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The world is in an energy transition. Energy storage systems are one of the keys helping in integrating and utilizing renewable energy in an optimal level. However, energy storage is already an important part of the power system ranging from small applications as in the electronic devices to a bigger size of storage used in power stations and recently to be used as power sources to backup renewable...
The increased penetration of electric vehicle (EVs) may results in voltage rise or drop at the distribution node (DN). If EVs are charged at a place to be called as charging station (CS), the vehicle to grid (V2G) concept can be easily achieved. This paper presents an active and reactive power control in V2G system based on node voltage variations and energy availability of EVs' batteries. It addresses...
This paper presents an optimal automatic residential load planning including plug-in hybrid electric vehicles (PHEVs) and energy storage devices. The goal of planning is minimizing the payment of consumer. The loads are divided to two categories, controllable appliances and uncontrollable appliances. Energy storage system in two types, centralized and distributed, has simulated in this paper. PHEV...
This paper presents the design and implementation of a standalone photovoltaic (PV) system using ultracapacitors as an energy storage unit. Ultracapacitors offer a high power density and long life cycle and could improve PV systems efficiency when subjected to peak loads. The setup is used to evaluate the direct parallel connection between the PV panel and the ultracapacitors bank without additional...
Solar power generation is considered one of the most promising distributed generation (DG) technologies that is utilized in microgrids. Power intermittency and voltage swings of solar resource negatively affect the reliability of microgrids. Battery energy storage systems (BESS) are incorporated in such microgrids to mitigate the power intermittency of photo-voltaic (PV) system. However, this power...
In this paper, two control strategies involving “continuous” and “ON/OFF” operation of the diesel generator in the solar photovoltaic-wind-diesel-battery hybrid systems are modeled. The objective of these proposed models is to minimize the system's daily operation cost while finding the optimal power flow considering the intermittent solar and wind resources, the battery state of charge and the fluctuating...
Lead acid batteries are one of the most commonly used storage devices in residential renewable energy systems. This paper explains the procedure of calculating required capacity of lead acid battery for a residential based renewable energy system. A renewable energy system (RES) is introduced based on a topology of multi-port converter. The basic required stored energy is defined using averaged load...
An accurate battery model is one of the most important factors to improve the capability of battery state of charge (SoC) estimation. In this paper, battery hysteresis behaviors under different SoC are considered to decrease battery model error, and the hysteresis voltage based battery model (HVBBM) is presented. The experiment result shows that this model can describe the battery discharging process...
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