Categorization and evaluation of voltage sag control methods and equipment: A study

Voltage sags have emerged as major problems in power quality in the recent years and the categorization of methods and tools available for reducing voltage sag is becoming increasingly crucial. Modern approaches and tools for minimizing voltage sag are based on an extensive research, aimed at developing effective categorization techniques to assist end users in selecting the most suitable tools and settings. To begin, this research provides a comprehensive assessment of the existing voltage sag control methods and equipment. Furthermore, it presents a classification scheme that divides voltage sag control strategies into three groups: those implemented by the power provider, the customer, and the equipment manufacturer. A classification system for voltage sag control equipment based on the number and type of power supply, taking into account the variations between single and dual power supply voltage sag control devices is also proposed. Additionally, to assist consumers in selecting the optimal device, this research demonstrates how primary voltage sag control equipment utilizes the preventive measures and an integrated software.