Mains Time-Dependent Voltage - Woodward easYgen-2000 Series User Manual

Configuration
Configure Monitoring > Mains > Mains Time-Dependent Volta...
4.4.2.8

Mains Time-Dependent Voltage

General notes
146
Voltage is monitored depending on parameter "Mains voltage
measuring" (parameter
supporting a dynamic stabilization of mains. For this reason a FRT
(Fault-Ride-Through) curve can be defined.
Furthermore it can be configured either as undervoltage or over‐
voltage monitoring (parameter
voltage of at least one phase (depends on the settings of param‐
eter 4952 Ä p. 147) falls below/exceeds the configured "Initial
threshold" (parameter
monitoring sequence starts and the voltage threshold will change
in time according to the configured threshold curve points.
If the measured voltage falls below/exceeds this curve, the moni‐
toring function triggers and LogicsManager 07.28 becomes TRUE.
The mains decoupling function became active, if configured. If the
measured voltage falls below/exceeds the configured "Fallback
threshold" (parameter
"Fallback time" (parameter
voltage monitoring sequence will be reset.
The threshold curve results from seven configurable points and a
linear interpolation between these points. Fig. 80 shows the default
FRT curve for time-dependent voltage monitoring. The curve
shows the device default values according to a typical grid code
requirement.
The time points should always have an ascending
order. The fallback threshold (parameter
4978 Ä p.
value higher/lower than the initial threshold (parameter
4970 Ä p.
easYgen-2200/2500 | Genset Control
1853 Ä p. 97). This monitoring function is
4953 Ä p. 147). If the measured
4970 Ä p. 147), the time-dependent voltage
4978 Ä p. 148) for at least the configured
4968 Ä p. 148), the time-dependent
148) should always be configured to a
147).
37535B