Abstract: With Chinas “13th Five-Year” overall plan is put forward, the UhV power transmission and the smart grid are still the top priority in the power grid construction projects. The continuous development of smart grid technology has promoted the development of intelligent substation technology, the disadvantages of the traditional substation monitoring system, such as the independent designation and its disunity data, have made it difficult to fit the current demands. The intelligent auxiliary platform has solved the above problem. This paper designs a reliable and steady front data acquisition module based on three-tier architecture including the data layer, protocol layer and management layer, the module has good flexibility and scalability so that it’s able to provide stable and reliable raw data to the platform.

Key words:  intelligent substation, intelligent auxiliary platform, three-tier architecture, data acquisition