کنفرانس مهندسی برق ایران

صفحه اصلی / سی امین کنفرانس بین المللی مهندسی برق

Technical and Economic Analysis of Voltage Sags Mitigation Methods

نویسندگان :

Sina Shakeri¹ Javad Khajouei² Saeid Esmaeili³

1- دانشگاه شهید باهنر کرمان 2- دانشگاه شهید باهنر کرمان 3- دانشگاه شهید باهنر کرمان

کلمات کلیدی :

Area of vulnerability،Economic analysis،Sensitive load،Voltage sag

چکیده :

Nowadays, sensitive equipment to voltage sags such as adjacent speed drives (ASD) and load commutated inverter (LCI) drives are being used by many industrial customers throughout the world. The voltage sags often lead to sensitive equipment failure or malfunctioning of industrial processes which causes financial losses to industrial customers. To reduce voltage sags financial losses, industrial customers use the network-based or device-based mitigation methods by evaluating the financial losses owing to voltage sags. There are concerns regarding the use of mitigation methods which are two-fold: (i) the cost of these methods and (ii) the efficiency of these methods. In the literature, mitigation methods have been proposed to address the previous concern and therefore various mitigation techniques have been presented. However, the need to assess the efficiency of mitigation techniques to address both concerns has been neglected. Therefore, this paper assesses the efficiency of voltage sag mitigation methods and their costs by determining the area of vulnerability and calculating expected sag frequency with and without mitigation methods. The area of vulnerability and expected sag frequency help to estimate the annual number of voltage sags frequency and justify the voltage sag mitigation solutions technically and economically. The large copper mine electrical network in Iran is used to show the efficiency of mitigation methods.

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