En­ergy Cal­cu­la­tions

Power Watch India - - GREEN AHEAD -

Cal­cu­lated en­ergy pro­duc­tion val­ues for a wind farm re­quire sev­eral in­puts in or­der to prop­erly eval­u­ate the es­ti­mated en­ergy gen­er­a­tion of a site. The to­pog­ra­phy for a wind farm and the bound­aries of the site may be loaded into the soft­ware as ESRI shape files. The wind flow on the site should be char­ac­ter­ized by on-site mea­sure­ments and ex­trap­o­lated out to the rest of the site, and the his­tor­i­cal air den­sity on the site must be eval­u­ated.

The ef­fi­cien­cies and loss fac­tors spe­cific to the site should be un­der­stood, and a tur­bine lay­out and power curve must be se­lected. Once this ba­sic site in­for­ma­tion has been en­tered, the type of anal­y­sis method cho­sen to cal­cu­late en­ergy is de­pen­dent upon the char­ac­ter­is­tics of the wind farm be­ing as­sessed.

The en­ergy pro­duc­tion of a farm is greatly de­pen­dent upon the wake ef­fects from up­wind tur­bines, and the use of an ac­cu­rate wake model is key to mak­ing an ac­cu­rate es­ti­mate. WindFarmer has sev­eral dif­fer­ent wake mod­els avail­able to take into ac­count the spe­cific chal­lenges of the broad range of wind farms in de­vel­op­ment and in op­er­a­tion within the in­dus­try.

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