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3. Data Acquisition and System Modelling
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3.1 Allocation of Information and Data
The initial activities that followed the beginning of the project in April 2005, involved analysing the then current technical, organisational and legal status of the IPS/UPS. The Questionnaire on Data Acquisition for IPS/UPS was agreed among the parties in June 2005. The questionnaire was based on earlier data allocation procedures that had been used in similar UCTE investigations. It consisted of a specification for the necessary input data on steady state and dynamic system simulations, as well as data for power system control, system operation and organisational aspects. A similar acquisition procedure for network data was applied within the UCTE. These procedures were so determined to ensure that the analyses were carried out under the required quality standards. The legal marginal conditions were issued in a separate legal questionnaire.
It evolved during the study procedure that the acquisition of data was the most complex matter entailed in this work. Although a certain amount of information was provided, it did not entirely meet the volume of the information required. Consequently, a compromise was arrived at, that enabled the necessary input and accuracy of data to be supplied in time for the analyses to be carried out. However, for the purpose of achieving the provisions laid down in the ToR, the UCTE and the IPS/UPS made plausible assumptions where necessary or used data gained by experience or information from relevant literature.
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