US 12,113,347 B2
Arc detection device, indoor power line system, solar power generation system, and storage battery system
Kazunori Kidera, Osaka (JP); Tatsuo Koga, Osaka (JP); and Keita Kanamori, Osaka (JP)
Assigned to Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Appl. No. 17/907,847
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Mar. 3, 2021, PCT No. PCT/JP2021/008295
§ 371(c)(1), (2) Date Aug. 29, 2022,
PCT Pub. No. WO2021/182261, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 2020-041738 (JP), filed on Mar. 11, 2020.
Prior Publication US 2023/0126245 A1, Apr. 27, 2023
Int. Cl. H02H 1/00 (2006.01); G01R 15/20 (2006.01); G01R 31/40 (2020.01)
CPC H02H 1/0015 (2013.01) [G01R 15/202 (2013.01); G01R 31/40 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An arc detection device in a system including one or more power sources, a plurality of converters that adjust voltages of the one or more power sources, and a plurality of load devices, the one or more power sources and the plurality of converters being connected to each other by a first plurality of power lines, the plurality of converters and the plurality of load devices being connected to each other by a second plurality of power lines, the arc detection device comprising:
an electric current detector that includes a magnetic core through which two or more power lines extend, the two or more lines correspond to (a) at least one power line included in the first plurality of power lines and at least one power line included in the second plurality of power lines or (b) power lines included in the second plurality of power lines through which electric currents flow in opposite directions at the magnetic core, and detects combined currents flowing through the two or more power lines according to a magnetic field produced at the magnetic core; and
an arc determiner that determines, based on the combined currents detected by the electric current detector, whether an electric arc has occurred, wherein
one or more converters included in the first plurality of converters are connected to the one or more power sources, and
one or more converters included in the second plurality of converters are connected to each of the plurality of load devices.