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公式章 1 节 1山区配电网水光储协同消纳与多目标优化方法

Coordinated consumption and Multi-objective Optimization of Hydropower- Photovoltaics- Storage in Mountainous Distribution Networks

  • 摘要: 针对山区配电网中分布式光伏与小水电并存接入引发的反向潮流、电压越限及弃光弃水问题,提出一种水光储分层协同消纳与多目标优化方法。该方法通过构建微观台区就地消纳、中观区域互济和宏观主配网协同的多层级架构,建立兼顾弃光弃水率、电压偏差和运行成本的优化模型。基于24 h典型日算例进行验证,协同优化后最大节点电压由1.031 p.u.降至1.014 p.u.,最小节点电压由0.952 p.u.升至0.982 p.u.,电压偏差均值降低56.25%,弃光率和弃水率分别降低约50.0%和45.7%,提升了新能源消纳能力和运行经济性。

     

    Abstract: To address reverse power flow, voltage violation, and photovoltaic and hydropower curtailment caused by the simultaneous integration of distributed photovoltaics and small hydropower in mountainous distribution networks, a hierarchical hydropower-photovoltaic-storage coordinated consumption and multi-objective optimization method is proposed. The method constructs a multi-level framework consisting of micro-level local consumption in distribution transformer areas, meso-level regional mutual support, and macro-level coordination between the main grid and distribution network. An optimization model considering photovoltaic and hydropower curtailment rates, voltage deviation, and operating cost is established. A 24 h typical daily case study is conducted for verification. After coordinated optimization, the maximum node voltage decreases from 1.031 p.u. to 1.014 p.u., the minimum node voltage increases from 0.952 p.u. to 0.982 p.u., the average voltage deviation decreases by 56.25%, and the photovoltaic and hydropower curtailment rates are reduced by about 50.0% and 45.7%, respectively. The results show that the proposed method improves renewable energy consumption capacity and operational economy.

     

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