processding59.pdf - page 289

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êćøćÜìĊęǰ1 ÖćøđðøĊ÷ïđìĊ÷ïĕüïĎúúŤóćøćöĉđêĂøŤ ÝćÖøąđïĊ÷ïüĉíĊ Maximum Likelihood, Least Square, Ēúą WAsP ×ĂÜ
ך ĂöĎúúöÿëĉêĉøć÷ðŘ ÿëćîĊüĉÝĆ÷óúĆ ÜÜćîúöđìóćìĊęøąéĆ ïÙüćöÿĎÜ 120 m ךĂöĎúúöÿëĉêĉøć÷ðŘ (ÿĉÜĀćÙö ó ý 2557 –
ÖøÖãćÙö ó ý 2558)
Algorithm Weibull k Weibull c
(m/s) Mean (m/s) Proportion
Above Mean
Power Density
(W/m2) R 2
Maximum
likelihood 1.621 5.135 4.599 0.433 145.2 0.87752
Least square 1.378 5.405 4.939 0.413 229.1 0.79026
WAsP 2.170 5.596 4.956 0.464 131.8 0.97030
Actual data (525,598 time steps) 4.641 0.464 131.8 -
êćøćÜìĊęǰ2 ÖćøđðøĊ÷ïđìĊ÷ïĕüïĎúúŤóćøćöĉđêĂøŤ ÝćÖøąđïĊ÷ïüĉíĊ Maximum Likelihood, Least Square, Ēúą WAsP ×ĂÜ
ך ĂöĎúúöÿëĉêĉøć÷ðŘ ÿëćîĊüĉÝĆ÷óúĆÜÜćîúöđìóćìĊęøąéĆïÙüćöÿĎÜ 120 m ךĂöĎúúöÿëĉêĉđéČĂîÿĉÜĀćÙöóý 2557
Algorithm Weibull k Weibull c
(m/s) Mean (m/s) Proportion
Above Mean
Power Density
(W/m2) R 2
Maximum
likelihood 0.650 1.832 2.503 0.294 237.6 0.06238
Least square 0.750 2.350 2.799 0.320 191.4 0.10998
WAsP 2.852 3.835 3.417 0.487 35.3 0.93188
Actual data 44,640 time steps 2.275 0.487 35.3 -
êćøćÜìĊęǰ3 ÖćøđðøĊ÷ïđìĊ÷ïĕüïĎúúŤóćøćöĉđêĂøŤ ÝćÖøąđïĊ÷ïüĉíĊ Maximum Likelihood, Least Square, Ēúą WAsP ×ĂÜ
ך ĂöĎúúöÿëĉêĉøć÷ðŘ ÿëćîĊüĉÝĆ÷óúĆÜÜćîúöđìóćìĊęøąéĆïÙüćöÿĎÜ 120mךĂöĎúúöÿëĉ êĉđéČĂîÖĆî÷ć÷îóý 2557
Algorithm Weibull k Weibull c
(m/s) Mean (m/s) Proportion
Above Mean
Power Density
(W/m2) R 2
Maximum
likelihood 2.109 4.648 4.116 0.461 77.5 0.95968
Least square 1.930 4.742 4.206 0.452 90.2 0.93672
WAsP 2.443 4.833 4.286 0.474 77.4 0.97388
Actual data (43,200 time steps) 4.131 0.474 77.4 -
êćøćÜìĊęǰ4 ÖćøđðøĊ÷ïđìĊ÷ïĕüïĎúúŤóćøćöĉđêĂøŤ ÝćÖøąđïĊ÷ïüĉíĊ Maximum Likelihood, Least Square, Ēúą WAsP ×ĂÜ
ך ĂöĎúúöÿëĉêĉøć÷ðŘ ÿëćîĊüĉÝĆ÷óúĆÜÜćîúöđìóćìĊęøąéĆïÙüćöÿĎÜ 120 m ךĂöĎúúöÿëĉêĉđéČĂîêčúćÙöóý 2557
Algorithm Weibull k Weibull c
(m/s) Mean (m/s) Proportion
Above Mean
Power Density
(W/m2) R 2
Maximum
likelihood 0.961 2.698 2.747 0.362 84.4 0.47387
Least square 0.832 2.886 3.183 0.338 198.7 0.41169
WAsP 3.024 4.113 3.674 0.491 42.5 0.82398
Actual data (44,640 time steps) 2.703 0.491 42.5 -