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Tsinghua Science and Technology 2024年第2期29卷 368-385页

作者： Canyun Dai Xiaoyan Sun Hejuan Hu Yong Zhang Dunwei Gong School of Information and Control Engineering China University of Mining and TechnologyXuzhou 221116China School of Information Science and Technology Qingdao University of Science and TechnologyQingdao 266061China

The dispatch of integrated energy systems in coal mines(IES-CM)with mine-associated supplies is vital for efficient energy utilization and carbon emissions ***,IES-CM dispatch is highly challenging due to its feature as multi-objective and strong *** constrained multi-objective evolutionary algorithms often fall into locally feasible domains with poorly distributed Pareto front,which greatly deteriorates dispatch *** tackle this problem,we transform the traditional dispatch model of IES-CM into two tasks:the main task with all constraints and the helper task with constraint *** we propose a constraint adaptive multi-tasking differential evolution algorithm(CA-MTDE)to optimize these two tasks *** helper task with constraint adaptive is developed to obtain infeasible solutions near the feasible *** purpose of this infeasible solution is to transfer guiding knowledge to help the main task move away from local ***,a dynamic dual-learning strategy using DE/current-to-rand/1 and DE/current-to-best/1 is developed to maintain task diversity and ***,we comprehensively evaluate the performance of CA-MTDE by applying it to a coal mine in Shanxi Province,considering two IES-CM *** demonstrate the feasibility of CA-MTDE and its ability to generate a Pareto front with exceptional convergence,diversity,and distribution.

关键词： dispatch integrated energy system coal mine evolutionary multi-tasking constraint differential evolution

Robust optimal dispatch strategy of integrated energy system considering CHP-P2G-CCS

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Global energy Interconnection 2024年第1期7卷 14-24页

作者： Bin Zhang Yihui Xia Xiaotao Peng School of Electrical Engineering Naval University of EngineeringWuhan 430000P.R.China School of Electrical Engineering Wuhan UniversityWuhan 430072P.R.China

integrated energy systems(IESs)can improve energy efficiency and reduce carbon emissions,essential for achieving peak carbon emissions and carbon *** study investigated the characteristics of the CHP model considering P2G and carbon capture systems,and a two-stage robust optimization model of the electricity-heat-gascold integrated energy system was ***,a CHP model considering the P2G and carbon capture system was established,and the electric-thermal coupling characteristics and P2G capacity constraints of the model were derived,which proved that the model could weaken the electric-thermal coupling characteristics,increase the electric power regulation range,and reduce carbon ***,a two-stage robust optimal scheduling model of an IES was constructed,in which the objective function in the day-ahead scheduling stage was to minimize the start-up and shutdown *** objective function in the real-time scheduling stage was to minimize the equipment operating costs,carbon emission costs,wind curtailment,and solar curtailment costs,considering multiple ***,after the objective function is linearized with a ψ-piecewise method,the model is solved based on the C&CG *** results show that the proposed model can effectively absorb renewable energy and reduce the total cost of the system.

关键词： Combined heat and power Power-to-gas Carbon capture system integrated energy system Robust optimization

Low-Carbon Dispatch of an integrated energy system Considering Confidence Intervals for Renewable energy Generation

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energy Engineering 2024年第2期121卷 461-482页

作者： Yan Shi Wenjie Li Gongbo Fan Luxi Zhang Fengjiu Yang Power Supply Service Supervision and Support Center East Inner Mongolia Electric Power Co.Ltd.Tongliao028000China School of Electrical and Electronic Engineering North China Electric Power UniversityBeijing102206China

Addressing the insufficiency in down-regulation leeway within integrated energy systems stemming from the erratic and volatile nature of wind and solar renewable energy generation,this study focuses on formulating a coordinated strategy involving the carbon capture unit of the integrated energy system and the resources on the load storage side.A scheduling model is devised that takes into account the confidence interval associated with renewable energy generation,with the overarching goal of optimizing the system for low-carbon *** begin with,an in-depth analysis is conducted on the temporal energy-shifting attributes and the low-carbon modulation mechanisms exhibited by the source-side carbon capture power plant within the context of integrated and adaptable operational *** from this analysis,a model is devised to represent the adjustable resources on the charge-storage side,predicated on the principles of electro-thermal coupling within the energy ***,the dissimilarities in the confidence intervals of renewable energy generation are considered,leading to the proposition of a flexible upper threshold for the confidence *** on this,a low-carbon dispatch model is established for the integrated energy system,factoring in the margin allowed by the adjustable *** the final phase,a simulation is performed on a regional electric heating integrated energy *** simulation seeks to assess the impact of source-load-storage coordination on the system’s low-carbon operation across various scenarios of reduction margin *** findings underscore that the proactive scheduling model incorporating confidence interval considerations for reduction margin reserves effectively mitigates the uncertainties tied to renewable energy *** harmonized orchestration of source,load,and storage elements,it expands the utilization scope for renewable energy,safeguards the economic efficiency of system operati

关键词： integrated energy system carbon capture power plant confidence interval optimized scheduling

Two-Stage Optimal Scheduling of Community integrated energy system

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energy Engineering 2024年第2期121卷 405-424页

作者： Ming Li Rifucairen Fu Tuerhong Yaxiaer Yunping Zheng Abiao Huang Ronghui Liu Shunfu Lin New Power system Technology Research Institute The Electric Power Research Institute of State Grid Xinjiang Electric Power Co.Ltd.Urumqi830000China The College of Electrical Engineering Shanghai University of Electric PowerShanghai200090China

From the perspective of a community energy operator,a two-stage optimal scheduling model of a community integrated energy system is proposed by integrating information on controllable *** day-ahead scheduling analyzes whether various controllable loads participate in the optimization and investigates the impact of their responses on the operating economy of the community integrated energy system(IES)before and after;the intra-day scheduling proposes a two-stage rolling optimization model based on the day-ahead scheduling scheme,taking into account the fluctuation of wind turbine output and load within a short period of time and according to the different response rates of heat and cooling power,and solves the adjusted output of each controllable *** simulation results show that the optimal scheduling of controllable loads effectively reduces the comprehensive operating costs of community IES;the two-stage optimal scheduling model can meet the energy demand of customers while effectively and timely suppressing the random fluctuations on both sides of the source and load during the intra-day stage,realizing the economic and smooth operation of IES.

关键词： integrated energy system two-stage optimal scheduling controllable loads rolling optimization

A Reliability Assessment of an integrated energy system Based on Coupling energy Flow and Thermal Inertia

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CSEE Journal of Power and energy systems 2022年第6期8卷 1772-1783页

作者： Wenxia Liu Tie Ma Yue Yang North China Electric Power University Beijing 102206China

With the wide application of integrated energy systems(IES),the degree of coupling between different types of energy sources is further strengthened,and the mechanism of fault development tends to be ***,in order to improve the accuracy and practicability of the reliability assessment of IESs,a sequential simulation reliability assessment method considering multi-energy flow and thermal inertia is proposed in this *** this method,the IES structure model is constructed with the combined cooling,heating and power(CCHP)unit as the core equipment,combining with the new energy source to realize the comprehensive energy power flow calculation considering any ***,a load reduction optimization model is established,considering the importance of load and operational economy,in the system status ***,the heat supply reliability index is corrected taking into account the transmission delay characteristics and terminal thermal inertia.A case study based on the 20-node and the analysis of the influence factors demonstrates the validity of the proposed method.

关键词： Combined cooling heating and power(CCHP) integrated energy system multi-energy flow calculation reliability assessment thermal inertia

Optimal operation of integrated energy system including power thermal and gas subsystems

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Frontiers in energy 2022年第1期16卷 105-120页

作者： Tongming LIU Wang ZHANG Yubin JIA Zhao Yang DONG Digital Grid Futures Institute The University of New South WalesSydney NSW-2052Australia School of Automation Southeast UniversityNanjing 210000China School of Electrical&Electronics Engineering Nanyang Technological UniversitySingapore 639798Singapore

As a form of hybrid multi-energy systems,the integrated energy system contains different forms of energy such as power,thermal,and gas which meet the load of various energy *** mainly on model building and optimal operation of the integrated energy system,in this paper,the dist-flow method is applied to quickly calculate the power flow and the gas system model is built by the analogy of the power system *** addition,the piecewise linearization method is applied to solve the quadratic Weymouth gas flow equation,and the alternating direction method of multipliers(ADMM)method is applied to narrow the optimal results of each subsystem at the coupling *** entire system reaches its optimal operation through multiple *** power-thermal-gas integrated energy system used in the case study includes an IEEE-33 bus power system,a Belgian 20 node natural gas system,and a six node thermal ***-based calculations and comparison of the results under different scenarios prove that the power-thermal-gas integrated energy system enhances the flexibility and stability of the system as well as reducing system operating costs to some extent.

关键词： integrated energy system power-to-gas dist-flow piecewise linearization alternating direction method of multipliers(ADMM)

Coordinated restoration optimization of power-gas integrated energy system with mobile emergency sources

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Global energy Interconnection 2023年第2期6卷 205-227页

作者： Lili Hao Wangyu Hu Chuan Wang Guangzong Wang Yue Sun Jun Chen Xueping Pan College of Electrical Engineering and Control Science Nanjing Tech UniversityNanjing 211816P.R.China Shennan Circuits Co. Ltd.Wuxi 214000P.R.China Tianjin Bohai Electric Power Group Co. Ltd.Tianjin 300171P.R.China College of energy and Electrical Engineering Hohai UniversityNanjing 210008P.R.China

In an integrated energy system(IES) composed of multiple subsystems, energy coupling causes an energy supply blockage or shutdown in one subsystem, thereby affecting the energy flow distribution optimization of other *** energy supply should be globally optimized during the IES energy supply restoration process to produce the highest restoration net income. Mobile emergency sources can be quickly and flexibly connected to supply energy after an energy outage to ensure a reliable supply to the system, which adds complexity to the decision. This study focuses on a powergas IES with mobile emergency sources and analyzes the coupling relationship between the gas distribution system and the power distribution system in terms of sources, networks, and loads, and the influence of mobile emergency source transportation. The influence of the transient process caused by the restoration operation of the gas distribution system on the power distribution system is also discussed. An optimization model for power-gas IES restoration was established with the objective of maximizing the net income. The coordinated restoration optimization decision-making process was also built to realize the decoupling iteration of the power-gas IES, including system status recognition, mobile emergency source dispatching optimization, gas-to-power gas flow optimization, and parallel intra-partition restoration scheme optimization for both the power and gas distribution systems. A simulation test power-gas IES consisting of an 81-node medium-voltage power distribution network, an 89-node medium-pressure gas distribution network, and four mobile emergency sources was constructed. The simulation analysis verified the efficiency of the proposed coordinated restoration optimization method.

关键词： Coordinated restoration optimization integrated energy system Power-gas decoupling Gas-to-power flow optimization Mobile emergency source

Optimal Expansion Planning Model for integrated energy system Considering integrated Demand Response and Bidirectional energy Exchange

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CSEE Journal of Power and energy systems 2023年第4期9卷 1449-1459页

作者： Wenkai Dong Zhigang Lu Liangce He Jiangfeng Zhang Tao Ma Xiaobo Cao College of Electrical Engineering Yanshan UniversityQinhuangdao 066004China Department of Automotive Engineering Clemson UniversityGreenvilleSC 29607US State Grid Xiong'an New Area Electric Power Supply Company Xiong'an New Area 071000China

The challenges of energy shortage and environmen-tal protection motivate people to take various measures to use energy wisely,and integrated energy systems are such a measure to tackle this *** this paper,an optimal expansion planning model for an integrated energy system consisting of power grid,gas network and multiple energy hubs is proposed,where the planning objective is to minimize operational fuel cost and capital investment cost covering carbon capture equipment and energy hubs among *** demonstrate the advantage of the proposed planning model,six case studies are investigated,and 13.47%annual cost savings can be achieved compared with the baseline planning scenario,which does not consider bidirectional energy exchange and integrated demand response *** Terms-Bidirectional energy exchange,energy hubs,integrated energy system,integrated demand response.

关键词： Bidirectional energy exchange energy hubs integrated energy system integrated demand response.

Optimal dispatching method for integrated energy system based on robust economic model predictive control considering source-load power interval prediction

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Global energy Interconnection 2022年第5期5卷 564-578页

作者： Yang Yu Jiali Li Dongyang Chen State Key Laboratory of Alternate Electrical Power system with Renewable energy Sources North China Electric Power University(Baoding)BaodingP.R.China Key Laboratory of Distributed energy Storage and Microgrid of Hebei Province North China Electric Power University(Baoding)BaodingP.R.China

Effective source-load prediction and reasonable dispatching are crucial to realize the economic and reliable operations of integrated energy systems(IESs).They can overcome the challenges introduced by the uncertainties of new energies and various types of loads in the ***,a robust optimal dispatching method for the IES based on a robust economic model predictive control(REMPC)strategy considering source-load power interval prediction is ***,an operation model of the IES is established,and an interval prediction model based on the bidirectional long short-term memory network optimized by beetle antenna search and bootstrap is formulated and applied to predict the photovoltaic power and the cooling,heating,and electrical ***,an optimal dispatching scheme based on REMPC is devised for the *** source-load interval prediction results are used to improve the robustness of the REPMC and reduce the influence of source-load uncertainties on *** actual IES case is selected to conduct simulations;the results show that compared with other prediction techniques,the proposed method has higher prediction interval coverage probability and prediction interval normalized averaged ***,the operational cost of the IES is decreased by the REMPC *** the devised dispatching scheme,the ability of the IES to handle the dispatching risk caused by prediction errors is *** dispatching robustness and operational economy are also achieved.

关键词： integrated energy system Source-load uncertainty Interval prediction Robust economic model predictive control Optimal dispatching.

Benefit allocation of electricity-gas-heat-hydrogen integrated energy system based on Shapley value

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Clean energy 2023年第6期7卷 1381-1390页

作者： Yujiao Liu Yan Li Yiping Rong Guoliang Li Ruiqi Wang Haini Zhou Zaozhuang Power Supply Company of State Grid Shandong Province Electric Power Company Zaozhuang CityShandong 277101China State Grid Shandong integrated energy Services Jinan CityShandong 250021China

The integrated energy system is an important development direction for achieving energy transformation in the context of the low-carbon development era,and an integrated energy system that uses renewable energy can reduce carbon emissions and improve energy utilization *** electric power network and the natural gas network are important transmission carriers in the en-ergy field,so the coupling relationship between them has been of wide *** paper establishes an integrated energy system considering electricity,gas,heat and hydrogen loads;takes each subject in the integrated energy system as the research object;anal-yses the economic returns of each subject under different operation modes;applies the Shapley value method for benefit allocation;and quantifies the contribution value of the subject to the alliance through different influencing factors to revise the benefit allocation *** with the independent mode,the overall benefits of the integrated energy system increase in the cooperative mode and the benefits of all subjects *** to the different characteristics of different subjects in terms of environmental benefits,collaborative innovation and risk sharing,the benefit allocation is reduced for new-energy subjects and increased for power-to-gas sub-jects and combined heat and power generation units after revising the benefit allocation,to improve the matching degree between the contribution level and the benefit allocation under the premise of increased profit for each *** cooperative mode effectively enhances the economic benefits of the system as a whole and individually,and provides a useful reference for the allocation of benefits of integrated energy *** analysis shows that the revised benefit distribution under the cooperative model increases by 3.86%,4.08%and 3.13%for power-to-gas subjects,combined heat and power generation units,and new-energy units,respectively,compared with the independent function m

关键词： integrated energy system power-to-gas Shapley value benefit allocation hydrogen energy