Graphical Ways to Visualize Operational Risk Results for Transmission System Contingencies

Abstract

The increased complexity of the transmission grid can endanger the operational security of the grid. Operational risk assessment, a stochastic tool, helps to enhance security. Contingency analysis and its impact quantification are the main constituents of operational risk assessment. In this study, different graphical methods are proposed to visualize operational risk contingency-based detailed results: heat-map and risk-based contingency chart. Through the heat-map, the system operator can determine which contingencies contribute most to the operational risk and would therefore be the most threatening contingencies for operational security of the grid. The “risk-based contingency chart” allows the system operator to analyze contingency cases from the probability and impact aspect in one chart. Both tools may be used in the control room for improved operational planning. In this study of contingency analysis and various types of network studies of severity factor quantification, the IEEE 39-Bus sample network is used in Power-Factory to analyze the contingencies behavior under different operational scenarios.

Design of a Wide-Area Power System Stabilizer to Tolerate Multiple Permanent Communication Failures

“…Generating, transmitting and distributing electricity continuously, without interruptions, with quality levels, without losses, without environmental damage and at the lowest economic cost are the main objectives of operating power systems. However, different types of contingencies and disturbances can occur and compromise the proper and desired operation of power systems [1][2][3][4].…”

Investigating Various Severity Factor Behaviors for Operational Risk Assessment

“…In this section, several technical severity factors are defined. Before quantifying the contingency impact, all severity factor definitions must meet specific criteria [63], as listed below.…”