Title:
POWER CONDITIONER SYSTEM, POWER SYSTEM COMPRISING SAME, AND FAULT LOCATION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/111292
Kind Code:
A1
Abstract:
This power conditioner system comprises an inverter circuit connected to a power system by a power-transmission line, an ammeter that measures the current output from the inverter circuit, and a control device that is connected to the ammeter and controls the inverter circuit. Upon receiving a prescribed input signal determined in advance, the control device controls the inverter circuit so as to make the same output, to the power-transmission line, a first AC voltage signal having a first frequency and a first voltage value and a second AC voltage signal having a second frequency and a second voltage value. The control device acquires a first inverter circuit output current corresponding to the first AC voltage signal measured by the ammeter and a second inverter circuit output current corresponding to the second AC voltage signal measured by the ammeter. The control device calculates a DC resistance and inductance on the basis of a first impedance, second impedance, first complex number, and second complex number.
Inventors:
NAGASAKI HIROMI (JP)
IIJIMA YUKIHISA (JP)
UMENO CHIEKO (JP)
IIJIMA YUKIHISA (JP)
UMENO CHIEKO (JP)
Application Number:
PCT/JP2017/043437
Publication Date:
June 13, 2019
Filing Date:
December 04, 2017
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELEC IND (JP)
International Classes:
G01R31/08
Foreign References:
| JPH0399377U | 1991-10-17 | |||
| JP2017101931A | 2017-06-08 | |||
| JP2017161483A | 2017-09-14 | |||
| JP2003255012A | 2003-09-10 | |||
| JPS5312368A | 1978-02-03 | |||
| JP2002162431A | 2002-06-07 |
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (JP)
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