A comprehensive software suite for power grid stability monitoring based on synchrophasor measurements

Incorporating synchrophasor technologies into realtime operations greatly increases system operators' situational awareness of grid activities. In this paper, we present a suite of software system (named Grid Stability Awareness System — GSAS) to monitor and analyze power grid real-time stability using wide-area synchrophasor measurements. GSAS consists of five analytical and monitoring tools including an Oscillation Monitoring Tool, a Voltage Stability Monitoring Tool, and a Transient Instability Monitoring Tool, an Angle Difference Monitoring Tool and an Event Detection Tool. Working together, these tools are able to address the three key stability problems in a power grid, i.e., small signal stability, voltage stability and transient stability. The architecture of GSAS is described, and key features and functionalities of the five monitoring tools are also discussed in the paper.