Journal of Electrical and Power System Engineering (e-ISSN: 2582-5712)

IoT-Based Smart Keychain: Proposed Design

Ayush Shah, Devang Gaudana, Mayur M.Sevak — Tue, 02 Jan 2024 00:00:00 +0530

This paper introduces a cutting-edge IoT solution, revolutionizing keychain management by integrating NodeMCU, a compact Wi-Fi-enabled microcontroller, and an intuitive webpage interface. The smart keychain offers real-time tracking and control, empowering users with the ability to remotely monitor the keychain's location, receive proximity alerts, and trigger actions such as ringing the keys through the dedicated webpage. This not only enhances convenience but also prioritizes security and peace of mind, presenting a practical and efficient solution aligned with modern lifestyles. The ESP-01 module within the keychain dynamically connects to pre-define Wi-Fi networks specified in the program, supporting multiple network configurations. If the keychain moves beyond the Wi-Fi range, the ESP-01 intelligently attempts a connection to available networks, ensuring adaptability. For instance, if keys are misplaced at a friend's house, activating the phone's hotspot prompts the ESP-01 to connect automatically, facilitating easy key retrieval. This dynamic and adaptive connectivity, coupled with the user-friendly interface, positions this smart keychain as an indispensable tool, seamlessly integrating IoT capabilities to elevate keychain management to new heights. In a world where connectivity is paramount, this innovative solution stands as a testament to the intersection of technology and practical utility in enhancing our daily lives.

Electrical Performance of Perovskite (CH3NH3PbX3, X=I, Br, Cl) Solar Cell using Copper Thiocyanate (CuSCN) as Hole Transport Layer

Saurabh Kumar Prajapati, Ajay Shekhar Pandey, Varun Kumar — Mon, 25 Sep 2023 00:00:00 +0530

The comprehensive modelling and numerical simulation of perovskite solar cells were carried out utilizing perovskite materials such “methyl ammonium lead halide (MAPbX₃, MA= CH₃NH₃, X=I, Br, Cl)” with the help of SCAPS tools and measured the measurements like "open-circuit voltage (Voc), fill factor (FF), power conversion efficiency (PCE), and short-circuit current density (J_sc) of the MAPbI₃, MAPbBr₃ and MAPbCl₃ material used as active layer, respectively." “In the envisioned structure of the perovskite solar cell, the copper thiocyanate (CuSCN) molecule plays a crucial role as a hole transmitting Layer (HTL).” The features structure parameters for CH₃NH₃PbI₃ like a fill factor (FF) of 89.56, a power conversion rate (PCE) of 30.83%, an open circuit voltage (Voc) of 1.299V, along with a short circuit current density (Jsc) of 26.50 mAcm^-2, for the structural parameters of CH₃NH₃PbBr₃ include a fill factor (FF) of 84.34, power conversion efficiency (PCE) of 11.05%, an open circuit voltage (Voc) of 15.12V, as well as a short circuit current density (Jsc) that is 1.050 mAcm^-2 and for CH₃NH₃PbCl₃ like a fill factor (FF) of 83.67, density (Jsc) of 1.055 mAcm^-2 according to the findings of the simulation.

Investigating the Performance of PV Fed Flyback Converter Integrated Single Phase Grid System

K. Soujanya, J. Upendar — Fri, 08 Sep 2023 00:00:00 +0530

Solar photovoltaic (PV) systems and other small-scale energy producers are stated to as Distributed Generation (DG) because they usually have connections to the grid at the primary or secondary transmission. These small-scale renewable generators frequently can't be tied to the grid directly; a connection between the power source and the utility distribution grid is necessary due to the generation technology or operational qualities. This manuscript approaches the most frequent problems and difficulties with small-scale solar photovoltaic energy systems connecting to the grid. The critical challenge is that all grid-connected solar PV power facilities must install the requisite instruments to detect solar radiation and the surrounding environment's temperature continuously. Another technological issue for utilities and consumer producers is power quality. Devices and appliances are made to accept power at or close to specific voltage and frequency parameters, and variances may result in appliance inefficiency or damage. As a consequence, management should always be handed over at an approved frequency as well as voltage. To cover this problem, our proposed method is a solar-based Fractional open-circuit voltage controller utilized in gathering the maximum amount of energy despite being impacted by external factors of the flyback Converter. Flyback converters have fundamental components identical to most other changing converter layouts. However, their linked inductor makes them unique, which separates the Converter's electrical input from what it produces. As a result, the voltage received from the simulator has a sinusoidal waveform with minimal harmonics, which is subsequently applied to the load after passing through a filter known as low-pass.

Modeling and Simulation of UPQC for Mitigation of Power Quality Issues

Raksha. S. Naikar, Manjula Sureban — Wed, 27 Sep 2023 00:00:00 +0530

In today's power system, numerous generating units and load centres are linked via massive power transmission as well as distribution networks. Different outages, and interruptions, can result in substantial monetary loss, losses in output, idle labour forces, and other effects. Less pf, less efficient, transformer overheating, and other concerns result from quality degradation. Additionally, a 3P4W distribution system frequently has an unbalanced total load, which leads to an excessive amount of neutral currents. The quality of the power is affected by power electronic systems. Electronic machinery is becoming increasingly sensitive to disturbances and less tolerant of problems like voltage sags, swells, and harmonic. This problem is solved by using specialized power equipment. The UPQC is one of these tools, a structured and functional modern bespoke power tool designed to enhance power quality in systems. A modern power system consists of complex networks that connect several producing units and load centers with extensive power transmission and distribution networks. A reduced power factor and poorer efficiency lead to quality degradation, which causes transformer overheating and other problems. The result of an uneven load on the entire distribution system is a four-wire distribution system with an excessive amount of three-phase neutral current. Power electronic systems also affect power quality. Electronic equipment becomes more noise-sensitive as a result, reducing the tolerance for problems including voltage sag, swell, and harmonic challenges. This issue is fixed by using customized power devices. One of these devices is the unified power quality conditioner (UPQC), which is one of the modern bespoke power devices used to enhance power quality in dispersed systems that is most well-organized and functioning. Through the use of UPQC to link a nonlinear load to a 3P4W system, we will simulate issues with the quality of electricity, such as harmonics and imbalanced voltage and current.

PMU Measurement-Based Prediction of Sensitive Nodes Using ANN

Dr. Shekhappa Ankaliki, Vidya Pawar — Wed, 20 Sep 2023 00:00:00 +0530

To successfully manage critical circumstances, complex power systems require improved observability and visualisation capabilities. By using synchronised phasor measurements, power system dynamics can be quickly controlled with intra-second accuracy. To measure the angle and magnitude of voltage phasors at a bus, a phasor measuring unit (PMU) is used. In this study, a BILP is employed to model the system using topological observation theory. This reduces the number of PMUs needed to monitor the entire system. It was discovered that the system's unknown phasors and the phasors where PMUs are placed are related. The outcomes can serve as the state estimator's initial evaluation. Using PMU data collected under varying load conditions, an ANN is employed to predict the critical nodes in the IEEE 14-Bus system. The outcome of this work is helpful for the operator to take corrective measures to bring bus voltages within the operating limits to ensure the system's reliability and security.