Low pass filter with initialization at t=0
In normal mode, the CLRseg filter is initialized based on the initial value indicated in its functional box.
In automatic "Auto" mode, the filter is automatically initialized according to its input value, and maintains its output equal to its input value.
The CLRseg block is for example used in the REGxx models of the speed governors to filter the unit speed
Depending on the state of the circuit breaker, the initialization value is 0 if the group is stopped, or the nominal value if the simulation starts with the circuit breaker closed, group connected to the network.
This device allows the simulation to be launched smoothly, and at steady state.