GE Multilin G650 Manual page 218

5 SETTINGS
Stage (1 - 2) Tap: This setting specifies the minimum Operation three-phase power for the Stage 1 (2) element. The power
value defined in this setting is the minimum distance between the source and the directional power characteristic. This
value can be positive or negative. The value of this setting is defined in total MW (primary) – the CT and VT value is
considered in the calculations.
NOTE:
Even if the element defined in this setting is MW, this does not necessarily mean that the resulting value and the RCA
setting are in MW. For example:
RCA: 30 º SMIN: 100 MW.
If we assume that there is only active power. The element operation would be produced for a value of:
P = 100 / cos (30) = 115,7 MW.
If there was only reactive power:
Q = 100/sin (30) = 200,0 MVar.
(In this case the real Operation elements are Mvar, even if SMIN is expressed in MW.)
Stage 1 (2)Time: This setting specifies the delay for Stage 1 of the element. For reverse power or direct power
applications, usually Stage 1 is used for alarm functions, while Stage 2 is used for tripping functions.
Snapshot Events: This setting enables or disables the generation of events. All states in this function are affected by this
setting.
c) STATUSES
Statuses defined for this Function are as follows:
DIR PWR1 (2, 3) BLOCK:
DIR PWR1 (2, 3) STG1 (2) OP:
DIR PWR1 (2, 3) STG1 (2) PKP:
DIR PWR1 (2, 3) STG PKP:
DIR PWR1 (2, 3) STG OP:
GEK-113285A
Writing status, operates by level. When this status is activated externally (via PLC), the
directional power element is blocked. This status affects both elements in the
protection element (stage 1 and 2).
Activation of this status produces the event:
Deactivation produces the event :
This is activated when the element that corresponds to stage 1/2 is activated. Events
generated by this element are:
DIR PWR1 (2, 3) STG1 (2) OP ON
DIR PWR1 (2, 3) STG1 (2) OP OFF
Activation of this status indicates that the power value has exceeded the threshold
indicated by the Stage 1/2 element. Events generated by this element are:
DIR PWR1 (2, 3) STG1 (2) PKP ON
DIR PWR1 (2, 3) STG1 (2) PKP OFF
This status is a logic OR between the DIR PWR STG1 PKP and DIR PWR STG2 PKP
statuses. Activation of this status indicates that the power value has exceeded the
threshold indicated by any of the Stage 1/2 elements. Events generated by this
element are:
DIR PWR1 (2, 3) STG PKP ON
DIR PWR1 (2, 3) STG PKP OFF
This status is a logic OR between the DIR PWR STG1 OP and DIR PWR STG2 OP
statuses. This is activated when the element that corresponds to stage 1/2 is activated.
Events generated by this element are:
DIR PWR1 (2, 3) STG OP ON
DIR PWR1 (2, 3) STG OP OFF
G650 Generator Protection & Control System
5.4 PROTECTION ELEMENTS
DIR PWR1 (2, 3) BLK ON.
DIR PWR1 (2, 3) BLK OFF.
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