Title:
INDIVIDUAL OPERATION DETECTION DEVICE FOR DISTRIBUTED POWER SUPPLY
Document Type and Number:
Japanese Patent JP3921235
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a device capable of accurately measuring admittance or the like of an injection degree by increasing an SN ratio to background noise of voltage and current by injection current even when the injection current is made reduced, and accurately detecting individual operation of a distributed power supply.
SOLUTION: This individual operation detection device includes a current injection device 32 and a supply stop detection device 42 which injects an injection current Jm of the injection degree m. The supply stop detection device 42 includes a removal device which removes at least a basic wave voltage element and a basic wave current element of a distribution system from a measured voltage Vt and a measured current It, respectively, an extraction device which extracts and outputs the voltage and the current with the injection degree m from the outputted voltage and current, respectively, and a computation device which calculates the admittance of the injection degree m using the outputted voltage and current.
Inventors:
Fumio Yamamoto
Soji Nishimura
Natsuda Ikusen
Soji Nishimura
Natsuda Ikusen
Application Number:
JP2004211947A
Publication Date:
May 30, 2007
Filing Date:
July 20, 2004
Export Citation:
Assignee:
Kansai Electric Power Co., Inc.
Nissin Electric Co., Ltd.
Nissin Electric Co., Ltd.
International Classes:
H02J3/38
Domestic Patent References:
| JP2001045666A | ||||
| JP5299972A | ||||
| JP7254841A | ||||
| JP2001258161A | ||||
| JP2000004539A | ||||
| JP9098539A |
Attorney, Agent or Firm:
Keiji Yamamoto