An Operating Method Using Prediction of Photovoltaic Power for a Photovoltaic-Diesel Hybrid Power Generation System

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  • 太陽光発電電力予測を用いた太陽光·ディーゼルハイブリッド発電システム運用法
  • 太陽光発電電力予測を用いた太陽光・ディーゼルハイブリッド発電システム運用法
  • タイヨウコウ ハツデン デンリョク ヨソク オ モチイタ タイヨウコウ ディーゼル ハイブリッド ハツデン システム ウンヨウホウ

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Abstract

This paper describes a novel operating method using prediction of photovoltaic (PV) power for a photovoltaic-diesel hybrid power generation system. The system is composed of a PV array, a storage battery, a bi-directional inverter and a diesel engine generator (DG). The proposed method enables the system to save fuel consumption by using PV energy effectively, reducing charge and discharge energy of the storage battery, and avoiding low-load operation of the DG. The PV power is simply predicted from a theoretical equation of solar radiation and the observed PV energy for a constant time before the prediction. The amount of fuel consumption of the proposed method is compared with that of other methods by a simulation based on measurement data of the PV power at an actual PV generation system for one year. The simulation results indicate that the amount of fuel consumption of the proposed method is smaller than that of any other methods, and is close to that of the ideal operation of the DG.

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