Smart Grid Satellite Synchronized Clock Error Analysis And Correction Methods

West to east and the national network with the implementation of the strategic plan, our increasing size of power systems, power structures and increasingly complex operation node, which made chinese electric power system monitoring and higher requirements, especially for the needs of time synchronization.This article is focused on these issues, carried out a lot of research work, its main purpose is to create a unified high-precision time base synchronization. This paper discusses the satellite synchronized clock system service system research background and significance, and Research in the field, and then GPS and compass satellite synchronized clock working principle and characteristics are described in detail and analysis, and then the satellite clock error estimation and correction method of analysis, and finally the use of satellite clock and crystal oscillator clock signal accuracy complementary, designs high-precision satellite synchronized clock, and its application is described in detail.Finally, Shanxi Power Grid existing GPS satellite synchronized clock system to do the analysis presented inadequacies of the existing system, and for the lack of proposed improvements.