IEC_1194.pdf

1194IEC-3-CONTENTSFOREWORDPageClause51Scope2 PV-system description72.1 Array field.2.1.1 Modules2.1.2Panels2.1.3 Array.2.1.4 Array field2.1.5Orientation2.2 Storage sub-system2.2.1 Cell.92.2.2 Battery92.2.3 Storage control unit112.3 Energy control and conversion112.3.1 Inverter.132.3.2Other devices132.4 Loads.132.4.1 Entire load132.4.2 Each load132.5 Backup generators152.6 System electrical layout152.6.1 Schematic block diagram152.6.2 Array cabling(schematic block diagram with diodes)152.6.3 Protection and safety devices-Overall layout15153 Environmental parameters3.1 Time periods to be considered173.1.1 Reference period173.1.2 Period of intended use173.2Site173.3 Reference pyranometric data17194 Performance parameters194.1 Instantaneous performance(power related)4.1.1 Array field214.1.2 Storage control unit214.1.3 Storage sub-system214.2 Cumulative performance during a time period(energy related)234.2.1 Short-term performance.234.2.2 Long-term performance(during reference period(s)2323Annex A-Array field and storage sub-system component.2711941EC-7CHARACTERISTIC PARAMETERS OFSTAND-ALONE PHOTOVOLTAIC(PV)SYSTEMS1ScopeThis International Standard defines the major electrical,mechanical and environmentalparameters for the description and performance analysis of stand-alone photovoltaicsystems.The parameters as listed are presented in a standard format for the purposes ofprocurement and performance analysis:measurement of short-and long-term on-site photovoltaic-system performance;comparison between on-site measured and projected performance,both extrapo-lated to standard test conditions(STC).Specialized documents related to specific applications and/or to specific uses(designing,performance prediction and measurement)may be issued,if necessary.NOTE-The minimum requirements,when applicable,are represented in boxes in the figures and the text.Recommended optional requirements are also given.ExampleUNnominal voltageminimum requirementWWeightoptional requirementThe numbering of subclauses is arbitrary and may not be the same for specific datasheets.2 PV-system descriptlon2.1 Array fieldSee annex A for example of array field components.2.1.1 ModulesIts characteristics as defined by the data sheetsPmaxpeak power at STC(W)Aeoverall area(including frame)(m23)2.1.2Panelsnnumber of modules in a panelApoverall panel area(m2)(including frame,module inter spacing.reflectors,etc.)