Open-Phase Fault

Single & Double Phase Series Fault

Graphically apply and study the impact of open-phase condition in an unbalanced electrical power distribution system. Apply single phase series fault on either phase A, B, C or double phase series fault on AB, BC or CA.

Simulate the impact of series faults with steady-state solution without the initial transients. For transformers, the effects of an embedded winding, no-load current and losses, transformer type (core and shell), and inter-phase A, B, C mutual coupling, including zero-sequence are included.

Graphical Placement of the Open-Phase on the One-Line Diagram

Easily place open-phase faults (phase A, B, or C) at any terminal of the three-phase branches, including two-winding and three-winding transformers, cables, transmission lines, impedances, and reactors.

Induction Motor Modeling

The modeling of induction motors has been enhanced to handle severe unbalanced system conditions caused by an open-phase fault, including the effects of negative-sequence current.

Leading to the development of the open phase fault module and, as part of the verification and validation (V&V) process, we have conducted numerous studies and have created benchmarks to simulate open-phase conditions in various networks, including the off-site power supply system of a nuclear power plant. V&V test cases have been created to simulate electrical network behavior with different models and under various operating conditions.

Open-Phase Fault

Open-Phase Fault

Open-Phase Fault

Graphical Placement of the Open-Phase on the One-Line Diagram

Induction Motor Modeling

Transformer Modeling

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