Optimization and Analysis of a Hybrid Energy Storage System in a Small-Scale Standalone Microgrid for Remote Area Power Supply (RAPS)

Abstract

Abstract:The analysis and application of hybrid energy storage systems (HESSs) in small-scale standalone microgrids for remote area power supply (RAPS) has received extensive attention. This application mode has its own characteristics which must be considered but have not been considered in the existing research. To reflect the common satisfaction of load demands and maximize the utilization of renewable energy in a standalone microgrid, a new index named effective rate of energy storage system (ESS) is proposed. To reflect the true work state of supercapacitor ESS (SC-ESS), the second-level data of field measurements is used in calculation and analysis. To further enhance the operational performance of the HESS, a coordinated control strategy based on state cooperation is adopted. To get a more reasonable and more credible HESS optimization model, the comparison of existing models and proposed model with different considerations on cost and life is provided. In addition, a comparative analysis of technical and economic characteristics improvements is presented for different ESS application schemes in practical projects.

A comparative study of PI, fuzzy‐PI, and sliding mode control strategy for battery bank SOC control in a standalone hybrid renewable system

“…3 Producing electrical energy from sunlight and wind energy, photovoltaic (PV) and wind turbine (WT) technology has gone under rapid development, among other renewable resources. 9,10 Offering significantly longer lifetime and higher power and energy density in comparison with batteries and conventional capacitors, respectively, along with maintenance free and speedy charging/discharging operation make supercapacitors an attractive choice for the HRS in which the load requires high power peaks that lasts for a short-term of time. Fuel cells are nonreversible energy sources that convert hydrogen energy into electrical energy.…”

“…As it is known, unpredictable behavior of PV/WT plants makes the employment of the support systems and storage units necessary. 9,11,12 Therefore, in order to provide short-term high power, protect the fuel cell from overloading, supply the load ripples, 12 and reduce the size of the battery bank or the fuel cell system, supercapasitors are used along with the battery in the proposed microgrid. Fuel cells offer long lifetime along with pollutant free and highly efficient operation.…”

“…Besides, the difficulty of achieving both high energy density and high power density simultaneously through one energy storage technology brings the principle of hybridization of the energy type and power type storage technologies. 9,10 Offering significantly longer lifetime and higher power and energy density in comparison with batteries and conventional capacitors, respectively, along with maintenance free and speedy charging/discharging operation make supercapacitors an attractive choice for the HRS in which the load requires high power peaks that lasts for a short-term of time. 9,11,12 Therefore, in order to provide short-term high power, protect the fuel cell from overloading, supply the load ripples, 12 and reduce the size of the battery bank or the fuel cell system, supercapasitors are used along with the battery in the proposed microgrid.…”

“…9,10 Offering significantly longer lifetime and higher power and energy density in comparison with batteries and conventional capacitors, respectively, along with maintenance free and speedy charging/discharging operation make supercapacitors an attractive choice for the HRS in which the load requires high power peaks that lasts for a short-term of time. 9,11,12 Therefore, in order to provide short-term high power, protect the fuel cell from overloading, supply the load ripples, 12 and reduce the size of the battery bank or the fuel cell system, supercapasitors are used along with the battery in the proposed microgrid. 12,13 The number of the supercapacitors in series and parallel determine the output voltage and energy of the supercapacitor system.…”

Optimal Power Dispatch of Small-Scale Standalone Microgrid Located in Colombian Territory

“…However, the geographical location of Colombia provides renewable resources that can be used to produce electricity. Moreover, the concept of small-scale standalone microgrids for remote area power supply (RAPS) could be a solution to provide electricity to people living in those areas [2]. Some efforts have been made by the Colombian Institute of Planning and Promotion of Energy Solutions for Non-interconnected Areas (IPSE).…”