Utilizing WAMS Technology for Voltage Stability Analysis in the Mongolian Power System

Voltage stability is a critical factor in maintaining the reliability and efficiency of power systems, especially in regions with growing electricity demand and expanding infrastructure, such as Mongolia. This paper explores the application of Wide-Area Monitoring Systems (WAMS) technology for voltage stability analysis in the Mongolian power system. WAMS utilizes real-time data from Phasor Measurement Units (PMUs) to provide system operators with improved situational awareness and more precise control over grid stability. Following significant disruptions to Mongolia's integrated energy system in years such as 2004, 2006, 2015, and 2018, which resulted in instability and resource loss, the Relay Protection and Automation Department of the National Dispatching Center initiated the deployment of the WAMS in 2019 to improve reliability in the energy infrastructure. Through the simulation, and analysis, we demonstrated that WAMS technology significantly enhances the ability to monitor, predict, and respond to voltage instability events, contributing to the overall robustness of the Mongolian power system.