摘要
分布式可再生能源高比例接入是未来电力和能源系统的趋势。售电市场改革背景下,零售侧价格机制对推进用户侧可再生能源规模化接入与消纳具有重要意义。考虑到可再生能源开发利用本质上是一个技术创新扩散过程,该文提出一种用于衡量用户侧价格机制影响下的分布式光伏扩散能力的评估方法。首先,基于居民侧双阶梯式零售电价费率模型,应用拉姆齐定价原理构建含用户与售电商的二元主体购售电决策模型。其次,引入系统动力学建模思想,分析电价设计与分布式光伏接入容量的市场反馈机制,建立电价引导下的分布式光伏动态扩散的系统演化模型。最后,提出基于李雅普诺夫函数的分布式光伏稳定扩散的判别条件,并获得分布式光伏在用户群体中可接入的极限容量。算例分析从中长期时间视角,评估价格因素对系统中分布式光伏扩散能力的稳定性和灵敏度的影响。
High penetration of distributed renewable energy is the trend of future power and energy systems. Under the background of retail electricity market reform, retail price mechanism is of great significance to facilitate large-scale integration and consumption of user-side renewable energies. Considering the adoption of renewable energy is essentially the diffusion process of technological innovation, we presented an evaluation method for measuring the diffusion capability of distributed photovoltaic with the retail price mechanism. Firstly, based on the residential double-step tariff structure, the decision models were proposed for energy transactions between retailers and customers using Ramsey pricing theory. Secondly, by introducing the methodology of system dynamics, the market feedback mechanism between the electricity price design and the integration capacity of distributed photovoltaic was analyzed, thus the evolutionary model of distributed photovoltaic dynamic diffusion under the price policy was established. Finally, the criterion of stable diffusion of distributed photovoltaic based on Lyapunov function was developed in this paper, and the limiting installation capacity of distributed photovoltaic in the whole power system was achieved. From the medium-to-long term perspective, case studies show the assessment of the impact of the retail electricity price on the stability and sensitivity of the distributed photovoltaic diffusion capability.
作者
韩冬
李孟曈
严正
HAN Dong;LI Mengtong;YAN Zheng(Department of Electrical Engineering,University of Shanghai for Science and Technology,Yangpu District,Shanghai 200093,China;Department of Electrical Engineering,Shanghai Jiaotong University,Minhang District,Shanghai 200240,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2021年第3期985-993,共9页
Proceedings of the CSEE
基金
国家自然科学基金项目(51777126)。
关键词
分布式光伏
拉姆齐定价
技术扩散
反馈机制
稳定性
distributed photovoltaic
Ramsey pricing
technology diffusion
feedback mechanism
stability
