PHOTOVOLTAIC POWER GENERATION SYSTEM
PROBLEM TO BE SOLVED: To provide a photovoltaic power generation system capable of preventing occurrence of hot spots by significantly reducing the current flowing through an abnormal solar cell module.SOLUTION: In a photovoltaic power generation system (1), a plurality of solar cell modules (10), e...
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a photovoltaic power generation system capable of preventing occurrence of hot spots by significantly reducing the current flowing through an abnormal solar cell module.SOLUTION: In a photovoltaic power generation system (1), a plurality of solar cell modules (10), each of which includes power lines (11a, 11b) for power extraction, are arranged to be electrically connected. If an abnormality occurs in a part of the solar cell modules (10), connections between power lines (11a, 11b) of an abnormal solar cell module (10e) and power lines (11a, 11b) of normal solar cell modules (10) are released, and power lines (11a, 11b) of the normal solar cell modules (10) are reconnected to each other via a power cable (18) to continue power generation operation, while a negative electrode side power line (11a) and a positive electrode side power line (11b) of the abnormal solar cell module (10e) are short-circuited via an electrical resistor (17).SELECTED DRAWING: Figure 3
【課題】異常発生太陽電池モジュールに流れる電流を格段に小さくすることでホットスポットの発生を防止可能にした太陽光発電システムを提供する。【解決手段】電力取出し用の電力線(11a,11b) を夫々備えた複数の太陽電池モジュール(10)を並べて電気的に接続してなる太陽光発電システム(1) において、一部の太陽電池モジュール(10)に異常が発生した場合には、異常発生太陽電池モジュール(10e) の電力線(11a,11b) と正常な太陽電池モジュール(10)の電力線(11a,11b) との接続を解除し、正常な太陽電池モジュール(10)同士の電力線(11a,11b) を電力ケーブル(18)を介して再接続して発電運転を継続すると共に、異常発生太陽電池モジュール(10e) の負極側電力線(11a) と正極側電力線(11b) とは電気抵抗器(17)を介して短絡させる。【選択図】図３ |
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