Three-phase electric energy meter communication performance detection and fault alarm method and system

Abstract

The invention discloses a three-phase electric energy meter communication performance detection and fault alarm method and system, and relates to the technical field of electric power information acquisition and monitoring, and the method comprises the steps: starting the carrier communication detection of a three-phase electric energy meter, providing two paths of power supplies for power supply, judging the communication integrity, recording the current communication state when the integrity is not in a specified range, and carrying out the fault alarm of the three-phase electric energy meter. Selecting an optimal channel, and detecting the communication integrity again; when the integrity of the second detection is not within a specified range, performing multi-dimensional signal analysis, establishing a time sequence model, and judging a communication abnormal state; according to the real-time and historical fault data, classified alarming of communication fault levels is carried out, fault removal processing is carried out, and resetting is carried out after fault removal is confirmed. According to the method, the fault removal time is shortened, the fault recurrence rate is reduced, the system stability score is improved, the maintenance cost is effectively reduced, and the obvious beneficial effects are shown in the aspects of quickly recovering normal operation of the electric energy meter, improving the long-term stability of the system and improving the economic benefit.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power information collection and monitoring, and in particular to a method and system for detecting communication performance and fault alarming of a three-phase electric energy meter. Background Art

[0002] In the field of energy meter communication technology, with the rapid development of smart grids, the carrier communication performance detection and fault alarm method of three-phase energy meters has become one of the key technologies for the stable operation of power systems. Traditional detection methods mainly rely on a single communication channel to evaluate the communication status through simple signal strength judgment and basic packet loss rate. However, these methods often show certain limitations in complex and changeable power environments. For example, when the environmental noise level increases or the signal propagation distance increases, the single communication channel is susceptible to interference, resulting in communication interruption and data transmission errors, thus affecting the accurate measurement and real-time monitoring of the energy meter.

[0003] The existing related technologies have obvious deficiencies in dealing with these problems. First, due to the lack of comprehensive evaluation of multi-channel communications, it is difficult for existing technologies to quickly switch to the optimal communication channel when the signal is attenuated or noise interferes, resulting in a long time for communication troubleshooting, affecting the normal operation of the electricity meter. Secondly, the existing fault alarm system can often only provide basic fault indications, lacks accurate classification of fault levels and real-time alarms, making it difficult for maintenance personnel to quickly locate problems and effectively deal with them. In addition, after troubleshooting, the existing technology lacks an effective reset and verification mechanism, resulting in a high fault recurrence rate and insufficient system stability. These problems not only increase maintenance costs, but also reduce the overall operating efficiency of the power system.

[0004] In view of the above problems, the present invention proposes a three-phase electric energy meter communication performance detection and fault alarm method, which can significantly improve the stability of the electric energy meter communication system and the efficiency of fault handling through real-time detection of communication integrity, multi-dimensional signal analysis and timing model establishment, as well as accurate classification and alarm of fault levels. Summary of the invention

[0005] In view of the above existing problems, the present invention aims to solve the problems of insufficient timeliness, accuracy and stability of communication performance detection and fault alarm of three-phase electric energy meters in complex environments in the prior art, as well as the problem of imperfect system reset and verification mechanism after fault elimination. The present invention achieves the technical effect of significantly improving the fault handling speed and system stability of the three-phase electric energy meter communication system through real-time detection, multi-dimensional signal analysis and fault level classification alarm, while reducing maintenance costs and ensuring the reliable operation of the power system.

[0006] In order to solve the above technical problems, a three-phase electric energy meter communication performance detection and fault alarm method is proposed, including:

[0007] Start the three-phase electric energy meter carrier communication detection, provide two power supplies at the same time, judge the communication integrity, when the integrity is not within the specified range, record the current communication status, evaluate the current communication channel, select the optimal channel, and test the communication integrity again; when the second detection integrity does not return to the specified range, cut off the connection between the current communication channel and other channels at the same time, conduct multi-dimensional signal analysis, establish a timing model, and judge the abnormal communication status; classify the communication fault level according to the real-time and historical fault data, perform troubleshooting, and reset after confirming that the fault has been eliminated.

[0008] As a preferred solution of the method for detecting communication performance and fault alarm of a three-phase electric energy meter according to the present invention, the communication integrity determination includes performing carrier communication detection of the three-phase electric energy meter, using two-way power supply, and determining the communication integrity Q;

[0009] When Q is less than 0.6 and Q is greater than 1, the current optimal channel is selected for preliminary adjustment and the integrity is tested again. When the communication integrity returns to the range of [0.6, 1] during the second test, the fault is corrected for the original communication line.

[0010] When the second detection integrity still does not meet the requirements, a fault alarm is issued for fault judgment, and the connection between the current communication channel and the remaining channels is cut off. The current communication channel retains the original power supply path A, and the remaining channels use another power supply path B.

[0011] As a preferred solution of the method for detecting communication performance and alarming faults of a three-phase electric energy meter described in the present invention, wherein: the optimal channel includes a strong communication signal, a weak signal delay, and complete data transmission;

[0012] According to the multi-channel communication protocol, the optimal communication channel is automatically selected with reference to the current network status and environmental interference of the three-phase electric energy meter, the status of each channel is evaluated, the comprehensive integrity of all channels is calculated, and the channel with the highest integrity is selected. At the same time, the stability index is used Where N is the number of all channels, i is the variable index, and when selecting a channel, the selected channel is argmax(Q i )+α·mQ i ) where α is the weight coefficient considering historical stability. When the current integrity of the selected channel differs from the historical stable state by more than 50%, the weight coefficient is adjusted based on the selected channel in the dynamic feedback adjustment after channel selection. When the integrity value of the selected channel drops below 0.6 during the communication process, the channel selection argmax(Q i ·m -1 ) channel.

[0013] As a preferred solution of the method for detecting communication performance and fault alarm of a three-phase electric energy meter described in the present invention, the timing model includes a timing model of multi-dimensional signal analysis to judge abnormal state and perform fault alarm after disconnection, and the timing model is:

[0014]

[0015] Among them, F(t) represents the comprehensive state value at time t, U(t) is the voltage value at time t, I(t) is the current value at time t, P(t) is the power value at time t, E(t) represents the environmental variables at time t including external influencing factors such as temperature and humidity, Y is the weight coefficient for measuring the influence of the interaction between voltage and current on the comprehensive state, δ is the weight coefficient for measuring the influence of environmental factors on the comprehensive state, and F his (t) is the average comprehensive state value of historical data, and ε is the weight coefficient measuring the contribution of historical state to the current state;

[0016] Define the state deviation D(t) as the basis for judging abnormality:

[0017] D(t)=|F(t)-F avg (t old )|

[0018] Where D(t) is the state deviation at time t, which represents the absolute difference between the current state and the historical average state; F avg (t old ) is the time in the past old The average value of F(t) at each time point.

[0019] As a preferred solution of the method for detecting communication performance and alarming faults of a three-phase electric energy meter according to the present invention, the method for determining the abnormal communication state includes setting an initial threshold value D for determining the abnormal communication state. base and dynamic threshold D dynamic (t):

[0020] When D(t)≤D base , it indicates normal status;

[0021] When D base <D(t)≤D dynamic (t), it indicates a warning state;

[0022] When D(t)>D dynamic (t), it indicates an alarm state.

[0023] As a preferred solution of the method for detecting communication performance and alarming faults of a three-phase electric energy meter described in the present invention, the classified alarm includes grading the alarms according to the real-time and historical fault data, and classifying the faults into the following levels:

[0024] When it is in normal state, there is no warning, no alarm, the green light is always on, and it is operating normally;

[0025] When in warning state, the first level warning indicates a minor fault, and a sound prompt or slowly flashing yellow and blue indicator lights indicate a minor problem and it is recommended to check;

[0026] Level 2 warning represents a moderate fault, i.e. D(t)≥1.5D dynamic (t), a continuous sound alarm is sounded, and the red and blue lights flash rapidly alternately, prompting maintenance personnel to check immediately without shutting down the machine;

[0027] Level 3 warning indicates a serious fault, i.e. D(t)≥2D dynamic (t), a high-intensity alarm is sounded, the system automatically shuts down, the red indicator light stays on, and a visual alarm is also present;

[0028] The system issues an alarm and records fault information for subsequent analysis;

[0029] The value of D(t) calculated in real time reflects whether the working status of the electric energy meter is normal. When the status continues to be abnormal, the fault level will increase as the degree of abnormality increases.

[0030] As a preferred solution of the method for detecting communication performance and alarming faults of a three-phase electric energy meter described in the present invention, the fault elimination process includes: performing alarm classification according to real-time and historical fault data, and performing fault elimination and resetting after the alarm;

[0031] After receiving the alarm, the maintenance personnel check the fault indicator light and alarm information, obtain the fault record through the system interface, analyze the fault type and cause, analyze the historical records of similar faults, and find out the fault mode;

[0032] In case of minor faults, check and adjust the parameters of the equipment and clean up possible pollutants and interference sources;

[0033] In case of moderate fault, thoroughly check the connection and internal components of the energy meter and replace or repair them;

[0034] In case of serious failure, ensure that the equipment is completely shut down, conduct a comprehensive inspection, and replace damaged components or interrupted lines;

[0035] During the troubleshooting process, the maintenance personnel verify that all fault indications have been removed. The system automatically resets after detecting that the main power supply has been restored. The system can continue to operate at the breakpoint, and the green indicator light flashes. After 2 hours of normal operation, the green light is always on. The system should record the reset time and the state changes before and after the reset. The 2 hours are the fault recovery time. If more than 2 hours have passed, the system cancels the reset and re-performs the troubleshooting.

[0036] After the troubleshooting process, perform a manual reset and eliminate all faults according to the fault information displayed on the touch screen. After pressing the reset button, the red light goes out and the yellow indicator light is always on. When the maintenance personnel clicks the end button and presses the start button, the green light is always on after 2 hours of normal operation.

[0037] Another object of the present invention is to provide a three-phase electric energy meter communication performance detection and fault alarm system. The present invention ensures the stability and reliability of communication between the electric energy meter and the upper system through automated detection, analysis and alarm mechanisms, and promptly detects and handles communication faults to ensure the normal operation of the power system. At the same time, the system improves the pertinence of fault handling through classified alarms, reduces manual inspections, improves operation and maintenance efficiency, and supports fault prevention and design improvements through data analysis. In addition, the system has self-recovery capabilities and can quickly reset and resume normal operation after troubleshooting, thereby minimizing downtime and enhancing the overall reliability of the system.

[0038] As a preferred solution of the three-phase electric energy meter communication performance detection and fault alarm system described in the present invention, it is characterized by comprising a detection module, an analysis module, and an alarm module;

[0039] The detection module includes a communication detection unit and a fault recording unit. After the system is started, the detection module is entered. The communication detection unit starts the three-phase electric energy meter carrier communication detection and provides two power supplies at the same time to judge the communication integrity. When the communication integrity is not within the specified range, the fault recording unit records the current communication status, notifies the analysis module and requests intervention;

[0040] The analysis module includes a signal analysis unit and a timing modeling unit. The analysis module receives information from the detection module. The signal analysis unit evaluates the current communication channel, selects the optimal channel, and detects the communication integrity again. If the requirements are still not met, a multi-dimensional signal analysis is performed. The timing modeling unit establishes a timing model, determines the abnormal communication state, and transmits the result to the alarm module.

[0041] The alarm module includes an alarm classification unit and a fault processing unit. The alarm module classifies the communication fault level according to the results of the analysis module, and the alarm classification unit classifies the communication fault level according to the real-time and historical fault data. The fault processing unit performs fault elimination and resets after confirming that the fault has been eliminated. After the reset is successful, the detection module is notified to restart the detection.

[0042] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and is characterized in that when the processor executes the computer program, the steps of the method for detecting communication performance and fault alarm of a three-phase electric energy meter are implemented.

[0043] A computer-readable storage medium stores a computer program thereon, characterized in that when the computer program is executed by a processor, the steps of the three-phase electric energy meter communication performance detection and fault alarm method are implemented.

[0044] Beneficial effects of the present invention: The present invention realizes real-time detection and optimization of the carrier communication of the electric energy meter. By providing two power supplies at the same time and judging the communication integrity, the continuity and reliability of the communication are ensured. At the same time, the optimal channel is evaluated and selected, and the communication efficiency and quality are improved. When the communication integrity is not within the specified range, the current state is recorded and the fault is corrected. Such a process not only ensures the communication quality, but also reduces the occurrence of faults.

[0045] By cutting off the connection between the current communication channel and other channels, conducting multi-dimensional signal analysis and establishing a timing model, accurate judgment of communication abnormalities and fault alarms can be achieved. This process improves the accuracy of fault diagnosis and enhances the system's early warning capabilities.

[0046] According to the real-time and historical fault data, the communication fault level is classified and alarmed, and the fault elimination process is carried out to ensure that the electric energy meter can quickly resume normal operation after the fault is solved. At the same time, the reset information is recorded to provide data support for subsequent fault analysis. The technology of the present invention not only shortens the troubleshooting time and reduces the fault recurrence rate by optimizing the communication channel selection and fault handling process, but also improves the system stability score, reduces the maintenance cost, and provides a strong guarantee for the stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0048] Figure 1 An overall flow chart of a three-phase electric energy meter communication performance detection and fault alarm method provided by an embodiment of the present invention.

[0049] Figure 2 A system solution module diagram of a three-phase electric energy meter communication performance detection and fault alarm system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0050] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0051] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0052] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0053] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0054] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] Example 1, reference Figure 1, which is the first embodiment of the present invention, provides a three-phase electric energy meter communication performance detection and fault alarm method, comprising:

[0057] S1: Start the three-phase energy meter carrier communication detection, provide two power supplies at the same time, judge the communication integrity, when the integrity is not within the specified range, record the current communication status, evaluate the current communication channel, select the optimal channel, and detect the communication integrity again.

[0058] Furthermore, the carrier communication detection of the three-phase energy meter is carried out, and two-way power supply is used to judge the integrity of the communication Q:

[0059]

[0060] Among them, S0 is the initial signal strength, h is the environmental noise level, λ S is the coefficient of noise attenuation on signal strength, λ d is the distance attenuation coefficient, d is the distance of signal propagation, C0 is the reference delay value, λ C is the delay impact factor, t avg is the average response time, C cu is the current delay, η is the packet loss impact coefficient, L lose is the number of lost packets, L total is the total number of data packets;

[0061] When Q is less than 0.6 and Q is greater than 1, the current optimal channel is selected for preliminary adjustment and the integrity is tested again. When the communication integrity returns to the range of [0.6, 1] during the second test, the fault is corrected for the original communication line.

[0062] When the second detection integrity still does not meet the requirements, a fault alarm is issued for fault judgment, and the connection between the current communication channel and the remaining channels is cut off. The current communication channel retains the original power supply path A, and the remaining channels use another power supply path B.

[0063] It should be noted that the communication signal is strong, the signal delay is weak, and the data transmission is complete;

[0064] According to the multi-channel communication protocol, the optimal communication channel is automatically selected with reference to the current network status and environmental interference of the three-phase electric energy meter, the status of each channel is evaluated, the comprehensive integrity of all channels is calculated, and the channel with the highest integrity is selected. At the same time, the stability index is used Where N is the number of all channels, i is the variable index, and when selecting a channel, the selected channel is argmax(Q i )+α·(mQ i) where α is the weight coefficient considering historical stability. When the current integrity of the selected channel differs from the historical stable state by more than 50%, the weight coefficient α is adjusted depending on the selected channel in the dynamic feedback adjustment after channel selection:

[0065] α new =α old +β·(Q selected -m)

[0066] Among them, β is the adjustment coefficient, Q selected is the optimal channel finally selected, α new is the adjusted weight coefficient, α old is the original weight coefficient;

[0067] When the integrity value of the selected channel drops below 0.6 during the communication process, the channel selection argmax(Q i ·m -1 ) channel.

[0068] S2: When the second detection completeness does not return to the specified range, the connection between the current communication channel and other channels is cut off at the same time, multi-dimensional signal analysis is performed, a timing model is established, and the abnormal communication status is determined.

[0069] Furthermore, after the connection is cut off, a time series model of multi-dimensional signal analysis is used to determine the abnormal state and issue a fault alarm. The time series model is:

[0070]

[0071] Among them, F(t) represents the comprehensive state value at time t, U(t) is the voltage value at time t, I(t) is the current value at time t, P(t) is the power value at time t, E(t) represents the environmental variables at time t including external influencing factors such as temperature and humidity, γ is the weight coefficient for measuring the influence of the interaction between voltage and current on the comprehensive state, δ is the weight coefficient for measuring the influence of environmental factors on the comprehensive state, and F his (t) is the average comprehensive state value of historical data, and ε is the weight coefficient measuring the contribution of historical state to the current state;

[0072] Define the state deviation D(t) as the basis for judging abnormality:

[0073] D(t)=|F(t)-F avg (t old )|

[0074] Where D(t) is the state deviation at time t, which represents the absolute difference between the current state and the historical average state; F avg (t old ) is the time in the pastold The average value of F(t) at each time point.

[0075] It should be noted that the initial threshold for determining the abnormal communication state is set as follows:

[0076] D base =μ+k1·σ 2

[0077] Where μ is the average value of D(t), σ 2 is the variance of D(t), k1 is the sensitivity coefficient;

[0078]

[0079] In, k2 is the feedback control coefficient, and T represents the impact of the provided time range;

[0080] When D(t)≤D base , it indicates normal status;

[0081] When D base <D(t)≤D dynamic (t), it indicates a warning state;

[0082] When D(t)>D dynamic (t), it indicates an alarm state.

[0083] S3: Classify and alarm the communication fault level according to the real-time and historical fault data, perform troubleshooting, and reset after confirming that the fault has been eliminated.

[0084] Furthermore, alarm classification is performed based on real-time and historical fault data, and faults are classified into the following levels:

[0085] When it is in normal state, there is no warning, no alarm, the green light is always on, and it is operating normally;

[0086] When in warning state, the first level warning indicates a minor fault, and a sound prompt or slowly flashing yellow and blue indicator lights indicate a minor problem and it is recommended to check;

[0087] Level 2 warning represents a moderate fault, i.e. D(t)≥1.5D dynamic (t), a continuous sound alarm is sounded, and the red and blue lights flash rapidly alternately, prompting maintenance personnel to check immediately without shutting down the machine;

[0088] Level 3 warning indicates a serious fault, i.e. D(t)≥2D dynamic (t), a high-intensity alarm is sounded, the system automatically shuts down, the red indicator light stays on, and a visual alarm is also present;

[0089] The system issues an alarm and records fault information for subsequent analysis;

[0090] The value of D(t) calculated in real time reflects whether the working status of the electric energy meter is normal. When the status continues to be abnormal, the fault level will increase as the degree of abnormality increases.

[0091] It should be noted that alarm classification is performed based on real-time and historical fault data, and fault elimination and resetting are performed after the alarm;

[0092] After receiving the alarm, the maintenance personnel check the fault indicator light and alarm information, obtain the fault record through the system interface, analyze the fault type and cause, analyze the historical records of similar faults, and find out the fault mode;

[0093] In case of minor faults, check and adjust the parameters of the equipment and clean up possible pollutants and interference sources;

[0094] In case of moderate fault, thoroughly check the connection and internal components of the energy meter and replace or repair them;

[0095] In case of serious failure, ensure that the equipment is completely shut down, conduct a comprehensive inspection, and replace damaged components or interrupted lines;

[0096] During the troubleshooting process, the maintenance personnel verify that all fault indications have been removed. The system automatically resets after detecting that the main power supply has been restored. The system can continue to operate at the breakpoint, and the green indicator light flashes. After 2 hours of normal operation, the green light is always on. The system should record the reset time and the state changes before and after the reset. The 2 hours are the fault recovery time. If more than 2 hours have passed, the system cancels the reset and re-performs the troubleshooting.

[0097] After the troubleshooting process, perform a manual reset and eliminate all faults according to the fault information displayed on the touch screen. After pressing the reset button, the red light goes out and the yellow indicator light is always on. When the maintenance personnel clicks the end button and presses the start button, the green light is always on after 2 hours of normal operation.

[0098] Specifically, under standard laboratory conditions, different degrees of communication interference are imposed on each group of electric energy meters to simulate different degrees of faults; the existing technologies A, B and the technology of the present invention are respectively used to troubleshoot the electric energy meters; the time required for each group of technologies to troubleshoot the faults is recorded; after troubleshooting, the system stability of each group of electric energy meters is scored, and the scoring criteria include communication interruption frequency, data transmission accuracy, etc.; the maintenance cost of each group of technical solutions during the troubleshooting process is calculated, including the cost of manpower, materials and equipment use; within a period of time after troubleshooting, the fault recurrence rate of each group of electric energy meters is monitored, and the comparison results are shown in Table 1.

[0099] Table 1

[0100]

[0101] The average troubleshooting time of the technology of the present invention is 2 hours, which is significantly shorter than 3.5 hours and 4.2 hours of the existing technologies A and B, indicating that the present invention can restore the normal operation of the electric energy meter more quickly and reduce downtime; the fault recurrence rate of the technology of the present invention is only 5%, indicating that the technology of the present invention not only has a fast repair speed, but also a more lasting and stable repair effect; the system stability score of the technology of the present invention reaches 90 points, which is much higher than the existing technologies A and B, and has a significant effect on improving the stability of the electric energy meter communication system; the maintenance cost of 500 yuan and 550 yuan is significantly reduced compared with the existing technologies A and B, which shows that the technology of the present invention has obvious advantages in reducing maintenance costs.

[0102] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

[0103] Embodiment 2, the second embodiment of the present invention, is different from the first two embodiments in that:

[0104] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, and other media that can store program codes.

[0105] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0106] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0107] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0108] Example 3, reference Figure 2 , which is the third embodiment of the present invention, and provides a three-phase electric energy meter communication performance detection and fault alarm system, including a detection module 10, an analysis module 20, and an alarm module 30;

[0109] The detection module 10 includes a communication detection unit 101 and a fault recording unit 102. After the system is started, the detection module 10 is entered. The communication detection unit 101 starts the three-phase electric energy meter carrier communication detection and provides two power supplies at the same time to judge the communication integrity. When the communication integrity is not within the specified range, the fault recording unit 102 records the current communication status, notifies the analysis module 20 and requests intervention;

[0110] The analysis module 20 includes a signal analysis unit 201 and a timing modeling unit 202. The analysis module 20 receives information from the detection module 10. The signal analysis unit 201 evaluates the current communication channel, selects the optimal channel, and detects the communication integrity again. If the requirements are still not met, a multi-dimensional signal analysis is performed. The timing modeling unit 202 establishes a timing model, determines the abnormal communication state, and transmits the result to the alarm module 30.

[0111] The alarm module 30 includes an alarm classification unit 301 and a fault processing unit 302. The alarm module 30 classifies the communication fault level according to the result of the analysis module 20. The alarm classification unit 301 classifies the communication fault level according to the real-time and historical fault data. The fault processing unit 302 performs troubleshooting and resets after confirming that the fault has been eliminated. After the reset is successful, the detection module 10 is notified to restart the detection.

[0112] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A three-phase electric energy meter communication performance detection and fault alarm method, characterized in that: include, Start the three-phase energy meter carrier communication detection, provide two power supplies at the same time, judge the communication integrity, and when the integrity is not within the specified range, record the current communication status, evaluate the current communication channel, select the optimal channel, and detect the communication integrity again; When the second detection completeness does not return to the specified range, the connection between the current communication channel and other channels is cut off at the same time, multi-dimensional signal analysis is performed, a timing model is established, and the abnormal communication state is determined; Classify and alarm the communication fault level according to real-time and historical fault data, perform troubleshooting, and reset after confirming that the fault has been eliminated.

2. A three-phase electric energy meter communication performance detection and fault alarm method as claimed in claim 1, characterized in that: The determination of communication integrity includes performing carrier communication detection of the three-phase electric energy meter, using two-way power supply, and determining the communication integrity Q; When Q is less than 0.6 and Q is greater than 1, the current optimal channel is selected for preliminary adjustment and the integrity is tested again. When the communication integrity returns to the range of [0.6, 1] during the second test, the fault is corrected for the original communication line. When the second detection integrity still does not meet the requirements, a fault alarm is issued for fault judgment, and the connection between the current communication channel and the remaining channels is cut off. The current communication channel retains the original power supply path A, and the remaining channels use another power supply path B.

3. A three-phase electric energy meter communication performance detection and fault alarm method as claimed in claim 2, characterized in that: The optimal channel includes strong communication signal, weak signal delay and complete data transmission; According to the multi-channel communication protocol, the optimal communication channel is automatically selected with reference to the current network status and environmental interference of the three-phase electric energy meter, the status of each channel is evaluated, the comprehensive integrity of all channels is calculated, and the channel with the highest integrity is selected. At the same time, the stability index is used Where N is the number of all channels, i is the variable index, and when selecting a channel, the selected channel is argmax(Q i )+α·mQ i ) where α is the weight coefficient considering historical stability. When the current integrity of the selected channel differs from the historical stable state by more than 50%, the weight coefficient is adjusted based on the selected channel in the dynamic feedback adjustment after channel selection. When the integrity value of the selected channel drops below 0.6 during the communication process, the channel selection argmax(Q i ·m -1 ) channel.

4. A three-phase electric energy meter communication performance detection and fault alarm method as claimed in claim 3, characterized in that: The timing model includes a timing model that uses multi-dimensional signal analysis to determine abnormal status and issue a fault alarm after the connection is cut off. The timing model is: Among them, F(t) represents the comprehensive state value at time t, U(t) is the voltage value at time t, I(t) is the current value at time t, P(t) is the power value at time t, E(t) represents the environmental variables at time t including external influencing factors such as temperature and humidity, γ is the weight coefficient for measuring the influence of the interaction between voltage and current on the comprehensive state, δ is the weight coefficient for measuring the influence of environmental factors on the comprehensive state, and F his (t) is the average comprehensive state value of historical data, and ε is the weight coefficient measuring the contribution of historical state to the current state; Define the state deviation D(t) as the basis for judging abnormality: D(t)=|F(t)-F avg (t old )| Where D(t) is the state deviation at time t, which represents the absolute difference between the current state and the historical average state; F avg (t old ) is the time in the past old The average value of F(t) at each time point.

5. A three-phase electric energy meter communication performance detection and fault alarm method as claimed in claim 4, characterized in that: The determining of the abnormal communication state includes setting an initial threshold D for determining the abnormal communication state. base and dynamic threshold D dynamic (t): When D(t)≤D base , it indicates normal status; When D base <D(t)≤D dynamic (t), it indicates a warning state; When D(t)>D dynamic (t), it indicates an alarm state.

6. A three-phase electric energy meter communication performance detection and fault alarm method as claimed in claim 5, characterized in that: The classification alarm includes alarm classification based on real-time and historical fault data, and classifying the faults into the following levels: When it is in normal state, there is no warning, no alarm, the green light is always on, and it is operating normally; When in warning state, the first level warning indicates a minor fault, and a sound prompt or slowly flashing yellow and blue indicator lights indicate a minor problem and it is recommended to check; Level 2 warning represents a moderate fault, i.e. D(t)≥1.5D dynamic (t), a continuous sound alarm is sounded, and the red and blue lights flash rapidly alternately, prompting maintenance personnel to check immediately without shutting down the machine; Level 3 warning indicates a serious fault, i.e. D(t)≥2D dynamic (t), a high-intensity alarm is sounded, the system automatically shuts down, the red indicator light stays on, and a visual alarm is also present; The system issues an alarm and records fault information for subsequent analysis; The value of D(t) calculated in real time reflects whether the working status of the electric energy meter is normal. When the status continues to be abnormal, the fault level will increase as the degree of abnormality increases.

7. A three-phase electric energy meter communication performance detection and fault alarm method as claimed in claim 6, characterized in that: The troubleshooting process includes alarm classification based on real-time and historical fault data, and troubleshooting and resetting after the alarm; After receiving the alarm, the maintenance personnel check the fault indicator light and alarm information, obtain the fault record through the system interface, analyze the fault type and cause, analyze the historical records of similar faults, and find out the fault mode; In case of minor faults, check and adjust the parameters of the equipment and clean up possible pollutants and interference sources; In case of moderate fault, thoroughly check the connection and internal components of the energy meter and replace or repair them; In case of serious failure, ensure that the equipment is completely shut down, conduct a comprehensive inspection, and replace damaged components or interrupted lines; During the troubleshooting process, the maintenance personnel verify that all fault indications have been removed. The system automatically resets after detecting that the main power supply has been restored. The system can continue to operate at the breakpoint, and the green indicator light flashes. After 2 hours of normal operation, the green light is always on. The system should record the reset time and the state changes before and after the reset. The 2 hours are the fault recovery time. If more than 2 hours have passed, the system cancels the reset and re-performs the troubleshooting. After the troubleshooting process, perform a manual reset and eliminate all faults according to the fault information displayed on the touch screen. After pressing the reset button, the red light goes out and the yellow indicator light is always on. When the maintenance personnel clicks the end button and presses the start button, the green light is always on after 2 hours of normal operation.

8. A system using a three-phase electric energy meter communication performance detection and fault alarm method as claimed in any one of claims 1 to 7, characterized in that: Including detection module, analysis module and alarm module; The detection module includes a communication detection unit and a fault recording unit. After the system is started, the detection module is entered. The communication detection unit starts the three-phase electric energy meter carrier communication detection and provides two power supplies at the same time to judge the communication integrity. When the communication integrity is not within the specified range, the fault recording unit records the current communication status, notifies the analysis module and requests intervention; The analysis module includes a signal analysis unit and a timing modeling unit. The analysis module receives information from the detection module. The signal analysis unit evaluates the current communication channel, selects the optimal channel, and detects the communication integrity again. If the requirements are still not met, a multi-dimensional signal analysis is performed. The timing modeling unit establishes a timing model, determines the abnormal communication state, and transmits the result to the alarm module. The alarm module includes an alarm classification unit and a fault processing unit. The alarm module classifies the communication fault level according to the results of the analysis module, and the alarm classification unit classifies the communication fault level according to the real-time and historical fault data. The fault processing unit performs fault elimination and resets after confirming that the fault has been eliminated. After the reset is successful, the detection module is notified to restart the detection.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of a three-phase electric energy meter communication performance detection and fault alarm method described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of a three-phase electric energy meter communication performance detection and fault alarm method described in any one of claims 1 to 7 are implemented.

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