Selection of Lines to Be Switched to Eliminate Overloaded Lines Using a Z-Matrix Method

Comprehensive modeling of flexible transmission services in stochastic joint energy and spinning reserve market

“…Transmission switching can provide flexible control actions which result into technical benefits like Congestion management, optimal generation dispatch, loss reduction, security enhancement [1][2][3][4][5][6][7][8].…”

A study of the use of corrective switching in transmission systems

“…A list of probably more effective [23] branch switching per overloaded branch is chosen by analysis of loop currents in an oriented graph The same as above but using Z- [15] matrix analysis Only substationbranches [ 11 electrically close to the overload are considered. Small list of substation [9], [ lo], [ 111, [ 161, zonfigurationshranches switching [ 181, [22] selected by sensitivity analysis, performance indices or distribution factors.…”

“…The research effort reported in [15] aiid [23] is only concerned with methods to reduce the search space and in [2] no clear information about how the search space is reduced was found, although it is said that a large number of possible multiple switching actions are not taken into consideration. The same happens in [6] and, apparently, there is no reduction in search space in [5].…”

Fast real‐time corrective control strategy for overload relief in bulk power systems

“…The LP approach was utilised again in [3] for the purpose of alleviating overload, abnormal voltages etc. A novel tool was used in the control centre to aid the system operator when the system is in stress [4]. Bus impedance matrix and simple calculations were used to determine the overload of any particular line.…”