Xu Wen, Quan Zhou, Baosong Luo, Yang Yang, Rui Mao, Dong Fan
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引用次数: 0
Abstract
Insufficient flexibility is a major barrier to the development of new power systems. Leveraging the resource allocation function of the electricity market is a promising way to enhance the flexibility of power systems and promote the consumption of renewables. The reasonable allocation of ancillary service costs plays a pivotal role in this function. Towards the target of “who causes, who shares,” various research related to cost allocation has been conducted. However, there is a lack of quantitative analysis of the impact of different cost allocation mechanisms on the market participants’ revenues. Whether various cost allocation mechanisms can alleviate the insufficient flexibility problem of power systems needs to be validated. With this in mind, taking operating reserve ancillary services as an example, a long-term market operation simulation model with energy-reserve joint clearing is established in this paper based on the time series production simulation. According to this, the revenues of market participants under different reserve cost allocation mechanisms are quantified. Besides, a self-dispatch model for the energy storage (ES) equipped by renewables is established, based on which the impact of ES on the revenues of renewables under different cost allocation mechanisms is analyzed. Case studies based on practical data from a provincial power grid in China demonstrate that with the well-designed reserve cost allocation mechanism, the revenues of flexible resources can be ensured. Meanwhile, renewables are incentivized to reduce their fluctuations and uncertainties by equipping the ES. Hence, the insufficient flexibility problem of power systems can be alleviated from both supply and requirements perspectives.
灵活性不足是新型电力系统发展的主要障碍。发挥电力市场的资源配置功能,是提高电力系统灵活性、促进可再生能源消纳的有效途径。在这一功能中,辅助服务成本的合理分配起着举足轻重的作用。为了实现 "谁造成、谁分担 "的目标,人们开展了与成本分配相关的各种研究。然而,不同成本分配机制对市场参与者收益的影响缺乏定量分析。各种成本分配机制能否缓解电力系统灵活性不足的问题还需要验证。鉴于此,本文以运行储备辅助服务为例,基于时间序列生产仿真,建立了能量储备联合清算的长期市场运行仿真模型。据此,量化了不同储备成本分配机制下市场参与者的收益。此外,本文还建立了可再生能源配备的储能装置(ES)的自我调度模型,并在此基础上分析了不同成本分配机制下储能装置对可再生能源收益的影响。基于中国某省级电网实际数据的案例研究表明,通过精心设计的储备成本分配机制,可确保灵活资源的收益。同时,可再生能源可以通过配备 ES 来减少其波动和不确定性。因此,电力系统灵活性不足的问题可以从供应和需求两个角度得到缓解。
期刊介绍:
Frontiers in Energy Research makes use of the unique Frontiers platform for open-access publishing and research networking for scientists, which provides an equal opportunity to seek, share and create knowledge. The mission of Frontiers is to place publishing back in the hands of working scientists and to promote an interactive, fair, and efficient review process. Articles are peer-reviewed according to the Frontiers review guidelines, which evaluate manuscripts on objective editorial criteria