators more stable and reliable. In addition, each correction factor can be adjusted according to the actual situation to adapt to different project characteristics and environmental variables.

[0066] This embodiment effectively reduces the disadvantage of being unable to globally control a single factor and a single solution in the actual generation of a project by comprehensively considering the second power supply monitoring current, the second power supply monitoring voltage and the second power supply remaining power, takes the correlation of various key factors into consideration, and obtains data multiple times and performs averaging processing to make the data more accurate, making the accuracy assessment of the second power supply monitoring more effective and precise.

[0067] Furthermore, the specific analysis process of analyzing the electrical data to obtain the dual power supply control situation and issue early warning reminders is: obtain power consumption status parameter data by collecting electrical data; preprocess the power consumption status parameter data; analyze the preprocessed power consumption status parameter data to obtain a power consumption status evaluation index, and the power consumption status evaluation index is used to reflect the accuracy of the power consumption status; analyze the dual power supply control situation according to the power consumption status evaluation index and issue early warning reminders.

[0068] In this embodiment, the power state parameter data is preprocessed, including data cleaning, duplicate data removal, missing data processing and error data correction, data conversion, and data standardization to scale the data to a smaller range, such as between 0 and 1, to eliminate the influence of different dimensions. By preprocessing the power state parameter data, the accuracy of the power state parameter data is higher, which is conducive to obtaining a power state evaluation index with higher precision and accuracy, and is conducive to more accurate analysis of the dual power supply control situation based on a more accurate power state evaluation index.

[0069] Furthermore, the specific analysis process of analyzing the dual power supply regulation situation and issuing early warning reminders according to the power consumption status evaluation index is as follows: obtaining the power consumption status evaluation index, obtaining the power consumption status evaluation threshold, comparing the power consumption status evaluation index with the power consumption status evaluation threshold, when the power consumption status evaluation index is greater than the power consumption status evaluation threshold, it indicates that the power supply used is the second power supply; when the power consumption status evaluation index is not greater than the power consumption status evaluation threshold, it indicates that the power supply used is the first power supply; obtaining the actual power supply actually used at the time monitoring point corresponding to the power consumption status evaluation index, comparing the actual power supply with the power supply used obtained by the power consumption status evaluation index analysis, when the actual power supply is consistent with the power supply used, it indicates that the dual power supply regulation situation is normal; when the actual power supply is inconsistent with the power supply used, it indicates that the dual power supply regulation situation is abnormal, and an early warning reminder is issued.

[0070] In this embodiment, the power consumption status evaluation threshold is obtained, and the power consumption status evaluation threshold is The power consumption status evaluation index is compared with the power consumption status evaluation threshold. When the power consumption status evaluation index is greater than the power consumption status evaluation threshold, When , it indicates that the power source used is the second power source; when the power consumption status evaluation index is not greater than the power consumption status evaluation threshold, that is, , it indicates that the power source used is the first power source.

[0071] For example, when the actual power supply is the first power supply and the power supply used is the first power supply, it indicates that the dual power supply regulation is normal; when the actual power supply is the first power supply, but the power supply used is the second power supply, it indicates that the dual power supply regulation is abnormal, and an early warning reminder is issued.

[0072] By switching between the first power source and the second power source, the effect of saving energy is achieved. For example, the first power source is the mains power, and the second power source is the backup power source for photovoltaic power generation. Through the switching device, when the power of the solar cell group is less than 25% or a value set by the user, it can automatically switch to the mains power and ensure that the power is uninterrupted. The mains power is switched to photovoltaic power, which saves electricity bills for users. Users can use part of the mains power and part of the photovoltaic power.

[0073] Furthermore, the power consumption status evaluation index can be obtained through a variety of methods, including: analyzing the possibility and impact of system failures by constructing a fault tree to ensure that the second power supply can reliably take over when the first power supply fails; using the Markov chain model to describe the working status of different power supplies with state transition probability, and predicting the reliability of the system under various working conditions. The power consumption status evaluation index can be obtained by calculation. The specific method for obtaining the power consumption status evaluation index is: setting time monitoring points and numbering the time monitoring points; sampling data at the time monitoring points, obtaining the number of data samplings, and numbering the number of data samplings; obtaining power consumption status parameter data; constructing a calculation formula for the power consumption status evaluation index; the specific calculation formula for the power consumption status evaluation index is:

[0074]

[0075] In the formula, represents the power consumption status evaluation index at the s0th time monitoring point, s0=1,2,...,s, s represents the total number of time monitoring points, represents the second power supply monitoring voltage at the y0th data sampling at the s0th time monitoring point, y0=1,2,...,y, y represents the total number of data sampling times, represents the remaining power of the second power supply at the y0th data sampling at the s0th time monitoring point, represents the power switching voltage at the s0th time monitoring point, Indicates the power recovery voltage at the monitoring point at time s0, It represents the power switching power at the s0th time monitoring point, T1 represents the weight ratio of the power switching voltage in the power usage status assessment index, T2 represents the weight ratio of the power recovery voltage in the power usage status assessment index, and T3 represents the weight ratio of the power switching power in the power usage status assessment index.

[0076] In this embodiment, when the second power supply monitoring voltage, T1, T2 and T3 are constant, the second power supply remaining power is used as the independent variable, and the second power supply monitoring accuracy index is used as the dependent variable, the change trend of the second power supply monitoring accuracy index is increasing, which is specifically manifested as the greater the second power supply remaining power, the greater the second power supply monitoring accuracy index. Figure 2As shown, the curve diagram of the second power supply monitoring accuracy index provided by the embodiment of the present application, the curve T in the curve diagram is represented as when the second power supply monitoring voltage is 13V, T1 is 0.4, T2 is 0.4, and T3 is 0.2, with the second power supply remaining power as the independent variable, and the second power supply monitoring accuracy index as the dependent variable, the curve Y is when the second power supply monitoring voltage is 12.6V, T1 is 0.4, T2 is 0.4, and T3 is 0.2, with the second power supply remaining power as the independent variable, with the second power supply monitoring accuracy index as the dependent variable, and the curve U is represented as when the second power supply monitoring voltage is 12V, T1 is 0.4, T2 is 0.4, and T3 is 0.2, with the second power supply remaining power as the independent variable, with the second power supply monitoring accuracy index as the dependent variable. The value ranges of T1, T2 and T3 are all in (0, 1), and satisfy that the sum of T1, T2 and T3 is equal to 1. In the power system, the switching of the first power supply and the second power supply is usually to improve the reliability and stability of power supply. When the first power source fails or needs maintenance, the second power source can quickly take over the power supply task. In practical applications, it may be necessary to combine multiple methods through simulation, analysis and optimization to ensure that the power switching system can achieve the optimal or predetermined performance indicators in terms of power supply reliability, safety and economy.

[0077] The power recovery voltage refers to the voltage of the second power supply when the second power supply is restored, the power switching voltage refers to the voltage when the second power supply is switched, and the power switching capacity refers to the remaining capacity when the second power supply is switched. The power recovery voltage, power switching voltage and power switching capacity can be obtained by referring to the first power supply and the second power supply switching design document.

[0078] There is a certain correlation between the power recovery voltage, the power switching voltage and the power switching capacity. When the second power supply voltage reaches the power switching voltage and the remaining capacity of the second power supply reaches the power switching capacity, the second power supply is switched to the first power supply. When the second power supply voltage reaches the power recovery voltage and the remaining capacity of the second power supply exceeds the power switching capacity, the first power supply is switched to the second power supply.

[0079] The algorithm of this embodiment uses nonlinear transformation. In data analysis, nonlinear transformation can be used to reveal complex patterns and relationships in the data, help to better fit and classify the data, and help smooth the impact of outliers and reduce the distortion of the overall evaluation by extreme cases. Each correction factor can be adjusted according to actual conditions to adapt to different project characteristics and environmental variables. Multiple related but different measurement data are converted into a single progress index. This embodiment uses a quantitative method to evaluate and compare the power switching status at different time points or different projects.

[0080] This embodiment effectively reduces the disadvantage of a single factor and a single solution that cannot be globally controlled by comprehensively considering the power switching voltage, the power switching amount and the power recovery voltage, and takes the correlation of various key factors into consideration, so as to effectively and accurately determine the power switching status.

[0081] For example, when the power switching voltage, power switching power and power recovery voltage of the second power supply are 10.5V, 12.5V and 1kWh respectively, the power usage state parameter data of the second power supply at the second, third and fourth data sampling at the sixth time monitoring point, the power usage state parameter data statistics table is shown in Table 1:

[0082] Table 1 Statistics of power consumption status parameters

[0083]

[0084] As shown in Table 1, at different data sampling times, the obtained second power supply monitoring voltage and the second power supply remaining power vary. As the second power supply remaining power decreases, the second power supply monitoring voltage also decreases, indicating that there is a certain correlation between the second power supply monitoring voltage and the second power supply remaining power. The data corresponding to the second power supply monitoring voltage and the second power supply remaining power at different data sampling times are averaged and respectively substituted with the weight proportion of the power switching voltage, the weight proportion of the power recovery voltage and the weight proportion of the power switching power by specific values ​​into the power consumption status assessment index calculation formula for calculation, and the power consumption status assessment index is obtained. The data in the table are analyzed to obtain that the power consumption status assessment index of the second power supply at the 6th time monitoring point is 1.5, and the power consumption status assessment threshold is 1.3, 1.5>1.3, and the power consumption status assessment index is greater than the power consumption status assessment threshold, indicating that the used power supply is the second power supply, and the actual power supply is the second power supply. When the actual power supply is consistent with the used power supply, it indicates that the dual power supply regulation is normal.

[0085] like Figure 3As shown, it is a structural schematic diagram of a monitoring and control device of a dual power supply metering monitoring method based on a power line provided in an embodiment of the present application. A monitoring and control device of a dual power supply metering monitoring method based on a power line provided in an embodiment of the present application includes: a data acquisition device, an automatic identification battery switcher, a controller and an early warning device; the data acquisition device includes: an ammeter installed in the power line, used to obtain the first power supply monitoring current and the second power supply monitoring current; a voltmeter installed in the power line, used to obtain the first power supply monitoring voltage and the second power supply monitoring voltage; an electric energy data recorder installed in the power line, used to obtain the remaining power of the second power supply; a power analyzer installed in the power line, used to obtain the first power supply monitoring power; a timer installed in the power line, used to obtain the first power supply monitoring duration; an automatic identification battery switcher, used to regulate and switch the first power supply and the second power supply; the first power supply is the power grid; the second power supply is the backup power supply; the controller, used to obtain the data obtained by the data acquisition device and the automatic identification battery switcher status data, and output the early warning information after analysis and processing; the early warning device, used to issue the early warning information for early warning reminder.

[0086] In this embodiment, the data obtained by the data acquisition device specifically refers to electrical data, which includes first power monitoring parameter data, second power monitoring parameter data and power usage status parameter data, and the automatic identification of battery switch status data specifically refers to the automatic identification of the actual power actually used by the battery switch at the time monitoring point. The early warning device is used to issue early warning information for early warning reminders, and the early warning reminder specifically refers to issuing an early warning ringtone for reminders.

[0087] The automatic battery identification switch uses a dual-channel precision microprocessor to independently collect current and voltage data, upload them to the MCU for processing, and upload them to the local storage chip to ensure that data calculation will not lose high accuracy. At the same time, it is uploaded to the cloud for storage, with double protection.

[0088] The working principle of the automatic identification battery switch is as follows: when connecting 12V, 24V, or 48V batteries, the battery voltage is detected to control the relay working mode, which are low voltage switching and low voltage recovery switching respectively. The status is displayed on the LCD, mainly based on the inverted AC voltage, and the voltage is switched to protect the battery life.

[0089] When the automatic identification battery switch connects to the battery voltage of 12V, when the battery voltage is detected to be lower than 10.5V (the system default is 10.5V), it is a low voltage switching voltage, the relay is activated, and the grid power supply is switched, such as Figure 4 As shown, it is a display diagram of the automatic mode switching grid status provided by an embodiment of the present application, which shows the specific process of automatic mode switching grid power supply. The LCD right arrow is displayed, the LCD left arrow is turned off, and the battery icon is displayed flashing to switch. After switching, the grid power supply status is as follows Figure 5 As shown, it is a grid power supply status display diagram provided in an embodiment of the present application, which maintains the relay state and detects the battery voltage change action to the recovery point.

[0090] When the battery voltage is detected to rise to 12.5V (the system default is 12.5V), it is low voltage recovery voltage, the relay is activated, and the inverter power supply is switched, such as Figure 6 As shown, it is an automatic mode switching inverter state display diagram provided by the embodiment of the present application, which shows the specific process of automatic mode switching inverter power supply. The LCD right arrow displays off, the LCD left arrow displays, and the battery icon is turned off to switch. After switching, the inverter power supply state is as follows Figure 7 As shown, it is a display diagram of the inverter power supply status provided in an embodiment of the present application, which maintains the relay state and detects the voltage change action of the battery to the low voltage switching point.

[0091] When the automatic identification battery switch connects to a battery voltage of 24V or 48V, the specific switching process is the same as that of 12V.

[0092] When the voltage of the battery connected to the automatic identification battery switch is 24V, when the battery voltage is detected to be lower than 21V (the system default is 21V), it is a low voltage switching voltage, and the relay is activated: the LCD right arrow is displayed when the grid power supply is switched, the LCD left arrow is displayed off, and the battery icon is displayed after flashing, and the relay state is maintained to detect the battery to the recovery point voltage change action. When the battery voltage is detected to rise by 25V (the system default is 25V), it is a low voltage recovery voltage, and the relay is activated: the LCD right arrow is displayed off when the inverter power supply is switched off, the LCD left arrow is displayed, and the battery icon is displayed after the display action is turned off, and the relay state is maintained to detect the battery to the low voltage switching point voltage change action.

[0093] When the voltage of the battery connected to the automatic identification battery switch is 48V, the cut-off and recovery point voltage is detected when the battery voltage is lower than 42V (the system defaults to 42V when it leaves the factory), it is a low-voltage switching voltage, and the relay is activated: after switching the grid power supply LCD right arrow display, LCD left arrow display off, and the battery icon display flashes, the relay state is maintained to detect the battery to the recovery point voltage change action. When the battery voltage is detected to rise by 50V (the system defaults to 50V when it leaves the factory), it is a low-voltage recovery voltage, and the relay is activated: after switching the inverter power supply LCD right arrow display off, LCD left arrow display, and the battery icon off display action, the relay state is maintained to detect the battery to the low-voltage switching point voltage change action.

[0094] The technical scheme in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: relative to the distributed power supply access user bidirectional metering and monitoring system and method announced by the invention patent with announcement number: CN103983845B, the embodiment of the present application obtains the first power supply monitoring accuracy index by analyzing the first power supply monitoring parameter data, and obtains the data monitoring accuracy of the first power supply by analyzing the first power supply monitoring accuracy index, thereby accurately and efficiently clarifying the data monitoring status of the first power supply, and then realizing the monitoring adjustment according to the data monitoring status of the first power supply, thereby improving the accuracy of the first power supply monitoring data; relative to a monitoring circuit and monitoring method of a supercapacitor in an electric energy meter disclosed in the patent application with publication number: CN114924117A, the embodiment of the present application obtains the power consumption status evaluation index by analyzing the power consumption status parameter data, analyzes the dual power supply regulation status according to the power consumption status evaluation index and performs early warning reminders, thereby regulating the monitoring operation of the dual power supply metering, thereby realizing the fast and efficient switching of the first power supply and the second power supply according to the data obtained from the monitoring operation of the dual power supply metering, thereby improving the operation efficiency and safety of the power system.

[0095] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0096] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0097] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0098] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0099] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0100] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A dual power supply metering monitoring method based on power lines, characterized in that: The following steps are involved: Collect electrical data; Analyze the electrical data to obtain accurate data monitoring of the first power source; Analyze the electrical data to obtain the accurate data monitoring of the second power supply; Analyze electrical data to obtain dual power supply control status and issue early warning reminders; The specific analysis process of analyzing the electrical data to obtain the accurate data monitoring situation of the first power supply is: Obtaining first power supply monitoring parameter data by collecting electrical data; Normalizing the first power supply monitoring parameter data; Analyzing the normalized first power monitoring parameter data to obtain a first power monitoring accuracy index, where the first power monitoring accuracy index is used to evaluate the monitoring accuracy of the first power data; Analyze the first power supply monitoring accuracy index to obtain the first power supply data monitoring accuracy; The specific method for obtaining the first power supply monitoring accuracy index is: Set time monitoring points and number them; Perform data sampling at the time monitoring point, obtain the data sampling times, and number the data sampling times; Acquiring first power supply monitoring parameter data; Construct the calculation formula of the first power supply monitoring accuracy index; The specific calculation formula for the first power supply monitoring accuracy index is: In the formula, represents the first power supply monitoring accuracy index at the s0th time monitoring point, s0 = 1, 2, ..., s, s represents the total number of time monitoring points, represents the first power supply monitoring current at the y0th data sampling at the s0th time monitoring point, y0=1,2,...,y, y represents the total number of data sampling times, represents the standard current of the first power supply at the s0th time monitoring point, represents the first power supply monitoring voltage at the y0th data sampling at the s0th time monitoring point, represents the first power supply standard voltage at the s0th time monitoring point, represents the first power supply monitoring power at the y0th data sampling at the s0th time monitoring point, represents the standard power of the first power supply at the s0th time monitoring point, Indicates the first power supply monitoring duration at the y0th data sampling at the s0th time monitoring point, represents the standard duration of the first power supply monitoring at the s0th time monitoring point, A1 represents the weight ratio of the first power supply monitoring current in the first power supply monitoring accuracy index, A2 represents the weight ratio of the first power supply monitoring voltage in the first power supply monitoring accuracy index, A3 represents the weight ratio of the first power supply monitoring power in the first power supply monitoring accuracy index, and A4 represents the weight ratio of the first power supply monitoring duration in the first power supply monitoring accuracy index; The specific analysis process of analyzing the electrical data to obtain the accurate data monitoring of the second power supply is as follows: Obtaining second power supply monitoring parameter data by collecting electrical data; Performing data processing on the second power supply monitoring parameter data; Analyze the second power supply monitoring parameter data after data processing to obtain a second power supply monitoring accuracy index, where the second power supply monitoring accuracy index is used to reflect the monitoring accuracy of the second power supply data; Analyze the accuracy of data monitoring of the second power supply according to the second power supply monitoring accuracy index; The specific calculation formula for the second power supply monitoring accuracy index is: In the formula, It represents the second power supply monitoring accuracy index at the s0th time monitoring point, represents the second power supply monitoring current at the y0th data sampling at the s0th time monitoring point, represents the standard current of the second power supply at the s0th time monitoring point, represents the second power supply monitoring voltage at the y0th data sampling at the s0th time monitoring point, represents the standard voltage of the second power supply at the s0th time monitoring point, represents the remaining power of the second power supply at the y0th data sampling at the s0th time monitoring point, represents the actual remaining capacity of the second power supply at the s0th time monitoring point, R1 represents the weight ratio of the second power supply monitoring current in the second power supply monitoring accuracy index, R2 represents the weight ratio of the second power supply monitoring voltage in the second power supply monitoring accuracy index, and R3 represents the weight ratio of the remaining capacity of the second power supply in the second power supply monitoring accuracy index; The specific analysis process of analyzing the accuracy of data monitoring of the second power supply according to the second power supply monitoring accuracy index is as follows: Obtain a second power supply monitoring accuracy indicator, obtain a second power supply accuracy threshold, compare the second power supply monitoring accuracy indicator with the second power supply accuracy threshold, and when the second power supply monitoring accuracy indicator is less than the second power supply accuracy threshold, it indicates that the data monitoring of the second power supply is in an accurate state; When the second power supply monitoring accuracy index is not less than the second power supply accuracy threshold, it indicates that the data monitoring of the second power supply is inaccurate, and the data monitoring of the second power supply is adjusted; The specific analysis process of analyzing the electrical data to obtain the dual power supply control situation and issue early warning reminders is as follows: Obtain power consumption status parameter data by collecting electrical data; Preprocessing the power consumption status parameter data; Analyze the preprocessed power consumption status parameter data to obtain a power consumption status evaluation index, wherein the power consumption status evaluation index is used to reflect the accuracy of the power consumption status; Analyze the dual power supply control situation according to the power consumption status evaluation index and issue early warning reminders; The specific method for obtaining the power consumption status evaluation index is as follows: Set time monitoring points and number them; Perform data sampling at the time monitoring point, obtain the data sampling times, and number the data sampling times; Obtain power consumption status parameter data; Construct a calculation formula for the electricity consumption status evaluation index; The specific calculation formula for the power consumption status evaluation index is: In the formula, represents the power consumption status evaluation index at the s0th time monitoring point, s0 = 1, 2, ..., s, s represents the total number of time monitoring points, represents the second power supply monitoring voltage at the y0th data sampling at the s0th time monitoring point, y0=1, 2, ..., y, y represents the total number of data sampling times, represents the remaining power of the second power supply at the y0th data sampling at the s0th time monitoring point, represents the power switching voltage at the s0th time monitoring point, Indicates the power recovery voltage at the monitoring point at time s0, It represents the power switching power at the s0th time monitoring point, T1 represents the weight ratio of the power switching voltage in the power usage status assessment index, T2 represents the weight ratio of the power recovery voltage in the power usage status assessment index, and T3 represents the weight ratio of the power switching power in the power usage status assessment index.

2. A dual power supply metering and monitoring method based on power lines as claimed in claim 1, characterized in that: The specific analysis process of analyzing the first power supply monitoring accuracy index to obtain the first power supply data monitoring accuracy is as follows: Obtaining a first power supply monitoring accuracy indicator, obtaining a first power supply accuracy threshold, comparing the first power supply monitoring accuracy indicator with the first power supply accuracy threshold, and when the first power supply monitoring accuracy indicator is less than the first power supply accuracy threshold, indicating that data monitoring of the first power supply is in an accurate state; When the first power supply monitoring accuracy index is not less than the first power supply accuracy threshold, it indicates that the data monitoring of the first power supply is inaccurate, and the data monitoring of the first power supply is adjusted.

3. A dual power supply metering and monitoring method based on power lines as claimed in claim 1, characterized in that: The specific analysis process of analyzing the dual power supply control situation and providing early warning reminders according to the power consumption status evaluation index is as follows: Obtaining a power usage status evaluation index, obtaining a power usage status evaluation threshold, comparing the power usage status evaluation index with the power usage status evaluation threshold, and when the power usage status evaluation index is greater than the power usage status evaluation threshold, indicating that the power source used is the second power source; When the power consumption status evaluation index is not greater than the power consumption status evaluation threshold, it indicates that the power supply in use is the first power supply; the actual power supply actually used at the time monitoring point corresponding to the power consumption status evaluation index is obtained, and the actual power supply is compared with the power supply used obtained by analyzing the power consumption status evaluation index. When the actual power supply is consistent with the power supply in use, it indicates that the dual power supply regulation is normal; When the actual power supply is inconsistent with the used power supply, it indicates that the dual power supply regulation is abnormal and an early warning reminder is issued.

4. A monitoring and control device using the dual power supply metering monitoring method based on power lines as described in any one of claims 1 to 3, characterized in that: include: Data acquisition device, automatic identification battery switch, controller and early warning device; The data acquisition device comprises: An ammeter installed in the power line, used to obtain a first power supply monitoring current and a second power supply monitoring current; A voltmeter installed on the power line, used to obtain the first power supply monitoring voltage and the second power supply monitoring voltage; An electric energy data recorder installed on the power line to obtain the remaining power of the second power source; A power analyzer installed on the power line, used to obtain the first power supply monitoring power; A timer installed on the power line, used to obtain the first power supply monitoring time; The automatic identification battery switch is used to regulate and switch between the first power source and the second power source; The first power source is a power grid; The second power supply is a backup power supply; The controller is used to obtain data obtained by the data acquisition device and automatically identify the battery switch state data, and output warning information after analysis and processing; The early warning device is used to send out early warning information for early warning reminders.

Images