Shunt Reactor Data

This dialog box includes the following areas and tabs:

• Connection Information
• Specifications
• Harmonics
• Imported Data
• Comments
• Hyperlinks

Figure 1: Shunt Data Dialog Box

Connection Information

ID Name:  Uniquely identifies the shunt reactor.  This ID name is sometimes referred to as the shunt name, and can be up to 12 characters long.  The names default to SH-1, SH-2, SH-3, and so on as you enter new shunts on the one-line diagram, but you can change those names 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

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.

Resistance Factor

EasyPower offers two methods for calculating R_H:

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

R_H = R_Fund * H ^R-EXP

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

R_H = R_Fund * (1+ECF*H²)/(1+ECF)

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

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.

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