随着大规模风电和光伏场站的投运,许多地区出现严重的弃风弃光情况,新能源消纳问题亟待解决。构建了包含抽蓄-风-光-火的联合发电系统调度模型,以运行经济性最优、新能源利用率最大化和功率平衡偏差最小化为优化目标,同时量化分析碳排量和火电波动性,运用改进粒子群算法,求解不同场景下某能源基地抽水蓄能电站夏季典型日和冬季典型日的日出力情况。算例结果表明:抽水蓄能电站的加入使运行成本降低51.37万元,碳排放量减少1 091.96 t,火电稳定性提高5.31%,且增强了联合系统新能源的消纳能力;改变电源容量配置,联合系统各指标与可再生能源渗透率呈非线性相关关系;在多目标优化计算中,给出了合理弃能方式下的各电源优化运行方案。
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