摘要
高比例间歇式清洁能源的接入实现了能源利用率的提高和碳排放的减少,但其出力的不确定性为交直流混合配电网的安全运行带来了挑战。同时,高效调度泛在灵活性资源可以促进风光资源的消纳,实现交直流混合配电网的安全经济运行。鉴于此,对高比例新能源交直流混合配电网优化运行与安全分析研究进行了综述。首先介绍了交直流混合配电网潮流模型及运行约束,包括非线性模型、线性化模型和凸松弛模型;其次阐述了交直流混合配电网优化调度研究,包括随机优化方法、两阶段/多阶段随机优化模型和灵活性运行;接着对交直流混合配电网进行了N-1安全分析和可靠性评估,构建了安全域模型;最后展望了未来交直流混合配电网安全分析与优化调度可研究的方向。
The access of high proportion of clean energy improves energy efficiency and reduces carbon emissions,but the output uncertainty brings challenges to the safe operation of AC/DC hybrid distribution network.Meanwhile,the efficient scheduling of flexible resources can promote the consumption of wind power and photovoltaic resources,and realize the safe and economic operation of AC/DC hybrid distribution network.In view of this,the research on the optimal operation and safety analysis of AC/DC hybrid distribution network with high proportion of renewable energy is reviewed.Firstly,the power flow models and operation constraints of AC/DC hybrid distribution network are introduced,including nonlinear model,linearized model and convex relaxation model.Secondly,the research on the optimal dispatching of AC/DC hybrid distribution network is described,including stochastic optimization method,two-and multi-stage stochastic optimization model and flexible operation.Then,the N-1 safety analysis and reliability evaluation are carried out for AC/DC hybrid distribution network,and the safety region model is constructed.Finally,the research directions of safety analysis and optimal dispatching of AC/DC hybrid distribution network in the future are prospected.
作者
卫志农
裴蕾
陈胜
赵景涛
傅强
WEI Zhinong;PEI Lei;CHEN Sheng;ZHAO Jingtao;FU Qiang(College of Energy and Electrical Engineering,Hohai University,Nanjing 210098,China;NARI Technology Company Limited,Nanjing 211100,China)
出处
《电力自动化设备》
EI
CSCD
北大核心
2021年第9期85-94,共10页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(U1966205)。
关键词
碳中和
交直流混合配电网
新能源
安全分析
优化调度
carbon neutral
AC/DC hybrid distribution network
renewable energy
safety analysis
optimal dispatching
