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A method for reconfiguring diversion and detour paths when wide-area protection communication is interrupted under heavy load

A detour path, wide area protection technology, applied in transmission systems, electrical components, etc., to achieve the effect of network load balancing

Active Publication Date: 2018-12-14
CHINA THREE GORGES UNIV
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Problems solved by technology

The goal is to balance the network load after diversion and detour

Method used

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  • A method for reconfiguring diversion and detour paths when wide-area protection communication is interrupted under heavy load
  • A method for reconfiguring diversion and detour paths when wide-area protection communication is interrupted under heavy load
  • A method for reconfiguring diversion and detour paths when wide-area protection communication is interrupted under heavy load

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specific Embodiment approach

[0037] by figure 2 Taking the IEEE14 node communication simulation model as an example, a detour path reconstruction strategy when heavy-load wide-area protection communication is interrupted, the specific implementation method is as follows:

[0038] Step 1: Detect channel interruption between core routers LSR2-LSR1. The GOOSE message on the interrupt channel comes from station domain 2, namely Sub2. The throughput of GOOSE message is about 12Mbit / s. The current network channel bandwidth, channel distance and channel throughput matrix are shown in formulas (1), (2) and (3) respectively. Prepare for the implementation of the "single light-load channel circuitous path reconstruction algorithm";

[0039]

[0040]

[0041]

[0042] Step 2: Normalize the channel bandwidth matrix formula (1) and the channel distance matrix formula (2) of the entire network. Calculate the channel utilization matrix considering the influence of GOOSE message from the channel throughput ...

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Abstract

A method for reconfiguring traffic diversion and detour paths when wide-area protection communication is interrupted under heavy load. The method takes the wide-area protection communication network under heavy load as the object, and quickly constructs a suitable The diversion and circuitous communication channels are used to ensure the normal operation of wide-area protection communication services. To meet the information requirements of wide-area protection as the basis, and to balance the network load after heavy-duty communication detours as the goal, design a single light-load channel detour path reconstruction for GOOSE messages with the highest delay requirements and importance Algorithm, this algorithm comprehensively considers the bandwidth, distance, channel utilization and other factors that affect the channel delay, constructs the channel weight index, and uses the Dijkstra optimization algorithm to find the shortest detour path.

Description

technical field [0001] The invention belongs to the field of relay protection in electric power systems, and in particular relates to a method for reconfiguring a diversion circuitous path when wide-area protection communication is interrupted under heavy load. Background technique [0002] Wide-area protection data collection range is wide, the collection frequency is high, and the collection volume is large. For the communication lines built in the early stage, due to the limitation of communication technology, the limitation of communication cost and the insufficient estimation of future communication business development and other factors, the communication bandwidth is set relatively small. Therefore, it is inevitable that there will be a situation of heavily loaded communication lines in the wide area network. [0003] Power communication optical cables are generally installed in overhead ground wires, which may be interrupted by natural factors such as lightning, aci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08
CPCH04L67/1029H04L67/1001
Inventor 李振兴张腾飞孟晓星李振华徐艳春邱立叶诗韵
Owner CHINA THREE GORGES UNIV
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