Minimizing Harmonic Distortion Impact at Distribution System with Considering Large‐Scale EV Load Behaviour Using Modified Lightning Search Algorithm and Pareto‐Fuzzy Approach

Abstract

This research is focusing on optimal placement and sizing of multiple variable passive filter (VPF) to mitigate harmonic distortion due to charging station (CS) at 449 bus distribution network. There are 132 units of CS which are scheduled based on user behaviour within 24 hours, with the interval of 15 minutes. By considering the varying of CS patterns and harmonic impact, Modified Lightning Search Algorithm (MLSA) is used to find 22 units of VPF coordination, so that less harmonics will be injected from 415 V bus to the medium voltage network and power loss is also reduced. Power system harmonic flow, VPF, CS, battery, and the analysis will be modelled in MATLAB/m-file platform. High Performance Computing (HPC) is used to make simulation faster. Pareto-Fuzzy technique is used to obtain sizing of VPF from all nondominated solutions. From the result, the optimal placements and sizes of VPF are able to reduce the maximum THD for voltage and current and also the total apparent losses up to 39.14%, 52.5%, and 2.96%, respectively. Therefore, it can be concluded that the MLSA is suitable method to mitigate harmonic and it is beneficial in minimizing the impact of aggressive CS installation at distribution network.

A comprehensive review on electric vehicles smart charging: Solutions, strategies, technologies, and challenges

“…Furthermore, in [12], EVs have been integrated with off-grid distribution systems for bidirectional smart charging with the aim of reliability improvement, in which the understudied system was integrated with distributed generation units. The authors in [131] have investigated to minimize the harmonic distortion caused by large-scale EV penetration in the distribution system. Moreover, in [132], EV and solar photovoltaic are integrated with real-time optimization of the reactive power of the distribution system to improve the operational costs, power losses, and voltage profile.…”

Power loss mitigation and voltage profile improvement by optimizing distributed generation

“…characteristic. The detail on four enhancements made at the original LSA to produce MLSA are at [19][20][21][22].…”

Selection of C-Type Filters for Reactive Power Compensation and Filtration of Higher Harmonics Injected into the Transmission System by Arc Furnaces

“…The second harmonic current can be increased when the presence of LC-type filters is disregarded during the design of a C-type filter for reducing out the second harmonic current or when third harmonic filters are installed without a second harmonic filter. It is worth noting that active filters can be used for reactive power compensation and filtration of higher harmonics, but due to the very high power of arc furnaces and the high cost of active filters it is usually unreasonable and therefore passive filters or less often hybrid filters are used [23][24][25]. Static Var Compensator (SVC) systems are also applied to compensate arc furnaces [26][27][28].…”