公开(公告)号：US20230420937A1

公开(公告)日：2023-12-28

申请号：US18038123

申请日：2021-07-19

Applicant: Hitachi, Ltd.

Inventor： Eisuke KURODA ,  Kunihiko TSUNEDOMI ,  Daiki NISHIMURA ,  Shinya OHARA ,  Yasuyuki TADA

IPC: H02J3/00 ,  H02J3/38

CPC classification number: H02J3/003 ,  H02J3/004 ,  H02J3/0012 ,  H02J3/381 ,  H02J2203/10 ,  H02J2203/20 ,  H02J2300/20

Abstract: A power system operation plan creation assistance device and method capable of maintaining or improving system stability or economy includes an optimization target snapshot power flow determination unit that uses one or more pieces of foundational information to determine an optimization target snapshot power flow. The foundational information includes a power generation plan, a total demand prediction, a sales plan, a renewable energy prediction, a work stoppage plan, system data, and a setting value. A system manipulation variable candidate extraction unit uses the one or more pieces of foundational information and the optimization target snapshot power flow to extract a candidate for a variable for a variable manipulating the system. An optimal system configuration calculation unit uses the one or more pieces of foundational information and the system manipulation variable candidate to calculate an optimal system configuration.

公开(公告)号：US20230378806A1

公开(公告)日：2023-11-23

申请号：US18030862

申请日：2021-10-14

Applicant: Hitachi, Ltd.

Inventor： Tsubasa ICHIKAWA ,  Shinya SUENAGA ,  Yasuyuki TADA ,  Yasushi MIYATA ,  Yoshiki KUROKAWA

IPC: H02J13/00 ,  H02J3/00

CPC classification number: H02J13/00034 ,  H02J3/0073 ,  H02J3/0012

Abstract: Disclosed is a system for supporting creation of a system plan to change a configuration of a power system including a power transmission system and a power distribution system. The system stores information on a configuration of the power transmission system and information on a configuration and a load of the power distribution system. The system determines, based on the information on the configuration and the load of the power distribution system, a load accommodation capacity between power distribution substations which indicates a power supply capacity allowed to be compensated for between the power distribution substations through a configuration change of the power distribution system. The system creates a system plan proposal including a change in system configuration of the power transmission system and the power distribution system based on the load accommodation capacity. The system outputs information on the system plan proposal to an output device.

公开(公告)号：US20250149895A1

公开(公告)日：2025-05-08

申请号：US18922666

申请日：2024-10-22

Applicant: Hitachi, Ltd.

Inventor： Sayan DUTTA ,  Masanori ABE ,  Daiki NISHIMURA ,  Yasuyuki TADA

IPC: H02J3/38 ,  G05B15/02 ,  H02J3/00

Abstract: An electric power system management device generates a plan for connection of a renewable energy power supply indicating an electric power system equipment plan satisfying a predetermined constraint. A renewable energy power generation potential amount calculation unit divides a plan target region into mesh areas and analyzes region feature information related to each mesh area to calculate an electric power amount that is to be generated in each mesh area. A renewable energy power generation potential amount bus integration unit calculates a power generation potential amount of a bus when the renewable energy power supply is connected to the bus satisfying a predetermined distance standard for each mesh area, and system renewable energy power generation possible amount information indicating a generation possible amount of the system plan and an emission amount is generated by performing an optimization calculation to maximize the renewable energy power generation amount for the system plan.

公开(公告)号：US20160292802A1

公开(公告)日：2016-10-06

申请号：US15064991

申请日：2016-03-09

Applicant: Hitachi, Ltd.

Inventor： Yasuyuki TADA ,  Kazuyasu ASAKURA ,  Satoru SHIMIZU ,  Hiromichi KONNO ,  Masahiro MURAKAMI ,  Kazutaka JOE

IPC: G06Q50/16 ,  G06Q10/00 ,  G06Q10/06

CPC classification number: G06Q50/163 ,  G06Q10/0631 ,  G06Q10/20

Abstract: An asset management support system of the present invention issues a work order to an asset facility for inspection and maintenance and includes a facilities information database that stores inspection and maintenance results, a health index database that stores a state of the asset facility and surroundings around the asset facility as a health index, a comparison function that considers the health index as actual facility status of the asset facility and compares the actual facility status with a maintenance expectation effect estimated from an asset facility state at a time of installation of the asset facility or previous inspection and maintenance, an operation knowledge database that stores operation knowledge of an operator, a maintenance process update function that extracts an operation change of the inspection and maintenance and updates the facilities information database, and a work order issuing function that issues the work order for the inspection and maintenance.

Abstract translation: 本发明的资产管理支持系统向资产设备发放检查维护工作单，并且包括存储检查和维护结果的设施信息数据库，存储资产设施状态和周围环境的健康指数数据库 资产设施作为健康指标，比较功能将健康指数作为资产设施的实际设备状态，将实际设备状态与在资产设施安装时估计的维护期望效应进行比较，或 以前的检查和维护，存储操作者的操作知识的操作知识数据库，提取检查和维护的操作改变并更新设施信息数据库的维护处理更新功能以及发布工作命令的工单发布功能 用于检查和维护。