Title :
Line Discharge by Potential Transformers
Author_Institution :
General Electric Company
fDate :
4/1/1969 12:00:00 AM
Abstract :
The isolation of a section of a high-voltage transmission line or cable may leave the section charged to a voltage in the order of operating values. Upon automatic reclosing, dangerous transient overvoltages which may exceed tolerable overvoltage factors could be produced unless the isolated section is discharged to a small fraction of operating voltage. Of all the means presently available that act to discharge the section, including shunt devices and circuit- breaker resistors, the electromagnetic potential transformers (under conditions described in this paper) could be the most effective. A theoretical analysis of the discharge phenomena which permits determination of instantaneous voltage as a function of time is included.
Keywords :
Arresters; Inductors; Power cables; Power system transients; Power transmission lines; Reactive power; Resistors; Shunt (electrical); Surge protection; Voltage transformers;
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
DOI :
10.1109/TPAS.1969.292448