Method for graphically displaying ICD [IED (intelligent electronic device) capability description] virtual terminals of intelligent substations

The invention discloses a method for graphically displaying ICD [IED (intelligent electronic device) capability description] virtual terminals of intelligent substations. The method includes reading N ICD files, parsing each ICD file, constructing IED objects and expressing objects such as LD (logical devices), control blocks, input virtual terminals and output virtual terminals of each IED by the aid of nested data structures; displaying names of the various ICD files in lists; drawing integral layout charts of the input and output virtual terminals of each IED corresponding to a certain ICD in a graphical mode; responding to events such as click arrows and rectangular frames on graphical interfaces, respectively displaying description and quotation of GOOSE (generic object oriented substation event) or SV (sample value) types of input virtual terminals in tables and displaying description and quotation of various output virtual terminals of transmission data sets corresponding to the control blocks. The method has the advantage that a technical effect of quickly and visually switching the graphical interfaces of the integral layout charts into the input virtual terminal and output virtual terminal tables to check details of the input virtual terminal and output virtual terminal tables can be realized.