Restoration decision-making assistance apparatus and restoration decision-making assistance method

Patent metadata

Field	Value
Publication number	US-2025226654-A1
Application number	US-202218699586-A
Country	US
Kind code	A1
Filing date	Oct 6, 2022
Priority date	Oct 26, 2021
Publication date	Jul 10, 2025
Grant date	—

Abstract

A restoration decision-making assistance apparatus and method are capable of restoring customers of a power outage by planning an isolated operation at the time of power outage restoration of a power distribution system and preparing a restoration work plan in consideration of the plan. A power system section, disconnected due to a power system accident, is connected to a power system again. A planning unit defines a switch section divided by adjacent switches for the disconnected section, and prepares an isolated operation plan with at least a switch section which includes a distributed power source therein or in which a power source vehicle is arranged as an isolated operation section. An isolated operation planning unit prepares an operation plan with a switch section in which a system accident is present as an isolated operation section and a restoration work plan is prepared for the isolated operation section.

First claim

1 . A restoration decision-making assistance apparatus for connecting a power system section disconnected due to a power system accident to a power system again, the restoration decision-making assistance apparatus comprising:
an isolated operation planning unit configured to define a switch section divided by adjacent switches for the disconnected power system section, and to prepare an isolated operation plan with at least a switch section which includes a distributed power source therein or in which a power source vehicle is arranged as an isolated operation section; and a restoration work planning unit configured to prepare a restoration work plan for a switch section in which an accident or a damaged facility is present in the power system.

2 . The restoration decision-making assistance apparatus according to claim 1 , wherein
the isolated operation planning unit prepares an isolated operation plan for presenting a switch section in which isolated operation is allowed to be performed after restoration work of an accident or damaged facility, and the restoration work planning unit prepares a restoration work plan of an accident or damaged facility that minimizes power outage damage, a restoration time step of each switch section, and a power restoration means thereof based on the isolated operation plan.

3 . The restoration decision-making assistance apparatus according to claim 1 , wherein the isolated operation planning unit prepares a first isolated operation plan indicating a switch section in which an isolated operation is allowed to be performed immediately and a second isolated operation plan indicating a switch section in which an isolated operation is allowed to be performed after restoration work.

4 . The restoration decision-making assistance apparatus according to claim 2 , wherein the restoration work planning unit prepares a restoration work plan for an accident or a damaged facility that minimizes power outage damage based on the isolated operation plan.

5 . The restoration decision-making assistance apparatus according to claim 2 , wherein the restoration work planning unit prepares a restoration time step of each switch section and a power restoration means thereof based on the isolated operation plan.

6 . The restoration decision-making assistance apparatus according to claim 4 , wherein the restoration work planning unit prepares a restoration work plan by optimization calculation to minimize power outage damage.

7 . The restoration decision-making assistance apparatus according to claim 1 , further comprising a screen output unit configured to output an isolated operation plan prepared by the isolated operation planning unit and a restoration work plan prepared by the restoration work planning unit to a screen.

8 . The restoration decision-making assistance apparatus according to claim 7 , wherein the screen output unit outputs, to a screen, a first isolated operation plan indicating a switch section in which an isolated operation is allowed to be performed immediately prepared by the isolated operation planning unit, and a second isolated operation plan indicating a switch section in which an isolated operation is allowed to be performed after restoration work.

9 . The restoration decision-making assistance apparatus according to claim 7 , wherein the screen output unit outputs a restoration work plan prepared by the restoration work planning unit, a restoration time step of each switch section, and a power restoration means thereof to a screen.

10 . The restoration decision-making assistance apparatus according to claim 9 , wherein the screen output unit outputs a restoration work plan prepared by the restoration work planning unit to a screen.

11 . The restoration decision-making assistance apparatus according to claim 9 , wherein the screen output unit outputs a restoration time step of each switch section and a power restoration means thereof prepared by the restoration work planning unit to a screen.

12 . A restoration decision-making assistance method that is implemented by using a computer and connects a power system section disconnected due to an accident of a power system to the power system again, the restoration decision-making assistance method comprising:
defining a switch section divided by adjacent switches for the disconnected power system section, and preparing an isolated operation plan with at least a switch section having a distributed power source therein or a switch section in which a power source vehicle is arranged as an isolated operation section; and preparing a restoration work plan for a switch section in which an accident or damaged facility is present in the power system.

13 . The restoration decision-making assistance method according to claim 12 , wherein the isolated operation plan includes a first isolated operation plan indicating a switch section in which an isolated operation is allowed to be performed immediately and a second isolated operation plan indicating a switch section in which an isolated operation is allowed to be performed after restoration work, and a restoration work plan including a procedure and a resource in restoration work is prepared based on the second isolated operation plan.

14 . The restoration decision-making assistance method according to claim 12 , further comprising, according to the isolated operation plan, in consideration of a load capacity of a switch section in which power outage restoration is possible due to interconnection with an isolated operation and a power system or an isolated operation section, and a required time required for the switch section to be restored from power outage, preparing a restoration plan that minimizes a sum of a product of the load capacity and the required time for all switch sections.

Assignees

• Hitachi Ltd

Inventors

• Yamamoto Masashi
• Ono Tetsushi
• Tomobe Osamu
• Kawamura Tsutomu

Classifications

• G06Q10/0637

  Strategic management or analysis, e.g. setting a goal or target of an organisation; Planning actions based on goals; Analysis or evaluation of effectiveness of goals · CPC title

• H02J3/0012 Primary

  characterised by the contingency detection means in AC networks, e.g. using phasor measurement units [PMU], synchrophasors or contingency analysis · CPC title

• G06Q50/06

  Energy or water supply · CPC title

• H02J3/38

  Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel · CPC title

• H02J3/00

  Circuit arrangements for AC mains or AC distribution networks · CPC title