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Forecast of Power Generation for Grid-Connected Photovoltaic System Based on Markov Chain

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2 Author(s)
Ying-zi Li ; Coll. of Inf. & Electr. Eng., Beijing Univ. of Civil Eng. & Archit., Beijing ; Jin-cang Niu

A grid-connected photovoltaic system has the characteristics of time-varying and random. A Markov chain model of the power generation forecast was built based on the Markov decision theory according to the 6 kW PV system operating data. The initial formation probability matrix and transition matrix for power generation forecast have been obtained. After considering the weather conditions, solar radiation and other specific factors, if the statistical sample is large enough, the theoretical calculations are very close to the actual results. The results show forecast of power generation for grid-connected photovoltaic system based on Markov chain is feasible, correct and effective. The initial state and termination status have the character of good correlation between the transfer matrix and the results are more relatively reliable.

Published in:

Power and Energy Engineering Conference, 2009. APPEEC 2009. Asia-Pacific

Date of Conference:

27-31 March 2009