考虑气热惯性的综合能源系统参与辅助服务策略  

Ancillary Service Strategies for Integrated Energy Systems Considering Gas-Thermal Inertia

作　　者：缪蔡然 朱姚培 王琦[1] 汤奕[1] MIAO Cairan;ZHU Yaopei;WANG Qi;TANG Yi(School of Electrical Engineering,Southeast University,Nanjing 210096,China)

机构地区：[1]东南大学电气工程学院,南京市210096

出　　处：《电力建设》2023年第11期128-137,共10页Electric Power Construction

基　　金：国家重点研发计划项目(2019YFE0118000)。

摘　　要：可再生能源在电力系统中的大量接入导致电网可靠性水平逐渐降低,辅助服务对电网安全运行的保障作用日益增加。电、气、热耦合的综合能源系统具有能源形式灵活转换的特点,可以成为电力系统优良的辅助服务资源。文章充分探索综合能源系统气热惯性参与电力系统不同时间尺度辅助服务的可能性:首先分析气热惯性对功率波动的抵御能力与延时响应特性;然后以惯量和频率辅助服务为例,提出综合能源系统参与辅助服务的响应策略与方案;接着,针对所提响应策略分别建立气热惯性模型与综合能源系统参与的惯量和频率辅助服务优化模型;最后,通过算例仿真与分析可得,考虑气热惯性的综合能源系统具有参与电力系统不同时间尺度辅助服务的能力,在提高系统运行经济性的同时,具有更好的辅助服务效果。The widespread integration of renewable energy into power systems has led to a gradual decline in power grid reliability,underscoring the increasing importance of ancillary services in ensuring the safe operation of power grids.Based on the characteristics of flexible energy conversion,electricity,gas,and heat coupled integrated energy systems have emerged as promising auxiliary service resources for power systems.Therefore,this study fully explores the potential of integrated energy systems,particularly in leveraging gas-thermal inertia,to contribute to ancillary services across various time scales.First,the resistance capability and time-delay response characteristics of the gas-thermal inertia to power fluctuations were analyzed.Using inertia and frequency regulation ancillary services as examples,a response strategy and scheme are proposed for the participation of integrated energy systems in auxiliary services.Subsequently,a gas-thermal inertia model and an inertia and frequency auxiliary service optimization model involving the integrated energy system are established according to the proposed response strategies.Simulation and analysis of a small-capacity system confirmed that the integrated energy systems considering gas-thermal inertia were capable of participating in ancillary services,resulting in improved system operational economy and ancillary service effectiveness.

关 键 词：综合能源系统 气热惯性 惯量辅助服务 频率辅助服务 

分 类 号：TM73[电气工程—电力系统及自动化]