Title:
FAST BUS TRANSFER METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/116973
Kind Code:
A3
Abstract:
Disclosed in the present invention are a fast bus transfer method and device to reduce, by transferring between a main power supply and a backup power supply, the impact on a load connected to a bus caused by a power cut. The method comprises: 1) calculating the amplitude of the voltage vector difference between the bus and the backup power supply and the phase angle difference between the bus and the backup power supply; 2) transferring the load on the bus to said backup power supply only when the amplitude is less than its limit value and the phase angle difference is less than 90°. The device comprises: a detection module; a calculation module; a comparison module; and a transfer module. By calculating the real-time residual voltage, it is unnecessary for a user to know all the details of the residual voltage characteristic, and he/she can easily achieve fast transfer simply by setting the limit of the voltage difference at the moment when a circuit breaker of the backup power supply is closed.
Inventors:
QIN LEI MING (CN)
CAO ZHEN (CN)
GU XIN BO (CN)
KRAMER DIETER (DE)
MIAO QIU GUN (CN)
CAO ZHEN (CN)
GU XIN BO (CN)
KRAMER DIETER (DE)
MIAO QIU GUN (CN)
Application Number:
PCT/EP2012/053329
Publication Date:
May 30, 2013
Filing Date:
February 28, 2012
Export Citation:
Assignee:
SIEMENS AG (DE)
QIN LEI MING (CN)
CAO ZHEN (CN)
GU XIN BO (CN)
KRAMER DIETER (DE)
MIAO QIU GUN (CN)
QIN LEI MING (CN)
CAO ZHEN (CN)
GU XIN BO (CN)
KRAMER DIETER (DE)
MIAO QIU GUN (CN)
International Classes:
H02J9/06
Domestic Patent References:
| WO1993006644A1 | 1993-04-01 |
Foreign References:
| DE2108307A1 | 1972-08-31 |
Other References:
"IEEE Design Guide for Electric Power Service Systems for Generating Stations;IEEE Std 666-2007 (Revision of IEEE Std 666-1991)", IEEE STANDARD, IEEE, PISCATAWAY, NJ, USA, 4 May 2007 (2007-05-04), pages 1 - 350, XP017694810, ISBN: 978-0-7381-4987-5
BOTTRELL ET AL: "Fast Bus-Transfer Techniques for maintaining full plant production", RECORD OF -CONFERENCE PAPERS. INDUSTRIAL APPLICATION SOCIETY, 36TH ANNUAL PETROLEUM AND CHEMICAL INDUSTRY CONFERENCE (CAT NO. 89CH2777-1) 1989 IEEE, 1989, NY, USA, pages 229 - 237, XP002694185, DOI: 10.1109/pcicon.1989.77889
YALLA M V V S: "Design of a High-Speed Motor Bus Transfer System", IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 46, no. 2, pages 612 - 619, XP011301404, ISSN: 0093-9994
BOTTRELL ET AL: "Fast Bus-Transfer Techniques for maintaining full plant production", RECORD OF -CONFERENCE PAPERS. INDUSTRIAL APPLICATION SOCIETY, 36TH ANNUAL PETROLEUM AND CHEMICAL INDUSTRY CONFERENCE (CAT NO. 89CH2777-1) 1989 IEEE, 1989, NY, USA, pages 229 - 237, XP002694185, DOI: 10.1109/pcicon.1989.77889
YALLA M V V S: "Design of a High-Speed Motor Bus Transfer System", IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 46, no. 2, pages 612 - 619, XP011301404, ISSN: 0093-9994
Attorney, Agent or Firm:
SIEMENS AKTIENGESELLSCHAFT (München, DE)
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