摘要
针对可再生能源的消纳问题,研究可控负荷机制与电-热耦合网中的储能调控策略,构建综合灵活性资源模型优化系统的低碳运行。首先分析区域电网中差异化布局的工业负荷调控机制,基于城市能源网架电热耦合建立可控负荷及电-热储能调控模型;然后以经济成本、风光消纳及碳排放为指标构建综合效益模型,提出碳排放流动拓扑,描述依附于能量流的碳排放流信息;最后对IEEE 33节点电网和45节点热网耦合能源系统进行仿真,分析多元灵活性资源响应对系统综合效益的改善效果,并通过拓扑直观显示典型场景中电-热碳排放流动过程。结果表明发掘灵活性资源能够提升电热综合能源系统对风光能源的消纳裕度,验证了所提方法的合理性和有效性。
The modern energy system is in the low-carbon transition stage.However,due to the randomness and volatility of renewable energy,it is difficult to integrate into the grid and the low-carbon process is limited.Integrated Energy Systems(IES)focus on meeting the demand for interaction between supply and demand.In recent years,increasingly resources on the load and energy storage side have begun to participate in the low-carbon operation of the system,but the resource synergy advantage has not been fully utilized,and there is a lack of analysis on the flow and transfer of carbon emissions in IES.To solve these problems,this paper proposes a low carbon optimization model of electric and heating integrated energy system considering the participation of flexible resources,analyzes the improvement effect of multiple flexible resources response on the comprehensive benefits of the system,and visually presents the flow process of electric thermal carbon emissions topologically,promoting the efficient consumption of low carbon energy in IES.First,analyze the industrial load regulation mechanism of differentiated layout in the regional power grid,and establish the model of cogeneration unit,electric heating equipment,electric/thermal energy storage and controllable load in the electric-thermal coupling system based on the urban energy grid.Then,a comprehensive benefit model is built with economic cost,wind and solar usage and carbon emissions as indicators,and a carbon emission flow topology is proposed to describe the carbon emission flow information attached to the energy flow.Finally,the electric-thermal coupling energy system is simulated to obtain the regulatory results of flexible resources and carbon emission flow information in different resource allocation scenarios.In this model,the improvement effect of flexible resource participation response on the comprehensive benefits of the system is analyzed from the perspective of economy and low carbon,and a more comprehensive evaluation model is formed by visualizing the flow process of electric and thermal carbon emissions through topology.In the IEEE 33 node distribution network and 45 node heat network coupling system,different scenarios are divided according to the flexible resource composition for simulation.The results show that under the collaborative regulation of resources on the load storage side,compared with the scenario without flexible resources,the economic cost is increased by about 8.1%,the wind and solar usage rate is increased by 7.9%,and the carbon emissions are reduced by 10.8%.Through the reasonable conversion of energy storage operation mode,the power supply burden of traditional high carbon emission power supply units is reduced.The participation of industrial controllable loads has effectively expanded the flexible resources,reducing the peak valley difference by 17%,further promoting the consumption of solar energy and reducing carbon emissions.The topology analysis of carbon flow in typical periods of the operation cycle shows that the carbon emission topology of wind and solar energy in IES can be extended to more load nodes in the system through the storage and redistribution of low carbon and excess energy,and the reasonable electricity production transfer of industrial users,thus reducing the node carbon emission intensity and the total carbon emissions in the operation cycle.The following conclusions can be drawn from the simulation analysis:(1)The flexible resource model can describe the adjustment characteristics of energy storage and the industry specific industrial load regulation characteristics,and can make policy based on the resource type.(2)By optimizing the flexible resource operation scheme,the benefits of IES in terms of economy,wind and solar usage rate and carbon emissions can be improved,and diversified optimization schemes can be provided within feasible areas.The carbon emission flow model adopted can accurately describe the carbon emission flow process of IES in the operation cycle.(3)Through flexible resource control,it can promote the penetration of low-carbon energy in IES,reduce the use of energyintensive energy,and help achieve the economic operation of the system in a low-carbon environment.
作者
潘超
范宫博
王锦鹏
徐晓东
孟涛
Pan Chao;Fan Gongbo;Wang Jinpeng;Xu Xiaodong;Meng Tao(Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology of Ministry of Education Northeast Electric Power University,Jilin 132012,China;Electric Power Research Institute State Grid Jilin Electric Power Co.Ltd,Changchun 130021,China)
出处
《电工技术学报》
EI
CSCD
北大核心
2023年第6期1633-1647,共15页
Transactions of China Electrotechnical Society
基金
国家重点研发计划重点专项(2016YFB0900100)
常规水电站结合抽蓄、光伏、风电、电化学储能联合开发研究(525687200009)资助。
关键词
综合能源系统
可控负荷
电/热储能
优化运行
碳排放流动拓扑
Integrated energy system
controllable load
electric/thermal energy storage
optimized operation
carbon emission flow topology
