CONNECTION PHASE ESTIMATION DEVICE, CONNECTION PHASE ESTIMATION PROGRAM AND CONNECTION PHASE ESTIMATION METHOD

Japanese Patent JP2022035071

A

To estimate a connection phase of a transformer more accurately.SOLUTION: A connection phase estimation device acquires first line voltage data indicating line voltage between a first phase and a second phase of a three-phase AC output by a substation, second line voltage data indicating a line voltage between the second phase and a third phase of the three-phase AC output by the substation, third line voltage data indicating a line voltage data between the third phase and the first phase of the three-phase AC output by the substation, and transformer voltage data indicating a line voltage of a single-phase transformer, and estimates a connection phase to which the single-phase transformer is connected, among the first phase, second phase, and third phase of the three-phase AC output by the substation, based on at least one of correlation between the line voltage indicated by the first line voltage data and the line voltage indicated by the transformer voltage data, correlation between the line voltage indicated by the second line voltage data and the line voltage indicated by the transformer voltage data, and correlation between the line voltage indicated by the third line voltage data and the line voltage indicated by the transformer voltage data.SELECTED DRAWING: Figure 2

SUGANO NORIHIRO
MABUCHI HIROYUKI

JP2020139139A

March 04, 2022

August 20, 2020

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TOKYO ELECTRIC POWER CO HOLDINGS INC

G01R29/18; H02J3/26; H02J3/38; H02J13/00

Yasushi Matsunuma
Junichi Kobayashi
Kazunori Onami
Masahisa Matsumoto
Hiroyuki Matsumoto

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