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Time checking method for forward isolating external network side and internal network side

A positive isolation, network-side technology, applied in time-division multiplexing systems, electrical components, transmission systems, etc., can solve problems such as inability to synchronize time on the internal network side, and achieve the effect of ensuring controllability and security

Inactive Publication Date: 2019-03-26
南京天谷电气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the shortcoming that the internal network side cannot be timed in the prior art, and proposes a method for forwardly isolating the external network side to the internal network side time synchronization method

Method used

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  • Time checking method for forward isolating external network side and internal network side

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] refer to figure 1 , a method for forwardly isolating the time synchronization between the external network side and the internal network side, comprising the following steps:

[0021] S1. Set the front-end processor to collect data in the production control area;

[0022] S2. Set up the rear machine to transmit data to the management information area;

[0023] S3. Set up a power-specific horizontal one-way safety isolation device that has been tested and certified by the designated department of the state between the front-end machine and the back-end machine to realize the one-way data transmission from the production control area to the management information area;

[0024] S4. The rear computer obtains the accurate time through the external network, and encodes the time according to the combination of FF and 00. The number of FF represents the specific time, and 00 represents the interval;

[0025] For example, on April 9, 2018, the year can be subtracted by 2000 b...

Embodiment 2

[0031] refer to figure 1 , a method for forwardly isolating the time synchronization between the external network side and the internal network side, comprising the following steps:

[0032] S1. Set the front-end processor to collect data in the production control area;

[0033] S2. Set up the rear machine to transmit data to the management information area;

[0034] S3. Set up a power-specific horizontal one-way safety isolation device that has been tested and certified by the designated department of the state between the front-end machine and the back-end machine to realize the one-way data transmission from the production control area to the management information area;

[0035] S4. The rear computer obtains the accurate time through the external network, and encodes the time according to the combination of FF and 00. The number of FF represents the specific time, and 00 represents the interval;

[0036] For example, on March 8, 2017, the year can be subtracted by 2000 b...

Embodiment 3

[0042] refer to figure 1 , a method for forwardly isolating the time synchronization between the external network side and the internal network side, comprising the following steps:

[0043] S1. Set the front-end processor to collect data in the production control area;

[0044] S2. Set up the rear machine to transmit data to the management information area;

[0045] S3. Set up a power-specific horizontal one-way safety isolation device that has been tested and certified by the designated department of the state between the front-end machine and the back-end machine to realize the one-way data transmission from the production control area to the management information area;

[0046] S4. The rear computer obtains the accurate time through the external network, and encodes the time according to the combination of FF and 00. The number of FF represents the specific time, and 00 represents the interval;

[0047] For example, on February 7, 2016, the year can be subtracted by 200...

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Abstract

The invention relates to the technical field of information communication technology of a power secondary system, in particular to a time checking method for forward isolating external network side and internal network side, comprising the following steps of: S1, setting a front-end machine for collecting data of a production control area; S2, setting a rear-end machine for transmitting data to the management information area; S3, setting a power-specific horizontal one-way safety isolating device tested and certified by a national designated department between the front-end machine and the rear-end machine for realizing one-way data transmission from the large area of the production control area to the management information area; S4, the post-machine obtaining the accurate time through the external network, and encoding the time according to the combination of FF and 00, wherein the number of FFs represents a specific time, and 00 represents an interval; S5, the front-end machine firstly dividing the area by 00 after receiving the code, then finding the FF of the corresponding year, month and day, and counting the number of FF to restore the specific time. The time checking method for forward isolating external network side and internal network side realizes the time checking for external network side and internal network side, and the method is simple and easy to implement.

Description

technical field [0001] The invention relates to the technical field of information communication of electric power secondary systems, in particular to a time synchronization method for forwardly isolating the external network side to the internal network side. Background technique [0002] Secondary power system, including the business processing system based on computer and network technology and the power monitoring system of intelligent equipment for monitoring and controlling the power grid and the production and operation process of the power plant, as well as the wide-area data network dedicated to power dispatching at all levels, and the power production dedicated dial-up network. [0003] The "Regulations on the Safety Protection of the Secondary Power System" clearly requires that the safety protection of the power secondary system should adhere to the principles of security partition, network dedicated, horizontal isolation, and vertical authentication to ensure th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04L29/06
CPCH04J3/0635H04L63/02
Inventor 杨学满丁剑锋张旭
Owner 南京天谷电气科技有限公司
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