Title:
POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/021925
Kind Code:
A1
Abstract:
The present invention, which satisfies FRT requirements and reliably supplies power to a load even when there is a system abnormality, is provided with: a distributed power supply 2 connected to a power line L1 for feeding power from a commercial power system 10 to an important load 30; an opening/closing switch 3 that is on the power line L1 and provided closer to the commercial power system than the distributed power supply 2; an impedance element 4 connected in parallel to the opening/closing switch 3; a system abnormality detection unit 5 that detects abnormalities in the commercial power system 10; and a switch control unit 6 that opens the opening/closing switch 3 and connects the distributed power supply 2 and the commercial power system 10 via the impedance element 4 when an abnormality in the commercial power system 10 is detected. While the distributed power supply 2 and the commercial power system 10 are connected via the impedance element 4, the distributed power supply 2 continues an operation including reverse power flow. The distributed power supply 2 has a rotary power generation device 23 and an energy storage device 22. The energy storage device 22 has: an energy storage unit 221; a bi-directional power convertor 222 that charges/discharges the energy storage unit 221; and a convertor control unit 223 which controls the bi-directional power convertor 222 and performs an operation simulating the inertia of the rotary power generation device 23.
Inventors:
KASHIHARA HIRONORI (JP)
Application Number:
PCT/JP2019/024661
Publication Date:
January 30, 2020
Filing Date:
June 21, 2019
Export Citation:
Assignee:
NISSIN ELECTRIC CO LTD (JP)
International Classes:
H02J3/32; H02J3/38; H02J3/46
Foreign References:
| JP6338131B1 | 2018-06-06 | |||
| JP2017070130A | 2017-04-06 | |||
| JP2016226279A | 2016-12-28 | |||
| JP3402886B2 | 2003-05-06 |
Other References:
See also references of EP 3832831A4
Attorney, Agent or Firm:
NISHIMURA, Ryuhei (JP)
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