An Arc Furnace as a Source of Voltage Disturbances—A Statistical Evaluation of Propagation in the Supply Network

Abstract

This article presents the results of measuring Pst indicators at three points of a power system supplying a large source of voltage disturbances—an arc furnace. Measurements were made at three voltage levels: 30, 110, and 400 kV. Recorded values of Pst at each point were subjected to statistical analysis, the probability distributions were adjusted to their histograms, and the nature of changes in the basic parameters of these distributions with the distance from the source of disturbances was indicated. The adjustments of the distributions were made using a modified firefly algorithm.

Evaluation of Flicker of Light Generated by Arc Furnaces

“…Statistical analysis of light flicker indices in networks supplying arc furnaces is presented by the authors of [41]. An analysis was performed for 10-minute measurement intervals of the flicker indicators.…”

Analysis of the Factors Having an Influence on the LC Passive Harmonic Filter Work Efficiency

“…), PHFs are commonly used in practice because they are low cost, simple in structure, easy to maintain, highly efficient in terms of individual harmonic reduction, and have easy applicability in low voltage (LV), medium voltage (MV), and high voltage (HV) systems [5][6][7]. The PHFs are organized in different structures described in the literature [8]: the single-tuned filter [9][10][11][12][13][14][15][16], double-tuned filter [17][18][19][20][21][22][23][24][25][26][27][28], triple-tuned filter [29,30], series passive filter [31], hybrid passive filter [32,33], damped filters (first, second, third-order filter, and C-type filter) [34][35][36][37][38][39][40][41], filter group [42][43][44][45][46][47][48][49], etc.…”

Modeling of Voltage Fluctuations Generated by Arc Furnaces

“…The single-phase equivalent diagram of the arc furnace supply network is being considered (similarly to the presented article). The disruptive influence of arc furnaces on the quality of energy in the power system is presented in the article [24]. The dependence of voltage fluctuations (characterized by flicker indicators) on the short-circuit power of the supply network was analyzed.…”