Design of minimum cost degradation-conscious lithium-ion battery energy storage system to achieve renewable power dispatchability

Abstract

The application of lithium-ion (Li-ion) battery energy storage system (BESS) to achieve the dispatchability of a renewable power plant is examined. By taking into consideration the effects of battery cell degradation evaluated using electrochemical principles, a power flow model (PFM) of the BESS is developed specifically for use in system-level study. The PFM allows the long-term performance and lifetime of the battery be predicted as when the BESS is undertaking the power dispatch control task. Furthermore, a binary mode BESS control scheme is proposed to prevent the possible over-charge/overdischarge of the BESS due to the uncertain renewable input power. Analysis of the resulting new dispatch control scheme shows that a proposed adaptive BESS state of energy controller can guarantee the stability of the dispatch process. A particle swarm optimization algorithm is developed and is incorporated into a computational procedure for which the optimum battery capacity and power rating are determined, through minimizing the capital cost of the BESS plus the penalty cost of violating the dispatch power commitment. Results of numerical examples used to illustrate the proposed design approach show that in order to achieve hourly-constant power dispatchability of a 100-MW wind farm, the minimum-cost Li-ion BESS is rated 31-MW/22.6-MWh.

Optimal Placement of IoT-Based Fault Indicator to Shorten Outage Time in Integrated Cyber-Physical Medium-Voltage Distribution Network

“…The proposed optimization problem (Equations ( 1)-( 20)) is a mixed-integer nonlinear programming (MINLP) problem, which can be solved by using different optimization methods [25,26]. In this paper, we use the genetic algorithm to solve the objective function to obtain the optimal placement of the IoT-based fault indicator in the power distribution network without acceptable communication coverage.…”

Voltage-Dependent Load-Leveling Approach by Means of Electric Vehicle Fast Charging Stations

“…A dual-layer control strategy has been proposed, which consists of a fluctuation mitigation layer and a power allocation layer [2]. The control schemes of renewable power/ESS hybrid systems have been analyzed, which are used to smooth the power generation of different intermittent sources [3], [4]. A concurrent redispatch scheme has been proposed to help a distribution grid track the dispatch plan and its performance has been assessed with field tests [5].…”

A Review of Modification Methods of Solid Electrolytes for All‐Solid‐State Sodium‐Ion Batteries

“…On the basis of the systematic analysis of year-on-year (YOY) growth in new energy vehicle industry around the world, we can conclude that the vehicle production is increasing, and the demand of energy storage batteries will increase significantly, predictably (Figure 1a). [13][14][15] As battery system can store and supply energy in the low period of power consumption, [16][17][18][19] the demand of storage batteries will also be greatly increased with the rapid proliferation of clean energy (i.e., wind energy, solar energy, and tidal power industries). Therefore, according to the increasing trend of installed capacity of these three industries year by year ( Figure 1b-d), it can be predicted that the demand for battery energy storage systems will also increase significantly.…”