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考虑复杂预想场景下光伏高效利用的微电网综合规划

DOI: 10.13334/j.0258-8013.pcsee.2014.25.008, PP. 4259-4269

Keywords: 微电网,分布式光伏发电,复杂预想场景,双层规划,综合优化方法

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Abstract:

针对传统微电网(micro-grid,MG)规划方法未充分计及实际运行工况多样性的缺点,提出一种考虑复杂预想场景下光伏(photovoltaic,PV)高效利用的MG综合规划方法。通过分析量化实际条件下网络故障对PV的受迫影响及其经济代价,引入安全风险预期系数,建立可综合反映PV在正常及故障预想场景下对MG系统贡献的复合评价函数。鉴于优化目标之间存在的主从逻辑差异,分别以系统投资运行成本最小和全场景下PV效能利用最优作为上、下层目标函数,构建了同时考虑网架重构与PV、储能选址定容的MG双层综合规划模型,并采用和声搜索和基于点估计随机最优潮流相结合的混合算法实现求解。算例分析结果表明,所提方法能够实现MG对分布式PV的灵活高效利用,有效提高实际运行条件下系统的整体预期收益,并可获得满足多样化需求的均衡规划策略。

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