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风光蓄互补发电系统容量的改进优化配置方法

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Keywords: 风光蓄互补发电系统,优化配置,分时段优化策略,供电可靠性,入网功率的波动

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Abstract:

风光互补发电系统利用风能与太阳能的互补特性,相比于单独的光伏发电或风力发电,其输出功率波动小。合理配置风电/光伏/储能的容量,既可提高系统供电可靠性,又可降低系统成本。针对风光蓄互补发电系统,提出一种改进的容量优化配置方法,考虑独立和并网两种模式,对风力发电、光伏发电和蓄电池的容量进行最优配置。该方法充分利用风光互补特性,在系统独立运行时,只需较小的蓄电池容量即可保证高供电可靠性,并可减少蓄电池的充放电次数和放电深度;在系统并网运行时,进一步提出采用分时段优化策略来配置所需蓄电池的容量,保证负荷供电需求和入网功率的波动特性满足要求。算例验证了所提改进优化方法的合理性和优越性。

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