600 MW Thermal Power Station Stability by Boiler Auxiliary Equipment Harmonic Quantification, Analysis and Its Mitigation

Authors

  • K. Thirumavalavan

Abstract

In the Thermal power Stations, the running head of fuel cost, and to reduce the Heat rate Kwh/Kcal, inspire application of Variable Frequency Drives (VFDs). The usage of the VFD in the lager auxiliaries paves the way for reduction in the auxiliary power consumption and for saving of the fuel cost. Nevertheless, using nonlinear loads at thermal power auxiliary power buses and its network prompts harmonics, which is the principal cause of harmonics ill effects, which highlights the reason to be quantified, analyzed and to be eliminate it. This paper aims at the systematic technique of the harmonic measurement, analysis and its mitigation in the VFD of an auxiliary equipment in 600 MW Thermal power station. The paper also recommends the size and quality assurance of the filter used and improvement of the system. The harmonic filter classification is also analyzed for the thermal power station classification. IEEE Standard 519 which got the new revision by the year 2014 [1]recommends Harmonic measurements and Recommends harmonic limits for voltage and current harmonics are compiled for, and further  proposed system of harmonic mitigating circuit is designed accordingly.

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Published

2020-05-10

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Section

Articles