摘要
近年来,在“双碳”目标背景下,近乎零边际发电成本的分布式清洁能源装机得到迅速发展。然而,如何研究含分布式清洁能源“产消者”之间能源交易机制及这种交易行为对规划的影响面临重要挑战。针对含光伏和储能的光储聚合商之间交易行为影响,提出了一种基于虚拟电能交易驱动的光储容量优化配置方法。首先,以光储聚合商效益函数为基础,构建了光储聚合商之间的电力交易机制,以产生电能定价并模拟一定容量配置下系统优化运行状态;其次,考虑多个聚合商分散交易行为对容量配置的影响,建立融合虚拟电能交易的光储聚合商容量优化配置模型,该模型将交易行为的影响以交易成本的形式融入系统运行层,以光储容量综合规划成本最小为目标函数,通过交易规划约束保证系统的安全性;最后,在MATLAB软件中进行了仿真验证。交易机制参数仿真、交易过程仿真和最后的光储聚合商容量配置仿真结果发现:本文提出的光储聚合商效益函数能够指导光储聚合商之间的交易定价行为,模拟分散交易,电能的价格和负荷水平受到储能与光伏容量配置的影响;并优化得到聚合商经济性最优的容量配置方案,与其他随机方案相比较既满足负荷正常消耗又避免了储能规划投资上的浪费。本文为含可交易能源的光储聚合商交易层面提供了定价策略,为考虑分布式清洁能源交易影响的光储容量优化配置方法提供了有效一定参考。
In recent years, under the background of “double carbon”, the distributed new energy generation with nearly zero marginal generation cost has developed rapidly. However, how to study the energy trading mechanism among the “prosumers” of distributed new energy generations and its impact on the power system planning face important challenges. Focusing on the impact of such transaction behavior on the planning level for photovoltaic-storage aggregated energy systems, an optimal configuration method for the capacity of photovoltaic and energy storage systems based on the virtual electricity transaction mechanism was proposed. Firstly, aiming to generate electrical pricing and simulate the optimal operation state under a certain capacity configuration, a negotiation and matching mechanism for the electricity transaction between aggregators were established based on the benefit function of photovoltaic-storage aggregated energy system. Secondly, considering the impact of decentralized transaction behavior of aggregators on the capacity configuration, an optimal capacity configuration model of photovoltaic-storage aggregated energy systems considering the virtual energy transaction was proposed. The transaction cost was added in the operation level to integrate the impact of transaction behavior into the model. The minimum cost of the capacity configuration was taken as the objective function. The transaction and configuration constraints were accounted for the security of the systems. Finally, the simulation was carried out in the MATLAB. Simulation results of the transaction algorithm parameter, the transaction process and the final capacity configuration show that, the transaction and pricing behavior between aggregators can be guided and the decentralized transaction of aggregators can be simulated by the benefit function proposed in this paper. The electricity price and load level are affected by the capacity configuration of photovoltaic and energy storage systems. Compared with other random schemes, the optimal capacity configuration scheme proposed in this paper meets the normal consumption of load and avoids the waste investment of the energy storage planning. This paper also provides the electricity pricing strategies for aggregators with the tradable clean energy at the transaction level, and provides an effective reference for the optimal capacity configuration method of the photovoltaic-storage aggregated energy system considering the impact of the distributed new energy transaction behavior.
作者
代佳琨
向月
李然
刘俊勇
DAI Jiakun;XIANG Yue;LI Ran;LIU Junyong(College of Electrical Eng.,Sichuan Univ.,Chengdu 610065,China;Dept.of Electrical Eng.,Shanghai Jiaotong Univ.,Shanghai 200240,China)
出处
《工程科学与技术》
EI
CSCD
北大核心
2023年第2期152-159,共8页
Advanced Engineering Sciences
基金
国家自然科学基金项目(52177103)。
关键词
运行模拟
优化配置
光储聚合商
虚拟电能交易
operation and simulation
optimal configuration
photovoltaic-storage aggregated power systems
virtual energy transaction
