Application of nowcasting to reduce the impact of irradiance ramps on PV power plants

Special Issue on ‘EU PVSEC 2023: State of the Art and Developments in Photovoltaics’, edited by Robert Kenny and João Serra

Open Access

Table A.1

Error metrics root mean squared error, mean absolute error, and bias for all days of the 18-day dataset and cumulative. All three metrics include the absolute (abs.) values [KWh] and relative to max of the respective day [%]. Further, the values for percentile P50 are given. All days are included individually.

		RMSE		MAE		BIAS
Day	Strategy	abs	max	abs	max	abs	max
all days	P50	2262	12.0	1291	6.9	95	0.5
Median	P50	1984	10.7	1253	6.9	122	0.7
Mean	P50	2067	11.3	1305	7.1	108	0.6
Min	P50	508	2.7	322	1.7	−858	−4.7
Max	P50	4057	21.7	2673	14.3	1057	5.7
2020-03-09	P50	4057	21.7	2673	14.3	1057	5.7
2020-03-16	P50	1948	10.4	1180	6.3	−35	−0.2
2020-03-22	P50	970	5.2	442	2.3	52	0.3
2020-04-11	P50	515	2.9	379	2.1	−93	−0.5
2020-04-12	P50	2614	14.4	1684	9.3	−858	−4.7
2020-04-24	P50	508	2.7	322	1.7	38	0.2
2020-06-07	P50	2666	14.2	1629	8.7	246	1.3
2020-06-17	P50	1872	10.4	1208	6.7	−220	−1.2
2020-06-27	P50	2884	15.8	1687	9.2	−610	−3.3
2020-07-10	P50	2090	11.3	1298	7.0	456	2.5
2020-07-20	P50	2603	13.9	1806	9.7	487	2.6
2020-07-21	P50	3196	17.1	2025	10.8	472	2.5
2020-08-01	P50	1408	8.1	864	5.0	243	1.4
2020-08-23	P50	2021	11.0	1325	7.2	192	1.0
2020-09-01	P50	1039	5.5	559	3.0	−263	−1.4
2020-09-04	P50	3693	20.2	2617	14.3	528	2.9
2020-09-25	P50	1708	9.1	1054	5.6	35	0.2
2020-10-05	P50	1409	9.1	748	4.9	212	1.4

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