考虑灵活资源与风电协调运行的智能电网可靠性分析与优化研究

With the development of smart grid, flexible resources can actively participates in power system operation with high penetration of wind power. However the uncertainties caused by interactions between flexible resources and wind power may affect secure and reliable operation of power systems. Therefore it is important to evaluate reliabilities of smart grid considering interactions between flexible resources and wind power. Meanwhile, for balancing system risk and economic operation in the new environment, it is also important to develop reliability based optimal dispatch methods for smart grids..This proposed project analyzes basic mechanism causing multiple uncertainties of different types of flexible resources, and establishes reliability models of these flexible resources. Typical models for evaluating flexible resources’ dispatch-able abilities are also studied in the project, which can be used to reduce the reliance of traditional generating units for providing operation reserve for handling the fluctuations of wind power. A novel reliability evaluation method for power systems is developed considering the coupling effects between wind power and flexible resources. Based on above research, a multi-time scale dispatch model considering cooperation between wind power and flexible resources is developed, which can satisfy system reliability requirements.

随着智能电网的发展，灵活资源如电动汽车、空调、小型分布式电源等可积极参与到高渗透风电的消纳。但高渗透风电及灵活资源参与系统运行的双向互动可能会给电网安全可靠运行造成重大影响，因此有必要对风电与灵活资源协调运行的智能电网进行可靠性评估。同时，为均衡系统运行的经济性与风险性，对考虑风电与灵活资源互动的智能电网开展基于可靠性的调度优化研究也至关重要。.项目通过分析多重不确定因素对不同种类灵活资源的作用机理，探索不确定因素—灵活资源的映射关系，建立灵活资源可靠性模型；定量评估不同互动机制下典型灵活资源在其可靠性影响下的调度潜力，降低系统对传统机组消纳风电的依赖；建立综合统筹高渗透风电与灵活资源互动的系统多状态可靠性评估模型；在考虑系统可靠性的基础上，建立风电和灵活资源协同运行的多时间尺度的调度优化决策机制，满足未来智能电网安全可靠、经济高效、节能低碳的运行需求。

随着智能电网的发展，灵活资源可积极参与到高渗透风电的消纳。但高渗透风电及灵活资源参与系统运行的双向互动可能会给电网安全可靠运行造成重大影响，同时高渗透风电的并网运行及灵活资源的使用也会对系统运行的经济性产生影响，因此研究基于风电与灵活资源协调运行的智能电网可靠性水平和调度优化迫在眉睫。本项目取得的研究成果包括：1）构建了风电可靠性模型，建立了发电侧灵活资源可靠性模型和需求侧灵活资源可靠性模型；2）分析了典型灵活资源可调度潜力机理，建立了灵活资源可调度潜力静态和动态评估体系，提出了基于不同响应机制的灵活资源可调度潜力评估方法；3）分析了供需双侧互动机理，提出了考虑供需双侧互动的电力系统可靠性评估方法，建立了计及负运行备用的含高比例风电的电力系统可靠性评估模型；4）分析了风电和灵活资源协同影响，构建了考虑可靠性的风电和灵活资源协同优化的日前-日间-实时多时间尺度调度决策模型。.项目的科学意义体现在两个方面。首先，项目将高渗透风电和灵活资源互动引入了电力系统可靠性分析中，建立了考虑供需双侧灵活资源互动的可靠性评估模型，拓展了复杂系统可靠性理论体系；其次，项目建立了风电和灵活资源协同优化模型，使电力系统运行更加安全可靠、经济高效、节能低碳，为智能电网的进一步发展奠定理论基础。 .本项目共发表/录用论文41篇，其中SCI论文21篇，EI论文19篇；培养硕、博士研究生9名，其中已毕业4人；申请发明专利9项，其中授权3项；项目负责人参与国际会议进行大会报告3次；项目组成员参加国际会议15次；3名博士研究生与国际知名大学进行联合培养。