CYMFLOW, Power Flow Analysis Module

Demo Version

CYMFLOW is the analysis module of PSAF dedicated to power flow analysis in three-phase electric power networks. It is equipped with powerful analytical options and alternative solution techniques.

Program Features CYMFLOW utilizes state of the art sparse matrix/vector methods and multiple solution algorithms:    • Full Newton-Raphson.    • Fast Decoupled (with or without constraints).    • Gauss-Seidel. CYMFLOW is the main analysis module of PSAF and has a seamless interface with the other PSAF Modules namely:    • CYMFAULT to communicate the pre-fault voltage profile, current flows and transformer tap positions, for fault studies taking into account pre-fault system loading.    • CYMHARMO to communicate the fundamental frequency voltages and currents for harmonic distortion calculations.    • CYMSTAB to communicate the initial conditions to the transient stability simulator.    • CYMVSTAB for static Voltage Stability Studies.    • CYM-Motor Start account for system wide voltage drops during motor start.    • CYM-AC Contingency to solve unlimited variations of a base network.	Power Flow Analysis
Analytical Capabilities    • Analyze Networks with thousands of buses and branches.    • Multiple swing buses allowed.    • Automatic swing bus selection for isolated subsystems.    • Distributed Swing bus option.    • Simultaneous solution for islanded networks.    • Area Interchange with area control generators.    • Generator reactive power limits and remote voltage control.    • Local or remote control of voltage and reactive power flow through tap changing transformers.    • Control of real power flow through phase-shifting transformers.    • Switchable shunt element.    • Generalized load modeling, including Constant Power, Impedance and Current.    • Representation and control of DC lines.    • Wind Energy Conversion Systems (WECS).    • Modeling and representation of FACTS devices (UPFC and STACOM).    • Transformer inrush currents.    • Color coding on the network One-Line Diagram of overloaded equipment and buses with voltage violations.    • User-defined units for Bus voltages and line flows for both tabular and graphical results.    • Tabular reports can also be directly exported to other spreadsheet programs such as MS-Excel.	Power Flow Analysis