Substation Interlocking and Sequence Switching Using a Digital Computer

Power systems on-line control is being studied and applied for its technical and econcmical advantages. This paper presents the work carried out with a substation model, interfaced with digital processors for data acquisition and control, to develop and test on-line strategies to control switching operations. A network representation model containing switch data is scanned to forecast the effects of any switch operation providing a comprehensive and flexible inter-locking scheme. Extension of the concept to optimal sequence switching is also presented.