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A kind of dual CPU information interaction method in relay protection device

A relay protection device and information interaction technology, which is applied to emergency protection circuit devices, emergency protection data processing devices, circuit devices, etc., can solve the problems of being susceptible to interference and error, low reliability of dual CPU interaction, etc., to avoid fixed value The effect of mistuning

Active Publication Date: 2022-07-22
NR ELECTRIC CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a dual-CPU information interaction method in a relay protection device, and solve the technical problems of low reliability of dual-CPU interaction and susceptibility to interference and errors in the prior art

Method used

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  • A kind of dual CPU information interaction method in relay protection device
  • A kind of dual CPU information interaction method in relay protection device
  • A kind of dual CPU information interaction method in relay protection device

Examples

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Embodiment Construction

[0021] The dual-CPU information interaction method in the relay protection device proposed by the present invention is a dual-CPU information interaction method based on various measures such as redundant data partition storage, MD5 verification and readback verification. It ensures the security and reliability of information exchange.

[0022] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0023] like figure 1 As shown, the relay protection device includes a human-machine CPU, a protection CPU and a dual-port RAM. The human-machine CPU is responsible for handling the human-machine interface, communication, wave recording, etc. The protection CPU is responsible for processing the protection logic, and the dual-port RAM is responsible f...

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Abstract

The invention discloses a dual-CPU information exchange method in a relay protection device. During normal operation, the protection CPU only sends data to a dual-port RAM, and after writing is completed, an operation permission signal is sent to the human-machine CPU, and the human-machine CPU receives the operation After enabling the signal, read the dual-port RAM; when setting the fixed value: the protection CPU sends the operation permission and write permission commands to the HMI CPU after receiving the fixed value setting unlocking signal; the HMI CPU sends the set value to be set to the dual-port RAM. After entering the RAM, the protection CPU withdraws the operation permission and write permission commands, and reads the fixed value from the dual-port RAM; the protection CPU sends the fixed value setting result to the dual-port RAM fixed value confirmation area and sends the operation permission, Write permission command; HMI CPU reads fixed value from dual-port RAM. The present invention ensures the security and reliability of the information interaction without affecting the information interaction efficiency.

Description

technical field [0001] The invention relates to a dual-CPU information exchange method in a relay protection device, and belongs to the technical field of relay protection. Background technique [0002] With the popularization of dual-port RAM applications in dual-CPU systems in relay protection devices, the reliability factors were less considered in the interaction of dual-CPU systems in the past, which could not meet the requirements in high-demand situations such as nuclear power. The current general method is a multiple redundant fault-tolerant design. The redundant data is placed in a continuous space, which makes it easy to be disturbed at the same time and make mistakes. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a dual-CPU information exchange method in a relay protection device, and to solve the technical problems of low reliability of dual-CPU interaction in the prior art an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F15/17H02H1/00
CPCG06F15/17H02H1/0092
Inventor 石勇侯炜陈俊倪群辉江长青周进
Owner NR ELECTRIC CO LTD
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