is the index of the observation period i j is the index of the generic TTC value resulting from the calculations of the 2 Coordinated Capacity Calculators is the hour of the day to which the timestamps refer. (e.g. at present h=p h means peak hours h=o means off peak hours). Ti is the ith observation period, being T0 the last 3 months of the same season. is the TTC value resulting from the calculations of the 2 Coordinated Capacity TTCj,h Calculators referring to hour h. Is the D-2 TTC value D-2TTCh is the upper limit of the TTC for the period Ti and hour h. TTCi,h greater than UTTCi,h this upper limit are considered not credible Reasons of violation could be wrong input data or serious bugs in the process of one or both Coordinated Capacity Calculators. is the lower limit of the TTC for the period Ti and hour h. Below this limit the LTTCi,h results are considered not credible for the same reasons above. is the acceptable difference in results of the two Coordinated Capacity ΔTTC h Calculators with reference to the hour h. It measures the effectiveness and consistency of the process. Out of range differences could reflect bugs or serious misinterpretation of remedial actions or in general of the High Level Business Process. is the significant set of statistical samples of TTCj,h showing consistency of Iss i,h results between the two Coordinated Capacity Calculators in a given period of observation Ti. Issi,h does not includes cases: where: days are affected by additional constraints (e.g. low consumption days) data are affected by errors in individual grid models one or both Coordinated Capacity Calculators fail the calculation process one Coordinated Capacity Calculator is below LTTC and the other over UTTC referring to days when the pentalateral procedure is applied (for upper limits only) is the subset of Issi,h including the samples greater than UTTC only Issi,h+ is the mean value of the samples resulting from Max (0; Issi,h+ - UTTCi,h) in hi+ a given observation period Ti
i is the index of the observation period j is the index of the generic TTC value resulting from the calculations of the 2 Coordinated Capacity Calculators h is the hour of the day to which the timestamps refer. (e.g. at present h=p means peak hours h=o means off peak hours). Ti is the ith observation period, being T0 the last 3 months of the same season. TTCj,h is the TTC value resulting from the calculations of the 2 Coordinated Capacity Calculators referring to hour h. D-2TTCh Is the D-2 TTC value UTTCi,h is the upper limit of the TTC for the period Ti and hour h. TTCi,h greater than this upper limit are considered not credible Reasons of violation could be wrong input data or serious bugs in the process of one or both Coordinated Capacity Calculators. LTTCi,h is the lower limit of the TTC for the period Ti and hour h. Below this limit the results are considered not credible for the same reasons above. ΔTTC h is the acceptable difference in results of the two Coordinated Capacity Calculators with reference to the hour h. It measures the effectiveness and consistency of the process. Out of range differences could reflect bugs or serious misinterpretation of remedial actions or in general of the High Level Business Process. Iss i,h is the significant set of statistical samples of TTCj,h showing consistency of results between the two Coordinated Capacity Calculators in a given period of observation Ti. Issi,h does not includes cases: where: days are affected by additional constraints (e.g. low consumption days) data are affected by errors in individual grid models one or both Coordinated Capacity Calculators fail the calculation process one Coordinated Capacity Calculator is below LTTC and the other over UTTC referring to days when the pentalateral procedure is applied (for upper limits only) Issi,h+ is the subset of Issi,h including the samples greater than UTTC only hi+ is the mean value of the samples resulting from Max (0; Issi,h+ - UTTCi,h) in a given observation period Ti
Explanatory%20note%20ID%20CC%20methodology.docx