Optimal location of voltage sags monitors by determining the vulnerable area of network buses

Optimal placement of STATCOM using a reduced computational burden by minimum number of monitoring units based on area of vulnerability

“…To calculate SARFI, the voltage of every single bus must be monitored, but it is not cost-efficient since a huge number of measurement instruments are required. Today, much research is done on the optimal placement of measuring and monitoring equipment [8][9][10][11]. An alternative cost-effective approach is approximating the voltage of buses based on a limited number of monitored buses.…”

“…Although this article provides a simple approach to achieve the goals; the proposed method does not differentiate between various types of faults and the same result will be given for different faults. In [11],…”

“…In [10], while all fault types can be applied, the accuracy has been slightly reduced. Critical distance and fault position methods (FPM) have been used to determine the vulnerable area in [11][12][13][14][15], but they have some deficiencies in ring networks. Moreover, while the FPM has a good performance in both ring and radial networks, but since large networks require a large number of points to use this method, to determine the exact area of vulnerability (AOV), it is not a proper approach.…”

“…Although this article provides a simple approach to achieve the goals; the proposed method does not differentiate between various types of faults and the same result will be given for different faults. In [11], The author determines the monitoring buses by determining the vulnerable areas of network buses in different faults. In this work, although the speed of determining the monitor buses is high, but it is not very accurate.…”