中国电机工程学报2024，Vol.44Issue(5)：1881-1893,中插18,14.DOI:10.13334/j.0258-8013.pcsee.222660
面向燃气机组调峰的天然气管网动态安全域
Natural Gas Network Dynamic Security Region for Gas-fired Units Peak Regulation
摘要
Abstract
The flexible peak regulation of gas-fired units increases the consumption of renewable energy but the resultant sharp gas-pressure fluctuations introduce new security risks to the natural gas network.This paper proposes a natural gas network dynamic security region to represent a set of peak regulation amounts of gas-fired units that satisfy dynamic pipe flow security constraints.First,impractical reasons for the dynamic security region with time-continuous gas loads'mass flow rates(MFRs)as the injection space are analyzed.To this end,the inlet MFR of each gas-fired unit is converted into a function of the active-power adjustment.And the dynamic security region is constructed by taking the discrete active-power adjustment as the injection space referring to the initial operating point.For balancing computational accuracy and efficiency,the continuous variables in the security region boundary search optimization model are discretized by the space-time orthogonal collocation.The gas network steady-state security region is revealed to be a reduced form of the dynamic security region,for it can be obtained by slacking some constraints in the optimization model.Simulation results show that the proposed method can overcome the over optimism of the gas network steady-state security region for intraday security analysis,thus enhancing coordinated situation awareness of electricity-gas coupling systems.关键词
新型电力系统/天然气管网/智能发电/燃气机组调峰/安全域/动态管流Key words
new-type power grid/natural gas network/smart generation/gas-fired units peak regulation(GPR)/security region/dynamic pipe flow分类
信息技术与安全科学引用本文复制引用
杜蕙,林涛,张效宁,李君,李轻言,付希越..面向燃气机组调峰的天然气管网动态安全域[J].中国电机工程学报,2024,44(5):1881-1893,中插18,14.基金项目
国家自然科学基金联合基金重点支持项目(U2166206). Project Supported by Joint Funds of National Natural Science Foundation of China(Key Program)(U2166206). （U2166206）
