Creation method and apparatus of network configuration for power system

• US 6,571,152 B1
• Filed: 11/15/2000
• Issued: 05/27/2003
• Est. Priority Date: 02/24/1997
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Sawa, Toshiyuki, Onishi, Tsukasa, Furukawa, Toshiyuki
• Primary Examiner(s): Picard, Leo
• Assistant Examiner(s): Shechtman, Sean P.
• Application Number:
  US09/712,197
• Time in Patent Office: 923 Days
• Field of Search: 700/286-306, 700/900, 700/22, 700/101, 700/103, 700/173, 359/120, 329/318, 361/67, 725/79
• US Class Current: 700/286
• CPC Class Codes: H02J 2203/20 Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks
• CPC Class Codes: Y02E 40/70 Smart grids as climate change mitigation technology in the energy generation sector
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/50 Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
• CPC Class Codes: Y04S 40/20 Information technology specific aspects, e.g. CAD, simulation, modelling, system security

Abstract

One of a plurality of switches constituting a power system is set as a perceived switch, and n optional switches Bk (k=1 to n) in the on state among the other switches are changed to the off state, and n loop networks including the perceived switch are created, and each switch Ck (k=1 to n) constituting the loop networks is changed from the off state to the on state so as to create a plurality of network configuration candidates, and a power network configuration is decided on the basis of the plurality of network configuration candidates.

Claims

1. A method of creating a radial network configuration for a power system having a plurality of switches comprising:

creating loop networks by setting at least two of said plurality of switches in an on state;

creating radial network configuration candidates by setting at least two of said plurality of switches in an off state except for the switches set in the on state;

evaluating the created network configuration candidates; and

deciding a network configuration on the basis of the evaluation.

2. A method of creating a radial network configuration for a power system having a plurality of switches according to claim 1, wherein said loop network is created by setting two of said plurality of switches in the on state, and said radial network configuration candidate is created by setting two of said plurality of switches in the off state except for the switches set in the on state.

3. A method of creating a radial network configuration for a power system having a plurality of switches comprising:

a) creating a first loop network by closing a first switch which is turned off in said switches;

b) opening said first loop network by opening a second switch which is turned on in said switches in said first loop;

c) creating a second loop network by closing a third switch which is turned off in said switches; and

d) creating a radial network configuration candidate by opening a fourth switch which is turned on in said switches in said second loop network.

4. A method of creating a radial network configuration for a power system having a plurality of switches according to claim 3, wherein opening said switch creates a radial network configuration candidate.

5. A method of creating a radial network configuration for a power system having a plurality of switches according to claim 3, wherein steps a) through d) are repeated to obtain different radial network configuration candidates.

6. A method of creating a radial network configuration for a power system having a plurality of switches according to claim 3, wherein steps a) through b) are repeated to obtain different radial network configuration candidates.