频率响应需求下的储能容量配置方法研究
Study on Configuration Method of Energy Storage System under Frequency Response Requirements
杨盛1
作者信息
- 1. 安徽理工大学电气与信息工程学院,安徽 淮南 232001
- 折叠
摘要
随着我国"双碳"目标的提出,电力系统的新能源渗透率逐步提高,由于风光等新能源具有随机性和波动性,因此在改善能源结构的同时,对电网也提出了新的挑战.为满足电网调频需求,提出了一种考虑惯量需求的储能容量配置方法.首先,分析同步机的控制结构,计算储能参与调频的不平衡功率分摊.其次,考虑频率变化率和频率偏差的限制条件,根据同步机的惯性常数和额定容量,建立电力系统所能承受的最大功率增量、等效惯性常数以及调差系数等参数之间的数学模型.最后,计算储能系统需要配置的容量和惯量.通过对不同的储能容量进行仿真,验证了该方法能够有效改善系统的频率偏差量,提升电网调频性能,为储能容量配置提供理论依据.
Abstract
With the proposal of China's"dual carbon"goal,the penetration rate of new energy generations in power system is gradually increasing.Due to the randomness and volatility of new energy sources such as wind and solar,while improving the energy structure,new challenges are also posed to power grid.To meet frequency regulation needs of power grid,a method of energy storage capacity configuration considering inertia demand was proposed.First by analyzing control structure of the synchronous machine,unbalanced power allocation of energy storage participating in frequency modulation was calculated.Second considering the limiting conditions of frequency change rate and frequency deviation,a mathematical model was established between the maximum power increment,equivalent inertia constant,and adjustment coefficient that the power system can withstand based on the inertia constant and rated capacity of the synchronous machine.Finally the required capacity and inertia of the energy storage system were calculated.By simulating different energy storage capacities,it was verified that this method can effectively improve frequency deviation of the system,enhance frequency regulation performance of the grid,and provide a theoretical basis for energy storage capacity configuration.
关键词
最大功率增量/等效惯性常数/调差系数/储能容量配置Key words
maximum power increment/equivalent inertia constant/adjustment coefficient/energy storage capacity configuration引用本文复制引用
出版年
2024
NETL
NSTL
万方数据