Bidirectional communication isolating device of power plant

Abstract

The invention discloses a bidirectional communication isolating device of a power plant. With the adoption of the bidirectional communication isolating device, communication isolation between multiple unit plant control systems is realized, and meanwhile, bidirectional data exchange between multiple unit plants and a public system is realized. The main functions of the bidirectional communication isolating device are as follows: TCP (transmission control protocol) connection between unit plant application gateways is prohibited to be directly and indirectly established; TCP connection is established between the application gateways of the unit plants and the public system as well as inside and outside network cards of the insolating device; and the inside and outside network cards of the insolating device are in non-networked connection in the device, so that complete physical isolation between multiple unit plant control networks is realized, and meanwhile, bidirectional data exchange is realized between the unit plants and the public system in a non-networked mode; comprehensive message filter and assess control based on an IP, a transmission protocol, a transmission port and a communication direction are supported by adopting a transparent message monitoring mode without an IP address and an MAC (multi-access computer) address; a customized application layer protocol function is supported; and the bidirectional communication isolating device has safe and easy-to-use maintaining and managing manner, and has a graphical maintaining and managing tool based on a centralized safe management manner, so that the requirements on the maintainability and usability of the process system are satisfied.

Description

technical field [0001] The invention belongs to the technical field of power plant control, and specifically relates to a two-way communication isolation device capable of realizing network isolation between unit unit control systems of a power plant, and at the same time realizing two-way data exchange between unit unit units and public systems to ensure safe and stable operation of the system. Background technique [0002] With the continuous increase of unit capacity in power plants, more and more attention has been paid to the safe and stable operation of unit units. The data network of the unit unit monitoring system is an important infrastructure of the power plant. It is not only related to power production, operation and service, but also closely related to the safe operation of power grid dispatching and control systems, and is an important part of power system security. [0003] The unit monitoring system of a power plant has very high safety requirements. General...

AI Technical Summary

Problems solved by technology

Common measures include configuring firewalls, adding IP and port filtering rules, and dividing VLANs through Layer 3 switches or routers. However, these measures have certain limitations and cannot achieve a good isolation effect. Therefore, physical isolation is used as a security Effective isolation methods are gaining more and more attention

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