Title:
TEMPERATURE RISE DETECTION METHOD, TRANSFORMER, AND TRANSFORMATION DEVICE
Document Type and Number:
Japanese Patent JP2022075122
Kind Code:
A
Abstract:
To provide a temperature rise detection method, a transformer, and a transformation device that can detect the temperature rise of the transformer while suppressing the increase in cost and iron loss.SOLUTION: In a temperature rise detection method, a transformer 20 including a winding and an iron core using a grain-oriented electrical steel sheet detects a secondary voltage vs, a primary current ip, and a secondary current is, and detects a temperature rise in the transformer 20 on the basis of an increase in an excitation current ie within the range of 5% to 28% when a period of the half cycle of the secondary voltage vs is expressed as 0% to 100% starting from the time point when the secondary voltage vs becomes 0V for the excitation current ie obtained by subtracting the secondary current is converted to the primary side from the primary current ip.SELECTED DRAWING: Figure 2
Inventors:
MIZOGAMI MASAHITO
Application Number:
JP2020185699A
Publication Date:
May 18, 2022
Filing Date:
November 06, 2020
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
H01F41/00; H01F27/245; H01F27/26
Attorney, Agent or Firm:
Mitsuo Kuribayashi
Nobuhiro Nitta
Kuribayashi Kazuki
Atsushi Miura
Nobuhiro Nitta
Kuribayashi Kazuki
Atsushi Miura