To prevent the fault in the network and secure the reliable power supply, we
can offer consultancy services in developing the protection and control systems
suitable for the improvement of the power system.
For example, special protection systems for the purposes such as securing
the power supply in the very important area or preventing the fault from affecting
the wide area, can be studied and developed.
Improvement in Protection Relay Performance
If a protection relay fails to properly operate, a cascading failure followed
by a large-scale outage is expected. It is essential that, the actual operation
of the existing protection relay be constantly reviewed, including the validity
of the relay setting. In addition to this, computation analyses and surveys
on operation of the protection relay during the potential disturbance are
to be conducted for the current and future system in order to prevent a malfunction.
TEPCO has a wealth of experience in operation practices regarding the reviewing
of work, relay operation analysis and setting coordination, etc.