Static Reactive Power Compensator Design, Based on Three-Phase Voltage Converter

Abstract

At present, electrical network stability is of the utmost importance because of the increase in electric demand and the integration of distributed generation deriving from renewable energy. In this paper, we proposed a static reactive power compensator model with common direct current voltage sources. Converter parameters were calculated and designed to fulfill specifications. In order to ascertain the device response for different operating modes as reactive power consumer and generator, we developed the model’s power and control circuits in Matlab Simulink. Simulations were performed for different conditions, and as a result, the current and voltage waveforms and the circular power chart were obtained. This paper has theoretically proven it is possible to achieve the consumption or generation of purely active or reactive power by implementing a static reactive power compensator with common DC voltage sources.

Power Grid Dynamic Performance Enhancement via STATCOM Data-Driven Control

“…where plant P(σ)w = 0 and controller C(σ)w = 0 laws must be simultaneously satisfied by w. This means that, by selecting a suitable controller, we are able to restrict the trajectories of the system to those that are asymptotically stable and discard those that are undesirable, for example, unstable, highly oscillatory, too slow, and so forth. The design of controller C(σ) can impose the stability on (5). For this, it must be guaranteed that, having a partition w = col(u, y), the stability conditions recalled in Section 2.3 for a Lyapunov function candidate Q Ψ , hold for all w satisfying (5).…”

“…The design of controller C(σ) can impose the stability on (5). For this, it must be guaranteed that, having a partition w = col(u, y), the stability conditions recalled in Section 2.3 for a Lyapunov function candidate Q Ψ , hold for all w satisfying (5). Notice that, if the coefficient matrix satisfies Ψ > 0, then Q Ψ ≥ 0 prevails.…”

“…Notice that, if the coefficient matrix satisfies Ψ > 0, then Q Ψ ≥ 0 prevails. Then it is still necessary to guarantee that ∇Q Ψ < 0 ∀w satisfying (5). For this, the description of the closed-loop system can be introduced in the inequality, by considering a polynomial matrix V(σ), which is non zero, and has the same dimensions as R(σ) in (5).…”

“…Then it is still necessary to guarantee that ∇Q Ψ < 0 ∀w satisfying (5). For this, the description of the closed-loop system can be introduced in the inequality, by considering a polynomial matrix V(σ), which is non zero, and has the same dimensions as R(σ) in (5). In this form, the symmetry necessary to satisfy the inequality is preserved, that is,…”

“…In this context, flexible AC transmission system (FACTS) devices have been developed not only to offer a fast dynamic response of reactive power compensation but also to prevent the occurrence of synchronous resonance in large power systems [2,3]. In the literature, it has been reported that static synchronous compensator (STATCOM) presents promising results in dynamic reactive power compensation, voltage regulation and also helping to reduce power fluctuations [4,5].…”