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Fault location method for electric power information network

A fault location and information network technology, applied in the field of electric power information, can solve problems such as complex implementation, achieve the effects of improving accuracy, simplifying problems, and improving timeliness

Active Publication Date: 2021-09-24
JIANGSU ELECTRIC POWER CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the implementation of the existing method is complicated, and it cannot meet the high timeliness of fault location while ensuring the accuracy of fault location

Method used

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  • Fault location method for electric power information network
  • Fault location method for electric power information network
  • Fault location method for electric power information network

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Embodiment Construction

[0023] The concepts of several detection sets used in the present invention are as follows:

[0024] 1) Available detection set T all: Randomly select several nodes in the information network to deploy probes, and each probe can send active detection packets to any network node in the information network, which is called a detection. According to the results returned by the detection, the status of the network nodes can be inferred. Bad. The set of all probes consisting of all probes to all network nodes is the available probe set T all , the probe sets described below are all subsets of this set.

[0025] 2) Fault detection set T obs : To ensure the reliable operation of the power information network, we cannot passively wait for the user to issue a fault report, but need to monitor the operation of the network in real time, so we must use the available detection set T all Select some probes to periodically send probe packets to the network, and the selected probes must b...

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Abstract

The invention discloses a fault location method for a power information network, which uses a Bayesian network model to describe the relationship between the detections in the candidate detection set and the nodes in the power information network, and combines the information gain of a single detection and the important nodes in a single detection path The number is used as the detection value to measure the diagnostic ability of each detection in the candidate detection set. From the candidate detection set, select the detection with the largest detection value to form a fault location set. The most likely state information of the power information network can be obtained from the returned detection results. Thereby locating the faulty node. The method of the present invention is simple in theory, the directed edge between the information node and the detection makes the fault location process clearer, defines a new detection value as a criterion for selecting a fault location set, and improves the accuracy of fault location; the conditions of the Bayesian network are used Independence, divide it into several subnets, and only update the detection of the same subnet when updating the detection value, reducing the detection selection time and improving the timeliness of fault location.

Description

technical field [0001] The invention relates to the technical field of electric power information, in particular to a method for locating faults in electric power information networks. Background technique [0002] In the smart grid, the power information network carries various power production services and is an important channel to ensure power communication services. However, the huge network structure causes faults to occur from time to time, and it is difficult to locate after a fault occurs. If the fault cannot be quickly and accurately detected, it will cause an electrical accident. Traditional network fault management mostly uses the northbound interface to passively collect alarm information sent by devices, and establishes an alarm-fault correlation model to analyze the root cause of the fault. However, passively waiting for the alarm will lead to poor timeliness in fault location, and once the alarm information is false, lost, and redundant However, the accuracy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24
CPCH04L41/0677
Inventor 李维姜红红刘少君赵新建高莉莎王博钱欣沙倚天
Owner JIANGSU ELECTRIC POWER CO
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