Add example csv files for power- and cp curves

Author: SabineHaas

windpowerlib/data/example_power_coefficient_curves.csv

@@ -0,0 +1,3 @@
+,turbine_id,p_nom,0,0.5,1,1.5,2,2.5,3,3.5,4,4.5,5,5.5,6,6.5,7,7.5,8,8.5,9,9.5,10,10.5,11,11.5,12,12.5,13,13.5,14,14.5,15,15.5,16,16.5,17,17.5,18,18.5,19,19.5,20,20.5,21,21.5,22,22.5,23,23.5,24,24.5,25,25.5,26
+0,DUMMY 1,300000,0,,0,,0,,0,0,0.13,,0.38,,0.46,,0.48,,0.47,,0.44,,0.4,,0.36,,0.31,,0.17,,0.23,,0.2,,0.18,,0.14,,0.11,,0.1,,0.09,,0.07,,0.05,,0.04,,0.04,,0.03,,0
+1,DUMMY 2,600000,0,,0,,0,,0.16,0.29,0.35,0.38,0.4,0.41,0.42,0.43,0.43,0.44,0.44,0.44,0.44,0.43,0.42,0.39,0.36,0.32,0.29,0.26,0.23,0.2,0.18,0.16,0.15,0.14,0.12,0.11,0.1,0.09,0.09,0.08,0.07,0.07,0.06,0.06,0.05,0.05,0.05,0.04,0.04,0.04,0.04,0.03,0.03,0,0

windpowerlib/data/example_power_curves.csv

@@ -0,0 +1,3 @@
+,turbine_id,p_nom,0,0.5,1,1.5,2,2.5,3,3.5,4,4.5,5,5.5,6,6.5,7,7.5,8,8.5,9,9.5,10,10.5,11,11.5,12,12.5,13,13.5,14,14.5,15,15.5,16,16.5,17,17.5,18,18.5,19,19.5,20,20.5,21,21.5,22,22.5,23,23.5,24,24.5,25,25.5,26
+0,DUMMY 3,150000,0,0,0,0,0,0,0,18000,34000,70000,10000,150000,190000,260000,330000,420000,510000,620000,740000,880000,1020000,1180000,1330000,1420000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,1500000,0,
+4,DUMMY 4,225000,0,,0,,0,,0,,4000,,22000,,46000,,76000,,111000,,147000,,184000,,219000,,249000,,274000,,290000,,297000,,302000,,307000,,307000,,305000,,295000,,280000,,260000,,240000,,230000,,225000,0,