Demonstration about Principle of Security Guard on Secondary Systems in Guangxi Electric Power System

For the pupose of gaining a better security guard for the secondary system,the score and projects are determined according to praetical experiences from the appointed project for security guard in monitoring system of Guangxi Electric Power System; and technical principles of security guard are suggested. Comparing the detail applications among four principles that include security location, network specialization, transvevse isolation; and longitudinal certification, common key and certification technologies are adopted by control system for electric power production in Guangxi,together with other security guard and application system, as to satisfy the technical demands of security guard for the secondary system in Guangxi Electric Power System.