| Original document(11 pages) Authorized document(11 pages) 中文版 |
A network which simplifies structure, realizes autonomous automation, digitalizes data, and effectively uses data is disclosed. 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 performs a protective arithmetical operation according to values detected by the state detector and outputting a protection command to a controller. A control card performs 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. 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. |
Application Number
申请号 |
02142540 |
Application Date
申请日 |
2002.09.20 |
| Title 名称 |
Transformer substation system |
Publication Number
公开号 |
1435931 |
Publication Date
公开日 |
2003.08.13 |
| Approval Pub. Date |
2007.05.16 |
Granted Pub. Date |
2007.05.16 |
| International Classification 分类号 |
H02J13/00 |
Applicant(s) Name
申请人 |
Hitachi, Ltd. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Wakita Takayuki;Aihara Takashi;Miyazawa Yoshimune |
| Attorney & Agent 代理人 |
ma gao |
| More information 更 多 信 息 |
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