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 163
- Downloads 0
Balanced Light Output (BLO),method and circuit for maintaining constant light output for LED luminaires.
.
Concept of Decision Support System for Defining The Educational Tourist Attractions in Malang City using Decision Table and Genetic Algorithm
The tourism sector is the backbone of the economy in Malang Regency, especially in Batu City. The development of tourism in the region initially is in the form of agro tourism, which includes apple orchards, strawberries...
Representation of New Electrical Load Tariff to Be Implemented in Future
The demand for electricity in India is increasing every day. As per demand utility is required to generate, transmit and distribute electricity among different consumers. The cost incurred by utility for this purpose is...
Automated dust detection and cleaning system of PV module
This paper describes the development of an automated dust detection and cleaning system which could be used to clean photovoltaic (PV) modules. Dust accumulation is one of the factors which negatively impact of the PV mo...
Using Neural Network with Gradient Descent Adaptive Learning Rate Training Algorithm for Geometric Dilution of Precision Approximation
Thegeometric dilution of precision is widely used as criterion for selecting the best set of the measurement devices. Some methods had been proposed to find the value of theGeometric Dilution of Precision (GDOP), such as...