Environmental Engineering Reference
In-Depth Information
3.2.6. Demonstration of Resilience Index Monitoring
The monitoring of individual indicators is performed by the respective
instrument. It is anticipated that instruments are calibrated to appropriate scale
for individual unites. Signal processing includes a following operation:
instrument calibration, signal digitalisation and signal acquisition within the
respective time increment and calculation of the resilience indicator.
Following determination of the resilience index in the appropriate time
period reflecting sudden change of the individual period the agglomerated
value of the total resilience will be monitored.
In this exercise we will assume that every indicator is measured in the
time interval Δt
0
. Also, it is assumed that the air temperature and air pressure
are constant during this exercise. Indicators nominal values and sudden
changes are as given in the table 1
In this demonstration exercise we have taken into a consideration the
situations defined as the objects of the demonstration with the sudden changes
of individual indicators.
Following situations are taken into a consideration:
1
Change of wind power density
2
Change of efficiency of wind power plant
3
Change of frequency
4
Change of electricity cost
In the design of the Objects under consideration it is introduced
assumption that the sudden change of indicators is triggered at the same
moment for all indicators.. Also, the change of indicators are normalised and
the maximum change for each of the indicator expressed in normalised value.
It is of particular interest for this demonstration to have each object defined as
the composition simulations sudden changes of all indicators as shown on
table 1.
The Total Resilience Index is determined for a following cases .
1
Case 1- WPD > EWPP = PF = EC
2
Case 2 - EWPP > WPD = PF =EC
3
Case 3 - PF > WPE = EWPP = EC
4
Case 4 - EC > WPPD = EWPP = PF
The results obtained for these cases are shown in table 2.
