With this parameter, you specify the time delay of the fast step down mode. If the actual voltage is greater
than the value of the limit for the fast step down mode (_:122), the fast step-down mode is activated. A fast
step down mode is not activated if the voltage limit is exceeded for only a brief period within the time delay.
Parameter: Fast step up
•
Default setting (_:118) Fast step up = off
Parameter: Fast step up limit
•
Default setting (_:119) Fast step up limit = –6.0 %
Parameter: Fast step up T delay
•
Default setting (_:120) Fast step up T delay = 2.0 s
With this parameter, you specify the time delay of the fast step up mode. If the actual voltage is less than the
value of the limit for the fast step up mode (_:119), the fast step up mode is activated. A fast step up mode is
not activated if the voltage limit drops below for only a brief period within the time delay.
Parameter: Function monitoring
•
Default setting (_:124) Function monitoring = 15 min
You can delay the pickup of the function monitor. With the setting Function monitoring = 0 min, the
function monitor is switched off.
Voltage Controller Only Grid Coupling Transformer
Parameter: Power-flow supervision
•
Default setting (_:16351:162) Power-flow supervision = on
With the Power-flow supervision parameter, you monitor the power flow. You can switch the param-
eter on or off.
Line Compensation for the Two-Winding Transformer
Parameter: Line drop compensation
•
Default setting (_:14011:125) Line drop compensation = off
You can use the Line drop compensation parameter to select the correction procedure of the load-
dependent line voltage drop. There are 2 procedures available for selection: LDC-Z and LDC-XandR.
For setting the parameter Line drop compensation = LDC-Z, consider the following parameter:
Parameter: Target voltage rising
•
Default setting (_:14011:126) Target voltage rising = 4.0 %
With the Target voltage rising parameter, you set the voltage drop across the line. The value repre-
sents the voltage rising in % of the Target voltage 1 that occurs at rated load. Only the magnitude of the
current is considered. The set value is added to Target voltage 1.
Target voltage rising [%] = ΔV
load
[%] if I
load
= 100 %
[foschlst-211013, 2, en_US]
V
SetComp
Target voltage at the end of the line
V
Set
Target voltage
I
load
Load current in %
Parameter: Max load current
•
Default setting (_:14011:127) Max load current = 100.0 %
Control Functions
8.9 Voltage Controller
SIPROTEC 5, Overcurrent Protection, Manual 1219
C53000-G5040-C017-8, Edition 07.2017
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