CN-122017394-A - Topological relation identification method, device and system of electric energy meter

CN122017394ACN 122017394 ACN122017394 ACN 122017394ACN-122017394-A

Abstract

The application relates to the field of electric energy meters and provides a method, a device and a system for identifying topological relations 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 phases of a target guide rail meter according to the voltage values, collecting real-time power data of all the electric energy meters and total power data of all the phases of the target guide rail meter, calculating real-time power variation according to the real-time power data and calculating total power variation according to the total power data, comparing matching degrees between the real-time power variation and the total power variation when a single electric energy meter is connected or disconnected with the target guide rail meter, identifying topological relations between the electric energy meter and the corresponding phases of the target guide rail meter, overcoming the defect of single signal intensity identification, and achieving high identification accuracy.

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. 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; 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.
2. The method for identifying a topological relation of electric energy meters according to claim 1, wherein the collecting the voltage values of each electric energy meter in the candidate set of electric energy meters, and dividing the candidate set of electric energy meters into subsets corresponding to each phase of the target guide rail meter according to each voltage value comprises: Collecting voltage values of the electric energy meters in the electric energy meter candidate set; classifying the voltage values according to different split phases of the target guide rail table; And dividing the electric energy meter candidate set into subsets corresponding to each of the target guide rail tables according to the classification result.
3. The method for identifying a topological relation of electric energy meters according to claim 1, 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.
4. The method for identifying a topological relation of an electric energy meter according to claim 3, wherein the identifying the topological relation of the electric energy meter and the corresponding phase separation of the target guide rail meter by comparing the matching degree between the real-time power variation and the total power variation when a single electric energy meter is connected or disconnected with the target guide rail meter comprises: When a single electric energy meter is connected or disconnected with the target guide rail meter, calculating the matching degree between the real-time power variation of the electric energy meter and the total power variation of the corresponding split phases of the target guide rail meter; If the matching degree is within a preset error threshold range, determining that a topological relation exists between the electric energy meter and the corresponding split phase of the target guide rail meter; and if the matching degree is not within the preset error threshold range, determining that the electric energy meter and the target guide rail meter are in corresponding split phase and have no topological relation.
5. The method for identifying a topological relation of an electric energy meter according to claim 4, wherein if the matching degree is not within the preset error threshold, determining that the electric energy meter and the target guide rail meter are in no topological relation, further comprises: Accumulating the length of the preset time and judging whether the accumulated result reaches the preset time length; if yes, continuing to poll and identify the next electric energy meter until all the electric energy meters in the subsets are polled.
6. The method for identifying a topological relation of an electric energy meter according to claim 1, wherein the method for identifying a 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 of the electric energy meter and the total power variation of the corresponding split phase of the target guide rail meter when a single electric energy meter is connected or disconnected with the target guide rail meter further comprises: when the first electric energy meters to be identified exist in the subset, the power consumption of each first electric energy meter to be identified in the same subset and the total power of corresponding split phases of the target guide rail meter are respectively obtained; Combining the first electric energy meters to be identified in the same subset, traversing each combination, and respectively calculating the total power consumption of each combination; calculating the correlation between the total electric quantity of the corresponding split phases of the target guide rail table and the total electric quantity of each combination; And identifying a target combination with a topological relation with the corresponding split phase of the target guide rail table according to the correlation, wherein the first electric energy meter to be identified in the target combination is an electric energy meter with the topological relation with the corresponding split phase of the target guide rail table.
7. The method for identifying a topological relation of an electric energy meter according to claim 6, further comprising, after identifying a target combination having a topological relation with a corresponding split phase of the target guideway table according to the correlation degree: when the subset has the second electric energy meter to be identified, collecting the voltage value of the second electric energy meter to be identified; classifying the voltage value of the second electric energy meter to be identified; And determining the topological relation of the corresponding split phases of the second electric energy meter to be identified and the target guide rail meter according to the clustering result.
8. The method for identifying a topological relation of electric energy meters according to claim 7, wherein when the subset has the second electric energy meter to be identified, collecting the voltage value of the second electric energy meter to be identified comprises: When the subset has a second electric energy meter to be identified, establishing communication between the target guide rail meter and an 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 second electric energy meter to be identified.
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 collecting real-time power data of the electric energy meters in the subsets and total power data of all the split phases of the target guide rail meter, calculating real-time power variation of the electric energy meters according to the real-time power data and calculating total power variation of all the split phases of the target guide rail meter according to the total power data; 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 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.
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; 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; The topological relation of the electric energy meter and the corresponding split phase of the target guide rail meter is identified 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, the defect of single signal intensity identification can be effectively overcome, and the identification precision is high. 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 collecting real-time power data of the electric energy meters in the subsets and total power data of all the split phases of the target guide rail meter, calculating real-time power variation of the electric energy meters according to the real-time power data and calculating total power variation of all the split phases of the target guide rail meter according to the total power data; The identification module is used for identifying the topological