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Construction Operation & Maintenance

Communication Systems

TEPCO owns and operates its own in-house communication networks composed of optical fiber channels (overall length approximately 63,000km, as of 2004), metallic cable channels, microwave channels and satellite communication channels.

These networks provide signal transmission channels of protective relay systems, power facility supervision/control systems and business communications, thereby contributing to a stable, efficient supply of electric power in a wide area.

TEPCO can provide planning technology to construct communication networks for protective relay systems and so on.

TEPCO participates in and launches communication business actively. So TEPCO can provide planning technology to construct communication business networks, considering individual situations.

Facility Supervision and Control (SCADA)
Planning technology for constructing data exchange channels of various information, such as the numerical information of each electrical station ,the information of switched status and fault information.

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1. Role of Transmission System for Facility Supervision and Control
  • Transmission System for Facility Supervision and Control
    • Transmission system for automatic generating control of each power plant
    • Transmission system for data exchange between the field office and the Load Dispatching Offices for power facility operation, etc
  • Purposes to construct Transmission System for Facility Supervision and Control
    • Transmitting information accurately and efficiently required for power facility operation.

2. Contents of studies about Transmission System for Facility Supervision and Control
  • Contents of studies
    • Construction method in consideration of individual situations
    • Construction cost
  • Points of concern to study for Transmitting information for Facility Supervision and Control
    • Accuracy and efficiency
    • High reliability even in the event communication equipment itself fails
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      Planning technology for accurate and efficient Transmitting information for Facility Supervision and Control system

3. We can propose the Adequate Countermeasures by Using Our Technology
  • Hearing the needs
  • Extraction of the problems
  • Present system analysis
  • Proposal of solution
  • Planning system configuration
  • Cost estimation
  • Determination of Transmission System for Facility Supervision and Control


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