Papers by Dr. Riaz K . ISRANI
International Conference on Science, Engineering and Technology (ICSET 2022), 2022
The quality of tangible electrical power produced by hybrid Renewable Energy System (h-RES) is sc... more The quality of tangible electrical power produced by hybrid Renewable Energy System (h-RES) is scrutinized in this novel article. Additionally, solar-wind-hydro based h-RES is interconnected with unstable nonlinear load. Power quality (PQ) of the proposed h-RES may diminish due to its connection with main electrical grid which includes variable non-linear and linear loads. To trim down this PQ issue, one of the CPD (Custom Power Device) can be used and most suitable CPD for this novel system is UPQC (Unified Power Quality Conditioner). This research work brings down harmonic distortions in voltage and current waveform generated from the proposed system by utilizing of UPQC. Moreover, voltage stability and transient state stability during various fault conditions are also enhanced in the same system. In solar-wind-hydro based h-RES, input energies are unpredictable and connected load on output side is also inconsistent & non-linear. This arrangement is similar as actual electrical grid system.
This paper explores the assessment of mechanical integrity and winding deformation in power trans... more This paper explores the assessment of mechanical integrity and winding deformation in power transformers using Sweep Frequency Response Analysis (SFRA), a non-invasive diagnostic technique. SFRA evaluates the frequency response of transformer windings, enabling the detection of internal issues like winding movement, core displacement, and structural deformations caused by short circuits, aging, or mechanical stresses. By applying an input signal across a broad frequency range, SFRA generates a unique response signature that reflects the transformer's internal condition. Deviations from baseline or reference responses indicate potential mechanical deformations. The study involves systematic SFRA testing on transformers subjected to different stress conditions to analyze the variations in frequency response. Results demonstrate SFRA's sensitivity to mechanical shifts and its effectiveness in early fault diagnosis, potentially extending transformer life and reducing unexpected failures. The findings advocate for SFRA as a valuable tool in predictive maintenance and reliability management for power transformers.
International Journal of Renewable Energy Technology, 2022
The micro-grid with hybrid renewable distributed generators (h-RDGs) are employed to diminish the... more The micro-grid with hybrid renewable distributed generators (h-RDGs) are employed to diminish the pollution, shrink transmission and distribution loss, condense substation requirements, perk up the voltage level of the load, trim down maintenance cost and tiny fuel cost. This proposed review effort includes feasibility of voltage and current profile up gradation on hybrid renewable energy systems (HRES). Typically, FACTS and D-FACTS devices are apposite for this enhancement. Main endeavour is to create the novel optimised model of HRES which encompasses the solar PV system, wind energy conversion system and micro-hydro system. Furthermore, D-FACTS device like UPQC is part of this model to boost up power quality and construct a reliable system. The proposed novel model includes controlled multiple input supply, common AC bus and non-linear load. This HRES based model is more appropriate to provide electricity to isolated places or lonely rural communities far away from the grid power supply.
International Journal of Advance Research and Innovative Ideas in Education, 2021
In this research paper IEEE 14 Bus system is connected with SPV (Solar Photovoltaic) for utilizat... more In this research paper IEEE 14 Bus system is connected with SPV (Solar Photovoltaic) for utilization of renewable energy. This interconnection is evaluated during fault condition. Bus number 2 of IEEE 14 bus system is additionally connected with SPV and Salient pole synchronous generator because remaining buses are synchronous condensers and slack bus, thus bus 2 only modifiable. IEEE 14 bus system has three synchronous condensers which required maintaining power factor in the system. The power capacity of salient pole generator and SPV are same. Due to SPV integration on IEEE 14 bus system, total rotational inertia on bus 2 is reduced. Thus during fault condition near bus 2, all output parameters of generator are scared. By the interconnection of VSG (Virtual Synchronous Generator) on the same bus, it is possible to reduce the disturbance on the generator. Moreover, passive filters are used in VSG for harmonic reduction purpose.
Smoluchowski S Dilemma Revisited a Note on the Fluid Pressure History of the Central Appalachian Fold Thrust Belt
Viability of power quality enrichment in hybrid renewable energy system by the exploit of D-FACTS device: a review
International Journal of Renewable Energy Technology
Inspection of a SPV-coupled IEEE 14 bus system during fault condition
International Journal of Renewable Energy Technology, 2020
In this technical paper, IEEE 14 bus system is connected with a solar photovoltaic (SPV) system. ... more In this technical paper, IEEE 14 bus system is connected with a solar photovoltaic (SPV) system. This interconnection of SPV and IEEE 14 bus system is evaluated during a fault condition. In this paper, the synchronous generator is replaced by a SPV unit. Primarily, a SPV system of 40 MW capacity is connected at bus 2 in place of a 40 MVA synchronous generator. When fault occurs on any of the transmission lines of IEEE 14 bus system, then the system becomes unstable for a short period of time. IEEE 14 bus works on 60 Hz frequency. SPV has an ability to fluctuate output power which depends on input temperature and irradiation of solar. By varying temperature and solar irradiation of SPV, output power may oscillate, but to build constant output power, we assume SPV to be under a standard test condition (STC). During fault condition, output of SPV may disturb and this observational study is the main purpose of this paper. The IEEE 14 bus system has three synchronous condensers (to maint...
Conference Presentations by Dr. Riaz K . ISRANI
International Research Conference on Innovations, Startup and Investments (ICOSTART-2022), 2022
The engineering education can play a significant role to promote and develop a clean, green, and ... more The engineering education can play a significant role to promote and develop a clean, green, and sustainable environment around the world. Recently, COP26 (twenty-sixth session of the Conference of Parties) has showcased the global efforts to address climate change impacts on the Earth. In the same regard, this article is presenting the annual report of energy conservation in RK University through renewable, efficient, and sustainable technologies. This annual testimony concentrates on the energy saving efforts taken by the University through successful execution of roof-top solar power plant, biogas plants, rain-water harvesting system, solar water heater system, energy efficient sensor-based street lights and energy efficient fans. This article also includes various energy conservation computations to realize the important of clean and green energy. This annual report also fulfills the requirement of "Green Campus" as per the UGC and "Swachh Campus" as per the MHRD, Government of India.
Induction Motor (IM) faults, such as air gap eccentricity, rotor faults, short-circuits, and bear... more Induction Motor (IM) faults, such as air gap eccentricity, rotor faults, short-circuits, and bearing faults, can be detected through conditional monitoring, which requires expensive tools. Digital Signal Processing (DSP) offers a cost-effective solution by using IM Current Signature Analysis (IMCSA) to identify faults. Faulty motors exhibit different frequency spectra in their line current compared to healthy ones due to harmonic components. IMCSA detects and analyzes these changes using Lab VIEW software for direct online monitoring. This paper discusses the impact of motor faults, fault tracking, and the use of Fast Fourier Transforms (FFT) for frequency spectrum analysis from analog current data, outlining the transformation process and experimental procedures for fault detection.
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Papers by Dr. Riaz K . ISRANI
Conference Presentations by Dr. Riaz K . ISRANI