Apparatus and method for reducing neutral line current using...

Details Apparatus and method for reducing neutral line current using... Apparatus and method for reducing neutral line current using...

2007-09-28

2010-06-08

Paladini, Albert W (Department: 2836)

Electrical transmission or interconnection systems

Plural load circuit systems

Common conductor or return type

C307S013000, C361S048000, C361S061000, C361S063000, C361S076000

Reexamination Certificate

active

07732940

ABSTRACT:
An apparatus for reducing a neutral current using a load switching method in accordance with the present invention includes a phase current detection unit for detecting a phase current in each of a top stage power line and a bottom stage power line, a load switching unit for changing an arrangement of a load connected each phase of at least one among the top stage power line and the bottom stage power line and a control unit for controlling the load switching unit so as to compare a strength of the detected phase current of the top stage power line with a strength of the detected phase current of the bottom stage power line and to change the arrangement of the load connected to each phase of at least one among the top stage power line and the bottom stage power line according to the comparison result.

REFERENCES:
patent: 4406008 (1983-09-01), Konig et al.
patent: 6018203 (2000-01-01), David et al.
patent: 7242110 (2007-07-01), Matsumoto et al.
patent: 1986-266020 (1988-05-01), None
patent: 2000-514279 (2000-10-01), None
patent: 2004-312848 (2004-11-01), None
patent: 20-1995-004479 (1995-12-01), None
Tsai-Hsiang Chen et al., Optimal Phase Arrangement of Distributon Transformers Connected to a Primary Feeder for System Unbalance Improvement and Loss Reduction Using a Genetic Algorithm, IEEE Transactions on Power Systemns, vol. 15, NP.3, Aug. 2000, pp. 994-1000.

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