Impact of Torsional Resonance in Turbine-Generator Shaft Due to Multiple EAF Operation
Journal Title: IOSR Journals (IOSR Journal of Electrical and Electronics Engineering) - Year 2017, Vol 12, Issue 3
Abstract
Among the many nonlinear loads, electric arc furnace (EAF) is a potential source of sub-harmonic currents. Again, turbine-generator (T-G) shaft possesses natural frequencies in the sub-synchronous/subharmonic range. If those sub-harmonic frequencies match to natural frequencies there occur amplification of torsional oscillating torques transmitted among the masses of T-G shaft. This may lead to damage rotating shaft, especially T-G shaft, in the system. This paper assesses the severity of amplified oscillating torques on TG shaft due to multiple EAFs connected to same point of common coupling (PCC). This paper also assesses the impact due to relative location of EAFs from power stations. For this purpose, a lumped-mass model of T-G shaft and mathematical model of electric arc have been considered. EAFs have been connected to the same PCC and their effects on T-G shaft have been measured with/without resonant excitation of torsional modes.
Authors and Affiliations
Md. Minarul Islam, Abdul Hasib Chowdhury
Keywords
Related Articles
- EP ID EP387162
- DOI 10.9790/1676-1203015163.
- Views 166
- Downloads 0
Modeling And Simulation of Loads Into Existing Distribution Network System Using MATLAB/Simulink
This paper presents the detail model of load and other devices in distribution network systems (DNS). Simulation and modeling is done using MATLAB/Simulink software package. The proposed model is user friendly and can be...
Artificial Neural Network Based Model for Temperature Prediction of an Industrial Oven
Industrial ovens often consume a considerable amount of the electrical energy and have a significant effect on the quality of the product and the production cost. The cost of energy all over the world is increasing and t...
Removal of EMG Artifacts from Multichannel EEG Signal Using Automatic Dynamic Segmentation and Adaptive Thresholding with Multilevel Decomposed Wavelets
Background: Like the brain, muscles also generate electrical signals. These signals are picked up by EEG electrodes and become muscle artifacts in EEG recording. MA is looking like fast oscillations. EEG signals disturbe...
Solar PV/Battery System Analysis for Faculty of Engineering Building, Rivers State University, Port Harcourt, Nigeria.
The incessant power failure in the Faculty of Engineering main building, Rivers State University, Port Harcourt, Nigeria, has made the faculty and departmental offices to resort to private generators that cause air and n...
Investigation of MPPT Methods Used In PV Systems
In this study, Maximum Power Point Tracking (MPPT) methods are investigated and an analysis of the main MPPT methods is performed. Incremental Conductance, Perturb& Observe, Open-Circuit Voltage, Short-Circuit Current, F...