CN-122017395-A - Topological relation identification method, device and system of electric energy meter

Abstract

The application relates to the technical field of electric energy meters and provides a method, a device and a system for identifying topological relation of an electric energy meter, wherein the method comprises the steps of obtaining communication signal intensities of a plurality of electric energy meters scanned by a target guide rail meter, and determining an electric energy meter candidate set of the topological relation to be identified according to the communication signal intensities; the method comprises the steps of collecting voltage values of electric energy meters in an electric energy meter candidate set, dividing the electric energy meter candidate set into subsets corresponding to all phase splitting of a target guide rail meter according to the voltage values, respectively combining the electric energy meters in all the subsets to obtain total power consumption of all the combinations and total power consumption of corresponding phase splitting of the target guide rail meter, calculating correlation between the total power consumption of corresponding phase splitting of the target guide rail meter and the total power consumption of all the combinations, and identifying topological relation between the electric energy meter and the corresponding phase splitting of the target guide rail meter according to the correlation, so that defects of single signal intensity identification can be overcome, and identification accuracy is high.

Inventors

• CHEN DINGPING

Assignees

• 芯海科技（深圳）股份有限公司

Dates

Publication Date

20260512

Application Date

20260105

Claims (10)

1. 1. The method for identifying the topological relation of the electric energy meter is characterized by comprising the following steps of: Acquiring communication signal intensities of a plurality of electric energy meters scanned by a target guide rail meter, and determining an electric energy meter candidate set of a topological relation to be identified according to the communication signal intensities; collecting voltage values of the electric energy meters in the electric energy meter candidate set, and dividing the electric energy meter candidate set into subsets corresponding to the target guide rail meters according to the voltage values; Respectively combining the electric energy meters in the subsets to obtain the total power consumption of each combination and the total power consumption of corresponding split phases of the target meter guide rail meter, and calculating the correlation between the total power consumption of corresponding split phases of the target meter guide rail meter and the total power consumption of each combination; And identifying the topological relation of the electric energy meter and the corresponding split phase of the target guide rail meter according to the correlation degree.
2. 2. The method for identifying a topological relation of electric energy meters according to claim 1, wherein the steps of respectively combining the electric energy meters in the subsets to obtain the total power consumption of each combination and the total power of the corresponding split phases of the guide rail meter of the target meter include: respectively acquiring the electricity consumption sequence of each electric energy meter in each subset and the total electricity consumption sequence of the corresponding split phases of the target guide rail meter in a preset period; Combining the power meters within each of the subsets; and for each combination, calculating a total power consumption sequence of the combination according to the power consumption sequence of the electric energy meter in the combination, wherein the total power consumption sequence is a point-to-point addition result of the power consumption sequence of the electric energy meter in the combination.
3. 3. The method for identifying a topological relation of an electric energy meter according to claim 2, wherein the calculating a correlation between the total power of the corresponding split phases of the target guide rail meter and the total power consumption of each of the combinations comprises: Calculating a pearson correlation coefficient between the total electric quantity sequence of the corresponding split phases of the target guide rail table and the total electric quantity sequence of each combination; the calculation formula of the pearson correlation coefficient is as follows: wherein the said For the total electric quantity sequence of the target guide rail table i in the preset period, the following steps are adopted And for the total power consumption sequence of the combination j in the preset period, cov is covariance, and D is variance.
4. 4. The method for identifying a topological relation of an electric energy meter according to claim 3, wherein the step of identifying the topological relation of the electric energy meter and the target guide rail meter according to the correlation degree comprises the following steps: Comparing each of the pearson correlation coefficients; And selecting the combination corresponding to the maximum pearson correlation coefficient as a target combination of the topological relation corresponding to the target guide rail meter, wherein the electric energy meter in the target combination is an electric energy meter with the topological relation corresponding to the target guide rail meter.
5. 5. The method for identifying a topological relation of electric energy meters according to claim 1, wherein before combining the electric energy meters in the subsets respectively to obtain total power consumption of each combination and total power consumption of corresponding split phases of the target meter guide rail table, and calculating correlation between the total power consumption of corresponding split phases of the target meter guide rail table and the total power consumption of each combination, the method further comprises: Collecting real-time power data of each electric energy meter in each subset and total power data of each phase of the target guide rail table, calculating real-time power variation of each electric energy meter according to the real-time power data, and calculating total power variation of each phase of the target guide rail table according to the total power data; And identifying the topological relation of the electric energy meter and the corresponding split phase of the target guide rail meter by comparing the matching degree between the real-time power variation and the total power variation when the single electric energy meter is connected or disconnected with the target guide rail meter.
6. 6. The method for identifying a topological relation of electric energy meters according to claim 5, wherein the collecting real-time power data of each electric energy meter in each subset and total power data of each phase of the target guide rail meter, calculating real-time power variation of each electric energy meter according to the real-time power data and calculating total power variation of each phase of the target guide rail meter according to the total power data comprises: respectively acquiring real-time power data of each electric energy meter in each subset and total power data of each split phase of the target guide rail meter at preset intervals; and respectively calculating the real-time power variation of each electric energy meter and the total power variation of each split phase of the target guide rail meter based on a differential algorithm.
7. 7. The method for identifying a topological relation of an electric energy meter according to claim 1, wherein after identifying the topological relation of the electric energy meter and the target guide rail meter according to the correlation, the method further comprises: When the subset has the electric energy meter to be identified, collecting the voltage value of the electric energy meter to be identified; Classifying the voltage value of the electric energy meter to be identified; and determining the topological relation of the electric energy meter to be identified and the corresponding split phase of the target guide rail meter according to the clustering result.
8. 8. The method for identifying a topological relation of electric energy meters according to claim 7, wherein when the subset exists electric energy meters to be identified, acquiring the voltage value of the electric energy meters to be identified comprises: When the subset has the electric energy meter to be identified, establishing communication between the target guide rail meter and the adjacent guide rail meter; Acquiring a voltage value and a power value of the adjacent guide rail table, and calculating a current value of the adjacent guide rail table according to the voltage value and the power value; Acquiring a current value of the target guide rail table, and calculating a current difference value between the target guide rail table and the adjacent guide rail table; And when the current difference exceeds a preset threshold, collecting the voltage value of the electric energy meter to be identified.
9. 9. A topology identification device of an electric energy meter, comprising: The acquisition module is used for acquiring the communication signal intensity of the plurality of electric energy meters scanned by the target guide rail meter and determining an electric energy meter candidate set of the topological relation to be identified according to the communication signal intensity; The classification module is used for collecting voltage values of the electric energy meters in the electric energy meter candidate sets and classifying the electric energy meter candidate sets into subsets corresponding to the target guide rail meters according to the voltage values; the calculation module is used for respectively combining the electric energy meters in the subsets, obtaining the total power consumption of each combination and the total power consumption of corresponding split phases of the target meter guide rail meter, and calculating the correlation between the total power consumption of corresponding split phases of the target meter guide rail meter and the total power consumption of each combination; and the identification module is used for identifying the topological relation between the electric energy meter and the corresponding split phase of the target guide rail meter according to the correlation degree.
10. 10. A topology identification system of an electric energy meter, comprising the topology identification device of an electric energy meter according to claim 9.

Description

Topological relation identification method, device and system of electric energy meter Technical Field The application relates to the technical field of electric energy meters, in particular to a method, a device and a system for identifying topological relations of an electric energy meter. Background In a power distribution room, there may be a plurality of power distribution boxes, each of which is provided with a track meter for reading data of the back-end electric energy meter for management and monitoring. The guide rail meter has the main functions of 1) carrying out centralized reading on the electric energy meter data connected with the rear end, uploading the data to the cloud end uniformly, improving the reading efficiency, 2) monitoring the electricity consumption condition, analyzing the self electric energy metering data and the electric energy meter metering data connected with the rear end, and determining whether abnormality exists. If abnormal conditions (such as electric leakage and electricity theft) are found, a fault can be reported, and whether the brake is pulled and the power is off is determined according to the conditions. In a traditional distribution box, a guide rail meter and a rear-end electric energy meter are connected through an RS485 bus, so that reading is realized. At present, in order to reduce the wiring difficulty of the RS485 bus, the reading of the rear-end electric energy meter is realized in a Bluetooth wireless mode. However, when a plurality of distribution boxes are adjacently installed, due to propagation characteristics of bluetooth signals, signal strength (RSSI) of the bluetooth signals is attenuated along with the increase of distance, whether the electric energy meter and the guide rail meter are in the same distribution box cannot be well distinguished through the bluetooth signal strength, so that error conditions of topology relation identification are easily caused, and power load monitoring is failed. Disclosure of Invention In view of the above problems, embodiments of the present application provide a method, an apparatus, and a system for identifying a topological relation of an electric energy meter, so as to solve the above technical problems. In a first aspect, an embodiment of the present application provides a method for identifying a topological relation of an electric energy meter, including: Acquiring communication signal intensities of a plurality of electric energy meters scanned by a target guide rail meter, and determining an electric energy meter candidate set of a topological relation to be identified according to the communication signal intensities; collecting voltage values of the electric energy meters in the electric energy meter candidate set, and dividing the electric energy meter candidate set into subsets corresponding to the target guide rail meters according to the voltage values; Respectively combining the electric energy meters in the subsets to obtain the total power consumption of each combination and the total power consumption of corresponding split phases of the target meter guide rail meter, and calculating the correlation between the total power consumption of corresponding split phases of the target meter guide rail meter and the total power consumption of each combination; And identifying the topological relation of the electric energy meter and the corresponding split phase of the target guide rail meter according to the correlation degree. In a second aspect, an embodiment of the present application further provides a device for identifying a topological relation of an electric energy meter, including: The acquisition module is used for acquiring the communication signal intensity of the plurality of electric energy meters scanned by the target guide rail meter and determining an electric energy meter candidate set of the topological relation to be identified according to the communication signal intensity; The classification module is used for collecting voltage values of the electric energy meters in the electric energy meter candidate sets and classifying the electric energy meter candidate sets into subsets corresponding to the target guide rail meters according to the voltage values; the calculation module is used for respectively combining the electric energy meters in the subsets, obtaining the total power consumption of each combination and the total power consumption of corresponding split phases of the target meter guide rail meter, and calculating the correlation between the total power consumption of corresponding split phases of the target meter guide rail meter and the total power consumption of each combination; and the identification module is used for identifying the topological relation between the electric energy meter and the corresponding split phase of the target guide rail meter according to the correlation degree. In a third aspect, an embodiment of the present application further pro