Battelle Memorial Institute

North Carolina State University

Mallikarjuna Vallem

Nader A Samaan

Bharat Vyakaranam

Marcelo A Elizondo

Ning Lu

Jeffery E Dagle

Jesse T Holzer

Yuri Makarov

Yousu Chen

Renke Huang

Xiangqi Zhu

Xinya Li

Qiuhua Huang

George Chin, Jr

Pavel V Etingov

Blaine J McGary

Kirsten L Pierce

Dimitri V Zarzhitsky

David Mulcahy

Catherine McEntee

Xinda Ke

Catherine Mcentee

The present disclosure describes systems and techniques that enhance effectiveness and efficiency of a contingency analysis tool that is used for studying the magnitude and likelihood of extreme contingencies and potential cascading events across a power system. The described systems and techniques include deploying the contingency analysis tool in a high-performance computing (HPC) environment and incorporating visual situational awareness approaches to allow power system engineers to quickly and efficiently evaluate multiple power system simulation models. Furthermore, the described systems and techniques include the power system contingency-analysis tool calculating and coordinating protection element settings, as well as assessing controls of the power system using small-signal nomograms, allowing power system engineers to more effectively comprehend, evaluate, and analyze causes and effects of cascading events against a topology of a power system.

Enhanced dynamic contingency analysis for power systems

Systems and methods are described for coordinating volt-var control between sub-transmission and distribution systems. Distributed energy resources of a distribution system are aggregated into virtual power plants from which reactive power can optimally be dispatched to the sub-transmission system. A sub-transmission controller executes a volt-var AC optimal power flow optimisation function to minimize voltage fluctuations that might otherwise occur when coordinating with a distribution system having distributed energy resources. The distribution system can use a sensitivity matrix for regulating voltage at distribution feeders while fulfilling a transmission or sub-transmission system's demand requests.

Coordinated voltage control and reactive power regulation between transmission and distribution systems

Growing community of inventors

Richland, WA, United States of America

Mallikarjuna Vallem