Estimation of voltage stability index for power system employing artificial neural network technique and TCSC placement

A Fast Contingency Management Approach with Optimal Placement and Tuning of Interline Power Flow Controller Using Differential Evolution Algorithm

“…(10) and (11): (11) where lk is the number of transmission lines, V i = V i ∠ θ i and V n = V n ∠θ n are the voltages at end buses i and n (n = j, k), V sein = V sein ∠ θ sein (n = j, k) is the series injected voltage source of the nth line, se stands for series, and G in and B in are the transfer conductance and susceptances between bus i and n (n = j, k), respectively.…”

“…Flexible AC transmission system (FACTS) devices are chosen in the modern power systems based on the requirement to solve various problems. Several authors have successfully utilized FACTS devices for prevention of blackouts [10][11][12][13][14][15][16]. Moazzami et al [17] have presented a new approach for blackout prevention in a power system using parallel FACTS devices along with application of some corrective actions.…”

A Novel Line Stability Index for Voltage Stability Analysis and Contingency Ranking in Power System Using Fuzzy Based Load Flow

“…An iterative and sequential technique was presented, to determine the different routes being used for active power flow transmission to the weakest load bus, to identify the most loaded transmission path, and redirect the power flow to other routes which are less loaded for voltage security reinforcement [21]. A feed forward back propagation network has been proposed to identify the weakest lines and information about the rank of lines with respect to the stability index (Lmn) [22]. In this technique, the maximum loadability of reactive power at all the buses in network is determined for identifying the weak bus or most critical line of the system.…”

Assess the Modeling Effects of PSS and Governor on Voltage Stability of Power System

“…Due to open market of electricity, economic reasons and environmental constraints the modern power systems are utilized closer to their stability limits and the voltage stability problem has become a major challenge in the utilization of power systems. Hence, the on-line voltage instability assessment has a pivotal contribution in protecting and management of power systems [1,2]. The voltage stability is described capability of a power system to preserve both transferred power and voltage controllable during different contingencies.…”