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Network storm suppression method in intelligent transformer station process layer communication

A technology for smart substations and network storms, applied in the field of network storm suppression in the process layer communication of smart substations, can solve problems such as no solutions, and achieve the effects of resisting the influence of LED equipment, suppressing network storms, and improving reliability.

Active Publication Date: 2014-10-15
NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
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  • Abstract
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Problems solved by technology

Most of the literature has analyzed the impact of network storms on power dispatching switches, but no solutions have been given

Method used

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  • Network storm suppression method in intelligent transformer station process layer communication

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Embodiment Construction

[0014] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0015] A method for realizing network storm suppression in intelligent substation process layer communication of the present invention, the method includes:

[0016] When abnormal traffic is detected through RMON traffic monitoring, the following processing can be performed based on ports, VLANs, and service flows:

[0017] A) Cut off, permanently cut off and send a remote alarm;

[0018] B) Blocking, blocking according to the specified blocking time, and re-opening the communication after timeout;

[0019] C) Suppression, limiting the passing flow rate, so as to achieve the purpose of discarding redundant data packets;

[0020] D) Combined use, after blocking and opening several times, it is found that the storm still exists, it will be permane...

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Abstract

The invention discloses a network storm suppression method in intelligent transformer station process layer communication. Port flow is detected in real time via a switch operating a network monitoring service, and when flow reaches a threshold value, processing is performed by adopting a storm processing method. When damage to a network card of user terminal communication equipment is detected, a separating method is adopted via the switch operating the network monitoring service. When a looped network or protocol fault is detected, a blocking method is adopted via the switch operating the remote network monitoring service. When the situation that flow surpasses the specified threshold value is detected, a suppression method is adopted via the switch operating the remote network monitoring service. When a fault occurs on the switch, processing is performed via a device storm isolation blocking mechanism of an adjacent switch via a detection task operated by the switch. Permanent separation, blocking with the designated length of time and flow speed limit are performed on a communication port, or the aforementioned motions are applied in combination so that effective suppression of intelligent transformer station process layer network storm is realized.

Description

technical field [0001] The invention relates to a method for suppressing a network storm in the process layer communication of an intelligent substation, and belongs to the technical field of communication. Background technique [0002] The intelligent substation automation system consists of three parts: station control layer, interval layer and process layer. A layered and partitioned open network connection is adopted between the three layers, and a large number of secondary cables connected between traditional substation equipment are eliminated. [0003] The introduction of the network platform makes intelligent electronic devices (IEDs) highly dependent on the stable transmission of network messages. Once the network is abnormal, the functions of protection and other IED devices may be lost, directly affecting the reliability of smart substation operation, and even triggering chain power security. Accidents, prevention and response issues of network anomalies have bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/24
Inventor 晏平仲张宪军梁志宝吴枢斌李弦黄华
Owner NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
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