Implementing the Real-Time Voltage Stability Ananlysis Tool on a Large Scale System Model for IROL Assessment in the Western Interconnection

This paper introduces a success story about how Peak Reliability (formerly, WECC Reliability Coordinator) collaborated with V&R Energy and Peak member entities to implement an online voltage stability analysis tool in a control room setting for real-time assessment of Interconnection Reliability Operating Limits (IROLs) in the Western System. Major technical challenges and the resolutions, including modeling aspects, software improvements, validation and integration efforts, are presented in the paper. Lessons learned and future work are discussed in the end.