TY - JOUR

T1 - Flicker characteristic estimation of an AC electric arc furnace

AU - Lu, Chen Wen

AU - Huang, Shyh Jier

AU - Huang, Ching Lien

N1 - Funding Information:
The authors are grateful to the National Science Council, Taiwan, for the financial support of the project NSC89-22/3–E–006–097. The help with the signal recording from the HK steel enterprise is also appreciated.

PY - 2000/5/1

Y1 - 2000/5/1

N2 - This paper describes the estimation of the stochastic flicker characteristics for an electric arc furnace (EAF) over a complete heat. These characteristics include stationarity, normality and correlation. Besides, the basic statistical probability were assessed by varying sampling period, too. The estimation and the assessment were implemented by a microcomputer-based instrumentation system. The test results for a typical AC arc furnace show that: (1) most flicker characteristics are stationary or weakly stationary during different periods of a heat cycle, but most of their probability density functions are not normally distributed; (2) the voltage and current fluctuations in the same phase are highly correlated; (3) the flicker converges at a value with a ±5% deviations from the value based on a basic sampling period, if the sampling period is decreased below 12 s.

AB - This paper describes the estimation of the stochastic flicker characteristics for an electric arc furnace (EAF) over a complete heat. These characteristics include stationarity, normality and correlation. Besides, the basic statistical probability were assessed by varying sampling period, too. The estimation and the assessment were implemented by a microcomputer-based instrumentation system. The test results for a typical AC arc furnace show that: (1) most flicker characteristics are stationary or weakly stationary during different periods of a heat cycle, but most of their probability density functions are not normally distributed; (2) the voltage and current fluctuations in the same phase are highly correlated; (3) the flicker converges at a value with a ±5% deviations from the value based on a basic sampling period, if the sampling period is decreased below 12 s.

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U2 - 10.1016/S0378-7796(99)00080-2

DO - 10.1016/S0378-7796(99)00080-2

M3 - Article

AN - SCOPUS:0033891665

VL - 54

SP - 121

EP - 130

JO - Electric Power Systems Research

JF - Electric Power Systems Research

SN - 0378-7796

IS - 2

ER -