Ethernet-based power distribution network distributed control system and method

Abstract

The invention relates to an Ethernet-based power distribution network distributed control system and method. The system comprises a measurement and control communication unit and a data acquisition and conversion unit, wherein the measurement and control communication unit comprises a controller and a dual Ethernet switching unit connected with the controller; the data acquisition and conversion unit comprises a management core and a protection core; and the controller is used for controlling the dual Ethernet switching unit to establish connection with the management core to construct a first local area network for scheduling communication, and controlling the dual Ethernet switching unit to establish connection with the protection core to construct a second local area network for peer-to-peer communication. According to the system, independent operation of the first local area network for dispatching communication and the second local area network for peer-to-peer communication is achieved, and when the first local area network for dispatching communication or the second local area network for peer-to-peer communication breaks down, the other local area network is not affected, so that the anti-interference capacity of power distribution network communication and the reliability degree of communication data are improved.

Description

technical field [0001] The present application relates to the technical field of electric power engineering, in particular to an Ethernet-based distribution network distributed control system and method. Background technique [0002] With the increasing development of power engineering technology and the gradual construction of intelligent distribution network, all kinds of distribution facilities tend to be intelligent and networked, and the technical requirements for distribution network automation are getting higher and higher. Traditionally, DTU three-remote station terminals are widely used in distribution network automation. Among them, DTU three-remote station terminals are mainly used for switching stations, switch stations, cable boundary rooms, ring network cabinets and power distribution rooms , Low-voltage substation and other places monitoring, can complete the monitoring of switching station, switch station, cable boundary room and power distribution room, low-...

AI Technical Summary

Problems solved by technology

[0003]Traditional DTU is composed of DTU cabinet, core processing unit, communication unit and backup power supply system, generally monitors 4-16 circuits, and the wiring is redundant and complicated

At the same time, in practical applications, the terminal of the DTU three-remote station is installed in the ring network cabinet to realize the three-remote function and the line loss collection function. The conventional protection function is realized by the comprehensive measurement and control protection device installed on the switch cabinet, and the built-in communication unit It can only realize internal communication, but cannot realize the communication between the DTU three-remote station terminal and other protection functions. It needs to increase the wireless communication device, and it is easy to have the problems of poor communication anti-interference ability and low reliability.

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