You are here: Database Technical Reference > Shunt Reactor Data

Shunt Reactor Data

This dialog box includes the following areas and tabs:

Figure 1: Shunt Data Dialog Box

Connection Information

Option Description
ID Name Uniquely identifies the shunt reactor.  This ID name can be up to 16 characters long.  The names default to SH-1, SH-2, SH-3... as you enter new shunts on the one-line diagram, but you can change those names to be more descriptive if needed.
To Bus The bus to which the shunt connects, which must already exist on the one-line.  For reference, the To Bus base kV is displayed next to the bus name.

Specifications

Option Description
R+jX Shunt data is entered as R+jX in ohms.  Standard shunt reactor data is entered using positive impedances, although negative numbers can also be entered.

Harmonics

Use the Harmonics tab to indicate whether this equipment item is introducing harmonics into your power system.

Figure 2: Harmonics Tab

Option Description
Resistance Factor

EasyPower offers two methods for calculating RH:

  • Resistance varying with a power of the harmonic (R-EXP):

    • RH = RFund * H R-EXP

  • Resistance varying with a percent eddy current factor (%ECF):

    • RH = RFund * (1+ECF*H2)/(1+ECF)

EasyPower defaults all skin effect correction to R-EXP and a value of 0.5.

Typical Resistance Correction Factors
  R-EXP %ECF

Transformer

0.5-1.0

1.0-3.0

Utility

0.0-0.8

    -

Generator

0.3-0.6

    -

Line/Cable

0.5

    -

Reactor

0.5-1.0

0.8-3.0

Motor

0.2-0.4

    -
Fundamental Amps

Use to set the fundamental amps. The options are as follows:

  • Equipment Rating sets Fundm Amps to the equipment rating of the item described in the Specifications tab. 
  • User Specified activates the Fundm Amps field, enabling you to specify a value. 

To use fundamental current calculated by power flow, select Calculated from Power Flow in the Summation Fundamental Voltage area of the Harmonics Options > Control dialog box.

Location

See Location for more information.

Imported Data

This tab is read-only and appears only if you have imported data from an SKM Data Format file. See Importing an SKM Format File for more information.

Comments

See Comments for information.

Hyperlinks

See Hyperlinks for information.

More Information

Database Technical Reference  
     

www.easypower.com

EasyPower, LLC

7730 SW Mohawk St.

Tualatin, OR 97062

(503)655-5059

techsupport@easypower.com

feedback@easypower.com

EasyPower Version 9.7

Copyright © 1991-2016 EasyPower, LLC. All Rights Reserved.

Help was last updated on 2/8/2016