含分布式电源及灵活负荷的配电网电量合约市场Electricity Contract Market for Distribution Network With Distributed Generations and Flexible Loads
曹子健;林今;宋永华;
摘要(Abstract):
针对含有分布式电源和灵活负荷的配电网电量合约市场,首先介绍了市场结构、交易流程和合约内容,并对市场中各组成部分进行了建模。利用Copula理论,对分布式电源出力的随机特性及相关性进行计算,从而在已知预测出力情况下得到分布式电源实际出力的条件概率密度。在此基础上,以最小化总购电成本为目标,考虑本地电量平衡概率约束,建立了电量合约市场集中出清优化模型。基于Shapley值衡量负荷灵活性对降低购电总成本的贡献,进而提出了购电成本分摊方法。通过算例分析了分布式电源自身预测精度、与其他电源互补性以及负荷灵活性对最终合约电价的影响。验证了所提出的模型能够将电源和负荷的特性反应在最终的电价上,利用市场的手段来匹配分布式电源的不确定性和灵活负荷的灵活性,从而减少配电网给输电网带来的电量平衡方面的压力,促进分布式电源的就地消纳。
关键词(KeyWords): 配电网;电力市场;电量合约;分布式电源;灵活负荷
基金项目(Foundation): 国家重点研发计划:政府间国际科技创新合作重点专项(2016YFE0102600);; 国家自然科学基金项目(51577096,51761135015)~~
作者(Author): 曹子健;林今;宋永华;
Email:
DOI: 10.13335/j.1000-3673.pst.2018.1975
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