A Method to Solve the Islanding Problem of Low-Voltage Power Carrier Communication

Abstract

The invention relates to a method for solving a low-voltage power line carrier communication island problem. A relay device monitors a carrier channel in real time, when the channel is idle, the relay device sends a broadcast command to electric meters near the relay device, addresses of the electric meters are recognized, and the electric meters around the relay device are classified; when the channel is busy, a concentrator reads the electric meters, the relay device monitors uplink and downlink messages of the concentrator, the uplink and downlink messages are analyzed, the relay device records communication conditions of the electric meters by the aid of communication counters of the electric meters, so that whether the electric meters are in a communication island or not is judged by the aid of the communication counters, and if the electric meters are in the communication island, the relay device is enabled. According to the method for solving the low-voltage power line carrier communication island problem, the carrier channel detection capacity is provided, communication collisions can be avoided, and the meter reading success rate is increased.

Description

technical field [0001] The invention relates to a method for low-voltage power carrier communication, in particular to a method for solving the island problem of low-voltage power carrier communication, which belongs to the field of power grid communication. Background technique [0002] In recent years, the State Grid Corporation of China has proposed the practical construction of the telecommunication collection system, and put forward the construction goal of 100% success rate of data collection for the centralized meter reading system. However, in the vast rural areas, many substations have complex power supply relationships, long power supply line distances, insufficient carrier communication distances, limited communication capabilities, and frequent occurrence of communication islands. Therefore, it is difficult to complete the construction goal of 100% data collection success rate. [0003] According to the applicant's understanding, the current solution to the probl...

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Problems solved by technology

[0004] 1. The unit price of the carrier concentrator is expensive, and the additional installation investment cost is high, which is not conducive to promotion;

[0005] 2. It is necessary to reconfigure the meter file and carry out overall system debugging, which increases the workload of on-site construction;

[0006] 3. There are two concentrators in one station area, which puts forward new requirements for the electricity consumption information collection system platform, and the project involves too many aspects, which is not conducive to progress;

[0007] 4. There are two concentrators in one station area, which puts forward higher requirements for the daily work of asset management and equipment maintenance of the power supply company, which brings trouble to the staff;

[0008] 5. Two concentrators are installed in the same substation, the collision probability of carrier communication is greatly increased, which is not conducive to the improvement of the success rate of meter reading

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