The basic functional model library of DIgSILENT PowerFactory’s protection analysis tool has been extended to include additional devices such as CTs, VTs, relays, fuses and more complex protection schemes including user-defined modelling capabilities. Additionally, there are specially designed interactive VIs (Virtual Instruments) for displaying system quantities and, more importantly, for modifying protection settings in the graphical environment. This last feature is especially useful, as coordinated settings between different protection schemes can be modified via the cursor in the graphical environment, following which the settings in both the database and the simulation environment are also updated.
All protective devices are fully-functional under steady-state and transient conditions, allowing device response assessment under all possible simulation modes, including load flow calculation, fault analysis, RMS and Instantaneous Values (EMT) simulation.
PowerFactory’s main protection features are:
All protective devices are fully-functional under steady-state and transient conditions, allowing device response assessment under all possible simulation modes, including load flow calculation, fault analysis, RMS and Instantaneous Values (EMT) simulation.
PowerFactory’s main protection features are:
- Extensive relay database
- Accurate steady-state relay checking via short-circuit and load flow (balanced & unbalanced)
- Precise dynamic relay checking with RMS and EMT simulations
- Consideration of current transformer saturation
- Diagrams for overcurrent and distance coordination:
- Time-overcurrent diagrams
- R-X characteristic diagrams
- Time distance diagrams
- Automatic Protection Coordination Wizard for time-overcurrent protection schemes
Comment