Integrated Energy Micro-Grid Planning Using Electricity, Heating and Cooling Demands

He Huang,Dapeng Liang,Zhen Tong

doi:10.3390/en11102810

Abstract

Many research works have demonstrated that taking the combined cooling, heating and power system (CCHP) as the core equipment, an integrated energy system (IES), which provides multiple energy flows by a combination of different energy production equipment can bring obvious benefit to energy efficiency, CO2 emission reduction and operational economy in urban areas. Compared with isolated IES, an integrated energy micro-grid (IEMG) which is formed by connecting multiple regions’ IES together, through a distribution and thermal network, can further improve the reliability, flexibility, cleanliness and the economy of a regional energy supply. Based on the existing IES model, this paper describes the basic structure of IEMG and built an IEMG planning model. The planning was based on the mixed integer linear programming. Economically, construction planning configuration are calculated by using known electricity, heating and cooling loads information and the given multiple equipment selection schemes. Finally, the model is validated by a case study, which includes heating, cooling, transitional and extreme load scenarios, proved the feasibility of planning model. The results show that the application of IEMG can effectively improve the economy of a regional energy supply.

Highlights

Increasing pressure on energy resources endowment and environmental problems resulting from the use of the energy internet (EI) are a major focus of energy researchers and practitioners [1].Combined cooling, heating, and power unit (CCHP) technology integrates production of power from electrical and thermal systems, and solves problems caused by their separate decision-making frameworks
In CASE 4, a 4 MW PV source and a 9.5 MW CCHP are constructed in each district, planning result each region in Figure 7,cost andis the overall economic are the capacity of the substation is 2for
This paper presents an integrated energy micro-grid (IEMG) planning model with distributed photovoltaic by mixed integer linear programming (MILP)

Summary

Introduction

Increasing pressure on energy resources endowment and environmental problems resulting from the use of the energy internet (EI) are a major focus of energy researchers and practitioners [1].Combined cooling, heating, and power unit (CCHP) technology integrates production of power from electrical and thermal systems, and solves problems caused by their separate decision-making frameworks. With support of a CCHP, an integrated energy systems (IES) can provide multiple energy flows (electricity, heating, steam, cooling, and desalination) by combining different energy production equipment (natural gas, solar, wind, etc.). It has become widely accepted as one of the most efficient examples of integration of multiple energy sources [2]. The biggest benefit of IES is that different kinds of energy production systems are no longer planned separately or operated independently. Its position in the energy network has become increasingly important

Methods

Results

Conclusion