MR TAPCON 230 basic User Manual

7 Functions and settings
102 TAPCON® 230 basic 2117246/02 EN © Maschinenfabrik Reinhausen 2012
Comparison between line drop compensation and Z compensation
Line drop compensation (vectorial compensation):
 provides more precise compensation of line voltage drops
 requires several parameters
 requires full knowledge of the line data
Z compensation:
 can be used with minor changes in the phase angle φ
 is not dependent on phase angle φ
 is simple to set
 can also be used in meshed grids
Both methods are described in more detail in the following sections.
7.3.13.1 Line-drop compensation
Line drop compensation requires exact line data. Line voltage drops can be
compensated very accurately using LDC.
To set the line drop compensation correctly, you have to calculate the ohmic
and inductive voltage drop, in relation to the secondary side of the voltage
transformer in V. The existing measuring circuit also has to be set correctly.
The setting values must first be calculated in order to enter the correct values
for the ohmic and inductive voltage drops.
Sample calculation:
V
r
Setting for ohmic line voltage drop in V
V
x
Setting for inductive line voltage drop in V
I
N
Nominal current in A of selected current transformer connection
on device:
1 A or 5 A
k
CT
Current transformer ratio
k
VT
Voltage transformer ratio
r Ohmic line resistance in Ω/km per phase
x Inductive line resistance in Ω/km per phase
L Length of line in km

MR TAPCON 230 basic Specifications

General

Brand	MR
Model	TAPCON 230 basic
Category	Controller
Language	English