A multi-local area network fusion method for low-voltage power line communication based on network scale

Abstract

The invention discloses a multi-local area network fusion method for low-voltage power line communication based on network scale, comprising the following steps: S1: each gateway determines the number of online nodes and offline nodes in each local area network; Send a beacon frame; S3: If a node in a local area network receives a beacon frame sent by a node in another local area network, according to the respective beacon frame, determine the network size of the local area network where they are located; S4: For the network size The network of the small local area network is disbanded; S5: the nodes in the disbanded local area network are added to the local area network with a large network scale; S6: Steps S1 to S5 are repeated until all the local area networks are merged into a single larger network scale. local area network. The invention can quickly and autonomously integrate the local area network with smaller scale in the area, and realize the rapid networking of the network in the area.

Description

technical field [0001] The invention relates to the field of distribution network communication, and more particularly, to a multi-local area network fusion method for low-voltage power line communication based on network scale. Background technique [0002] With the shortage of fossil energy and the increasing pressure on environmental protection, renewable energy will become the main source of energy supply for human beings. However, the volatility of renewable energy (wind power, photovoltaic power generation, etc.), the imbalance between energy harvesting and energy consumption, and the regional imbalance seriously restrict the large-scale use of renewable energy. [0003] In order to solve the many problems caused by the large-scale integration of renewable energy into the traditional power grid, people have proposed related concepts such as microgrid, smart grid, and energy Internet. As a future energy supply platform, the Electricity and Energy Internet (hereinafter ...

AI Technical Summary

Problems solved by technology

However, when the number of nodes is relatively large, or the distance between nodes is relatively long, or the channel environment suddenly deteriorates, there are many problems in using the current existing technology.

In the case of uneven distribution of nodes in different regions, using the method proposed in the existing documents for network fusion will lead to a long time for the disbandment of large-scale LANs, making the time required for final network fusion (that is, networking) If it is too large, it will seriously affect the networking efficiency of the entire area

[0007] However, at this stage, domestic and foreign researches are mostly on the ad hoc network method of a single network in a specific area, and there are relatively few studies on the mutual integration method between multiple networks in different areas. The essential reason is the mutual integration mechanism of multiple networks. It is more complex, and the fusion technology that has been proposed at this stage still has the following problems:

At this stage, the method of converging multiple master nodes into a single master node has fewer considerations (that is, restrictive conditions), which leads to longer convergence time of the master node and lower network fusion efficiency, which is not conducive to the master node's ability to control all the network in the entire region. Node management and maintenance

[0010] 3. At the present stage, in the process of network integration, because the common nodes crossing between networks will receive the networking beacon frames sent by hidden terminals, frame collisions will occur when nodes receive beacon frames in the local network, resulting in received The failure of the beacon frame will also make it difficult to realize the rapid integration of the local area network in the area

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