The BDEW Grid Code instructs the handling of electrical energy sources running parallel
to the medium voltage grid. This rule has an impact with some items on the genset
control. A more detailed description relating to that BDEW technical guideline can be
ordered directly by the BDEW Germany. With easYgen-3000... genset control series
functions which have to be covered according to this BDEW rule are supported.
The mains decoupling is executed through following monitors:
• Mains under voltage V<
•
• Mains under voltage V<<
•
• Mains over voltage V>
•
• Mains over voltage V>>
•
• Mains under frequency f<
•
• Mains over frequency f>
•
• Q(V) Monitoring
•
• Mains Time-Dependent Voltage (FRT)
•
The Change of frequency monitors (vector/phase shift or df/dt) is not directly required by
BDEW. These monitors are depending on the according network providers.
Other functions related to the BDEW guideline:
• Frequency Depending Derating Of Power. Refer to
•
• Reactive Power Control, alternatively:
•
◦ Power Factor Control. Refer to
╚═▷ “4.4.4.2 Power Factor Control”
◦
◦ Power Factor Characteristic. Refer to
╚═▷ “4.4.4.2 Power Factor Control”
◦
details.
4.5.3.5
Mains Overfrequency (Level 1 & 2) ANSI# 81O
General notes
There are two overfrequency alarm levels available in the control. Both alarms are
definite time alarms and are illustrated in the figure below. The figure diagrams a
frequency trend and the associated pickup times and length of the alarms. Monitoring of
the frequency is accomplished in two steps.
If this protective function is triggered, the display indicates "Mains overfreq. 1" or
"Mains overfreq. 2" and the logical command variable "07.06" or "07.07" will be enabled.
╚═▷ “9.1.1 Triggering Characteristics”
for the triggering characteristic of this
monitoring function.
499
easYgen-3000XT Series
B37574
4 Configuration
4.5.3.5 Mains Overfrequency (Level 1 & 2) ANSI# 81O
Released