Over the past few years, Entergy experienced massive outages during hurricane passages. In particular, Hurricane Katrina and Gustav, both of which caused outages to about one million customers prompted the need for a system to improve reliability of the system during periods of high stress. It became clear that this pattern will continue to repeat and will likely increase with continued global warming. To counter this, Entergy decided to expand its WAMS (Wide Area Measurement System) with the funding support from the US DoE SGIG (Smart Grid Investment Grant) Award.
The enhanced system will include an aggressive expansion of the Entergy PMU (Phasor Measurement Unit) synchrophasor system from 22 locations across four southern states. An expanded Phasor System is necessary for Intelligent Islanding, automatic control designs to respond to grid oscillations, and wide-area monitoring to understand the state of the grid outside of the Entergy system. A highly secure, robust, and scalable PI infrastructure is the key foundation to the synchrophasor data collection, archiving, management and execution of the Entergy Phasor System.
An expanded PI-based Phasor Data Concentrator (PDC) architecture framework is needed to extract high frequency, high bandwidth data from the phasor measurement units at the controlled island substations and distribute the information in the fast-speed to the centralized PDC for real time grid monitoring, visualization, analysis and early warning, to improve the critical decision making.
Floyd Galvan is a project lead for Research & Development at Entergy Corp., specializing in phasor measurement and control, grid visualization, long-term planning and regional energy pricing. He has held positions within the North American Synchro-Phasor Initiative, the Power Systems Engineering Research Center and the CEATI Power Systems, Planning and Operations Committee, and served on committees at the National Science Foundation and the Department of Energy. He holds a BSEE degree from Texas A&M University-Kingsville and a master’s degree from Southern Methodist University. He is a licensed professional engineer in Texas.
Prior to joining OSIsoft in 2006, Ann worked for an electric utility company for extensive years in Grid Operations. In her role within OSIsoft Business Development, Ann works closely with T&D Users Group Community to assist the PI T&D industry customers to achieve effectiveness with the PI infrastructure and provide support for various utility enterprise initiatives.