Diagnosis of the power quality in the welding warehouse of the company CIAUTO Cia. Ltda.

Abstract

In this article a diagnosis of the power quality in the welding hall of the company CIAUTO Cía. Ltda. is carried out, following the Ecuadorian regulation No. ARCERNNR - 002/20. The electrical parameters are recorded with the FLUKE 435-II and analyzed according to the quality of the product and the consumer. The results reveal that the power factor is below 0.92, indicating inefficient use of electrical energy. In the evaluation of the quality of the product, it is observed that the voltage remains within the established limits, although it decreases considerably during working hours, on the other hand, the Flicker does not meet the standard, also the individual harmonic distortion specifically in the fifth harmonic 20% of variables recorded exceed 5%, unlike the total harmonic voltage distortion (THD) that meets the regulation. Likewise, an analysis of the quality in relation to the consumer is performed, revealing alarming levels of current consumption that exceed the nominal levels of the 800 kVA transformer at 325 A, also 90% of individual current harmonics greatly exceed the limits and the total demand distortion (TDD) has records of harmonics up to 80.04%. Finally, it is determined that the power quality in the welding hall of CIAUTO Cía. Ltda. presents deficiencies in power factor, Flicker and harmonic distortion. These results highlight the need to take measures to improve energy efficiency and ensure power quality for both the product and the consumer.

Keywords

• electrical diagnostics
• power quality
• voltage
• current
• harmonics