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IEC61850-9-2 network storm dynamic monitoring method of merging unit device

A dynamic monitoring and network storm technology, applied in data exchange networks, electrical components, digital transmission systems, etc., can solve problems such as network congestion of switches, bandwidth occupied by storm messages, abnormal IED equipment, etc.

Inactive Publication Date: 2017-01-04
NARI TECH CO LTD +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

When a network storm occurs, a large number of repeated messages are transmitted in the smart substation network, and the storm messages occupy a large amount of bandwidth, causing network congestion in switches and affecting data communication between IEDs
Moreover, when the IED equipment receives the storm message, it may cause the abnormality of the IED equipment, directly affect the reliability of the protection action, and make the whole substation in a state of out of control

Method used

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  • IEC61850-9-2 network storm dynamic monitoring method of merging unit device

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Embodiment Construction

[0050] The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0051] The method for dynamically monitoring the IEC61850-9-2 network storm by the merging unit device, the overall flow chart is as follows figure 1 shown, including the following steps:

[0052] Step 1, the merging unit parses the received IEC 61850-9-2 message;

[0053] It should be noted that the changing rules of IEC 61850-9-2 messages include but are not limited to: the sequence number (sampCnt) of each sample value in the SV message is incremented, and when the clock synchronization signal (smpSynch) is synchronized, the sequence number of the sample value is set to 0 ; When the merging unit loses the time synchronization signal and does n...

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Abstract

The present invention discloses an IEC61850-9-2 network storm dynamic monitoring method of a merging unit device. The method is characterized by comprising a first step that a merging unit analyzes a received IEC61850-9-2 packet; and a second step that whether the packet has a storm packet is determined by using a two-point monitoring method, wherein if the packet has the storm packet, a storm identifier is set 1, and the channel quality of a packet in an output cache is set invalid. According to the method, wrong data information is effectively prevented from being output, and the running stability of the merging unit device is improved. On the basis of the IEC61850-9-2 storm packet monitoring, multi-level control is performed by using control words, the method has high openness and flexibility, the network storm monitoring function has high anti-interference while basic functions of the merging unit device are realized, the data transmission security is ensured, and the monitoring method ensures that the merging unit device can run safely.

Description

technical field [0001] The invention relates to a method for dynamically monitoring IEC61850-9-2 network storms by a merging unit device. Background technique [0002] The intelligent substation automation system consists of a process layer, an interval layer and a station control layer. The three layers are connected through an open network, which eliminates a large number of cables generated by traditional equipment connections. While the networking of smart substations brings convenience, it also makes the IED devices (intelligent electronic devices) in smart substations increasingly dependent on the network. When there is an abnormality in the network, it may cause the loss of the function of the IED devices in normal operation and affect the IED devices. The stability of operation may even cause serious electric safety accidents. Therefore, preventing and responding to network anomalies has become the research focus of smart substations today. [0003] Among many netw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/703H04L45/28
CPCH04L43/0876H04L45/28
Inventor 何昭辉姚庆华周成吴海胡国曹锐
Owner NARI TECH CO LTD
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