Cutting wind generator power chart peaks to mitigate power forecast error

• Published in: Engineering for Rural Development (Latvia) no. 10/2011; pp. 294 - 298
• Main Authors: Toom, K., Estonian Univ. of Life Sciences, Tartu (Estonia), Jurjenson, K., Estonian Univ. of Life Sciences, Tartu (Estonia), Juhanson, T., Eesti Energia AS, Tallinn (Estonia), Annuk, A., Estonian Univ. of Life Sciences, Tartu (Estonia)
• Format: Journal Article
• Language: English
• Published: Jelgava (Latvia) Latvia University of Agriculture 2011
• Subjects: ELECTRICITY GENERATORS; ENERGIA EOLICA; ENERGIE EOLIENNE; ENERGY GENERATION; ESTONIA; ESTONIE; FORECASTING; GENERACION DE ENERGIA; GENERADORES DE ELECTRICIDAD; GENERATEUR D'ELECTRICITE; http://www.fao.org/aos/agrovoc#c_10672; http://www.fao.org/aos/agrovoc#c_12103; http://www.fao.org/aos/agrovoc#c_24836; http://www.fao.org/aos/agrovoc#c_25730; http://www.fao.org/aos/agrovoc#c_29582; http://www.fao.org/aos/agrovoc#c_3041; http://www.fao.org/aos/agrovoc#c_6513; http://www.fao.org/aos/agrovoc#c_8394; INVESTIGACION; LATVIA; LETONIA; LETTONIE; PRODUCTION ENERGETIQUE; RECHERCHE; TECHNIQUE DE PREVISION; TECNICAS DE PREDICCION; VELOCIDAD DEL VIENTO; VITESSE DU VENT; WIND POWER; WIND SPEED
• ISSN: 1691-3043

Under certain circumstances, the transmission system operator (TSO) can face the need to reduce the power output of the wind parks. In a market based setup the wind power producers will normally pay for the balancing costs of wind power. Therefore, the more accurate the forecast of wind power, the lower the balancing costs for the wind power producers will be. From a socio-economic perspective, better forecasting will reduce the total generation costs due to the more optimal dispatch of power plants. The operators of the wind parks integrated into the transmission network are responsible for presenting a 24h-forecast of their output power to TSO. The real wind power differs from the forecast one. This difference needs balancing by the rest of the energy system. In the Estonian conditions, it means the regulation of the capacity of oil-shale-fuelled power plants which induces an accelerated wear, additional emissions and fuel consumption of the power plants. The reason why wind park output power is particularly difficult to forecast at wind speeds of 6-10 m·s-1 is due the fact that electricity generation of wind turbines changes markedly between these speeds.