Harmonic Mitigation Using Passive Harmonic Filters: Case Study in a Steel Mill Power System

Byungju Park, Jaehyeong Lee, Hangkyu Yoo and Gilsoo Jang
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Byungju Park: PQ Tech Incorporation, Suwon 16690, Korea
Jaehyeong Lee: School of Electrical Engineering, Korea University, Seoul 02841, Korea
Hangkyu Yoo: PQ Tech Incorporation, Suwon 16690, Korea
Gilsoo Jang: School of Electrical Engineering, Korea University, Seoul 02841, Korea

Energies, 2021, vol. 14, issue 8, 1-16

Abstract: In this study, we mitigated the harmonic voltage in a power system that contained the roughing mill (RM) and finishing mill (FM) motor drives. AC/DC converter type RM drive is a non-linear, large-capacity varying load that adversely affects power quality, e.g., a flicker, voltage distortion, etc. The voltage drop can be compensated within a certain limit by using the proper capacity of a power capacitor bank. In addition, the voltage distortion can be controlled as per the guidelines of IEEE Std. 519 using the passive harmonic filter corresponding to the characteristic harmonics of the motor drive load. The passive harmonic filter can provide an economical solution by mitigating the harmonic distortion with a proper reactive power supply. However, at the planning level, attention should be paid to avoid system overvoltage that is caused by the leading power under light load conditions and also the problem of parallel resonance between the harmonic filter and the step-down transformer. In addition, when designing the filter reactor, the K-factor and peak voltage must be considered; the filter capacitor also requires a dielectric material that considers the harmonic peak voltage. The purpose of this study was to acquire a better understanding of the filter applications as well as verify the field measurement, analysis, and design of harmonic filters together with its performance.

Keywords: converter; easy power system software; harmonic distortion; hi-pass filter; IEEE Std. 519; passive harmonic filter; single tune filter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (12)

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