Least Square Based Prediction for the Transient Output of Solar Power Source
Abstract
The transient output prediction of solar power source is of great significance for power grid stability analysis, power quality control and fault diagnosis. To this goal, the discrete model and linear prediction model of ideal solar power source were established. Then, a regularized least square prediction scheme was proposed to estimate the unchanged model parameters. When the power source model parameters vary, the prediction model parameters are continuously updated in real-time by the Sliding Rectangle Window (SRW) Recursive Least Square (RLS) method. Unlike the standard RLS, SRW-RLS adopts a data update strategy based on sliding rectangle window, which improves the tracking performance and prediction accuracy. The experimental results show that the proposed prediction schemes achieve good prediction accuracy and SRW-RLS is able to adapt well to the changes in the parameters of power source model.
Keywords: solar power source, transient model, prediction, least-square
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DONG C Y，ZHAO J H，WEN F S，et al. From smart grid to energy internet：basic concept and research framework [J] . Automation of Electric Power Systems，2014，38（15）：1—11.（In Chinese）
TIAN S M，LUAN W P，ZHANG D X，et al. Technical forms and key technologies on energy internet[J] . Proceedings of the CSEE， 2015，35（14）：3482-3494.（In Chinese）
MA Z，ZHOU X X，SHANG Y W，et al. Exploring the concept，key technologies and development model of energy internet [J] . Power System Technology，2015，39（11）：3014—3022.（In Chinese）
HUANG A Q，CROW M L，HEYDT G T，et al. The future renewable electric energy delivery and management （FREEDM） system：the energy internet[J] . Proceedings of the IEEE，2011，99 （1）：133—148.
HUANG H L，CHEN Q，LI G. Research progress in low grade energy generation system[J] . Thermal Power Generation，2015，44 （8）：8—13.（In Chinese）
LI D H，WANG H X，ZHU X D，et al. Research on several critical problems of photovoltaic grid -connected generation system [J] . Power System Protection and Control，2010，38（21）：208—214. （In Chinese）
ZHANG Z B，LIU J Z，MEI H M. Study of reactive power compensation characteristics on a three-phase double-stage grid- connected photovoltaic power system [J] . Transactions of China Electrotechnical Society，2011，26（1）：242—246.（In Chinese）
SUN J F，JIAO L W，WU J L，et al. Research on multi -machine dynamic aggregation in wind farm [J] .Power System Technology， 2004，28（7）：59—61.（In Chinese）
WANG Y B，XU H H. Research of capacity limit of grid-connected photovoltaic power station on the basis of chance -constrained programming [J] . Proceedings of the CSEE，2010，30（22）：22— 28.（In Chinese）
WANG Y B，WU C S，LIAO H，et al. Steadystate power flow analyses of large -scale grid -connected photovoltaic generation system [J] . Journal of Tsinghua University （Science and Technology），2009，49（8）：1093—1097.（In Chinese）
VARMA R K，KHADKIKAR V，SEETHAPATHY R. Nighttime application of PV solar farm as STATCOM to regulate grid voltage [J] . IEEE Transactions on Energy Conversion，2009，24（4）：983— 985.
YAO Z Q，ZHANG Q，LIUX M. Research on simulation of a three- phase grid -connected photovoltaic generation system based on PSCAD/EMTDC [J] . Power System Protection and Control， 2010，38（17）：76—81.（In Chinese）
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