Abstract:In order to ensure the safe, stable and reliable operation of the power grid, the scale of the power grid is constantly expanding, and dispatchers are also reducing the handling time of power grid accidents so that the power can be restored quickly.The traditional artificial fault analysis mode has long time efficiency and is not necessarily complete, so it is more and more difficult to meet the information requirements of decision makers.In this paper, in order to improve the power system fault response rate as the guidance, put forward a set of substation relay protection fault visualization analysis and the study status, early warning system, the main implementation based on SVG visualization technology, multi-dimensional visualization of fault inversion of fault analysis and protection equipment component level status monitoring and early warning technology such as the main function, system in the power grid failure can quickly obtain comprehensive fault characteristics, combines the condition of protection setting value, the switch quantity, sequence of protection operation comprehensive judgment protection movement situation, such as dynamic inversion, and protection is given to the conclusion that assistive technology for the power grid dispatching decision support, improve power supply reliability.