ABB 550 kV GIS is designed for a single-phase continuous current of 4000 A. The maximum three-phase power flow through the switchgear is consequently 3500 MW.
At the given conditions (500 kV and 1000 MW) the capacitive power gain is about 20 times bigger than the inductive power loss.
The reactive power is therefore mainly capacitive. Even at max power flow of 3500 MW through the GIS the reactive power is mainly capacitive.
The GIS therefore has no reactive power losses.
The maximum reactive power gain occur when no current is flowing and is the above mentioned 0.0016 MVAr per meter GIS (per phase) or 0.005 MVAr per meter GIS (three-phase)
If this is a project specific question please contact our local ABB representatives, who can help you to get in contact with the right people in our service department or with the project manager of the installation.
High Voltage Products
If you want to purchase a product, need any pricing information or need help or support from ABB, please contact your local partner.