Parameters
Adaptive Parameter Sets
are part of the Device Parameter Tree.
By means of
Adaptive Parameter Sets
you can temporarily modify single parameters within the parameter
setting groups.
Adaptive Parameters fall back automatically, if the acknowledged signal,
that has activated them, has fallen back. Please take into account that
Adaptive Set 1 is dominant to Adaptive Set 2. Adaptive Set 2 is dominant to
Adaptive Set 3. Adaptive Set 3 is dominant to Adaptive Set 4.
In order to increase the usability (clearness) Adaptive Parameter Sets
become visible if an corresponding activation signals has been assigned
(Smart view 2.0 and higher).
Example: In order to use Adaptive Parameters within Protective Element I[1]
please proceed as follows:
•
Assign within the Global Parameter tree within Protective Element I[1] an
activation signal for AdaptiveParameterSet 1.
•
AdaptiveParameterSet 1 becomes now visible within the Protection
Parameter Sets for element I[1].
By means of additional activation signals further Adaptive Parameter Sets
can be used.
The functionality of the IED (relay) can be enhanced / adapted by means of
Adaptive Parameters
in order to
meet the requirements of modified states of the grid or the power supply system respectively to manage
unpredictable events.
Moreover, the adaptive parameter can also be used to realize various special protective functions or to expand
the existing function modules in a simple way without to redesign the existing hardware or software platform
costly.
The
Adaptive Parameter
feature allows, besides a standard parameter set, one of the four parameter sets
labeled from 1 to 4, to be used for example in a time overcurrent element under the control of the configurable
Set Control Logics. The dynamical switch-over of the adaptive parameter set is only active for a particular
element when its adaptive set control logic is configured and only as long as the activation signal is true.
For some protection elements such as time overcurrent and instantaneous overcurrent ( 50P, 51P, 50G, 51G…),
besides the “default” setting there exist another 4 “alternative” settings for pickup value, curve type, time dial,
reset mode set values which can dynamically be switched-over by means of the configurable adaptive setting
control logics in the single set parameter.
If the
Adaptive Parameter
feature is not used, the adaptive set control logics will not be selected (assigned).
The protective elements work in this case just like a normal protection using the “Default” settings. If one of the
Adaptive Set
Control logics” is assigned to a logic function, the protective element will be “switched-over” to the
corresponding adaptive settings if the assigned logic function is asserted and will fall back to the “Default”
Setting if the assigned signal that has activated the
Adaptive Set
has fallen back.
Application Example
During a Switch-OnTo-Fault condition, it is usually requested to make the embedded protective function tripping
the faulted line faster, instantaneously or sometimes non-directionally.
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