Transient Stability Assessment of Two-Area Power System with LQR based CSC-STATCOM

Abstract

Original scientific paper A current source converter (CSC) based static synchronous compensator (STATCOM) is a shunt flexible AC transmission system (FACTS) device, which has a vital role as a stability support for small and large transient instability in an interconnected power network. A robust linear quadratic regulator (LQR) based controller for CSC-STATCOM is proposed. In this paper, LQR based CSC-STATCOM is designed to enhance the transient stability of two-area two-machine power system. First of all, modeling & LQR based controller design for CSC-STATCOM are described. After that, the impact of the proposed scheme on the test system with different disturbances is demonstrated. The feasibility of the proposed scheme is demonstrated through simulation in MATLAB and the simulation results show an improvement in the transient stability of power system with CSC-STATCOM. Also, the robustness and effectiveness of CSC-STATCOM are better rather than other shunt FACTS devices (SVC & VSC-STATCOM) in this paper.

Transient Stability Enhancement of Multimachine Power System Using Robust and Novel Controller Based CSC-STATCOM

“…The pole-shifting technique is one of the basic control methods which are employed in feedback control system theory. Theoretically pole-shifting technique is to set the preferred pole position and to move the pole position of the system to that preferred pole position, to get the desired system outcomes [26]. Here poles of system are shifted because the position of the poles related directly to the eigenvalues of the system, which control the dynamic characteristics of the system outcomes.…”

Reactive Power Control using STATCOM for Power System Voltage Improvement

“…Adding a new transmission line is very complex and depends on too many factors so the new researches focused on inserting new devices to the transmission lines to increase the capability of the transmitted power and make the transmission line more flexible instead of installing a new transmission line. Flexible Alternating Current Transmission System (FACTS) is a power system supported with new devices to make the system more flexible by controlling all variables of the system such as voltage, current, impedance and phase angle [2].…”