Bus voltage
Per-unit voltage and solved angle for each energized bus, with voltage-limit checks.
Electrical network studies
Power flow software built for interconnection model development.
Create the one-line, solve the AC network and trace voltage, MW, MVAr, loading and losses through the same project case used for PSS/E exchange.
- Network model
- Buses, branches, transformers and machines
- Solution results
- Voltage, angle, MW, MVAr and losses
- Stress studies
- N-1 contingency and PV/QV analysis
- Utility exchange
- PSS/E-compatible RAW export
One electrical source of truth
Build the diagram and the calculation model together.
Each item on the single-line diagram is tied to the engineering record used by the solver. Selecting a bus, transformer, branch, load, generator, BESS or capacitor opens its organized data inspector and corresponding equipment table.
Voltage-based colours, movable equipment, editable bus lengths, connection routing and saved layout data keep the diagram readable while the network changes.
Steady-state modelling includes
- Swing, generator-controlled and non-generator bus behaviour
- Two- and three-winding transformer impedances, taps and ratings
- Overhead conductor and cable parameters based on distance
- MW and MVAr load, generation, BESS and capacitor injection
- Branch-end flows, transformer losses and loading checks
- Explicit convergence status and maximum-mismatch reporting
Calculated outputs
Read the operating point from the one-line.
The solved diagram shows the quantities needed to understand whether the proposed architecture is electrically coherent before deeper studies begin.
Branch power
MW and MVAr at both line terminals so sending, receiving and loss values remain visible.
Transformer duty
Terminal flows, impedance, losses, cooling ratings, tap state and overload status.
Swing balance
Active and reactive power absorbed or supplied by the utility equivalent to balance the solved case.
Reactive controls
Capacitor steps, remote voltage or power-factor targets, and generator or BESS Q capability.
Solution quality
Iteration count, maximum mismatch, control actions and explicit solved or failed status.
Beyond the base case
Use the solved case for the next engineering question.
| Study | What changes | What the model reports |
|---|---|---|
| AC power flow | Base operating point and enabled controls | Voltages, angles, flows, losses, loading and mismatch |
| N-1 contingency | One branch, transformer or machine is removed per scenario | Convergence, voltage violations, overloads and ranked severity |
| PV analysis | Selected load or transfer is increased through a sweep | Last converged point, criteria margin and limiting elements |
| QV analysis | Monitored voltage is swept while reactive injection is calculated | Reactive margin, minimum point and control or Q-limit actions |
| Short circuit | Balanced or unbalanced faults are applied | Fault current, equipment duty and sequence-network contribution |
| RMS dynamics | Timed faults, switching and source voltage or frequency events | Voltage, frequency, MW and MVAr channels over time |
Study results are engineering-development outputs. Final submission results require professional review, current utility assumptions and validation in the utility's accepted software environment.
PSS/E workflow
Carry the network into utility review.
Select PSS/E RAW revision 34 or 35, run the readiness check, and export the steady-state network with solved-case values in the fields PSS/E stores. Companion DYR, sequence and validation files keep the broader model package aligned.
Before the handoff
Confirm utility source equivalents, transformer test data, line sequence values, machine limits, dynamic-model parameters and project-specific interconnection requirements. Then read the case back in the target PSS/E version and reconcile any differences.
Solve the architecture while it is still easy to change.
Build the electrical network, run the base case and prepare a utility exchange package from the same model.