An approach for coordinated automatic voltage regulator–power system stabiliser design in large-scale interconnected power systems considering wind power penetration

Abstract

A new comprehensive criterion for the coordinated automatic voltage regulator-power system stabiliser (AVR-PSS) design in large-scale power systems is proposed. Then, a control strategy is introduced to make a trade-off between voltage regulation and small signal stability. The proposed control strategy combines switching technique and negative feedback to achieve a robust controller against load/generation disturbances. An adaptive angle-based switching strategy is employed instead of fixed time-based switching and hence the proposed control methodology takes into account system size and status modes to improve the system performance. The control strategy is completely independent of the test case and fault type. Efficiency of the proposed method has been verified on several large-scale systems and is illustrated here on the New York/ New England system with and without wind power penetration. The developed control strategy can be considered as a strong tool for the coordinated design of AVR, PSS and static var compensator (SVC) in the presence of wind turbines.

Coordinated Voltage Control With Online Energy Margin Constraints

“…Substituting (1), (2), and (5) into (14), we obtain (15) Generalizing (15) to an -bus system, is given by (16) The impact of tap ratio on the energy margin is discussed in [9]. This paper proposes a different approach.…”

“…This paper proposes a different approach. The potential energy given by (16) includes the variables , , , and , which is suitable for modeling of the change in stability margin as these variables change. Based on potential energy boundary surface (PEBS) [32], the energy margin during the transient period is the distance between the current energy and the potential energy boundary, i.e., (17) where and are, respectively, the stable equilibrium point and unstable equilibrium point of the post-fault system.…”

“…A wide area voltage regulation is proposed in [15], which is based on fast automatic control to increase the control effectiveness. A control strategy with adaptive angle-based switching strategy is proposed in [16] to achieve tradeoffs between voltage regulation and small signal stability. In [17], the jumping genes paradigm is proposed for coordinated power voltage control based on multi-objective optimization problem.…”

Voltage performance enhancement of DFIG-based wind farms integrated in large-scale power systems: Coordinated AVR and PSS

“…Bode frequency response with a step-by-step algorithm is addressed in [30] to create a trade-off between AVR and PSS. The proposed control strategy in the present work to coordinate AVR and PSS is based on the given ideas in [31,34,35].…”

Robust coordinated control for damping low frequency oscillations in high wind penetration power system

“…Edrah et al show that using conventional PSS inside voltage control loop of DFIG rotor‐side converter (RSD) delivers damping improvement. A robust control approach is proposed by Golpira et al to attain small signal stability and voltage regulation together. Nonlinear POD controllers are designed by Elkington and Ghandhari .…”