Moving Average Positive Sequence Voltage Logic; Moving Average Negative Sequence Voltage Logic; Moving Average Undervoltage Blocking Psl; Figure 109: Moving Average Positive Sequence Voltage Logic - GE P24DM Technical Manual

Chapter 10 - Voltage Protection Functions
8.4

MOVING AVERAGE POSITIVE SEQUENCE VOLTAGE LOGIC

V1avg >1 Status
V 1 Mov Average
V 1avg>1 Volt Set
V1avg >1 Delay
V Blocking 1
Enabled
VTS Fast Block

Figure 109: Moving Average positive sequence voltage logic

8.5

MOVING AVERAGE NEGATIVE SEQUENCE VOLTAGE LOGIC

V2avg >1 Status
V 2 Mov Average
V 2avg>1 Volt Set
V2avg>1 TripTime
V2 avg>1 StrtTime
V Blocking 1
Enabled
VTS Fast Block

Figure 110: Moving Average negative sequence voltage logic

8.6

MOVING AVERAGE UNDERVOLTAGE BLOCKING PSL

The Moving Average Undervoltage Protection function does not provide internal blocking for Pole Dead conditions.
To achieve this you must configure this in PSL as follows:
All Poles De ad All Poles De ad

Figure 111: Average Voltage Protection blocking

220
&
&
&
&
0
T1 drop-off
10000
P24xM
V 1avg>1 Start
V1avg >1 Trip
V00810
V 2avg>1 Start
V2avg >1 Trip
V00811
Vavg< Inhibit
V00 815
P24xM-TM-EN-2.1