摘要
随着大规模新能源接入电网,新型电力系统“低惯量、弱支撑”特征凸显,电网频率调节资源日益稀缺,系统频率稳定问题愈发严峻。先进绝热压缩空气储能(advanced adiabatic compressed air energy storage,AA-CAES)具有容量大、寿命长等优势而受到广泛关注,但由于其储能和释能过程涉及气-热动态耦合过程,调频特性较为复杂,调频潜力还有待挖掘。因此,首先建立AA-CAES系统全工况动态仿真模型,进而基于期望频率动态曲线设计AA-CAES系统调频传递函数,优化目标传递函数关键参数,实现AA-CAES最小动态功率补偿下满足系统频率调节需求。最后通过仿真实验,验证了所提控制策略可优化AA-CAES调频容量的同时减小系统的稳态频率偏差与频率超调量,显著改善频率响应特性,为建设电网友好型AA-CAES电站提供技术支撑。
With the large-scale integration of new energy into the power grid,the characteristics of“low inertia and weak support”in the new power system are becoming prominent,and the frequency regulation resources of the power grid are becoming increasingly scarce.The problem of system frequency stability is becoming increasingly severe.Advanced Adiabatic compressed air energy storage(AA-CAES)has attracted widespread attention due to its advantages such as large capacity and long lifespan.However,due to the complex frequency modulation characteristics of AA-CAES involved in the gas-thermal dynamic coupling process in energy storage and release,the potential for frequency modulation still needs to be explored.We first establish a dynamic simulation model of the AA-CAES system under all operating conditions,and then design the frequency modulation transfer function of the AA-CAES system based on the expected frequency dynamic curve,optimize the key parameters of the target transfer function,and achieve the frequency regulation requirements of the system under the minimum dynamic power compensation of the AA-CAES.Finally,through simulation experiments,it is verified that the control strategy can optimize the frequency regulation capacity of AA-CAES while reducing the steady-state frequency deviation and frequency overshoot of the system,significantly improving the frequency response characteristics,and providing technical supports for building a grid friendly AA-CAES power plant.
作者
崔森
陈来军
陈思源
孙正堂
梅生伟
CUI Sen;CHEN Laijun;CHEN Siyuan;SUN Zhengtang;MEI Shengwei(Department of Electrical Engineering and Applied Electronics Technology,Tsinghua University,Beijing 100084,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2024年第6期2433-2441,I0001,共10页
High Voltage Engineering
基金
中国博士后科学基金(2023M731877)
清华大学-丰田联合研究基金(20233930061)。
关键词
先进绝热压缩空气储能
全工况动态建模
功率补偿
期望曲线
频率调节
调频容量
advanced adiabatic compressed air energy storage
full working condition dynamic modeling
power compensation
expectation curve
frequency regulation
frequency modulation capacity
