基于目标级联分析法的多微网主动配电系统自治优化经济调度

发布时间：2018-11-12 17:43

【摘要】：主动配电系统是未来配电网发展的趋势。随着电力体制改革不断深化,更多具有随机性的分布式电源以微网群形式并入配网;与此同时,各种售电主体在电力市场环境下的利益博弈,给传统的经济调度带来巨大挑战。为此,针对含多微网主动配电系统的分散自治特点,提出一种基于目标级联分析理论的优化调度模型和求解方法,基本思路为:依据利益主体的不同,以生产效益最优为目标,采用机会约束描述分布式电源出力、负荷预测误差等多种不确定性因素。在对配网与微网调度的精细化建模基础上,引入目标级联分析方法,将微网与配网作为不同利益主体,通过联络线功率等效为虚拟发电机与虚拟负荷实现配网与微网运行的解耦,并实现微网自治模型与配网优化模型的并行求解。基于改进的IEEE33节点系统和某实际配电网的算例表明,目标级联分析法应用于含多微网主动配电系统的动态经济调度是有效的,且计算效率和收敛性都能得到满足。
[Abstract]:Active distribution system is the trend of distribution network development in the future. With the deepening of power system reform, more and more random distributed power sources are incorporated into the distribution network in the form of micro-grid group. At the same time, the benefit game of various power sellers in the power market environment brings great challenges to the traditional economic dispatch. In view of the characteristics of decentralized autonomy of active distribution system with multi-microgrid, this paper presents an optimal scheduling model and solution method based on the theory of cascading analysis of objectives. The basic ideas are as follows: according to the different interests of the main body, the goal is to optimize the production benefit. Opportunistic constraints are used to describe many uncertain factors, such as distributed power generation, load forecasting error and so on. On the basis of meticulous modeling of distribution network and microgrid scheduling, the method of object cascade analysis is introduced, and microgrid and distribution network are regarded as different stakeholders. The tie-line power is equivalent to virtual generator and virtual load to realize the decoupling of distribution network and microgrid operation, and the parallel solution of the autonomous model of micro-grid and the optimization model of distribution network. An example based on the improved IEEE33 node system and a practical distribution network shows that the application of the objective cascade analysis method to the dynamic economic dispatch of the active distribution system with multi-microgrid is effective, and the computational efficiency and convergence can be satisfied.
【作者单位】：华南理工大学电力学院;
【基金】：国家重点基础研究发展计划项目(973计划)(2013CB228205) 国家自然科学基金青年基金资助项目(50907023)~~
【分类号】：TM73

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