Toshiba GR-200 Series Instruction Manual page 367

Reverse active power protection (RP)
2.29.1
The RP function consists of two stages (elements) independently (RP1 and RP2).
RP1 element characteristic
(i)
Figure 2.29-1 shows the characteristic of the RP1 element.
Determination of active power flow:
The user shall set a direction about active power, which the user can find the
corresponding information in Chapter 9.2.4(i). Set either DEP, Send, or Reactive for
setting [PR-Power] to define the direction:
DEP:
Send:
Reactive:
Operation judgement of RP element:
The PR1 element can operate if the pick-up value of active power (P) is less than
threshold setting [RP1]. The RP1 element will return when the P is greater than the
reset condition, at which the user can set with Equation (2.29-1):
Reset condition=setting [ RP1 ] × setting[RP1-DPR]
where,
RP1:
RP1-DEP:
[RP1]
Setting
Figure 2.29-1 Characteristic of RP1 element
It can be agreed with the Send or Reactive direction described
with the setting [Power] of
It cannot agree with the setting [Power]. The direction will match
with either positive or negative one defined by the direction in
Figure 9.2-3.a.
It cannot agree with the setting [Power]. The direction will match
with either positive or negative one defined by the direction in
Figure 9.2-3.b.
value of pick-up threshold in RP1 element (watt)
Ratio of prick-up and drop-off (%)
- 348 -
Q(var)
P(W)
0
Monitoring function
6F2T0200 (0.15)
.
(2.29-1)
GRE200 (1,2)