ETAP Load Flow

Simulation & Analysis

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Load Flow

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Quality Assurance

ISO 9001:2000 Standard
United States Code of
Federal Regulations
10 CFR 50
10 CFR 21
ANSI/ASME N45.2
ASME NQA-1
ANSI/IEEE Std 730.1
CAN/CSA-Q396.1.2

Load Flow Analysis

OTI understands what it takes to perform system studies. With ETAP’s advanced Load Flow module, you can create and validate your system model with ease and obtain accurate and reliable results. Built-in features like automatic device evaluation, summary alarms/warnings, and intelligent graphics make it the most efficient Load Flow program available today.

Key Features

Power flow
Demand load
Voltage drop
Power factor correction
Automatic device evaluation
Automatic temperature correction
2W & 3W transformer LTC/regulator actions
Real & reactive power losses
Extensive violation alerts
Multi-report result analyzer

Capabilities

Newton-Raphson, Fast-Decoupled, & Gauss-Seidel methods
Generator governors with isochronous or droop mode
Generator exciters with AVR or Mvar/PF controllers
Transformer load tap changers (LTC/regulators)
User-controlled convergence parameters
Multiple loading conditions
Lumped loading
Advanced solution techniques for fast convergence
Swing, voltage regulated, & unregulated power sources
Double-precision to handle small impedances
10,000+ bus capability

Load Flow Result Analyzer

ETAP Load Flow Result Analyzer is a time-saving tool that compares and analyzes multiple reports in a single view. You can compare the results of general information about the project or more specific information such as the load flow results for buses, branches, loads, or sources.

Compare & view multiple load flow results in a single view
Analyze & compare reports from multiple projects
Create a base line report & quickly identify deviations for all cases
View multiple bus, branch, load, & source results
Advanced alert & warning feature identifies & highlights overstressed components
Easily find components on one-line diagrams from the analyzer view
Export summary view into Microsoft® Excel for maximum data flexibility & visualization

Flexible Operations
Diverse operating conditions Multiple loading categories Multiple demand factors Unlimited configurations Different nameplate data Global & individual bus diversity factors
Reports
Customize output reports using Crystal Reports® Generate output reports in any language Voltage drops, losses, power flows, power factor, etc. Input data, detailed load flows, & summaries State-of-the-art graphic display of results Export reports to your favorite word processing program Graphically display device evaluation results Graphically display buses with marginal or critical under/over voltage Export one-line diagrams including results to third party CAD systems Alert view to display critical & marginal limit violation
Study Options
Option to update initial conditions Phase-shifting transformers Auto-adjust LTC/regulator settings Power factor correction Saves solution control parameters for each scenario Make changes to your system & re-run studies instantly Conduct unlimited “what if” studies within one database Calculate bus voltages, currents, & power factors Bus/transformer/cable reactor overload warnings Calculate power flows Update loading for DC load flow Voltage drop calculations Five levels of automatic error checking