US 2003/0144803 A1Published application

Substation system

AssigneeHitachi, Ltd.

InventorsTakayuki Wakida, Takashi Aihara, Shigeru Miyazawa, Yoshimune Matsuyama

Life of this patent

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Abstract

To simplify the structure, realize autonomous automation, digitalize data, and effectively use data by utilizing a network. A measuring card for measuring voltage and current according to values detected by the state detector that detects voltage and current of the system, a protection card for performing a protective arithmetical operation according to values detected by the state detector and outputting a protection command to a controller, and a control card for performing a protective arithmetical operation according to values detected by the state detector and outputting a control command to a controller are integrated within an on-site cubicle, wherein the protection card, measuring card, and control card are connected to the substation monitoring and controlling device via a serial bus which is shared by those cards, and data is sent and received between those cards and the monitoring and controlling device via the serial bus.

Claims8

Dependent claims

A substation system comprising a state detector for detecting the state of monitored objects connected to a power system;

a controller for controlling controlled objects connected to said power system according to control information;
a monitor-information creating device for exchanging information with said state detector using digital signals as media and also creating information about the state of said monitored objects;
and a control-information creating device for creating control information for controlling said controller, converting the created control information along with received control information into digital signals and transmitting the signals to said controller, wherein said monitor-information creating device and said control-information creating device are connected to a monitoring and controlling device for collecting information about the state of said monitored objects and outputting control information for controlling said controlled objects via a signal transmission path shared by those devices, and exchange information with said monitoring and controlling device using digital signals as media.

Dependencies are inferred from the claim text.

Facts

Application: 10/247,822Filed 20 Sep 2002
Priority: JP 2002-2010429 Jan 2002
Published: 31 Jul 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H02J 13/10
Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network: characterised by displaying…
H02J 13/333
Characterised by the remotely-controlled equipment, e.g. converters or transformers: the equipment forming part of substations
Y02E 60/00
Enabling technologies
Y04S 10/16
Systems supporting electrical power generation, transmission or distribution: electric power substations