考虑重构的含可再生能源配电网电压控制模型与算法

发布时间：2018-07-08 20:11

本文选题：电压控制 + 机会约束　；参考：《电力系统自动化》2017年18期

【摘要】：风电、光伏等分布式电源高渗透并入10kV中压配电网,将导致系统运行经济性与电压质量等问题,若不加以有效管控,则难以充分消纳可再生能源。为实现可再生能源接入下配电网电压安全的主动管控,提出兼顾配电网结构灵活性与电压调节资源能力的机会约束双层优化模型。模型上层以配电网动态重构为手段,确保长时间尺度内的经济运行原则;下层以馈线自动调压器控制策略为对象,实现局部支路电压水平优化。为提高算法效率,利用二阶锥法松弛潮流约束,并采用库恩—塔克(KKT)条件将模型等效转化为单层决策模型。算例结果表明,所提方法通过主动重构技术协调局部电压调节资源,可实现可再生能源接入下配电网的电压安全运行控制。
[Abstract]:High permeability of wind power, photovoltaic and other distributed power sources into 10kV medium voltage distribution network will lead to the problems of system operation economy and voltage quality, if not effectively controlled, it will be difficult to fully absorb renewable energy. In order to realize the active control of distribution network voltage security under renewable energy access, an opportunity-constrained bilevel optimization model is proposed, which takes into account the flexibility of distribution network structure and the capacity of voltage regulation resources. The upper layer of the model takes the dynamic reconfiguration of the distribution network as the means to ensure the economic operation principle in a long time scale, and the lower layer takes the control strategy of the feeder automatic voltage regulator as the object to realize the optimization of the local branch voltage level. In order to improve the efficiency of the algorithm, the second-order cone method is used to relax the power flow constraints, and the KKT condition is used to transform the model into a single-layer decision model. The simulation results show that the proposed method can coordinate local voltage regulation resources through active reconfiguration technology and can realize the voltage safe operation control of distribution network under renewable energy access.
【作者单位】：四川大学电气信息学院;国网福建省电力有限公司电力科学研究院;国网福建省电力有限公司厦门供电公司;
【基金】：国家高技术研究发展计划(863计划)资助项目(2014AA051901) 四川省应用基础研究计划资助项目(2015JY0128) 四川省电力电子节能技术与装备重点实验室开放基金资助项目(szjj2014-012)~~
【分类号】：TM714.2

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