Impedance matching method and system for medium voltage distribution network carrier communication based on network looseness

Abstract

The invention discloses a medium-voltage distribution network carrier communication impedance matching method and system based on network looseness. The method includes: dividing the medium-voltage distribution network into several impedance matching sections according to the network looseness of the main line; The group optimization algorithm performs optimal coordination and matching on the impedances of each node in each impedance matching interval. The medium-voltage distribution network carrier communication impedance matching method and system based on the looseness of the network provided by the present invention solves the problem that the current power line carrier communication impedance matching method can only improve the communication quality in the point-to-point mode, and cannot realize each communication in the carrier network of multiple communication nodes. The problem of coordinated distribution of power among communication nodes can realize the coordinated distribution of power among communication nodes in a carrier network with multiple communication nodes. The complex medium-voltage power distribution network is divided into several impedance matching intervals, and the particle swarm optimization algorithm is used to solve the problem. Impedance matching, the principle of the matching method is clear, and the calculation speed is fast.

Description

technical field [0001] The invention relates to the technical field of power line carrier communication, in particular to an impedance matching method and system for medium voltage distribution network carrier communication based on network laxity. Background technique [0002] Power line carrier communication is a technology that uses power lines as a medium for data or voice information transmission. It uses the existing power distribution network as a communication channel, and has unique advantages such as natural network channel resources, low operating costs and low maintenance costs. However, unlike other dedicated wired transmission media such as optical fiber and coaxial cable, power lines are not designed to achieve communication goals, and their carrier channel characteristics are closely related to factors such as topology, line characteristics, and load conditions of the actual power grid. Affected by a variety of uncontrollable factors, the communication channe...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a medium-voltage distribution network carrier communication impedance matching method and system based on network looseness, which solves the problem that the current power line carrier communication impedance matching method can only improve the communication quality in the point-to-point mode, and cannot realize multiple communication nodes. The problem of coordinated power distribution between communication nodes in the carrier network can realize the coordinated distribution of power among communication nodes in the multi-communication node carrier network, and divide the complex medium-voltage power distribution network into several impedance matching sections. Group optimization algorithm for impedance matching, the principle of the matching method is clear, and the calculation speed is fast

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