Based on the embedded real-time operating System

a general software platform for Relay Protection equipments in power systems is presented.System designed by this software platform can run well in different micro-processors

and therefore

makes up the drawbacks that original systems are designed only for certain kinds of micro-processors.Meanwhile

through application of the idea of soft PLC

the online programming function of the protective logic

together with graphic interface

is added to this platform.Thus

with graphic programming language

this platform enables those designers and customers

who are not familiar with specific programming language of the Relay Protection Equipment

program various protective logics online according to different situations.