Graded exit control method for intelligent terminal of intelligent substation

A technology of smart substations and smart terminals, applied in the direction of electrical components, circuit devices, etc., can solve problems such as malfunctions and losses, and achieve the effect of ensuring real-time performance

Inactive Publication Date: 2015-04-01
XJ ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is necessary to carry out real-time rapid export under the premise of ensuring safety and reliability, otherwise, it may cause misoperation and cause huge losses

Method used

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  • Graded exit control method for intelligent terminal of intelligent substation
  • Graded exit control method for intelligent terminal of intelligent substation
  • Graded exit control method for intelligent terminal of intelligent substation

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Embodiment Construction

[0022] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, the present invention provides a hierarchical export control method for smart terminals in smart substations, including the following steps:

[0024] (1) The FPGA of the smart terminal in the smart substation receives the GOOSE message, performs verification, and sends it to the CPU after passing the verification. If the verification is incorrect, the message is considered damaged and discarded.

[0025] According to the IEC61850 series standards, the transmission service of GOOSE messages is coded from the application layer to the presentation layer, and then directly mapped to the bottom layer (data link layer and physical layer), without going through the network layer and transport layer, and using switched Ethernet technology Ensure real-time transmission of messages. In order to ensure the real-time pe...

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Abstract

The invention discloses a graded exit control method for an intelligent terminal of an intelligent substation. GOOSE messages sent by a relay protection and monitoring device are received in real time by an intelligent inspection method; steady state messages and sudden change messages are subjected to intelligent judgment receiving processing, so that the real-time property of quick action exit is ensured, and CPU (central processing unit) resources are prevented from being massively occupied for a long time to avoid influencing the stability of a device and the processing of other tasks; meanwhile, protection control commands of a circuit breaker and a disconnecting link are analyzed and distinguished into different priorities, pre-exit is combined with a CPU and an FPGA (field programmable gate array) on hardware, and the quick and reliable exit is realized in a time range of 4-7ms according to different priorities finally.

Description

technical field [0001] The invention belongs to the technical field of electric power system substation automation, and relates to a hierarchical export control method of an intelligent terminal of an intelligent substation. Background technique [0002] The smart terminal is an intelligent device that receives digital signals in a smart substation and realizes the control and operation of primary equipment such as circuit breakers and knife switches; the GOOSE message is a network message that complies with the definition of the DL / T 860 substation communication network and system standard. As a key device in the process layer, the smart terminal undertakes the important task of collecting and controlling the state of the equipment, and is one of the key devices in the process layer of the smart substation. It receives commands from relay protection devices and measurement and control devices through GOOSE, and realizes export control of primary equipment such as circuit br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
Inventor 安永帅李刚周水斌闫志辉袁涛唐宇
Owner XJ ELECTRIC
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