Method for reconstructing roundabout path during interruption of wide-area protection communication under heavy load

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

Active Publication Date: 2016-08-10
CHINA THREE GORGES UNIV
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Problems solved by technology

The goal is to balance the networ

Method used

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  • Method for reconstructing roundabout path during interruption of wide-area protection communication under heavy load
  • Method for reconstructing roundabout path during interruption of wide-area protection communication under heavy load
  • Method for reconstructing roundabout path during interruption of wide-area protection communication 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

The invention relates to a method for reconstructing a roundabout path during interruption of wide-area protection communication under a heavy load. The method takes a wide-area protection communication network under the heavy load as an object, and constructs an appropriate shunt roundabout communication path quickly based on the left undamaged network when a wide-area protection communication optical fiber is interrupted so as to ensure that a wide-area protection communication service is carried out normally. A single light-load channel roundabout path reconstruction algorithm is designed for a GOOSE message with the highest delay requirement and importance degree by taking satisfaction for requirements of wide-area protection for information as a foundation and taking network load balance after heavy-load communication roundabout as an objective. The algorithm comprehensively considers factors such as the bandwidth, the distance, the channel utilization rate and the like which affect the channel delay, reconstructs a channel weight index, and optimizes a roundabout path with the shortest delay by the aid of a Dijkstra optimization algorithm.

Description

technical field [0001] The invention belongs to the field of relay protection in electric power systems, in particular to a method for reconfiguring a detour 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, acid rain corrosion, and powe...

Claims

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Application Information

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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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