Battelle Memorial Institute

George Chin, Jr

Jeffery E Dagle

Bharat Vyakaranam

Khushbu Agarwal

Yousu Chen

Sutanay Choudhury

Marcelo A Elizondo

Xinya Li

Nader A Samaan

Mallikarjuna Vallem

Qiuhua Huang

Sherman J Beus

Pavel V Etingov

Blaine J McGary

Kirsten L Pierce

Dimitri V Zarzhitsky

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

A query graph, which includes vertices and edges, represents a query on graph-structured data. The query graph is decomposed into query subgraphs. A network analysis tool performs continuous subgraph matching queries to facilitate analysis of computer network traffic, social media events, or other streams of data represented as a dynamic data graph (graph-structured data). This can help identify emerging trends in the data. Some features of the network analysis tool enhance performance by effectively utilizing distributed computing resources (including processing cores and memory at different nodes of a cluster) to speed up the process of updating the dynamic data graph and detecting matches of query subgraphs. Features of a query graph building tool enhance usability by providing intuitive ways to specify query graphs and their subgraphs. Features of a results visualization tool enhance usability by providing an intuitive way to present the results of continuous subgraph matching queries.

Performance and usability enhancements for continuous subgraph matching queries on graph-structured data

Growing community of inventors

Richland, WA, United States of America

George Chin, Jr