Electrical transmission or interconnection systems – Plural load circuit systems – Common conductor or return type
Patent
1978-06-26
1982-09-28
Rubinson, G. Z.
Electrical transmission or interconnection systems
Plural load circuit systems
Common conductor or return type
323253, H02J 326
Patent
active
043520260
ABSTRACT:
An apparatus which automatically balances the magnitudes of each phase current in a multi-phase power system includes electrical conductors, or phase lines, variable reactance evices, and control elements. Each phase line connects to a variable reactance device which can change the reactance of the line to thereby control the magnitude of the phase current. The variation of the reactance in one line is controlled by a control element which supplies the reactance device with a direct current converted from the alternating current of another phase line. This direct current generates a magnetic field which saturates the reactance device and thereby balances the controlled phase's current by interacting with the magnetic fields generated in the reactance device by that phase's alternating current. Total balancing is obtained by concatenating the control elements to reactance devices of all phases, i.e., one phase controls a second phase, the second controls a third, . . ., the n.sup.th -1 controls the n.sup.th, and the n.sup.th phase controls the first phase.
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ESCO Negative Sequence Compensator, ESCO Manufacturing Co., 7-10-76.
Gilbert III E. Harrison
Laney William R.
Rubinson G. Z.
Schreyer S. D.
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