scholarly journals Integrated Energy System Optimization Based on Standardized Matrix Modeling Method

2018 ◽  
Vol 8 (12) ◽  
pp. 2372 ◽  
Author(s):  
Jingchao Li ◽  
Yulong Ying ◽  
Xingdan Lou ◽  
Juanjuan Fan ◽  
Yunlongyu Chen ◽  
...  
Keyword(s):  
Energy Flow ◽  
Nonlinear Problems ◽  
System Optimization ◽  
Energy System ◽  
Optimization Method ◽  
Modeling Method ◽  
Matrix Modeling ◽  
System Components ◽  
Integrated Energy System ◽  
Energy Conversion Devices

Aiming at the optimization of an integrated energy system, a standardized matrix modeling method and optimization method for an integrated energy system is proposed. Firstly, from the perspective of system engineering, the energy flow between energy conversion devices is used as a state variable to deal with nonlinear problems caused by the introduction of scheduling factors, and a standardized matrix model of the integrated energy system is constructed. Secondly, based on the proposed model, the structural optimization (i.e., energy flow structure and equipment type), design optimization (i.e., equipment capacity and quantity), and operation optimization for the integrated energy system can be achieved. The simulation case studies have shown that the proposed integrated energy system standardized matrix modeling method and optimization method are both simple and efficient, and can be effectively used to decide the system components and their interconnections, and the technical characteristics and daily operating strategy of the system components.

scholarly journals A Unified Energy Bus Based Multi-energy Flow Modeling Method of Integrated Energy System

2019 ◽  
Vol 159 ◽  
pp. 418-423 ◽  
Author(s):  
Peng Li ◽  
Bo Dong ◽  
Hao Yu ◽  
Chengshan Wang ◽  
Yanda Huo ◽  
...  
Keyword(s):  
Energy Flow ◽  
Energy System ◽  
Modeling Method ◽  
Flow Modeling ◽  
Integrated Energy System

scholarly journals A comprehensive energy system optimization method considering variable operating condition characteristics of equipment

2021 ◽  
Vol 256 ◽  
pp. 02029
Author(s):  
Yongli Wang ◽  
Suhang Yao ◽  
Siyi Tao ◽  
Yuze Ma ◽  
Yanchao Lu
Keyword(s):  
System Optimization ◽  
Energy System ◽  
Optimization Method ◽  
Operating Conditions ◽  
Optimal Scheduling ◽  
Scheduling Scheme ◽  
Load Rate ◽  
Integrated Energy System ◽  
Scheduling Method ◽  
Variable Operating Conditions

The economy of the Regional Integrated Energy System (RIES) scheduling scheme is affected by the parameter accuracy of different energy conversion equipment models. The traditional static energy hub (EH) model regards the equipment efficiency as a constant and ignores the variable condition characteristics of the equipment efficiency changing with the load rate. This paper presents an optimal scheduling method of RIES considering the characteristics of equipment under variable operating conditions. Firstly, the architecture of the integrated energy system is analyzed. Secondly, based on the DEH model, an optimal scheduling method of RIES was proposed considering the characteristics of equipment under variable operating conditions. Finally, an optimal scheduling analysis is performed for a typical RIs. The results show that the proposed method can improve the accuracy of the equipment model and reduce the cost prediction error by considering the variable operating conditions of the equipment, thus providing a more economical scheduling scheme for Ries.

scholarly journals A Marginal Contribution Theory-Based Energy Efficiency Contribution Analysis for Integrated Energy System

2021 ◽  
Vol 9 ◽  
Author(s):  
Shihai Yang ◽  
Mingming Chen ◽  
Qiang Zuo
Keyword(s):  
Energy Efficiency ◽  
Energy Flow ◽  
Energy System ◽  
Efficiency Index ◽  
Efficiency Analysis ◽  
Analysis Method ◽  
Weighted Directed Graph ◽  
Integrated Energy System ◽  
Energy Conversion Devices ◽  
Energy Efficiency Analysis

The energy efficiency analysis is a prerequisite for the construction of the integrated energy system (IES). In this study, a novel energy efficiency analysis method is proposed considering different energy subsystems in the IES. First, the energy efficiency index of the subsystems and conversion devices is formed for elaborating their influence on the IES. The IES is composed of four energy subsystems, i.e., power/gas/heat/cooling subsystems, and six energy conversion devices. Next, the energy efficiency contribution models of energy subsystems and conversion devices are proposed based on their energy efficiency index, respectively. Then, in order to calculate the energy flow in the IES, an equivalent topological model of the IES weighted directed graph is proposed to calculate the energy efficiency contribution. Finally, an actual park is employed to illustrate the validity of the proposed analysis method.

scholarly journals An Optimization Method for an Integrated Energy System Scheduling Process Based on NSGA-II Improved by Tent Mapping Chaotic Algorithms

Processes ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 426 ◽  
Author(s):  
Shengran Chen ◽  
Shengyan Wang
Keyword(s):  
Economic Dispatch ◽  
Energy System ◽  
Optimization Method ◽  
Nsga Ii ◽  
Tent Map ◽  
Chaos Optimization ◽  
Basic Model ◽  
Proposed Model ◽  
Integrated Energy System ◽  
Supply Equipment

The integrated energy system is a vital part of distributed energy industries. In addition to this, the optimal economic dispatch model, which takes into account the complementary coordination of multienergy, is an important research topic. Considering the constraints of power balance, energy supply equipment, and energy storage equipment, a basic model of optimal economic dispatch of an integrated energy system is established. On this basis, a multiobjective function solving algorithm of NSGA-II, based on tent map chaos optimization, is proposed. The proposed model and algorithm are applied. The simulation results show that the optimal economic scheduling model of the integrated energy system established in this paper can provide a more economic system operation scheme and reduce the operation cost and risks associated with an integrated energy system. The Non-dominated Sorting Genetic Algorithm-II (NSGA-II) multiobjective function solving algorithm, based on tent map chaos optimization, has better performance and efficiency.

scholarly journals Energy flow optimization method for multi-energy system oriented to combined cooling, heating and power

Energy ◽  
2020 ◽  
Vol 211 ◽  
pp. 118536 ◽  
Author(s):  
Chen Lingmin ◽  
Wu Jiekang ◽  
Wu Fan ◽  
Tang Huiling ◽  
Li Changjie ◽  
...  
Keyword(s):  
Energy Flow ◽  
Energy System ◽  
Optimization Method ◽  
Flow Optimization ◽  
Combined Cooling
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