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Method for identifying IEC61850 key logical node

A technology of logical nodes and identification methods, which is applied in the field of identification of key logical nodes of IEC61850, and can solve problems such as the lack of research on key logical nodes in smart substations

Active Publication Date: 2017-06-13
STATE GRID CORP OF CHINA +1
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  • Summary
  • 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 to provide an IEC61850 key logical node identification method for the lack of research on key logical nodes in smart substations in the prior art

Method used

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  • Method for identifying IEC61850 key logical node
  • Method for identifying IEC61850 key logical node
  • Method for identifying IEC61850 key logical node

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specific Embodiment 1

[0047] The IEC61850 key logic node identification method includes the following steps:

[0048] Step 1. According to the logical node and communication information piece (Piece of Information for Communication, PICOM) transmission list defined by IEC61850-5, list the logical node and PICOM transmission list actually contained in the target substation;

[0049] Step 2: abstract each transmission link in the list into a transmission path of a directed network in turn to form a logical connection network of logical nodes. Among them, the logical node represents the node of the network, the PICOM transmission link between the logical nodes represents the edge of the network, and the transmission direction represents the direction of the edge;

[0050] Step 3. Assign a certain weight w to each PICOM transmission link of the logical connection network according to the signal type of each logical node;

[0051] Step 4. Merge the repeated edges and nodes of the network, and the weigh...

specific Embodiment 2

[0058] The IEC61850 key logic node identification method includes the following steps:

[0059] Step 1. According to the logical node and communication information sheet (Piece of Information for Communication, PICOM) transmission list defined by IEC61850-5, list the partial logical node PICOM transmission list contained in a substation of the present embodiment, such as figure 2 shown.

[0060] Step 2: abstract each transmission link in the list into a transmission path of a directed network in turn to form a logical connection network of logical nodes. Among them, the logical nodes represent the nodes of the network, the PICOM transmission link between the logical nodes represents the edge of the network, and the transmission direction represents the direction of the edge. This embodiment includes 2 source logical nodes PZSU and PDIS, wherein, PZSU includes 3 effective logical connection links, and PDIS includes 3 effective logical connection links. According to the trans...

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Abstract

The invention discloses a method for identifying an IEC61850 key logical node. The method comprises the following steps of S1.listing logical nodes and a Piece of Information for Communication transmission list which are actually included in an object substation according to logical nodes and a Piece of Information for Communication transmission list which are defined by a general standard IEC61850-5 of a power system; S2.forming a logical connection network with the logical nodes as nodes of the logical connection network, transmission links as edges of the logical connection network and transmission directions of the transmission links as directions of the edges; S3.distributing a corresponding weight to each logical link according to the types and the number of signals of the logical nodes at two ends of each transmission link; and S4.carrying out fault propagation experimentation on each logical node, counting the number of nodes of maximum connected subgraphs of the network after the logical node is invalid and stabilized, and sorting from small to big according to the importance of the logical nodes in order to obtain an importance order of the logical nodes of the substation. The method can provide basis and guarantee for safe and stable operation of an intelligent substation.

Description

technical field [0001] The invention relates to the intersection field of computer software technology and power system automation technology, in particular to an IEC61850 key logic node identification method. Background technique [0002] With the continuous development of electronic and computer technology, the relevant technologies of smart substations are becoming more and more mature. As an important node in the power system, the safety of the substation is related to the operation of the entire power grid. Therefore, it is of great practical significance to improve the reliability of related equipment and devices in smart substations. [0003] The IEC61850 standard is the only global general standard in the field of power system automation. It realizes the standardization of engineering operation of smart substations and proposes a public communication standard. Through a series of standardization of equipment, it forms a standardized output and realizes the wireless ...

Claims

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Application Information

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IPC IPC(8): H04L12/24
CPCH04L41/12H04L41/142H04L41/145
Inventor 蔡勇王涛刘勤金光明齐磊杨毅汪滢王先兵张华吴萍熊桂芳
Owner STATE GRID CORP OF CHINA
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