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光伏发电分布式防孤岛保护系统

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摘要 孤岛现象是指电网突然失压时,并网光伏发电系统仍保持对电网中的临近部分线路供电状态的一种现象。由于光伏逆变器在工作的过程中可以等效于电流源,在脱网的情况下无法维持稳定电压,因此,当孤岛现象发生的时候根据具体负荷状态的不同,电网可能出现电压升高、电压下降,也有可能处在暂时地负荷平衡,电压维持不变。
出处 《农村电气化》 2013年第12期47-48,共2页 Rural Electrification
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