This function does not help with fast zero sequence
voltage changes.
Note:
This setting makes sense the grid conditions are very unbalanced, meaning that there are
very high zero sequence voltages the resonance point. The coil is
positioned the determined tuning point after the first estimate has been completed.
In this case, the 'Forced search delay' used delay time (see section 11.
0 Avoid resonance peak
The coil started the opposite direction and reversed necessary the system can
search the falling edge (away from the resonance point). the measured value leaves this tolerance range
(due switching), the search aborted and new search started.3. The number
of searches can reduced when the tolerance for slow changes adjusted.
After the first estimate has been determined the falling edge, the direction changed
and new, normal search started the direction the resonance curve.)
.
0 Check resonance curve:
If the regulator displays 'Tune' and this parameter set, tolerance threshold placed
around the determined resonance curve. The tolerance range only consists the
absolute value the zero sequence voltage.
The parameter 'Exceed resonance peak' usually disabled,
meaning that the resonance point not exceeded unless has for tuning. This occurs frequently compen-
sated 110 overhead transmission grids. The size the tolerance range does not change.
NO The angle measurement supressed. the zero se-
quence voltage does not leave the tolerance field during the set time, the current zero
sequence voltage will adopted the new reference voltage the end this observa-
tion period.
0 Adaptation Uref:
Grid switches are always relatively fast and over within few minutes. (often cable networks)
0 Une angle measurement
Parameters Description
YES angle measurement performed when the synchronization voltage con-
nected.1.1. contrast, changes
due weather and crosstalk from load current changes are usually very slow. essentially impacts the tolerance range and the number identified
grid switches.Page 102 Detailed description REG-DP/ REG-DPA parameters
We take care it.
Default setting: min inactive)
Note:
Values smaller than min are invalid
