Device designed for the study of the operation of electrical power systems

Claim 1

A DEVICE FOR GRAPHICAL ANALYSIS OF THE CONDITIONS OF AN ELECTRICAL POWER SYSTEM THROUGH ANALYSIS FO CONDITIONS MEASURED AT EACH JUNCTIONS POINT THEREOF, SAID DEVICE COMPRISING AN ARTICULATED SERIES OF RULERS EACH CORRESPONDING TO A POWER GENERATOR CONNECTED TO THE JUNCTION POINT, EACH RULER BEING ADJUSTABLE TO A LENGTH REPRESENTING THE SHORT-CIRCUIT CURRENT OF THE GENERATOR WHICH IT CORRESPONDS, CALIBRATED PIVOT MEANS FOR CONNECTING SAID RULERS OPERATIVE TO ENABLE ADJUSTMENT OF EACH RULER TO AN ANGLE RESPRESENTING THE INTERNAL VOLTAGE PHASE OF ITS CORRESPONDING GENERATOR, AN AUXILIARY RULER FIX TO SAID PIVOT MEANS EXTENDING RADIALLY THEREFROM FOR DEFINING ADDITIONAL REPRESENTATIONS OF CONDITIONS OF SAID JUNCTION POINT, SLIDABLE AXIAL PINS POSITIONED AT SAID PIVOT MEANS, AND GRAPHICAL INDICATING MEANS TO WHICH SAID SERIES, OF ARTICULATED RULERS AND SAID AUXILIARY RULERS ARE ATTACHABLE THROUGH SAID SLIDABLE AXIAL PINS TO BE POSITIONABLE RELATIVE THERETO, AND RELATIVE POSITIONING OPERATIVE TO DEFINE POINTS OF INTERSECTION THEREBETWEEN IN A MANNER WHEREBY SAID GRAPHICAL INDICATING MEANS INDICATES THE VOLTAGE, ACTIVE AND REACTIVE CURRENT, POWER AND PHASE ANGLE AT THE JUNCTION POINT.

Claim 2

A DEVICE FOR GRAPHICAL ANALYSIS OF THE CONDITIONS OF AN ELECTRICAL POWER SYSTEM THROUGH ANALYSIS FO CONDITIONS MEASURED AT EACH JUNCTIONS POINT THEREOF, SAID DEVICE COMPRISING AN ARTICULATED SERIES OF RULERS EACH CORRESPONDING TO A POWER GENERATOR CONNECTED TO THE JUNCTION POINT, EACH RULER BEING ADJUSTABLE TO A LENGTH REPRESENTING THE SHORT-CIRCUIT CURRENT OF THE GENERATOR WHICH IT CORRESPONDS, CALIBRATED PIVOT MEANS FOR CONNECTING SAID RULERS OPERATIVE TO ENABLE ADJUSTMENT OF EACH RULER TO AN ANGLE RESPRESENTING THE INTERNAL VOLTAGE PHASE OF ITS CORRESPONDING GENERATOR, AN AUXILIARY RULER FIX TO SAID PIVOT MEANS EXTENDING RADIALLY THEREFROM FOR DEFINING ADDITIONAL REPRESENTATIONS OF CONDITIONS OF SAID JUNCTION POINT, SLIDABLE AXIAL PINS POSITIONED AT SAID PIVOT MEANS, AND GRAPHICAL INDICATING MEANS TO WHICH SAID SERIES, OF ARTICULATED RULERS AND SAID AUXILIARY RULERS ARE ATTACHABLE THROUGH SAID SLIDABLE AXIAL PINS TO BE POSITIONABLE RELATIVE THERETO, AND RELATIVE POSITIONING OPERATIVE TO DEFINE POINTS OF INTERSECTION THEREBETWEEN IN A MANNER WHEREBY SAID GRAPHICAL INDICATING MEANS INDICATES THE VOLTAGE, ACTIVE AND REACTIVE CURRENT, POWER AND PHASE ANGLE AT THE JUNCTION POINT.