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新型电力系统背景下虚拟电厂多维度优化调度和调控策略研究

Research on Multidimensional Optimal Scheduling and Control Strategy of Virtual Power Plant Under the Background of New Type Power System

  • 摘要: 虚拟电厂通过聚合灵活可调资源和智能化调度调控策略,可以实现能源资源的高效利用,提高能源系统的可靠性和灵活性,进一步促进网荷友好互动。文中对新型电力系统背景下虚拟电厂的优化调度和调控策略2个方面展开研究分析。首先,阐述了虚拟电厂的控制模式及调度控制分层架构,并从优化目标、边界、时间尺度、优化方法4个视角剖析了虚拟电厂调度调控内涵。然后,基于净利润最大化、投资商总收益最大化、综合指标效益最大化3个维度概述虚拟电厂优化调度方案。其次,根据工程应用场景需求,介绍并比较了虚拟电厂应用中采取的多目标、分层、多时间尺度、优先级4种控制策略。最后,以典型光储荷一体化型虚拟电厂为例,分析了电源型、负荷型、储能型虚拟电厂的优化调度与调控策略方案。未来随着新型电力系统建设提速、优化调度及调控策略的日益完善,虚拟电厂将成为促进我国电网供需平衡的有效手段,预计市场前景广阔。

     

    Abstract: By aggregating flexible and adjustable resources and intelligent scheduling and control strategies, virtual power plant can realize efficient use of energy resources, improve the reliability and flexibility of energy system, and further promote the friendly interaction between power grid and load. The optimal scheduling and control strategy of virtual power plant under the background of new type power system are studied and analyzed in this paper. Firstly, the control mode and hierar-chical structure of virtual power plant are described, and the connotation of virtual power plant scheduling control is analyzed from four perspectives: optimization objective, boundary, time scale and optimization method. Secondly, the optimal scheduling scheme of virtual power plant is summarized based on three dimensions: net profit maximization, investor total income maximization and comprehensive index benefit maximization. Then, according to the requirements of engineering application scenarios, four control strategies adopted in virtual power plant are introduced and compared, which are multi-objective, layered, multi-time scale and priority. Finally, taking a typical PV, energy storage and load integrated virtual power plant as an example, the optimal scheduling and control strategies of power, load and energy storage type virtual power plants are analyzed. In the future, with the acceleration of the construction of new type power systems, the optimization of optimal scheduling and control strategy, virtual power plant will become an effective means to promote the balance of supply and demand in China's power grid, and the market prospect is expected to be broad.

     

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