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ISO 9001:2000 Standard
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10 CFR 50
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ANSI/ASME N45.2
ASME NQA-1
ANSI/IEEE Std 730.1
CAN/CSA-Q396.1.2
DC Load Flow & Short-Circuit

DC Load Flow and Short-Circuit modules provide analysis capabilities for engineers to design and maintain DC power systems. DC Load Flow calculates bus voltage profiles and branch power flows for user-specified conditions. It compares the calculated operating values against capabilities such as bus voltage limits, cable ampacities, and source output limits. DC Short-Circuit evaluates system conditions under a fault and assesses protective device ratings.

DC Load Flow Key Features
  • IEEE Standard 946
  • Integrated AC & DC systems
  • Newton-Raphson method
  • Voltage drop
  • Power losses
  • Battery auto-activation
  • Charger/UPS current limit
  • Charger/UPS mode auto-switching
  • DC converter modeling
  • Motor model auto-switching
DC Short-Circuit Key Features
  • IEEE Standard 946
  • Integrated AC & DC systems
  • Total bus and branch contribution fault currents
  • Fault current rising time
  • Battery modeling per IEEE/IEC Standard
  • Charger modeling per IEEE/IEC Standard
 
Standards & Methods
  • IEEE 946 Standard
  • Newton-Raphson Method
Capabilities
  • Evaluate system voltage profiles
  • Batteries auto-activate during reduced voltage conditions
  • Analyze ratings of protective devices
  • Calculate the total fault current
  • Calculate contributions from different sources
  • Calculate decay rate of the fault currents
  • Calculate voltage drops for different system components
  • Customizable battery libraries
  • Automatic alert of overloaded components & abnormal voltages
  • Automatic switching of charger & UPS models based on load conditions
  • Automatic switching of DC motor models based on terminal voltages
DC Components
  • Battery
  • AC-DC converters: charger, inverter, UPS
  • DC-DC converter
  • Cable & impedance
  • Motor, static load, & lumped load
  • Circuit breaker, fuse, & switch
  • Composite network & composite motor
Reporting
  • Automatically flag marginal & overstressed devices
  • Export output reports to your favorite word processor
  • Export one-line diagrams with results to third party CAD systems
  • Use Crystal Reports for full color, customizable reports
Flexible Operation
  • Interdependent AC & DC calculations
  • Unlimited configurations to model different system conditions
  • Model different loading levels