摘要
对于含多类型混合储能系统的运行优化,通常将所有设备等效为一个整体,并未考虑各储能系统的运行特性差异等因素,最终导致设备利用率低,经济运行能力差。为此,首先以最大可再生能源消纳以及最小电网交换电量为目标,构建了优化函数模型。其次,考虑到多类型储能系统在充放电动态特性、运行成本特征以及SOC设定等方面差异,提出了一种结合能量型储能SOC一致性约束的双层解耦式运行优化方法,以适应分布式能源系统中的多类型储能协同运行。最后,以某个在建的分布式可再生能源系统工业示范园区数据为基础,对所提方法进行了算例验证与分析。结果证明,所提方法在保证分布式能源系统内多个能量型储能系统充放电同步性的同时,能够对具有相同运行特性的储能系统进行聚类,有效了降低计算复杂性,完成多类型储能协调与优化,并最终促进分布式能源系统的新能源消纳。
For the operation optimization of hybrid multi-type energy storage,all equipment is usually treated as an equivalent whole,without considering factors such as differences in the operating characteristics of each energy storage system,ultimately resulting in low equipment utilization and poor economic operation capability.Firstly,an optimization model is established with the objectives of maximizing renewable energy consumption and minimizing grid exchange capacity.Secondly,considering the dynamic characteristics of charging and discharging,operating cost features,and operating states of charge(SOC)settings of multi-type energy storage systems,a two-layer decoupled operational optimization scheme is proposed to adapt to the coordinated operation of multi-type energy storage in distributed energy systems(DESs),combined with SOC consistency constraints of energy-based energy storage system.Finally,based on data from a distributed renewable energy system industrial demonstration park under construction,the proposed scheme is validated and analyzed through numerical examples.The results show that this scheme can ensure the synchronization of charging and discharging of multi-type energy storage systems within a DES,while also achieving clustering of energy storage systems with the same operating characteristics.This method effectively reduces computational complexity,enables the coordination and optimization of multi-type energy storage,and thereby promotes new energy consumption in distributed energy systems.
作者
郭佩乾
郝峰杰
袁志昌
尹立坤
姜智霖
潘海宁
项淼毅
GUO Peiqian;HAO Fengjie;YUAN Zhichang;YIN Likun;JIANG Zhilin;PAN Haining;XIANG Miaoyi(Department of Electrical Engineering,Tsinghua University,Beijing 100084,China;China Three Gorges Corporation,Wuhan 430010,China)
出处
《南方电网技术》
CSCD
北大核心
2024年第8期29-38,60,共11页
Southern Power System Technology
基金
中国长江三峡集团有限公司科研项目(202103417)。
关键词
分布式能源系统
功率型储能
能量型储能
双层解耦式运行优化
聚类降维
SOC一致性约束
distributed energy system
power-based energy storage
energy-based energy storage system
two-layer decoupled operational optimization
dimensionality reduction and clustering
SOC consistency constraint
