Contingency visualization for real-time decision support in grid operation

Abstract

Contingency analysis is a key function in control centers to assess the impact of various combinations of power system component failures based on state estimates. Today's practice analyzes only a limited set of contingency cases and lacks of capabilities in presenting the results in a way that is easy to be understood by grid operators in a short time frame of seconds to minutes. This limits the ability to operate the power grid for better reliability and efficiency. Faster analysis of more cases is required to safely and reliably operate today's power grids which have a less margin and more intermittent renewable energy sources. This paper explores the advancements in high performance computing and visual analytics for improving the computational speed and the information representation in contingency analysis. A framework of advanced contingency analysis is proposed. Case studies using the Western Electricity Coordinating Council (WECC) system are presented to demonstrate the feasibility of the proposed framework. Comparative assessment by real power grid operators has been performed as part of a WECC operator training class. The assessment results demonstrate the validity of the proposed contingency analysis and visualization approach.

Visualization of Multi-Fidelity Approximations of Stochastic Economic Dispatch

“…While it is out of scope to provide a thorough survey of visualizations designed for grid operations, it is notable to mention visualization is an accepted approach for understanding the various aspects of the grid and has been in use for many years. Visualization tasks range from general analyses of power flow and voltages [13,15,17,27], to monitoring operational status and sources of failures [9,11,16], and smart grid operations using sensor networks [8,12,26], among others. We look to these works for inspiration, and also leverage the spatio-temporal aspects of our data to design our visualization dashboard.…”