Alternative methodology for characterization of industrial process sensitivity to voltage sags

Abstract

methodology that brings more consistent results. Abstrad--This paper proposes an alternative methodology for the characterization of industrial process sensitivity to voltage sags using a power quality (PQ) monitoring system. Several methodologies have been used for voltage sag characterization as can be seen in the literature. The load behavior is classified Considering that PQ monitors do not characterize voltage for each event registered by PQ monitors. Several sags with the methodologies applied in this research, it is characterization methods are analyzed to Select the most required that PQ monitors supply waveform data. MSExcel has consistent methodology for the characterization Of load been used to develop further event characterization with sensitivity.waveform data.

Macroeconomic Assessment of Voltage Sags

“…SARDI(s) 10(i+1)−10i E(s) 10(i+1)−10i (10) where SARDI 10(i+1)−10i is the SARDI seconds between a sag threshold voltage. For example, SARDI 90-80 is the annual interruption duration due to voltage sags which are between sag thresholds of 90% and 80% RMS voltages.…”

“…Let us take customer F 2 as an example and suggest the following hypothetical voltage sag performance scenario with Table 8 to perform (10). On the table, the outage duration stands for the annual outage time of production due to voltage sags.…”

“…CVSC(F2) = 0.35 € cents/kWh (14) As such, in monetary terms, the cost of voltage sags in a year will be approximately 6200 €. The above CVSC calculation is an example showing the application of (10). In order to reach actual estimations, Voltage Sag Tables and Equivalence Matrices have to be prepared for each industry sector.…”

“…Generic assessments of industrial process voltage sag performances are provided by [10][11][12][13] whilst [14][15][16] focused on hot-mill process, textile processes, and the automotive industry, respectively. Moreover, there have been previous case studies for the evaluation of voltage sag costs based on customers from Finland [13], Italy [17], Portugal [18], and Thailand [19].…”

Methodology for assessment of financial losses due to voltage sags and short interruptions

“…Over the years, many methodologies have been developed to assess equipment sensitivity [1][2][3][4][5] and industrial process sensitivity [6][7][8][9][10][11] to voltage sags, and to quantify the financial losses due to voltage sags [12][13][14]. However, current industrial environment requires a more realistic and transparent methodology which can be adopted to suit the needs of all types of industries, without compromising the accuracy of the assessment.…”