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Patent Searching and Data


Title:
POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/044774
Kind Code:
A1
Abstract:
The purpose of the present invention is to implement both an uninterruptible power supply function and a load leveling function by using the same distributed energy resources, while satisfying FRT requirements. Provided is a power supply system comprising: distributed energy resources 2 connected to a power line L1 for feeding power from a commercial power system 10 to an important load 30; a switch 3 provided in the power line L1 on the commercial power system 10 side with respect to the distributed energy resources 2, for opening and closing the power line L1; an impedance element 4 connected in parallel to the switch 3 in the power line L1; a voltage detection unit 5 for detecting a voltage on the commercial power system 10 side with respect to the switch 3; and a control unit 6 for releasing, when a voltage detected by the voltage detection unit 5 becomes equal to or lower than a set point, the switch 3 such that the distributed energy resources 2 and the commercial power system 10 are connected through the impedance element 4. In the state in which the distributed energy resources 2 and the commercial power system 10 are connected through the impedance element 4, the distributed energy resources 2 continue operation including reverse power flow.

Inventors:
UDA, Satoshi (47, Umezu Takase-cho, Ukyo-ku, Kyoto-sh, Kyoto 86, 〒6158686, JP)
KAWASAKI, Yoshinori (47, Umezu Takase-cho, Ukyo-ku, Kyoto-sh, Kyoto 86, 〒6158686, JP)
NISHIMURA, Shoji (47, Umezu Takase-cho, Ukyo-ku, Kyoto-sh, Kyoto 86, 〒6158686, JP)
Application Number:
JP2018/031601
Publication Date:
March 07, 2019
Filing Date:
August 27, 2018
Export Citation:
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Assignee:
NISSIN ELECTRIC CO., LTD. (47 Umezu Takase-cho, Ukyo-ku Kyoto-sh, Kyoto 86, 〒6158686, JP)
International Classes:
H02J3/38; H02J3/24; H02J9/06
Foreign References:
JP2017055508A2017-03-16
JP2016208586A2016-12-08
JP2016059168A2016-04-21
JPS5066130U1975-06-14
JP2000184602A2000-06-30
Attorney, Agent or Firm:
NISHIMURA, Ryuhei (Yasaka Karasuma Gosho-minami Building, 3rd Floor 280, Makieya-cho, Nakagyo-ku, Kyoto-sh, Kyoto 57, 〒6040857, JP)
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