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An Ethernet transmission delay optimization method for smart terminal equipment in smart substations

A technology of intelligent terminal equipment and intelligent substation, applied in the field of power system, can solve problems such as optimization of Ethernet transmission delay, and achieve the effect of improving real-time transmission, optimizing delay quality, and reducing transmission delay

Active Publication Date: 2015-09-02
BEIJING SIFANG JIBAO AUTOMATION +1
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of Ethernet transmission delay optimization in intelligent substations

Method used

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  • An Ethernet transmission delay optimization method for smart terminal equipment in smart substations
  • An Ethernet transmission delay optimization method for smart terminal equipment in smart substations
  • An Ethernet transmission delay optimization method for smart terminal equipment in smart substations

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Embodiment Construction

[0024] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] Such as figure 1 Shown is a traditional smart grid device message sending queue processing flow chart. Traditional smart grid equipment, for message sending queue processing, such as figure 1 As shown, the queuing principle is adopted, that is, the sending order is executed according to the order in which the packets are received, and the priority of the packets cannot be distinguished. No matter how urgent important messages are, they need to be sent in queue order, which often increases the waiting delay of urgent messages, and cannot send messages with high real-time requirements in time, and cannot optimize the sending delay of messages.

[0026] to overcome figure 1 As shown in the prior art, the defects of the traditional smart grid equipment message sending queue processing flow, this application discloses an Etherne...

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Abstract

The invention discloses an ethernet dispatching time delay optimization method used on an intelligent substation intelligent terminal. A form of a central processing unit (CPU) and a field programmable gata array (FPGA) is adopted by an ethernet communication frame of the intelligent substation intelligent terminal, wherein the CPU is used for processing data, and the FPGA is used for achieving a port and data management. The to-be-sent ethernet data is evaluated in a priority level mode by CPU upper software, the ethernat data and priority level table are sent to the FPGA by a CPU lower software, and the FPGA sends data packages according to a principle that high priority is preferred to a multiaction computer (MAC) according to the priority level. The ethernet time delay quality is optimized, dispatching instantaneity of important data packages is improved, and dispatching time delay of the important data packages is reduced.

Description

technical field [0001] The invention belongs to the technical field of electric power systems, and relates to an intelligent terminal device, in particular to an optimization scheme for an Ethernet data transmission time delay of a terminal device in an intelligent substation. Background technique [0002] The current mainstream direction of power grid development is to establish a smart grid, which requires digitalization of primary equipment and networking of secondary equipment. Therefore, digital technologies, especially digital hardware platforms, play an increasingly prominent role in power grids. Among them, the digital hardware platform of the secondary equipment has two very important functions: 1. Receive the control command of the process layer network or the control command of the relay protection device, and drive the corresponding export circuit to complete the control function of the primary equipment. And it has the function of preventing misoperation; 2. Sa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/865H04L47/6275
Inventor 杨志涛胡炯徐刚徐万方刘涛周涛
Owner BEIJING SIFANG JIBAO AUTOMATION
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