Optimal Placement of FACTS Controllers for Congestion Management in the Deregulated Power System

Abstract

This paper proposes a methodology to determine the optimal location of Flexible AC Transmission System (FACTS) controllers for Congestion Management (CM) in the restructured electrical power system. An approach to find the optimum placement of Thyristor Controlled Phase Angle Regulators (TCPAR) and Thyristor Controlled Series Compensators (TCSC) has been proposed in this paper. The proposed methodology is based on the sensitivity of transmission loss which a controller is installed. The total system losses and the power flows are considered as the performance indices. The traditional optimal power flow (OPF) problem is modified to include the market players, who will compete and trade simultaneously, ensuring the system operation stays within the security limits. In this paper, pool and bilateral contracts are considered. Here, an integrated methodology is proposed that includes the FACTS Controllers in a bilateral contract framework to maintain the system security and to minimize the deviations from the contractual requirements. The simulation results on IEEE 30 bus system show that the sensitivity factors could be used effectively for the optimal location of FACTS controllers in response to the required objectives.

Power System Reliability Assessment in a Complex Restructured Power System

“…Both load point and system indices can be used to measure composite system adequacy. Load point indices indicate the reliability at the individual load buses while system indices provide an overall evaluation of total system reliability and reliability worth [15,16]. The two sets of indices in the generation units and the load point have different functions but complement each other.…”

Optimal location and sizing of DG and D-STATCOM in distribution networks

“…The objective of optimal placement and sizing of DG and D-STATCOM in RDS is to minimize the total real power losses in the system while satisfying several equality and inequality constraints [29]. Mathematically, the objective function (J) is expressed as [30] The above objective function is solved subjected to the following equality and inequality constraints.…”

Transient stability enhancement using thyristor controlled series compensator

“…Specifically, these studies provide the changes in voltages, currents, powers, speeds, and torques of machines of power system, as well as the changes in system voltages and power flows, during and immediately following a disturbance. Transient stability analysis is performed by combining the solution of algebraic equations describing the network with numerical solution of differential Equations [16]. The solution of the network equations retains the identity of the system, and thereby provides access to system voltages and currents during the transient period.…”