# US 11,379,091 B2 · Operation support device and operation support method

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- Number: US 11,379,091 B2
- Document ID: US11379091B2
- Status: Granted
- Kind: B2
- Application number: 16/606,977
- Filed: 2018-04-18
- Published: 2021-04-08
- Granted: 2022-07-05
- Earliest claimed: 2017-04-27
- Assignees: Hitachi, Ltd.
- Applicants: Hitachi, Ltd.
- Inventors: Nao Saito; Kenta Kirihara; Masahiro Yatsu
- Web page: https://patentgrep.com/patent/US11379091B2

## CPC

- H02J 3/0014: for preventing or reducing power oscillations in networks
- G06F 3/0482: Interaction with lists of selectable items, e.g. menus
- G06F 3/0484: for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
- G06Q 50/06: Energy or water supply
- G09B 9/00: Simulators for teaching or training purposes (for the use of weapons F41; computing aspects G06; {protocols for games, networked simulations or virtual reality H04L67/131})
- H02J 3/00: Circuit arrangements for AC mains or AC distribution networks
- H02J 3/00144: {using phasor measuring units [PMU]}
- H02J 13/00: Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network
- H02J 2103/30: Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks
- Y04S 10/22: Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G09B: EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS (devices for psychotechnics or for testing reaction times A61B5/16; games, sports, amusements A63; projectors, projector screens G03B)
- Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS

## Abstract

An operation support device is provided with: a similarity determination unit for determining the similarity between actual measured data and simulated data, said actual measured data being measured in an operation target after performing control on the operation target on the basis of, among a plurality of control candidates managed using a control candidate table, a control candidate corresponding to an event having occurred in the operation target, said simulated data being obtained by a simulation assuming the system state of the operation target after performing control on the operation target on the basis of system data indicating the state of the operation target before performing the control on the operation target; and a control candidate table update unit for updating the control candidate table in accordance with the determination result of the similarity determination unit.

## Claims

### Claim 1

An operation support device including a support function for presenting a control candidate table for managing a plurality of control candidates to an operator, the operation support device comprising:
a similarity determination unit, implemented by a processor, that determines a similarity between actual measured data and simulated data, the actual measured data being measured in an operation target after control for the operation target is executed based on, among the plurality of control candidates, a control candidate corresponding to an event occurred in the operation target, and the simulated data being obtained by a simulation assuming a system state of the operation target after the control for the operation target is executed based on system data indicating a state of the operation target before the control for the operation target is executed; and
a control candidate table update unit, implemented by a processor, that updates the control candidate table in accordance with a determination result of the similarity determination unit;
wherein the similarity determination unit includes:
a first feature quantity extraction unit, implemented by a processor, that extracts a feature quantity of the event from the actual measured data;
a second feature quantity extraction unit, implemented by a processor, that extracts a feature quantity of the event from the simulated data; and
a feature quantity comparison unit, implemented by a processor, that compares an extraction result of the first feature quantity extraction unit and an extraction result of the second feature quantity extraction unit based on a similarity threshold to determine a similarity between the respective extraction results.

### Claim 2 (depends on 1)

The operation support device according to claim 1, further comprising: a control candidate input unit that inputs a control candidate for learning in the simulation, which is a control candidate managed by the control candidate table.

### Claim 3 (depends on 1)

The operation support device according claim 1, wherein the operation target is a power system.

### Claim 4

An operation support device including a support function for presenting a control candidate table for managing a plurality of control candidates to an operator, the operation support device comprising:
a similarity determination unit, implemented by a processor, that determines a similarity between actual measured data and simulated data, the actual measured data being measured in an operation target after control for the operation target is executed based on, among the plurality of control candidates, a control candidate corresponding to an event occurred in the operation target, and the simulated data being obtained by a simulation assuming a system state of the operation target after the control for the operation target is executed based on system data indicating a state of the operation target before the control for the operation target is executed;
a control candidate table update unit, implemented by a processor, that updates the control candidate table in accordance with a determination result of the similarity determination unit:
a system state analysis unit, implemented by a processor, that executes the simulation assuming the system state of the operation target after the control for the operation target is executed based on the system data indicating the state of the operation target before the control for the operation target is executed, and creates an analysis result as the simulated data; and
a stability determination unit, implemented by a processor, that determines priority of each control candidate managed by the control candidate table based on the simulated data created by the system state analysis unit, wherein the control candidate table update unit updates the priority of each control candidate managed by the control candidate table in accordance with a determination result of the stability determination unit.

### Claim 5 (depends on 4)

The operation support device according to claim 4, wherein the stability determination unit includes: a data division unit that divides a simulation result belonging to the simulated data created by the system state analysis unit, for each control candidate managed by the control candidate table; a plurality of stability evaluation units that evaluate stability of each control candidate based on a simulation result of each control candidate obtained by dividing in the data division unit; and a stability comparison unit that compares respective stability evaluation results of the plurality of stability evaluation units to determine the priority of the respective control candidates.

### Claim 6

An operation support method having a support function for presenting a control candidate table for managing a plurality of control candidates to an operator, the operation support method comprising:
a similarity determining step of determining a similarity between actual measured data and simulated data, the actual measured data being measured in an operation target after control for the operation target is executed based on, among the plurality of control candidates, a control candidate corresponding to an event occurred in the operation target, and the simulated data being obtained by a simulation assuming a system state of the operation target after the control for the operation target is executed based on system data indicating a state of the operation target before the control for the operation target is executed; and
a control candidate table updating step of updating the control candidate table in accordance with a determination result in the similarity determining step;
wherein the similarity determining step includes:
a first feature quantity extracting step of extracting a feature quantity of the event from the actual measured data;
a second feature quantity extracting step of extracting a feature quantity of the event from the simulated data; and
a feature quantity comparing step of comparing an extraction result in the first feature quantity extracting step and an extraction result in the second feature quantity extracting step based on a similarity threshold to determine a similarity of the respective extraction results.

### Claim 7 (depends on 6)

The operation support method according to claim 6, further comprising: a control candidate inputting step of inputting a control candidate for learning in the simulation, which is a control candidate managed by the control candidate table.

### Claim 8 (depends on 6)

The operation support method according claim 6, wherein the operation target is a power system.

### Claim 9

An operation support method having a support function for presenting a control candidate table for managing a plurality of control candidates to an operator, the operation support method comprising:
a similarity determining step of determining a similarity between actual measured data and simulated data, the actual measured data being measured in an operation target after control for the operation target is executed based on, among the plurality of control candidates, a control candidate corresponding to an event occurred in the operation target, and the simulated data being obtained by a simulation assuming a system state of the operation target after the control for the operation target is executed based on system data indicating a state of the operation target before the control for the operation target is executed;
a control candidate table updating step of updating the control candidate table in accordance with a determination result in the similarity determining step;
a system state analyzing step of executing the simulation assuming the system state of the operation target after the control for the operation target is executed based on the system data indicating the state of the operation target before the control for the operation target is executed, and creating an analysis result as the simulated data; and
a stability determining step of determining priority of each control candidate managed by the control candidate table based on the simulated data created in the system state analyzing step, wherein in the control candidate table updating step, the priority of each control candidate managed by the control candidate table is updated in accordance with a determination result in the stability determining step.

### Claim 10 (depends on 9)

The operation support method according to claim 9, wherein the stability determining step includes: a data dividing step of dividing a simulation result belonging to the simulated data created in the system state analyzing step, for each control candidate managed by the control candidate table; and a stability evaluating step of evaluating stability of each control candidate based on a simulation result of each control candidate obtained by dividing in the data dividing step; and a stability comparing step of comparing respective stability evaluation results of the stability evaluating step to determine the priority of the respective control candidates.