考虑虚拟电厂可信容量的新能源电力系统容量市场出清模型

A capacity market clearing model for renewable energy power system considering unforced capacity of virtual power plant

中文关键词: 容量市场出清模型  新能源电力系统  虚拟电厂  分布式可调节资源  电力系统可靠性  可信容量

英文关键词: capacity market clearing model  renewable energy power system  virtual power plant  distributed and adjustable resources  power system reliability  unforced capacity

中文摘要:

      随着风电和光伏发电装机规模快速增长，系统出现了发电容量充裕度不足的问题。为确保电力系统中的充足发电容量，需要引入容量市场机制。相比于大型火电机组的长建设周期和高投资成本，分布式可调节资源聚合的虚拟电厂（virtual powerplant，VPP）建设周期短、投资小、见效快，是为系统提供发电容量的有效资源。因此，构建了虚拟电厂可信容量（unforcedcapacity，UCAP）计算方法并提出一种考虑虚拟电厂可信容量的新能源电力系统容量市场出清模型。虚拟电厂可信容量计算模型考虑了其功率、能量以及运行特性。容量市场出清模型在考虑发电侧风电、光伏、传统机组的基础上，增加用电侧虚拟电厂参与市场。容量市场出清模型中考虑了高峰容量需求、基本容量需求、电能需求、谷荷需求、爬坡功率需求等系统约束。最后通过算例分析了虚拟电厂可信容量、市场容量总需求量以及新能源装机容量对市场出清结果的影响，验证了本文虚拟电厂可信容量计算方法以及容量市场出清模型的有效性。

英文摘要:

      With the rapid growth of wind and photovoltaic power, the power system is facing issues of insufficient adequacy. To ensure an ample capacity supply, it is necessary to introduce the capacity market mechanism. Compared to the large-scale thermal power plants with long construction periods and high investment costs, virtual power plants（VPP）that aggregate distributed adjustable resources has a shorter construction period, lower investment, and quicker effectiveness. VPPs serve as effective resources for providing generation capacity to the system, they can be used to manage the peak demand. Therefore, a VPP unforced capacity（UCPA）formula and a comprehensive capacity market clearing model which is designed to consider capacity offers including VPP is proposed. The proposed VPP UCAP computation formulas consider power capacity, energy capacity and operational attributes. The proposed capacity market clearing model introduces the participation of VPPs with the consideration of wind power, photovoltaic power and conventional generation units. The presented capacity market clearing model considers system constraints such as peak demand, base demand, energy requirement, off-peak demand, and ramp power demand. Finally, the impact of UCPA of VPP, total capacity demand and renewable energy installed capacity on market cleared results is analyzed by conducting the study cases, it shows the validity of the proposed VPP UCPA formulas and the capacity market clearing model.