ABB PVS980-58 - Limitation Based on Grid Voltage

Program features 35
 Limitation based on grid voltage
Active power limitation as a function of grid voltage can be used to reduce grid voltage
rise. The characteristics of this function can be set through parameter 130.76 P(U) limiter.
The limiter can be configured as Disabled, Constant limit, or Droop limit.
Constant P(U) limitation
When average grid voltage exceeds the value in parameter 130.77 P(U) trigger level, the
power limit is ramped down to 130.79 P(U) limit level. The value in parameter 130.80 P(U)
limit ramp is used for ramping the power limit down.
Later, when the average grid voltage falls below 130.78 P(U) release level, the power limit
is released and power is ramped up by 130.81 P(U) release ramp. The red line in Constant
P(U) limitation shows the active power limit.
Figure 15. Constant P(U) limitation
t
P
t
U
130.81 P(U) release ramp
130.80 P(U) limit ramp
130.79 P(U) limit level
130.77 P(U) trigger level
130.78 P(U) release level