Closed-loop control system and method for positive and reverse isolators

Abstract

The invention discloses a closed-loop control system and method for positive and reverse isolators. The system comprises a data communication module, a message segmenting module and an engineering maintenance module; the data communication module is used for organizing service data and positive heartbeat messages of a positive data channel and service data E files and reverse heartbeat files of a reverse data channel; the message segmenting module is used for ensuring that no packet splicing occurs in the TCP (transmission control protocol) long-link data transceiving mode; the engineering maintenance module allows a maintenance engineer to only need to locate the communication problem at one end of the positive and revere isolators. The problem that device crash or data transmission channel causes cannot be quickly located when service data transmission of the positive and reverse isolators is jammed is solved, and according to the application features of a high-safety communication model, the problem that maintenance crossing two ends of the positive and reverse isolators is difficult is solved.

Description

technical field [0001] The invention relates to the field of information communication of electric power secondary systems, in particular to a closed-loop control system and control method of forward and reverse isolation devices between a production control area and a management information area of ​​a dedicated electric power network. 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, net...

AI Technical Summary

Problems solved by technology

[0004] The forward and reverse isolation device effectively realizes the controllability and security of the power communication network, and improves the information security level of defense against computer attacks and viruses. However, this communication model with strong security and physical isolation also brings power data communication. Inconvenience in business, such as when business data transmission is blocked, it is impossible to quickly locate the cause of device downtime or data transmission channel

At the same time, the communication model of strong security physical isolation is often applied to wide-area data networks with large geographical spans, and it is very difficult to maintain data at both ends of a dedicated horizontal one-way security isolation device

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