Load Flow / Voltage Drop

LOAD FLOW/VOLTAGE DROP:

With DAPPER, users can calculate the voltage drop on each feeder and transformer branch, voltage on each bus, projected power flow, and losses in the power system. This program may be used for conventional voltage drop analysis, loss analysis, power factor studies, capacitor placement, long-line charging effects, impact loading for motor starting studies, generator sizing, and for cogeneration analysis. With DAPPER, a single load flow program models loop and radial power systems. 

Features

  • Models radial, loop, and multiple independent systems.
  • Models utility and generator equivalent impedance calculated from short circuit duty.
  • Models up to 50 utilities/swing bus generators.
  • Models up to 400 regulated and unregulated co-generators.
  • User definable per unit driving voltage at each utility and swing bus generator.
  • Models transformer primary and secondary taps and off nominal rated voltages.
  • Full transmission line modeling with built in line parameter calculators.
  • Models any combination of motor and non-motor loads with global and/or local load factors.
  • Models any combination of constant kVA, constant impedance and constant current loads.
  • Reports bus voltage, voltage angle, and voltage drop at each bus.
  • Reports branch voltage drop, power flow in kW, kVAR, kVA, Amps and power factor.
  • Reports branch loss in kW, kVAR, kVA, and total system losses.
  • User definable report criteria for bus and branch voltage drops.
  • Percentage voltage drops based on system voltage per ANSI standards.
  • Double precision calculations improve solution accuracy.
  • Rapid solution convergence.
  • Suitable for impact motor starting, capacitor placement and power factor studies.
  • Load flow results validated to match with benchmark calculations and IEEE examples.

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