Communication safety protection method for by means of wireless public network

Abstract

The invention discloses a communication safety protection method by means of a wireless public network. The method comprises the steps that a master station is isolated from a public network through a serial port power proprietary protocol; dispatch digital certificate authentication and transmission encryption are achieved on the master station and a substation; a safety gateway is additionally arranged; data received by the wireless public network are transmitted to an SCADA system through a communication interface. Meanwhile, a safety policy is adopted to limit the access range and resources. The TCP / IP network communication technology, the IPSEC safety tunnel technology and the USBKET encryption authentication technology are integrated, emergency recovery, temporary debugging and safety access with no power communication conditions are achieved on the condition that power system communication is abnormal, and a safe and reliable transmission channel is provided for power grid dispatch automation real-time data transmission. Safe running of a power system is ensured on the condition that existing application environment and software do not need to be changed. The communication safety protection method has the advantages that the step design is reasonable, safety protection measures are competent, working performance is stable and reliable, and the method is suitable for being popularized for industries.

Description

Technical field [0001] The invention relates to a communication network safety protection method, in particular to a communication network safety protection method that utilizes a wireless public network for the transmission of real-time data of power grid dispatching automation when the communication network of the power system is abnormal. Background technique [0002] With the rapid development of the national economy, the continuous improvement of people's living standards and the continuous advancement of science and technology, the power industry, as the lifeblood of the national economy, its information construction, upgrading, and transformation are becoming more and more urgent. However, reviewing the current state of informatization construction of power enterprises in my country, the geographical distribution of substations in many places is unbalanced, and the locations are relatively scattered; optical fiber communication, wired cable, and power carrier communication ...

AI Technical Summary

Problems solved by technology

However, looking at the current information construction status of power enterprises in my country, the geographical distribution of substations in many places is unbalanced and the locations are scattered; Faced with great pressure; the communication networking problem of telecontrol and other automation systems has been plagued by the promotion and implementation of scheduling automation in many places

Since the data communication between the main station and the sub-station does not carry out identity authentication and data encryption, it cannot resist the attack of the external network on the sub-station, that is, hacker attack

At present, the upper and lower master stations temporarily use the public network for data communication, only some simple security protection measures are adopted, such as intrusion detection and access restrictions, and there are still security risks such as poor management of service providers, which will make the master station system pose a serious safety hazard

Cause unpredictable adverse consequences of the power grid

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