An Intelligent Hybrid Energy Management System for a Smart House Considering Bidirectional Power Flow and Various EV Charging Techniques

Abstract

Compelled by environmental and economic reasons and facilitated by modern technological advancements, the share of hybrid energy systems (HES) is increasing at modern smart house (SH) level. This work proposes an intelligent hybrid energy management system (IHEMS) for an SH connected to a power network that allows a bidirectional power flow. The SH has electrical and thermal power loops, and its main components include renewable energy from wind and photovoltaics, electric vehicle (EV), battery energy storage system, a fuel cell which serves as a micro-combined heat and power system, and a boiler. The proposed IHEMS models the components of the SH, defines their constraints, and develops an optimization model based on the real coded genetic algorithm. The key features of the developed IHEMS are highlighted under six simulation cases considering different configurations of the SH components. Moreover, the standard EV charging techniques are compared, and it is observed that the charging method which is flexible in timing and power injection to the EV is best suited for the economic operation of the SH. The simulation results reveal that the proposed IHEMS minimizes the 24-hour operational cost of the SH by optimally scheduling the energy resources and loads.

Internet of things energy system: Smart applications, technology advancement, and open issues

“…IoT also supports smart city applications, 28 especially smart buildings, [44][45][46] as well as smart houses, [47][48][49][50][51][52] smart residential microgrid, 53 and smart power grids, [54][55][56][57] as illustrated in Figure 7.…”

Reconfigurable solar photovoltaic systems: A review

“…As a result, the overcurrent protection coordination and the operation of voltage regulators may get affected. Suitable protection methods should be implemented for feeders to overcome these issues by considering feeder basis studies and allowing bidirectional power flow as proposed in the literature [ 21 , 22 , 23 , 24 ].…”

Insulation Monitoring Method for DC Systems with Ground Capacitance in Electric Vehicles

“…The insulation of EVs decreases due to rain, dampness, collision, and other reasons arising from the long-term exposure of EVs and charging equipment to the outdoor environment [1,2]. The DC system of EVs is connected to numerous power electronic devices, including the motor converter, battery charger, air conditioner, and DC-DC converter [3], and the overall connections may form a DC power microgrid system when EV is charging [4,5]. Insulation failure of any equipment affects the safety of the entire system.…”

“…Similar definitions of v 12 , v 21 , and v 22 are provided to facilitate the calculation, and E 1 and E 2 are used to present natural exponential function. The following equation is then obtained from(5).…”