Constant voltage source for operation of series capacitor bank protective equipment

Claim 1

IN COMBINATION: AN ALTERNATING CURRENT TRANSMISSION LINE HAVING A SUBSTANTIALLY VARYING LINE CURRENT; A CAPACITOR ARRANGEMENT IN ELECTRICAL SERIES WITH SAID TRANSMISSION LINE FOR COMPENSATING FOR INDUCTIVE REACTANCE IN SAID TRANSMISSION LINE; ELECTRICALLY OPERATED CIRCUIT MEANS FOR ESTABLISHING A BY-PASS CURRENT PATH WHICH SHUNTS OUT SAID CAPACITOR ARRANGEMENT IN RESPONSE TO PREDETERMINED CIRCUIT CONDITIONS; AND AN ELECTRICAL SOURCE ADAPTED TO OBTAIN A COMPARATIVELY CONSTANT POTENTIAL FROM THE SUBSTANTIALLY VARYING LINE CURRENT OF SAID TRANSMISSION LINE FOR THE OPERATION OF SAID CIRCUIT MEANS, SAID ELECTRICAL SOURCE COMPRISING; A CURRENT TRANSFORMER INCLUDING A PRIMARY WINDING ENERGIZED BY SAID LINE CURRENT, A CORE MEANS SATURABLE BY A LOW LEVEL OF SAID LINE CURRENT, AND A SECONDARY WINDING ELECTRICALLY CONNECTED TO SAID CIRCUIT MEANS, SAID SECONDARY WINDING PRESENTING AN OUTPUT POTENTIAL HAVING A MAXIMUM VARIATION IN MAGNITUDE WITHIN A 1:2 RATIO CORRESPONDING TO A VARIATION IN TRANSMISSION LINE CURRENT OF UP TO AT LEAST 1:50.