Smart Home Energy Management Optimization Method Considering Energy Storage and Electric Vehicle

Xuan Hou,Tao Huang,Peng Wang,Tao Wang,Jun Wang

doi:10.1109/access.2019.2944878

Abstract

As the last link of an integrated future energy system, the smart home energy management system (HEMS) is critical for a prosumer to intelligently and conveniently manage the use of their domestic appliances, renewable energies (RES) generation, energy storage system (ESS), and electric vehicle (EV). In this paper, we propose a holistic model to center the preference of users when scheduling the involved physical equipment of different natures. Further, a dedicatedly designed charging and discharging strategy for both the ESS and EV considering their capital cost is proposed to integrate them into the HEMS for providing a better flexibility and economic advantages as well as to prolong the life of the batteries. Based on the mixed integer linear programming (MILP) and the proposed model, the energy schedule of the smart home can be derived to guarantee both the lowest cost and the comfort for the users. An illustrative case study is employed to demonstrate the effectiveness of the proposed method.

Highlights

Smart home energy management is an indispensable part of the smart grid environment, which allows load management to be implemented among residents for reducing electricity bills [1], flexibly accommodating high penetrated renewable energies (RES), both at remote and local [2]
The price sold to the utility is considered to be 50% of the RTP, and the power purchased from the utility is limited to 5 kW
To further make a better use of the energy storage system (ESS) and plug-in electric vehicle (PEV) and prolong their battery lives, a designed strategy for charging and discharging power and time period according to the RTP and energy surplus has been integrated into the scheduling problem, which enables an optimal trading plan between home and utility

Summary

Introduction

Smart home energy management is an indispensable part of the smart grid environment, which allows load management to be implemented among residents for reducing electricity bills [1], flexibly accommodating high penetrated renewable energies (RES), both at remote and local [2]. An efficient and economical home energy management system (HEMS) must consider the traditional domestic appliances and emerging ones, such as energy storage system (ESS), electrical vehicle (EV), etc. The emerging appliances provide an opportunity for the HEMS to further lessen costs, mitigate peak pressures and overcome the uncertainty of RES generation [3], [4]. A reasonable charging and discharging control strategy of ESS and EV, which is intelligently regulated by HEMS, will play an important role in the smart home operation

Objectives

Results

Conclusion