Eastern Interconnection Situational Awareness Monitoring System (ESAMS)

Providing situational awareness for grid events that can be seen across the Eastern Interconnection

*ESAMS Daily Report - Forced Oscillation event detected 12/08/2021 20:11 ET - 12/08/2021 20:47 ET*

Background and Motivation

Oscillations can affect the behavior of the entire U.S. electricity interconnection system. Yet, while transmission grid operators have excellent visibility within their footprints, real-time situational awareness outside their footprint is lacking.

In early 2022, the ESAMS real-time notification system successfully demonstrated the value of real-time notifications of forced oscillations to operators, one of the main focuses of critical grid phenomena. ESAMS collects and integrates synchrophasor measurements from throughout the interconnection in real time to produce never-before-seen visibility of the grid phenomena.

- detail of evolution over time of the largest oscillation recorded on Dec. 8, 2022. This trace corresponds to the green circle containing the number 1 in the map above. — *ESAMS Daily Report- detail of evolution over time of the largest oscillation recorded on December 8, 2022. This trace corresponds to the green circle containing the number 1 in the map above*

Table showing Time (EST): 20:11: - 20:47; Frequency: 0.17 Hz; Oscillation Type: Inter-area Oscillations — *Time (EST): 20:11: - 20:47; Frequency: 0.17 Hz; Oscillation Type: Inter-area Oscillations*

This novel new system provides a supplemental source of information on the health of the grid using information that goes well-beyond the capabilities of conventional supervisory control and data acquisition (SCADA) systems and energy management systems (EMS). The project was hosted by PJM and was conducted in partnership with the largest US grid operators in the Eastern Interconnection, also including ISO-NE, MISO, NYISO, Southern Co, SPP, and TVA.

Objective

This work is intended to demonstrate an interconnection-wide, high-level, synchrophasor-based monitoring system for the Eastern Interconnection.

Sponsor

This project was funded by the US Department of Energy Office of Electricity.

Featured Publications

Eto, Joseph H, Neeraj Nayak, Simon Mo, Ken Martin, Song Xue, Horacio Silva-Saravia, Jay Chen, Jim Follum, Nicholas Betzsold, Shuchismita Biswaz, and Tianzhixi Yin."Eastern Interconnection Situational Awareness Monitoring System (ESAMS) Demonstration Project." (2022).

Contact

Joseph Eto

Lead and PI

Collaborators

Neeraj Nayak, Electric Power Group, Lead
Jim Follum, Pacific Northwest National Laboratory, Lead
Simon Mo, Electric Power Group
Ken Martin, Electric Power Group
Song Xue, Electric Power Group
Horacio Silva-Saravia, Electric Power Group
Jay Chen, Electric Power Group
Nicholas Betzsold, Pacific Northwest National Laboratory
Shuchismita Biswas, Pacific Northwest National Laboratory
Tianzhixi Yin, Pacific Northwest National Laboratory