Construction
Operation & Maintenance
Substation
TEPCO have 1577 substations in 2005. We have built a variety of substations
depending on their purpose, supplying voltage, installing cost, and its supplying
area. 500kV large-scale underground type substation has been built for stable
and efficient supply for Tokyo metropolitan area.
Even though we operate a variety of substations and machineries, We have
achieved very low annual average electricity interrupting time. For stable
supply, we have introduced many up-to-date techniques. And we have organized
quality management system for substation design and construction (e.g. Guidelines
for installation of SF6 Gas Insulated Switchgears.). And we have developed
effective diagnostic/maintenance techniques for every machinery (e.g. dissolved
gas analysis and circuit breaker operation monitoring are employed).
We can offer the best solutions for substation construction/operation from
our technical experience.
Substation Control Automation (SCADA)
SCADA System
RTU (Remote Terminal Unit) installed in distribution & transmission substations
and SCADA system can make substations unmanned and remote monitoring and controlling
substations possible.
TEPCO's SCADA Technology
- High Reliability
Doubling main parts and TEPCO's much experience about SCADA system design
can realize high reliability & availability.
- Monitoring Substations
Automatic monitoring and displaying of substation condition can be conducted
based on the information from RTUs.
- Operation of Substation equipment
Manual operation by operators and automatic operation
by SCADA system are possible.
- Automatic Message
SCADA system can edit messages about fault information, etc. and messages
are reported to related offices automatically.
- Substation Operation Supporting Function
Various information needed for substation operation (operation
record, load status record, etc.) can be generated automatically.
