Load Estimate - Setup for Analysis Dialog

Load Estimation/Forecast Setup dialog is launched from the Analysis menu's Setup for Analysis Execution dialog by selecting Load Estimation (in Analyses Available frame) and then choosing the [Edit Analysis Parameters] command.

Measurement Option:

• Use Circuit Measurements - With option selected, Load Estimation uses circuit measurements to scale loads.

  Note!

  Use Circuit Measurements option cannot be used when Use Target Loads option is selected.

• Measurements can be of type current, real power, or reactive power.

• Loads are scaled to cause power flow calculated values to agree with circuit measurements.  

• Entered Voltage measurements can only be matched at the start of circuit, with loads scaled so the downstream results sum to the circuit measurement.  

• The scaling factors are stored with every line/cable section.

• Additional options for the application of recorded measurements and resulting scaling factors for specific analysis time points are set from the Measurement Scaling Options dialog.

Output Option:  

• View Component Results - with option selected, Load Estimation runs interactively, displaying application results for individually selected components.

  Note!

  This option only functions when the Interactive Apps option, found in the main Options! menu dialog,  is set (On).

During analysis execution, Simply use the mouse pointer finger ( ) to view results for the desired component.  

From Load Estimation Results window:

Choose "Next" to select another component for viewing.  

Choose "Close" (or hit the <esc> key) when finished with interactive viewing.  

Report Options:

• Generate a Report -  when selected, the application generates an ASCII output report, which can be output as:
   

• Comma Separated Report -   with application results in columns separated by a comma, which can then be imported into a spreadsheet.

• Assign Report Name - allows the user to specify the file name for the output report.

• Default Report Name - directs application to use the default name (i.e. vtEst.rep) for the output report, overwriting an existing report file with the same name.

Forecast  Estimation Data:

• When selected, allows the application to handle future load estimates for circuits having components with a defined load growth.

Time for Analysis - brings up the Forecast Time Points Dialog in which a future time point can be specified for the analysis.

Design Temperature - scales circuit loading by a factor based upon the selected design temperature.

Current Year -  The calendar year from which the number of forecast years is calculated.

Forecast Years -  The number of years into the future from the current year, for which the Load Estimation calculation may be made.

Years of Peak Data -  The number of years of recorded data that will be used in the Load Estimation calculation.

Load Options:

• Scaling Factors -  provide a useful way to address "what if" considerations.  The results of the Load Estimation calculation will be multiplied by these factors, independently defined  for:

 Real Load

Reactive Load

Load Types to Use

The user selects the type of loading to be considered by Load Estimation.  Care is needed in making this selection, as loads may be defined for various components is different ways:  

• Use Spot Loads -  Select to have Spot Loads considered by Load Estimation.

• Use kWHr Loads -  Select to have kWHr Loads considered by Load Estimation.

• Use Target Loads -  Select to have Target Loads considered by Load Estimation.

  Note!

  Use Circuit Measurements option cannot be used when Use Target Loads option is selected.

General Menu Items: