Hydropower station Ethernet-type security isolation device inside-outside universal data bridge

Abstract

The invention discloses a hydropower station Ethernet-type security isolation device inside-outside universal data bridge comprising an inner bridge network terminal, an outer bridge network terminal, and a security isolation device. The inner bridge network terminal is mounted in a hydropower station real-time control area, and is used for collecting data of monitoring equipment in the hydropower station real-time control area. The security isolation device is used for realizing one-way transmission between the inner bridge network terminal and the outer bridge network terminal and physical isolation between the inside and outside of the Ethernet and transmitting the data collected by the inner bridge network terminal to the outer bridge network terminal in a one-way mode. The outer bridge network terminal is mounted in a hydropower station production management area, and is used for receiving the data from the inner bridge network terminal and transmitting the data to management equipment in the hydropower station production management area in real time. According to the invention, the hydropower station production management area can acquire the data of the hydropower station real-time control area in real time, and real-time production process data can be added in the management process to realize management and control integration.

Description

technical field [0001] The invention relates to the technical field of data transmission, in particular to an internal and external universal data bridge of an Ethernet type safety isolation device of a hydropower station. Background technique [0002] There are three topological structures of the safety zone of the power secondary system, all of which can meet the requirements of the safety protection system of the power secondary system, such as figure 1 shown. From figure 1 It can be seen from the figure that the data in the real-time control area must pass through the special safety isolation device to be transmitted to the production management area. The function of the safety isolation device is: the data in the real-time control area can be transmitted to the production management area through Ethernet, but the data in the production management area cannot be transmitted to the real-time control area through Ethernet, so as to realize the communication between the r...

AI Technical Summary

Problems solved by technology

A connection cannot be established between the two Ethernet ports, that is, a two-way connection cannot be established between the input Ethernet port and the output Ethernet port. Of course, a TCP connection cannot be established between the above two Ethernet ports.

Only the connectionless UDP communication protocol can be used between the above two Ethernet ports, that is, only the connectionless UDP communication protocol can be used to realize one-way data transmission from the real-time control area to the production management area, while the production management area cannot send data to the real-time control area. transfer any data

[0004] However, the real-time control area has a large amount of data and high real-time requirements. As a result, the production management area lacks a large amount of real-time data in the real-time control area, making it impossible to incorporate the production process into the management process, and it is impossible to realize the integration of management and control.

[0005] In the system configured with safety isolation devices, although the data exchange between the real-time control area and the production management area adopts the connectionless UDP protocol, the data exchange methods are different, and there is a lack of a common means

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