Evaluating Lightning Channel-Base-Current Function Parameters for Identifying Interdependence of Wavefront and Tail by PSO Method

Ramarao, Gandi; Chandrasekaran, K.

doi:10.1109/temc.2018.2811859

Cited by 10 publications

(2 citation statements)

References 29 publications

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“…The selected magnitude is the typical magnitude of the negative first return stroke with 50% and 5% occurrences worldwide. The replication of the magnitude and its waveshape follows the assumption made towards the Heidler function parameters in the IEC 62305-1 [32].…”

Section: Lightningmentioning

confidence: 93%

Electrical Performance of Polymer-Insulated Rail Brackets of DC Transit Subjected to Lightning Induced Overvoltage

et al. 2021

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The fourth rail transit is an interesting topic to be shared and accessed by the community within that area of expertise. Several ongoing works are currently being conducted especially in the aspects of system technical performances including the rail bracket component and the sensitivity analyses on the various rail designs. Furthermore, the lightning surge study on railway electrification is significant due to the fact that only a handful of publications are available in this regard, especially on the fourth rail transit. For this reason, this paper presents a study on the electrical performance of a fourth rail Direct Current (DC) urban transit affected by an indirect lightning strike. The indirect lightning strike was modelled by means of the Rusck model and the sum of two Heidler functions. The simulations were carried out using the EMTP-RV software which included the performance comparison of polymer-insulated rail brackets, namely the Cast Epoxy (CE), the Cycloaliphatic Epoxy A (CEA), and the Glass Reinforced Plastic (GRP) together with the station arresters when subjected by 30 kA (5/80 µs) and 90 kA (9/200 µs) lightning currents. The results obtained demonstrated that the GRP material has been able to slightly lower its induced overvoltage as compared to other materials, especially for the case of 90 kA (9/200 µs), and thus serves better coordination with the station arresters. This improvement has also reflected on the recorded residual voltage and energy absorption capacity of the arrester, respectively.

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Section: Lightningmentioning

confidence: 93%

Electrical Performance of Polymer-Insulated Rail Brackets of DC Transit Subjected to Lightning Induced Overvoltage

et al. 2021

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“…To solve the non-convex optimization problem, we convert it into a series of energyefficient resource allocation problems based on the equivalent transformation method. The resource allocation problem for each time slot is further solved based on particle swarm optimization (PSO) method [4]. Some major contributions of this paper are given below.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Wireless Information and Power Transfer Scheme for Nano-Empowered Vehicular Networks

Feng

Ali

Iqbal

et al. 2021

IEEE Trans. Intell. Transport. Syst.

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In this paper, we investigate the wireless power transfer and energy-efficiency (EE) optimization problem for nano-centric vehicular networks operating over the terahertz band. The inbody nano-sensors harvest energy from a power station via radio-frequency signal and then use the harvested energy to transmit data to the sink node. By considering the properties of terahertz band (i.e., sensitivity to distance and frequency over the communication path), we adopt the Brownian motion model to develop a time-variant terahertz channel model and to describe the mobility of the nano-sensors. Thus, based on the channel model and energy resources, we further develop a long-term EE optimization problem. The EE optimization is further converted into a series of energy-efficient resource allocation problems over the time slots via equivalent transformation method. The resource allocation problem for each timeslot, which is formulated as a mixed integer nonlinear programming (MINLP), is solved based on the particle swarm optimization (PSO) method. In addition, a dynamic PSO-based EE optimization (DPEEO) algorithm is developed to obtain the sub-optimal solution for the EE optimization problem. By exploiting the special structure of the reformulated problem, an improved DPEEO algorithm, is presented which can handle the problem's constraints quite well, decreases the research space, and greatly reduces the length of the convergence time. Simulation results validate the theoretical analysis of our system.

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Optimization of Flux Barrier in Asymmetric V-Shaped IPM Motor and Analysis of Its Impact on Performance

Naik,

Bag,

Chandrasekaran

2023

Arab J Sci Eng

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Evaluating Lightning Channel-Base-Current Function Parameters for Identifying Interdependence of Wavefront and Tail by PSO Method

Cited by 10 publications

References 29 publications

Electrical Performance of Polymer-Insulated Rail Brackets of DC Transit Subjected to Lightning Induced Overvoltage

Electrical Performance of Polymer-Insulated Rail Brackets of DC Transit Subjected to Lightning Induced Overvoltage

Dynamic Wireless Information and Power Transfer Scheme for Nano-Empowered Vehicular Networks

Optimization of Flux Barrier in Asymmetric V-Shaped IPM Motor and Analysis of Its Impact on Performance

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