基于合作博弈的虚拟电厂与配电网协调调度研究

发布时间：2019-01-04 20:43

【摘要】：采用可再生能源发电的分布式电源具有低污染、高效率等优势,近年来发展迅速。但是可再生能源发电不可避免的随机性、波动性和间歇性等特点导致分布式电源单机并网成本高、管理困难。随着以风电、光电等可再生能源渗透率的增大,分布式电源与配电网的协调优化调度问题具有重要的现实意义。本文研究主要针对分布式电源虚拟电厂与配电网的协调调度问题,基于合作博弈理论对虚拟电厂与配电公司的经济调度问题以及虚拟电厂主动参与配电网及其常规机组的协调优化问题进行了研究。针对虚拟电厂与配电公司的经济调度问题,本文采用场景抽样生成与缩减技术处理风电和光伏发电出力的不确定性,形成含概率信息的经典场景,在此基础上,根据合作博弈理论,建立了基于场景分析的虚拟电厂单独调度、与配电公司联合调度模型,分析了含风光水的虚拟电厂与配电公司的合作空间以及利益公平分配问题。算例采用某风光水分布式电源示范工程和当地电网实际数据进行分析,结果表明风光发电出力的预测精度、配电负荷曲线、备用价格等因素直接影响了虚拟电厂和配电网的合作空间和利益分配方案,并为分析分布式电源对配网影响、虚拟电厂和配电公司合作谈判、优化虚拟电厂各类电源容量配置等提供了定量的依据。针对虚拟电厂主动参与配电网的协调优化问题,本文提出了配电网在安全经济运行前提下积极消纳可再生能源的机组组合策略：在分布式电源组成的虚拟电厂是否放弃接受配电网统一调度的两种情况下,建立了两种含虚拟电厂的配电网机组组合模型,采用合作博弈理论分析了虚拟电厂／配电网合作空间,并以某风光水分布式电源示范工程数据,分析了不同配电网电源结构、日负荷需求、风光预测精度、风光渗透率以及多虚拟电厂参与时配电网机组组合的特点、调度成本构成和合作收益分配情况,为配电网电源规划以及与虚拟电厂合作运行谈判提供了定量分析的方法。
[Abstract]:Distributed power generation using renewable energy has the advantages of low pollution and high efficiency, and has developed rapidly in recent years. However, the randomness, volatility and intermittency of renewable power generation inevitably lead to high cost and difficulty in management of distributed power generation. With the increase of the permeability of renewable energy, such as wind power, photoelectricity and so on, it is of great practical significance to coordinate and optimize the dispatch of distributed power and distribution network. This paper focuses on the coordination and dispatch of distributed power virtual power plant and distribution network. Based on the cooperative game theory, the economic dispatch problem of virtual power plant and distribution company and the coordination and optimization problem of active participation of virtual power plant in distribution network and its conventional units are studied. Aiming at the economic dispatch problem of virtual power plant and distribution company, this paper adopts scene sampling generation and reduction technology to deal with the uncertainty of wind power generation and photovoltaic power generation, and forms a classical scenario with probability information. Based on the theory of cooperative game, the model of separate dispatching of virtual power plant based on scene analysis and joint dispatching model with distribution company is established. The cooperative space between virtual power plant and distribution company with scenic water and the problem of fair distribution of benefits are analyzed. The example is analyzed by the demonstration project of a wind and water distributed power supply and the actual data of the local power grid. The results show that the forecasting accuracy and the distribution load curve of the wind power generation are shown. The reserve price and other factors directly affect the cooperative space and benefit distribution scheme between the virtual power plant and the distribution network. In order to analyze the influence of distributed generation on the distribution network, the virtual power plant and the distribution company negotiate jointly. The optimization of power supply capacity of virtual power plant provides a quantitative basis. Aiming at the problem of active participation in coordination and optimization of distribution network in virtual power plant, In this paper, the author puts forward the unit combination strategy of actively absorbing renewable energy under the premise of safe and economical operation of the distribution network: whether the virtual power plant composed of distributed generation gives up accepting the unified dispatch of the distribution network, In this paper, two kinds of combinatorial models of distribution network with virtual power plant are established, and the cooperative space of virtual power plant / distribution network is analyzed by using cooperative game theory, and different power supply structures of distribution network are analyzed based on the demonstration project data of distributed power generation with some scenery water. Daily load demand, forecasting precision of scenery, wind permeability, characteristics of distribution network unit combination when multiple virtual power plants participate, dispatch cost composition and distribution of cooperative income, It provides a quantitative analysis method for power planning of distribution network and negotiation with virtual power plant.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM73

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