摘要: |
随着分布式家庭光伏系统等小型光储系统应用越来越广泛,其经济运行成为一项重要课题。针对家庭等小型光储联合系统的优化运行问题,提出了一种实时经济调度方法。该方法以对当前时段的储能制定充放电策略为基础,首先建立了模型对当前时段储能的充电成本和下一时段初储能放电收益进行评估,其次依据经济学中边际成本等于边际收益时综合效益最大的原理制定实时经济调度方案。该方法能够在满足家庭光储调度实时性的同时最大程度上追求经济性,从而较好地消除传统实时经济调度方案中储能充放电行为制定的主观性,提升了实时经济调度的优势。最后通过算例验证了所提方法的有效性。 |
关键词: 小型家庭光储系统 实时经济调度 成本收益评估 储能策略 |
DOI:10.7667/PSPC170493 |
投稿时间:2017-04-07修订日期:2017-06-22 |
基金项目:山西省电力公司科技项目(5205H01351y6) |
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Real time economic scheduling method for photovoltaic/battery system based on the evaluation of energy storage charging cost and discharge yield |
LÜ Chenxu |
(Xinzhou Power Supply Company, State Grid Shanxi Electric Power Company, Xinzhou 034000, China) |
Abstract: |
With the application of photovoltaic/battery system such as family photovoltaic/battery system more and more widely, its economic dispatch becomes an important issue. In order to solve the problem of the optimal operation of the family photovoltaic-storage system, a real-time economic dispatch method is proposed, which is based on the charging and discharging strategy of energy storage. In this paper, firstly a model is established to evaluate the energy storage charging cost of the current period and the discharge yield at the beginning of the next period, secondly a real-time economic dispatch method is constructed according to a principle in economics that, when the marginal cost equals the marginal benefit, the comprehensive benefit is the largest. This method can meet the requirement of the real time scheduling of the family photovoltaic-storage system, and at the same time maximize the economic efficiency, therefore the proposed method can maximize the elimination of subjectivity when formulate the behavior strategy of storage in real-time economic dispatch energy storage, so as to enhance the advantages of real-time economic dispatch. Finally, a numerical example is given to demonstrate the effectiveness of the proposed method. |
Key words: photovoltaic-storage system real time economic scheduling evaluation of cost and benefit energy storage strategy |