Creation method and apparatus of network configuration for power system

• US 6,181,984 B1
• Filed: 02/20/1998
• Issued: 01/30/2001
• Est. Priority Date: 02/24/1997
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Furukawa, Toshiyuki, Sawa, Toshiyuki, Onishi, Tsukasa
• Primary Examiner(s): Grant, William
• Assistant Examiner(s): CABRERA, ZOILA E
• Application Number:
  US09/027,408
• Time in Patent Office: 1,075 Days
• Field of Search: 700/286, 700/293, 700/294, 700/295
• 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 network configuration for a power system comprising:

setting one of a plurality of switches constituting a power system as a perceived switch, and n optional switches Bk (k=1 to n) in the on state,

creating n loop networks including the said perceived switch,

changing each of a plurality of switches Ck (k=1 to n) in said loops from the off state to the on state so as to create a plurality of network configuration candidates, and

deciding on a power network configuration on the basis of said plurality of network configuration candidates.

2. A method of creating the network configuration for the power system according to claim 1, wherein said perceived switch is selected using at least one of the conditions of a power transmission loss maximum facility, a power transmission loss rate maximum facility, a voltage violation facility the order among the violation facilities being decided by the importance, a voltage violation maximum facility, a voltage violation rate maximum facility, a power flow restriction violation facility, a power flow restriction violation maximum facility, a power flow restriction violation rate maximum facility, an important facility order, and an open facility order which is an important facility order of open facilities.

3. A method of creating the network configuration for the power system according to claim 1, wherein said plurality of network configuration candidates are evaluated on the basis of a predetermined evaluation standard and said power network configuration is decided.

4. An apparatus for creating a network configuration for a power system comprising:

a data base storing status data including a connection status of a facility of a power system,

network configuration candidate creation means for changing said connection status of said facility of said power system on the basis of said status data of said data base and creating a plurality of network configuration candidates, and

network configuration evaluation means for evaluating said network configuration candidates created by said network configuration candidate creation means and deciding said power network configuration,

said network configuration candidate creation means;

setting one of a plurality of switches of said power system as a perceived switch,

changing n optional switches Bk (k=1 to n) in the on state among the other switches to the off state,

creating n loop networks including said perceived switch, and

changing each of a plurality of switchs Ck (k=1 to n) in said loop networks from the off state to the on state so as to create a plurality of network configuration candidates.

5. An apparatus for creating the network configuration for the power system according to claim 4, wherein said perceived switch is selected using at least one of the conditions of a power transmission loss maximum facility, a power transmission loss rate maximum facility, a voltage violation facility the order among the violation facilities being decided by the importance, a voltage violation maximum facility, a voltage violation rate maximum facility, a power flow restriction violation facility, a power flow restriction violation maximum facility, a power flow restriction violation rate maximum facility, an important facility order, and an open facility order which is an important facility order of open facilities.