Development of the object-oriented software for setting and coordination and fault simulation of electric networks

Automatic and graphical relaying protection setting and calculation of faults in electric networks are the certain trend of power system development. In this paper,the software NSW developed by the authors,which is a graphical system for relaying protection setting and electric network fault simulation based on the technology of object-oriented programming(OOP) and Visual (C++, is introduced). The whole structure,compositive modules and main technologies of the NSW are discussed,and its characteristics are expatiated. Practical application instances are introduced briefly.