Corrective Transmission Switching for N-1-1 Contingency Analysis

Day-Ahead Scheduling of Power System With Short-Circuit Current Constraints Considering Transmission Switching and Wind Generation

“…Transmission switching is carried out to optimize system operation and reduce the SCC level of power grid by changing the network topology, which works well without adding extra electrical equipment and consequently achieving significant savings [3]. However, transmission switching may weaken the system security and the N-1 security may not be ensured when a large number of transmission lines are switched off [4]. Specifically, the startup and shutdown of generators could affect the SCC level.…”

Unlocking reserves with smart transmission switching

“…Thus, by switching off one or more specific transmission lines, loops can be removed and, hence, system operation becomes less constrained. In the past decade, TS has been widely studied in the technical literature and shown to potentially reduce operational costs and enhance system reliability [1][2][3][4][5][6][7][8][9][10][11][12][13].…”

“…Relevant works [1][2][3][4]7,9] consider TS actions exclusively in the normal state or base case, i.e., before uncertainty unfolds. However, recent works have pointed towards the relevance of corrective or postcontingency TS, conducted in real time after uncertainty unfolds [5,6,8,[10][11][12][13]. In [5,8,[10][11][12][13], the benefits of post-contingency TS were examined within the context of real-time contingency analysis by employing sequential approaches wherein corrective TS is conducted after generation scheduling.…”

“…However, recent works have pointed towards the relevance of corrective or postcontingency TS, conducted in real time after uncertainty unfolds [5,6,8,[10][11][12][13]. In [5,8,[10][11][12][13], the benefits of post-contingency TS were examined within the context of real-time contingency analysis by employing sequential approaches wherein corrective TS is conducted after generation scheduling. As a consequence, corrective TS is not co-optimized with energy or reserves.…”

Multi-period vulnerability analysis of power grids under multiple outages: An AC-based bilevel optimization approach

“…Within this constraint, the system should normally continue to work after any single failure [9]. Analyzing the loss of two elements consecutively or N-1-1 contingency analysis is another example of this category [10][11][12]. It should be noted that the reliability concept that defines the ability of the electric power system to meet the demand with continuity and an acceptable level of quality, comes under the low-order contingencies [13].…”