Sensitivity Methods in the Dispatch and Siting of FACTS Controllers

A novel approach based on reliability sensitivity analysis to allocate protective devices

“…Its removal or malfunction effect is about 100 times less than that of the most important one. The placement of devices in accordance with the obtained results can be classified into 2 sets: the main sections (10,21,27) and the beginning of the lateral branches (2,7,13). The value of the SAIFI variation demonstrates that the removal of devices located in the main sections decreases the system reliability less than the removal of devices located in the beginning of the lateral branches.…”

“…Sensitivity analysis is a useful method to evaluate the system robustness against the uncertainties of model or design parameters. Sensitivity analysis has been examined in different studies in power engineering, as follows: siting the flexible AC transfer systems [25,27,28], stability impact of DGs [29], transient stability [28,30], etc. However, it has not been attempted to determine more effective strategies to improve the distribution system reliability so far.…”

Analysis of Unified Power Flow Controller Steady-State Power Flow Regulation Capability and Its Key Factors

“…Furthermore, the relationship between the capacity of the UPFC series converter and the regulation requirement of line overload control is presented in [14]. Besides, in [15], the voltage and power flow sensitivities with respect to voltage source converter-based FACTS controllers are studied in a large system, and two approaches are proposed for the sensitivity analysis. Considering that in some cases (such as studying the system transmission usage and power transfer capability), we are mainly concerned with the line active power flow, a DC-based injection model of the UPFC-embedded line is developed in [16], and the impact of the UPFC on bus voltage angles and line active power flows is studied using the proposed model [17].…”