Metering loop tandem connection analysis method and system, terminal and storage medium

Abstract

The invention relates to a metering loop tandem connection analysis method and system, a terminal and a storage medium, and relates to the technical field of electric energy metering of an electric power system, and the method comprises the steps: collecting a tandem connection analysis trigger signal of a metering loop; a preset intelligent acquisition terminal responds to the tandem connection analysis trigger signal to detect the metering loop so as to generate loop circuit parameters; the loop current parameters comprise current parameters of all phases, power parameters of all phases, phase parameters of all phases and total power parameters; analyzing the loop circuit parameters according to a preset tandem connection analysis algorithm to generate a loop tandem connection analysis result; searching a corresponding series connection alarm signal in a preset result alarm library according to the loop series connection analysis result; and giving an alarm prompt according to the loop tandem connection analysis result and the tandem connection alarm signal. The method has the effect of improving the tandem connection analysis efficiency and real-time performance of the metering loop.

Description

Technical Field

[0001] This application relates to the technical field of power system energy metering, and in particular to a method, system, terminal and storage medium for analyzing series wiring of metering circuits. Background Technology

[0002] The metering circuit is a core component of the electricity metering system. It refers to the entire secondary circuit path from the high-voltage or high-current primary system, through the conversion of current transformers, the transmission of signals through connecting wires, and finally to the electricity meter for metering.

[0003] In related technologies, in practical applications, due to reasons such as non-standard construction, misoperation, or intentional human error, the secondary circuits of current transformers are often connected in series in metering circuits. These series connection methods can cause serious metering deviations, lead to metering disputes, and even cause potential safety hazards to the operation of the power system. At present, series connection problems can only be detected through manual periodic verification.

[0004] Regarding the aforementioned technologies, relying on manual periodic verification to detect series wiring in metering circuits is not only inefficient but also difficult to monitor in real time, resulting in poor efficiency and real-time performance in analyzing series wiring in metering circuits, leaving room for improvement. Summary of the Invention

[0005] To improve the efficiency and real-time performance of series wiring analysis for metering circuits, this application provides a method, system, terminal, and storage medium for analyzing series wiring of metering circuits.

[0006] Firstly, this application provides a method for analyzing series wiring of metering circuits, employing the following technical solution: A method for analyzing series wiring of metering circuits, comprising: Analyze the trigger signals of the series connection of the metering circuit; The preset intelligent acquisition terminal responds to the series connection analysis trigger signal to detect the metering circuit and generate circuit parameters; the circuit current parameters include phase current parameters, phase power parameters, phase phase parameters and total power parameters. The circuit parameters of the loop are analyzed according to the preset series connection analysis algorithm to generate the circuit series connection analysis results. Based on the analysis results of the circuit series wiring, the corresponding series alarm signal is found in the preset result alarm library; An alarm will be triggered based on the analysis results of the circuit series wiring and the series alarm signal.

[0007] Optionally, the steps of analyzing the loop circuit parameters according to a preset series connection analysis algorithm to generate loop series connection analysis results include: The current amplitude of each phase current parameter is compared to generate the first series connection result; Phase analysis is performed on the phase parameters of each phase to generate the second series connection result; Power analysis is performed on the power parameters of each phase and the total power parameters to generate the third series connection result; Associate the first cascaded wiring result, the second cascaded wiring result, and the third cascaded wiring result to generate the basic cascaded wiring result; The basic series wiring results, loop circuit parameters, and preset typical series wiring patterns are analyzed to generate loop series wiring analysis results.

[0008] Optionally, the step of comparing the current amplitudes of each phase current parameter to generate the first series connection result includes: Determine the first comparison node current and the second comparison node current based on the current parameters of each phase. Calculate the ratio of the current at the first comparison node to the current at the second comparison node to generate the current amplitude ratio; Calculate the difference between the current amplitude ratio and the preset standard amplitude ratio to generate the current amplitude difference rate; Determine whether the current amplitude difference rate is within the preset amplitude standard range; If so, the preset non-sequential wiring result is defined as the first sequential wiring result; If not, the preset serial connection result is defined as the first serial connection result.

[0009] Optionally, the step of performing phase analysis on the phase parameters of each phase to generate the second series connection result includes: Determine the phase of the current in each phase and the corresponding phase of the voltage in each phase based on the phase parameters of each phase. Calculate the phase difference between each pair of phases of the current in each phase to generate the current phase difference; Calculate the difference between the phase of the current in each phase and the phase of the corresponding voltage in each phase to generate the current-voltage phase difference; When both the current phase difference and the current-voltage phase difference are within the preset standard phase difference range, the preset no-series wiring result is defined as the second series wiring result. When at least one of the current phase difference and the current-voltage phase difference is not within the preset standard phase difference range, the preset series connection result is defined as the second series connection result.

[0010] Optionally, the steps of performing power analysis on the power parameters of each phase and the total power parameters to generate the third series connection result include: Calculate the sum of the power parameters for each phase to generate the total power for each phase; Calculate the difference between the total power of each phase and the total power parameter to generate the power deviation value; Determine whether the power deviation value exceeds the preset standard power deviation range; If not, the preset no-series wiring result is defined as the third series wiring result; If so, the preset serial connection result is defined as the third serial connection result.

[0011] Optionally, the steps for analyzing the basic series wiring results, loop circuit parameters, and preset typical series wiring patterns to generate loop series wiring analysis results include: Determine whether the basic series wiring result is the preset series wiring result or the preset non-series wiring result; If the result is a non-series wiring result, the basic series wiring result will be defined as the loop series wiring analysis result. If the result is a series connection, the loop circuit parameters and typical series connection patterns are matched to generate the loop series connection analysis result.

[0012] Optionally, the steps for matching loop circuit parameters and typical series wiring patterns to generate loop series wiring analysis results include: Feature extraction is performed on the loop circuit parameters to generate a loop circuit feature vector; The real-time matching mode and the corresponding matching mode feature vector are determined based on typical series connection patterns. Calculate the similarity between the loop circuit feature vector and the matching pattern feature vector to generate the pattern matching degree; The pattern matching degree and real-time matching mode are sorted to determine the best matching mode, and the best matching mode is defined as the loop series wiring analysis result.

[0013] Secondly, this application provides a metering loop series wiring analysis system, which adopts the following technical solution: A metering loop series wiring analysis system, comprising: The acquisition module is used to acquire and analyze the trigger signals of the serial connection. A memory for storing a program for a metering loop series wiring analysis method as described in any of the above items; The processor and the program in the memory can be loaded and executed by the processor to implement a metering circuit series wiring analysis method as described in any of the above.

[0014] Thirdly, this application provides a smart terminal, which adopts the following technical solution: A smart terminal includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as described in any of the preceding claims, a method for analyzing the series connection of metering loops.

[0015] Fourthly, this application provides a computer storage medium capable of storing corresponding programs, which facilitates the improvement of the efficiency and real-time performance of series wiring analysis of metering circuits, and adopts the following technical solution: A computer-readable storage medium storing a computer program that can be loaded by a processor and executed as described in any of the preceding claims, a method for analyzing the series connection of metering loops.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. By using an intelligent data acquisition terminal to detect the metering circuit, the circuit parameters of the circuit are obtained. Then, the circuit parameters of the circuit are analyzed according to the series connection analysis algorithm to obtain the series connection analysis results. Thus, when a series connection occurs, the metering circuit can be detected immediately without the need for regular manual verification, thereby improving the efficiency and real-time performance of the series connection analysis of the metering circuit. 2. By analyzing the current parameters, phase parameters, power parameters and total power parameters of each phase, the first series connection result, the second series connection result and the third series connection result are obtained. This allows for analysis of whether there is a series connection in the metering circuit from multiple dimensions, thereby improving the accuracy of the series connection analysis of the metering circuit. 3. By extracting features from the loop circuit parameters, a loop circuit feature vector is generated. Then, the similarity between the loop circuit feature vector and the matching pattern feature vector is calculated to obtain the pattern matching degree. Finally, the real-time matching mode corresponding to the maximum pattern matching degree is selected as the best matching mode, and the best matching mode is defined as the loop series connection analysis result, thereby improving the accuracy of the loop series connection analysis result. Attached Figure Description

[0017] Figure 1 This is a flowchart of a metering circuit series wiring analysis method in an embodiment of this application.

[0018] Figure 2 This is a flowchart of the steps in this application embodiment to analyze the circuit parameters of the loop according to a preset series connection analysis algorithm to generate the circuit series connection analysis result.

[0019] Figure 3 This is a flowchart of the steps in this application embodiment to compare the current amplitude of each phase current parameter in order to generate the first series connection result.

[0020] Figure 4 This is a flowchart of the steps in this application embodiment to perform phase analysis on the phase parameters of each phase to generate a second series connection result.

[0021] Figure 5This is a flowchart of the steps in this application embodiment to perform power analysis on the power parameters of each phase and the total power parameters to generate a third series connection result.

[0022] Figure 6 This is a flowchart illustrating the steps in this application embodiment to analyze the basic series wiring results, loop circuit parameters, and preset typical series wiring patterns to generate loop series wiring analysis results.

[0023] Figure 7 This is a flowchart of the steps in this application embodiment to match loop circuit parameters and typical series wiring patterns to generate loop series wiring analysis results. Detailed Implementation

[0024] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figures 1 to 7 The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the application.

[0025] Reference Figure 1 This application discloses a method for analyzing series wiring of metering circuits, including the following steps: Step S100: Collect and analyze the trigger signal of the series connection of the metering circuit.

[0026] Among them, the series connection analysis trigger signal is a signal for detecting and analyzing whether the metering circuit has a series connection. It is stored in the processing terminal by the operator, updated every 100 milliseconds and sent to the intelligent acquisition terminal, so that the intelligent acquisition terminal can continuously detect the series connection status of the metering circuit in real time.

[0027] Step S101: The preset intelligent acquisition terminal responds to the serial wiring analysis trigger signal to detect the metering circuit and generate circuit parameters.

[0028] Upon receiving the series connection analysis trigger signal, the intelligent acquisition terminal responds to the signal to detect the metering circuit and obtain the circuit parameters, providing data support for subsequent analysis of the metering circuit parameters to obtain the series connection results.

[0029] The intelligent data acquisition terminal is a terminal that detects the series connection status of metering circuits. It includes a housing made of electromagnetic interference-resistant material; a core control module located inside the housing, comprising a microprocessor and memory (e.g., an STM32F4 series microprocessor with 256MB of memory for running series connection analysis algorithms and storing historical data); a high-precision metering module electrically connected to the core control module, used to acquire parameters such as current, phase, and power of the metering circuit; a multi-node current acquisition unit using six high-precision current sensors to acquire current signals from key nodes such as the secondary output of the current transformer, the input of the metering module, and the output of the metering module; a phase detection unit using a high-precision phase-locked loop circuit to accurately measure the phase relationship between current and voltage; a circuit parameter comparison unit to compare the differences in current parameters at each node; a communication module electrically connected to the core control module for communication with the power system master station; an alarm module electrically connected to the core control module to issue an alarm signal when a series connection is detected; and a power supply module to provide operating power to all modules.

[0030] The circuit parameters refer to the current parameters of key nodes in the metering circuit, including the current parameters of each phase, the power parameters of each phase, the phase parameters of each phase, and the total power parameters. These parameters are detected by the high-precision metering module in the intelligent acquisition terminal and sent to the core control module. By detecting the circuit parameters and analyzing their characteristics, the module can reflect whether there are any series connections in the metering circuit.

[0031] Step S102: Analyze the circuit parameters of the loop according to the preset series connection analysis algorithm to generate the circuit series connection analysis results.

[0032] After receiving the loop circuit parameters, the core control module invokes the series connection analysis algorithm to analyze and calculate the loop circuit parameters. This determines whether a series connection exists in the metering loop, and if so, the specific type of series connection in the metering loop, generating a loop series connection analysis result. The specific method is described in [reference needed]. Figure 2 The steps.

[0033] The circuit series connection analysis result refers to the analysis result of the series connection situation of the metering circuit, including no series connection and series connection. The types of series connection include phase sequence series connection, current transformer series connection, two current transformers with the same name terminals in series, two current transformers with different name terminals in series, three current transformers in series, etc. It is obtained by the core control module to analyze and calculate the circuit parameters of the circuit according to the series connection analysis algorithm. For the specific method, refer to Figure 2 The steps.

[0034] Step S103: Based on the analysis results of the circuit series connection, find the corresponding series alarm signal in the preset result alarm database.

[0035] The result alarm database refers to the correspondence between different serial connection analysis results and alarm signals. For example, if there is no serial connection, the alarm signal is green. If there is a serial connection but the severity is minor, the alarm signal is yellow, and a text prompt message assists in the alarm. If the severity is severe, the alarm signal is red, and a text prompt message assists in the alarm. Operators define the severity of different serial connection types and form a mapping table that maps different serial connection analysis results to alarm signals.

[0036] A series alarm signal is a signal that triggers an alarm for the series connection of a metering circuit. It is obtained by the processing terminal from the result alarm database based on the analysis results of the series connection of the circuit.

[0037] Step S104: Issue an alarm prompt based on the circuit series wiring analysis results and the series alarm signal.

[0038] After the core control module determines the series alarm signal, it sends the series alarm signal and the circuit series wiring analysis results to the alarm module, thereby promptly alerting the operators in the form of sound, light and text. When a series wiring situation occurs, maintenance can be carried out immediately, thereby improving the efficiency and timeliness of metering circuit series wiring analysis.

[0039] Reference Figure 2 The steps for analyzing loop circuit parameters based on a preset series connection analysis algorithm to generate loop series connection analysis results include: Step S200: Compare the current amplitude of each phase current parameter to generate the first series connection result.

[0040] The first series connection result refers to the detection result of whether a series connection has occurred in the metering circuit, determined from the perspective of comparing the current amplitude of each node. This result is obtained by the processing terminal after comparing the current amplitude of each phase current parameter. The specific method is described in [reference needed]. Figure 3 The steps involve determining the first series connection result, thereby including the series connection type that causes abnormal current amplitude within the scope of analysis, ensuring the accuracy of the series connection analysis.

[0041] Step S201: Perform phase analysis on the phase parameters of each phase to generate the second series connection result.

[0042] The second series connection result refers to the detection result of whether a series connection has occurred in the metering circuit from the perspective of the phase difference between current and voltage. It is obtained by the processing terminal after performing phase difference analysis on the phase parameters of each phase. The specific method is as follows: Figure 4The steps involve determining the second series connection result, thereby including the series connection type that causes phase anomalies within the scope of analysis and ensuring the accuracy of the series connection analysis.

[0043] Step S202: Perform power analysis on the power parameters of each phase and the total power parameters to generate the third series connection result.

[0044] The third series connection result refers to the detection result of whether series connection has occurred in the metering circuit from the perspective of the power difference between each phase. It is obtained by the processing terminal after analyzing the difference between the power parameters of each phase and the total power parameter. The specific method is as follows: Figure 5 The steps involve determining the third series connection result, thereby including the series connection type that causes power imbalance within the scope of analysis and ensuring the accuracy of the series connection analysis.

[0045] Step S203: Associate the first serial wiring result, the second serial wiring result, and the third serial wiring result to generate the basic serial wiring result.

[0046] The basic series connection result refers to the detection result of whether there is a series connection in the metering circuit, including whether there is a series connection or not. It is obtained by the processing terminal after analyzing the first series connection result, the second series connection result, and the third series connection result. If all three results are that there is no series connection, the result of no series connection is defined as the basic series connection result. If any one of the three results is that there is a series connection, the result of having a series connection is defined as the basic series connection result. By analyzing whether there is a series connection in the metering circuit through three dimensions, the accuracy of the analysis of series connection in the metering circuit is improved.

[0047] Step S204: Analyze the basic series wiring results, loop circuit parameters, and preset typical series wiring patterns to generate loop series wiring analysis results.

[0048] Among them, the typical series connection mode refers to the correspondence between different series connection modes and mode feature vectors. The operator connects the test measurement circuit in series according to the type of series connection, thereby analyzing the differences in current, voltage, phase and power under this type of series connection. The above parameters are then arranged in order to form a mode feature vector of fixed length. The operator then forms a mapping table by matching the series connection type with the mode feature vector one by one.

[0049] The circuit series wiring analysis results in this step are consistent with those in step S102. These results are obtained by the processing terminal after analyzing the basic series wiring results, circuit parameters, and typical series wiring patterns. For specific methods, please refer to [link / reference needed]. Figure 6 The steps.

[0050] Reference Figure 3 The steps for comparing the current amplitudes of each phase current parameter to generate the first series connection result include: Step S300: Determine the first comparison node current and the second comparison node current based on the current parameters of each phase.

[0051] The first comparison node current refers to the current value of the first node for current amplitude comparison, and the second comparison node current refers to the current value of the second node for current auxiliary comparison. The processing terminal obtains the current values ​​of each phase in each phase current parameter by arranging and combining them in pairs, thereby ensuring that the current differences of all nodes can be analyzed, and thus ensuring the accuracy of the metering circuit series wiring analysis.

[0052] Step S301: Calculate the ratio of the current at the first comparison node to the current at the second comparison node to generate the current amplitude ratio.

[0053] The current amplitude ratio refers to the difference in current values ​​between different nodes. It is obtained by the processing terminal by calculating the ratio of the current of the first comparison node to the current of the second comparison node. The current amplitude ratio should be kept around 1. If the ratio is much higher than 1 or much lower than 1, it indicates that the difference in current between the nodes is large.

[0054] Step S302: Calculate the difference between the current amplitude ratio and the preset standard amplitude ratio to generate the current amplitude difference rate.

[0055] The standard amplitude ratio refers to the ratio of the current amplitudes at each node when there is no series connection, which is 1. This value is stored in the processing terminal by the operator.

[0056] The current amplitude difference rate refers to the difference between the node current value difference and the standard difference, reflecting the degree of difference in node current. The larger the current amplitude difference rate, the greater the degree of difference in node current. It is obtained by the processing terminal calculating the difference between the current amplitude ratio and the standard amplitude ratio.

[0057] Step S303: Determine whether the current amplitude difference rate is within the preset amplitude standard range.

[0058] The amplitude standard range refers to the range of difference between the node current difference and the standard difference when there is no series connection in the metering circuit. In this embodiment, -5% to 5% is used as an example.

[0059] By processing the terminal to determine whether the current amplitude difference rate is within the amplitude standard range, it is possible to determine whether the current difference between each node in the metering circuit is large, and thus determine whether there is a series connection in the metering circuit.

[0060] Step S3031: If yes, then the preset non-serialized wiring result is defined as the first serialized wiring result.

[0061] If the processing terminal determines that the current amplitude difference rate is within the amplitude standard range, it indicates that the current difference between each node in the metering circuit is small. From the perspective of comparing the current amplitude, it can be determined that there is no series connection in the metering circuit. Therefore, the result of no series connection is defined as the first series connection result.

[0062] No-series-connection result refers to the test result where there is no series-connection in the metering circuit, and it is stored in the processing terminal by the operator.

[0063] Step S3032: If not, then define the preset serial connection result as the first serial connection result.

[0064] If the processing terminal determines that the current amplitude difference rate is not within the amplitude standard range, it indicates that the current difference between each node in the metering circuit is large, and it is determined that there is a series connection in the metering circuit. Therefore, the result of having a series connection is defined as the first series connection result.

[0065] The presence of series wiring results refers to the detection results indicating the existence of series wiring in the metering circuit, which are stored in the processing terminal by the operator.

[0066] Reference Figure 4 The steps for performing phase analysis on the phase parameters of each phase to generate the second series connection result include: Step S400: Determine the phase of each phase current and the corresponding phase of each phase voltage based on the phase parameters of each phase.

[0067] Among them, the phase of each phase current refers to the phase of each phase current, and the phase of each phase voltage refers to the phase of the voltage that is in phase with the current. The phase of each phase current is obtained by the processing terminal from the phase parameters of each phase. By determining the phase of each phase current and the corresponding phase of each phase voltage, data support is provided for subsequent analysis of the phase difference between in-phase and out-of-phase phases.

[0068] Step S401: Calculate the difference between each pair of phases of the current in each phase to generate the current phase difference.

[0069] Among them, the current phase difference refers to the phase difference between the current phases of different phases. It is obtained by the processing terminal calculating the difference between each pair of current phases of each phase, thus providing data support for subsequent analysis of the phase difference between different phases.

[0070] Step S402: Calculate the difference between the phase of each phase current and the corresponding phase of each phase voltage to generate the current-voltage phase difference.

[0071] Among them, the current-voltage phase difference refers to the phase difference between the phases of the in-phase current and voltage. It is obtained by the processing terminal by calculating the difference between the phase of each phase current and the corresponding phase of each phase voltage, thus providing data support for subsequent analysis of the phase difference of in-phase current.

[0072] Step S4021: When both the current phase difference and the current-voltage phase difference are within the preset standard phase difference range, the preset non-sequential wiring result is defined as the second sequential wiring result.

[0073] When both the current phase difference and the current-voltage phase difference are within the standard phase difference range, it indicates that there is no series connection in the metering circuit. Therefore, the result of no series connection is defined as the second series connection result.

[0074] The standard phase difference range refers to the standard phase difference range when there is no series connection in the metering circuit. The specific value is determined by the operator based on the specific type of metering circuit.

[0075] The result of the non-sequential wiring in this step is consistent with the result of the non-sequential wiring in step S3031, and will not be repeated here.

[0076] Step S4022: When at least one of the current phase difference and the current-voltage phase difference is not within the preset standard phase difference range, the preset series connection result is defined as the second series connection result.

[0077] If either or both of the current phase difference and the current-voltage phase difference are not within the standard phase difference range, it indicates that there is a series connection in the metering circuit, resulting in a large phase difference. Therefore, the result with series connection is defined as the second series connection result.

[0078] The standard phase difference range in this step is the same as the standard phase difference range in step S4021, and will not be repeated here.

[0079] The results of the series wiring in this step are consistent with those in step S3032, and will not be repeated here.

[0080] Reference Figure 5 The steps for performing power analysis on the power parameters of each phase and the total power parameters to generate the third series connection result include: Step S500: Calculate the sum of the power parameters of each phase to generate the total power of each phase.

[0081] The total power of each phase refers to the total power value of the key nodes in the metering circuit. It is obtained by the sum of the power parameters of each phase calculated by the processing terminal, reflecting the actual power consumption status of each phase and providing data support for subsequent analysis of the power balance of the metering circuit.

[0082] Step S501: Calculate the difference between the total power of each phase and the total power parameter to generate the power deviation value.

[0083] The power deviation value refers to the deviation between the sum of the power of each phase and the total power. It is obtained by the processing terminal calculating the difference between the total power of each phase and the total power parameter. In a normal metering circuit, based on Kirchhoff's laws, the sum of the power of each phase should equal the total power. If a series connection occurs, it may cause the current of a certain phase to be not detected by the metering module of that phase, but to be detected by the total power detection module of the metering circuit, thus causing a power imbalance; or, the series connection may cause the metering module to distort the detection of branch power, resulting in a power imbalance; or, the series connection may introduce additional power into a branch, resulting in a power imbalance. Therefore, by calculating the power deviation value, data support is provided for subsequent analysis of whether a series connection exists from the perspective of power balance.

[0084] Step S502: Determine whether the power deviation value exceeds the preset standard power deviation range.

[0085] The standard power deviation range refers to the deviation range between the sum of the branch power and the total power when there is no series connection. It is obtained by the operator measuring the power of the normal metering circuit and then calculating the difference.

[0086] By processing the terminal to determine whether the power deviation value exceeds the standard power deviation range, it is possible to determine whether there is a power imbalance in the metering circuit, and further determine whether there is a series connection in the metering circuit.

[0087] Step S5021: If not, then define the preset non-serialized wiring result as the third serialized wiring result.

[0088] If the processing terminal determines that the power deviation value does not exceed the standard power deviation range, it indicates that the power of the metering circuit is balanced and there is no series connection in the metering circuit. Therefore, the result of no series connection is defined as the third series connection result.

[0089] The result of the non-sequential wiring in this step is consistent with the result of the non-sequential wiring in step S3031, and will not be repeated here.

[0090] Step S5022: If so, the preset serial connection result is defined as the third serial connection result.

[0091] If the processing terminal determines that the power deviation value exceeds the standard power deviation range, it indicates that there is a power imbalance problem in the metering circuit and that a series connection has occurred in the metering circuit. Therefore, the result of a series connection is defined as the third series connection result.

[0092] The results of the series wiring in this step are consistent with those in step S3032, and will not be repeated here.

[0093] Reference Figure 6The steps for generating loop series wiring analysis results include analyzing the basic series wiring results, loop circuit parameters, and preset typical series wiring patterns: Step S600: Determine whether the basic series wiring result is the preset series wiring result or the preset non-series wiring result.

[0094] Among them, the results of connected wiring refer to the test results of the metering circuit where connected wiring already exists, and the results of unconnected wiring refer to the test results of the metering circuit where no connected wiring exists. These results are obtained by the operator and stored in the processing terminal.

[0095] By processing the terminal to determine whether the basic series wiring result is a series wiring result or a non-series wiring result, it can be determined whether further analysis of the series wiring type of the metering circuit is needed.

[0096] Step S601: If the result is a non-series wiring result, then define the basic series wiring result as the loop series wiring analysis result.

[0097] If the processing terminal determines that the basic series wiring result is a non-series wiring result, it indicates that there is no series wiring in the metering circuit. Therefore, it is not necessary to analyze the series wiring type of the metering circuit, and the basic series wiring result is defined as the circuit series wiring analysis result.

[0098] Step S602: If the result is a series connection, then match the loop circuit parameters and typical series connection modes to generate the loop series connection analysis result.

[0099] If the processing terminal determines that the basic series wiring result is a series wiring result, it indicates that there is a series wiring in the metering circuit. Therefore, it is necessary to analyze the type of series wiring in the metering circuit, and then match the circuit parameters and typical series wiring patterns to obtain the circuit series wiring analysis result. The specific method is as follows: Figure 7 The steps.

[0100] Reference Figure 7 The steps for matching loop circuit parameters and typical series wiring patterns to generate loop series wiring analysis results include: Step S700: Extract features from the loop circuit parameters to generate a loop circuit feature vector.

[0101] The loop circuit feature vector refers to the vector that reflects the electrical characteristics of the metering loop. The processing terminal preprocesses the current, voltage, phase, and power parameters in the loop circuit to reduce data noise and ensure data accuracy. Then, it calculates the difference value of the data itself and finally arranges the difference values ​​in order to form a feature vector of fixed length, which is the loop circuit feature vector. By determining the loop circuit feature vector, the electrical characteristics of the metering loop are clarified, providing data support for the subsequent matching of the series wiring mode of the metering loop.

[0102] Step S701: Determine the real-time matching mode and the corresponding matching mode feature vector based on the typical series wiring pattern.

[0103] Among them, the real-time matching mode refers to the series wiring type that matches the metering circuit, and the matching mode feature vector refers to the electrical feature vector of the metering circuit under the real-time matching mode, which is obtained by the processing terminal from typical series wiring modes one by one.

[0104] Step S702: Calculate the similarity between the loop circuit feature vector and the matching pattern feature vector to generate the pattern matching degree.

[0105] The pattern matching degree refers to the similarity between the electrical feature vector of the current metering circuit and the electrical feature vector of the real-time matching mode. The processing terminal calculates the similarity between the corresponding parameters of the two vectors through Euclidean distance, and then performs a weighted summation of the similarity of all parameters to obtain the pattern matching degree. The higher the pattern matching degree, the more similar the electrical features of the current metering circuit are to the electrical features of the real-time matching mode, and the more consistent the types of series wiring.

[0106] Step S703: Sort the pattern matching degree and real-time matching mode to determine the best matching mode, and define the best matching mode as the loop series wiring analysis result.

[0107] After determining the pattern matching degree, the pattern matching degree and the corresponding real-time matching mode are sorted from largest to smallest, and the real-time matching mode corresponding to the largest pattern matching degree is selected as the best matching mode. The best matching mode is defined as the loop series wiring analysis result.

[0108] The best matching mode refers to the mode with the highest similarity to the current metering circuit series wiring type among the real-time matching modes. The processing terminal sorts the mode matching degree and the corresponding real-time matching modes from large to small, and selects the real-time matching mode with the largest mode matching degree as the best matching mode.

[0109] Based on the same inventive concept, embodiments of this application provide a metering loop series wiring analysis system, including: The acquisition module is used to acquire and analyze the trigger signals of the serial connection. A memory used to store a program for analyzing a series connection method of a metering circuit; The processor can load and execute programs in memory to implement a method for analyzing the series connection of metering circuits.

[0110] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0111] This application provides a computer-readable storage medium storing a computer program that can be loaded by a processor and executed to perform a method for analyzing the series connection of metering loops.

[0112] Computer storage media include, for example, USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media that can store program code.

[0113] Based on the same inventive concept, this application provides a smart terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded and executed by the processor to perform a metering loop series wiring analysis method.

[0114] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0115] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only one example of a series of equivalent or similar features.

Claims

1. A method for analyzing series wiring of metering circuits, characterized in that, include: Analyze the trigger signals of the series connection of the metering circuit; The preset intelligent acquisition terminal responds to the series connection analysis trigger signal to detect the metering circuit and generate circuit parameters; the circuit current parameters include phase current parameters, phase power parameters, phase phase parameters and total power parameters. The circuit parameters of the loop are analyzed according to the preset series connection analysis algorithm to generate the circuit series connection analysis results. Based on the analysis results of the circuit series wiring, the corresponding series alarm signal is found in the preset result alarm library; An alarm will be triggered based on the analysis results of the circuit series wiring and the series alarm signal.

2. The method for analyzing series wiring of a metering circuit according to claim 1, characterized in that, The steps for analyzing loop circuit parameters according to a preset series connection analysis algorithm to generate loop series connection analysis results include: The current amplitude of each phase current parameter is compared to generate the first series connection result; Phase analysis is performed on the phase parameters of each phase to generate the second series connection result; Power analysis is performed on the power parameters of each phase and the total power parameters to generate the third series connection result; Associate the first cascaded wiring result, the second cascaded wiring result, and the third cascaded wiring result to generate the basic cascaded wiring result; The basic series wiring results, loop circuit parameters, and preset typical series wiring patterns are analyzed to generate loop series wiring analysis results.

3. The method for analyzing series wiring of a metering circuit according to claim 2, characterized in that, The steps for comparing the current amplitudes of each phase current parameter to generate the first series connection result include: Determine the first comparison node current and the second comparison node current based on the current parameters of each phase. Calculate the ratio of the current at the first comparison node to the current at the second comparison node to generate the current amplitude ratio; Calculate the difference between the current amplitude ratio and the preset standard amplitude ratio to generate the current amplitude difference rate; Determine whether the current amplitude difference rate is within the preset amplitude standard range; If so, the preset non-sequential wiring result is defined as the first sequential wiring result; If not, the preset serial connection result is defined as the first serial connection result.

4. The method for analyzing series wiring of a metering circuit according to claim 2, characterized in that, The steps for performing phase analysis on the phase parameters of each phase to generate the second series connection result include: Determine the phase of the current in each phase and the corresponding phase of the voltage in each phase based on the phase parameters of each phase. Calculate the phase difference between each pair of phases of the current in each phase to generate the current phase difference; Calculate the difference between the phase of the current in each phase and the phase of the corresponding voltage in each phase to generate the current-voltage phase difference; When both the current phase difference and the current-voltage phase difference are within the preset standard phase difference range, the preset no-series wiring result is defined as the second series wiring result. When at least one of the current phase difference and the current-voltage phase difference is not within the preset standard phase difference range, the preset series connection result is defined as the second series connection result.

5. The method for analyzing series wiring of a metering circuit according to claim 2, characterized in that, The steps for performing power analysis on the power parameters of each phase and the total power parameters to generate the third series connection result include: Calculate the sum of the power parameters for each phase to generate the total power for each phase; Calculate the difference between the total power of each phase and the total power parameter to generate the power deviation value; Determine whether the power deviation value exceeds the preset standard power deviation range; If not, the preset no-series wiring result is defined as the third series wiring result; If so, the preset serial connection result is defined as the third serial connection result.

6. The method for analyzing series wiring of a metering circuit according to claim 2, characterized in that, The steps for generating loop series wiring analysis results include analyzing the basic series wiring results, loop circuit parameters, and preset typical series wiring patterns: Determine whether the basic series wiring result is the preset series wiring result or the preset non-series wiring result; If the result is a non-series wiring result, the basic series wiring result will be defined as the loop series wiring analysis result. If the result is a series connection, the loop circuit parameters and typical series connection patterns are matched to generate the loop series connection analysis result.

7. The method for analyzing series wiring of a metering circuit according to claim 6, characterized in that, The steps for matching loop circuit parameters and typical series wiring patterns to generate loop series wiring analysis results include: Feature extraction is performed on the loop circuit parameters to generate a loop circuit feature vector; The real-time matching mode and the corresponding matching mode feature vector are determined based on typical series connection patterns. Calculate the similarity between the loop circuit feature vector and the matching pattern feature vector to generate the pattern matching degree; The pattern matching degree and real-time matching mode are sorted to determine the best matching mode, and the best matching mode is defined as the loop series wiring analysis result.

8. A metering loop series wiring analysis system, characterized in that, include: The acquisition module is used to acquire and analyze the trigger signals of the serial connection. A memory for storing a program for analyzing a metering circuit series connection method as described in any one of claims 1 to 7; The processor and the program in the memory can be loaded and executed by the processor to implement the metering circuit series wiring analysis method as described in any one of claims 1 to 7.

9. A smart terminal, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as described in any one of claims 1 to 7, for analyzing a metering loop series connection.

10. A computer-readable storage medium, characterized in that, The computer program is stored and can be loaded by a processor and executed as described in any one of claims 1 to 7, which is a method for analyzing the series connection of metering loops.

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