Capacitor Data

This dialog box includes the following areas and tabs:

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

Figure 1: Capacitor Data Dialog Box

Connection Information

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

To Bus:  The bus the capacitor connects to, which must already exist on the one-line. For your reference, the To Bus base kV is displayed next to the bus name.

Specifications

Rated kV: Capacitor rated kV. This is used to determine the per-unit impedance of the capacitor for a given base kV.

Rated Size: Capacitor MVAR or kVAR rating at the rated voltage. The unit is specified in the box on the right.

Inrush: Specify the inrush current and duration for the capacitor. This is used in auto-coordination.

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