The multi-energy complementary distributed energy system (MCDES) covers a variety of energy forms, involves complex operation modes, and contains a wealth of control equipment and coupling links. It can realize the co...The multi-energy complementary distributed energy system (MCDES) covers a variety of energy forms, involves complex operation modes, and contains a wealth of control equipment and coupling links. It can realize the complementary and efficient use of different types of energy, which is the basic component of the physical layer of the Energy Internet. In this paper, aiming at the demand of the energy application for towns, a distributed energy system based on multi-energy complementary is constructed. Firstly, the supply condition of the distributed energy for the demonstration project is analyzed, and the architecture of the multi-energy complementary distributed energy system is established. Then the regulation strategy of the multi-energy complementary distributed energy system is proposed. Finally, an overall system scheme for the multi-energy complementary distributed energy system suitable for towns is developed, which provides a solid foundation for the development and promotion of the multi-energy complementary distributed energy system.展开更多
The multi-energy complementary ecosystem is an important form of the modern energy system.However,standardized evaluation criteria and the corresponding method framework have not yet been formed,resulting in unclear s...The multi-energy complementary ecosystem is an important form of the modern energy system.However,standardized evaluation criteria and the corresponding method framework have not yet been formed,resulting in unclear standards and irregular processes of its construction.To cope with this issue,a novel comprehensive evaluation framework for multi-energy complementary ecosystems is proposed in this study.First,a 5D comprehensive evaluation criteria system,including environment,economy,technology,safety and systematicness,is constructed.Then,a novel multicriteria decision-making model integrating an analytic network process,entropy and preference-ranking organization method for enrichment evaluation under an intuitional fuzzy environment is proposed.Finally,four practical cases are used for model testing and empirical analysis.The results of the research show that the unit cost of the energy supply and the internal rate of return indexes have the highest weights of 0.142 and 0.010,respectively.It means that they are the focus in the construction of a multi-energy complementary ecosystem.The net flows of four cases are 0.015,0.123,-0.132 and-0.005,indicating that cases with a variety of energy supply forms and using intelligent management and control platforms to achieve cold,heat and electrical coupling have more advantages.展开更多
能源互联网借助互联网信息平台达到能量按需双向流动,但构建园区能源互联网(park energy internet, PEI)是提升能源互联网终端能源利用效率、实现多能互补的重要和关键举措,为此提出含PEI接入及其需求响应的配电网优化规划模型。首先阐...能源互联网借助互联网信息平台达到能量按需双向流动,但构建园区能源互联网(park energy internet, PEI)是提升能源互联网终端能源利用效率、实现多能互补的重要和关键举措,为此提出含PEI接入及其需求响应的配电网优化规划模型。首先阐述PEI的基本结构,分析PEI对上级配电网的需求响应特性;继而提出含PEI接入并考虑其需求响应的配电网规划思路,其中以等值年投资成本和运行成本为最小目标,以配电网变压器、主线路选型以及需求侧响应容量为决策量,建立了含PEI接入的配电网规划模型;最后以含PEI的10 kV配电网为例进行仿真验证,仿真结果验证了模型的有效性与实用性。展开更多
The depletion of fossil energy and the deterioration of the ecological environment have severely restricted the development of the power industry.Therefore,it is extremely urgent to transform energy production methods...The depletion of fossil energy and the deterioration of the ecological environment have severely restricted the development of the power industry.Therefore,it is extremely urgent to transform energy production methods and vigorously develop renewable energy sources.It is therefore important to ensure the stability and operation of a large multi-energy complementary system,and provide theoretical support for the world’s largest single complementary demonstration project with hydro-wind-PV power-battery storage in Qinghai Province.Considering all the multiple power supply constraints,an optimization scheduling model is established with the objective of minimizing the volatility of output power.As particle swarm optimization(PSO)has a problem of premature convergence and slow convergence in the latter half,combined with niche technology in evolution,a niche particle swarm optimization(NPSO)is proposed to determine the optimal solution of the model.Finally,the multiple stations’coordinated operation is analyzed taking the example of 10 million kilowatt complementary power stations with hydropower,wind power,PV power,and battery storage in the Yellow River Company Hainan prefecture.The case verifies the rationality and feasibility of the model.It shows that complementary operations can improve the utilization rate of renewable energy and reduce the impact of wind and PV power’s volatility on the power grid.展开更多
With the gradual upgradation of global energy consumption and the associated development of multi-energy sources,the pace of unified energy planning and design has been accelerated and the concept of multi-energy syst...With the gradual upgradation of global energy consumption and the associated development of multi-energy sources,the pace of unified energy planning and design has been accelerated and the concept of multi-energy system(MES)has been formed.The industrial structure of industrial park(IP)consists of production and marketing of multi-energy sources,which makes IP become an ideal application scenario for MES.The coupling between multi-sources raises the complexity level of IP,which requires the demand side analysis in IP as it enables customers to actively participate in energy planning and development.This paper presents the concept and operation strategies of integrated demand response(IDR),and its model classification is analyzed in detail.Optimization model and IDR with varying time period are studied in IP to determine their impacts on the system.A detailed survey of different techniques in both operation strategies and model classification is presented and the classification is based on pros and cons.Finally,key issues and outlooks are discussed.展开更多
文摘The multi-energy complementary distributed energy system (MCDES) covers a variety of energy forms, involves complex operation modes, and contains a wealth of control equipment and coupling links. It can realize the complementary and efficient use of different types of energy, which is the basic component of the physical layer of the Energy Internet. In this paper, aiming at the demand of the energy application for towns, a distributed energy system based on multi-energy complementary is constructed. Firstly, the supply condition of the distributed energy for the demonstration project is analyzed, and the architecture of the multi-energy complementary distributed energy system is established. Then the regulation strategy of the multi-energy complementary distributed energy system is proposed. Finally, an overall system scheme for the multi-energy complementary distributed energy system suitable for towns is developed, which provides a solid foundation for the development and promotion of the multi-energy complementary distributed energy system.
基金supported by the second batch of the soft subject research project of China Southern Power Grid Corporation in 2022,‘Exploring the construction path of multi energy complementary ecosystem of industrial parks in Qianhai’(XNXM_20221209003).
文摘The multi-energy complementary ecosystem is an important form of the modern energy system.However,standardized evaluation criteria and the corresponding method framework have not yet been formed,resulting in unclear standards and irregular processes of its construction.To cope with this issue,a novel comprehensive evaluation framework for multi-energy complementary ecosystems is proposed in this study.First,a 5D comprehensive evaluation criteria system,including environment,economy,technology,safety and systematicness,is constructed.Then,a novel multicriteria decision-making model integrating an analytic network process,entropy and preference-ranking organization method for enrichment evaluation under an intuitional fuzzy environment is proposed.Finally,four practical cases are used for model testing and empirical analysis.The results of the research show that the unit cost of the energy supply and the internal rate of return indexes have the highest weights of 0.142 and 0.010,respectively.It means that they are the focus in the construction of a multi-energy complementary ecosystem.The net flows of four cases are 0.015,0.123,-0.132 and-0.005,indicating that cases with a variety of energy supply forms and using intelligent management and control platforms to achieve cold,heat and electrical coupling have more advantages.
文摘能源互联网借助互联网信息平台达到能量按需双向流动,但构建园区能源互联网(park energy internet, PEI)是提升能源互联网终端能源利用效率、实现多能互补的重要和关键举措,为此提出含PEI接入及其需求响应的配电网优化规划模型。首先阐述PEI的基本结构,分析PEI对上级配电网的需求响应特性;继而提出含PEI接入并考虑其需求响应的配电网规划思路,其中以等值年投资成本和运行成本为最小目标,以配电网变压器、主线路选型以及需求侧响应容量为决策量,建立了含PEI接入的配电网规划模型;最后以含PEI的10 kV配电网为例进行仿真验证,仿真结果验证了模型的有效性与实用性。
文摘The depletion of fossil energy and the deterioration of the ecological environment have severely restricted the development of the power industry.Therefore,it is extremely urgent to transform energy production methods and vigorously develop renewable energy sources.It is therefore important to ensure the stability and operation of a large multi-energy complementary system,and provide theoretical support for the world’s largest single complementary demonstration project with hydro-wind-PV power-battery storage in Qinghai Province.Considering all the multiple power supply constraints,an optimization scheduling model is established with the objective of minimizing the volatility of output power.As particle swarm optimization(PSO)has a problem of premature convergence and slow convergence in the latter half,combined with niche technology in evolution,a niche particle swarm optimization(NPSO)is proposed to determine the optimal solution of the model.Finally,the multiple stations’coordinated operation is analyzed taking the example of 10 million kilowatt complementary power stations with hydropower,wind power,PV power,and battery storage in the Yellow River Company Hainan prefecture.The case verifies the rationality and feasibility of the model.It shows that complementary operations can improve the utilization rate of renewable energy and reduce the impact of wind and PV power’s volatility on the power grid.
基金supported by National Key R&D Program of China(No.2017YFB0903300)National Science Foundation of China(No.51777065)Beijing Natural Science Foundation(No.3182037).
文摘With the gradual upgradation of global energy consumption and the associated development of multi-energy sources,the pace of unified energy planning and design has been accelerated and the concept of multi-energy system(MES)has been formed.The industrial structure of industrial park(IP)consists of production and marketing of multi-energy sources,which makes IP become an ideal application scenario for MES.The coupling between multi-sources raises the complexity level of IP,which requires the demand side analysis in IP as it enables customers to actively participate in energy planning and development.This paper presents the concept and operation strategies of integrated demand response(IDR),and its model classification is analyzed in detail.Optimization model and IDR with varying time period are studied in IP to determine their impacts on the system.A detailed survey of different techniques in both operation strategies and model classification is presented and the classification is based on pros and cons.Finally,key issues and outlooks are discussed.
