New PDF release: Adaptive Voltage Control in Power Systems - Modeling, Design

By Giuseppe Fusco

ISBN-10: 1846285658

ISBN-13: 9781846285653

Power caliber is a urgent obstacle in electrical energy platforms. one of many major standards of energy caliber administration is the warrantly of a sinusoidal voltage waveform with sufficient amplitude at every one node of the community. The fulfilment of one of these keep watch over target is facilitated via adaptive platforms that can account for unpredictable fluctuations in working conditions.

Adaptive Voltage keep watch over in strength Systems, a self-contained mixture of thought and novel software, is an in-depth remedy of such adaptive keep watch over schemes. The reader strikes from power-system-modelling difficulties via illustrations of the most adaptive keep an eye on structures (self-tuning, model-reference and nonlinearities repayment) to a close description of layout tools: Kalman filtering, parameter-identification algorithms and discrete-time controller layout are all represented. Case reports handle functions matters within the implementation of adaptive voltage control.

Practicing engineers and researchers in strength structures and keep an eye on engineering will locate this monograph, written through representatives of every box, to be a helpful synthesis of either whereas its obtainable variety also will entice graduate students.

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Extra resources for Adaptive Voltage Control in Power Systems - Modeling, Design and Applications

Example text

9. 18) where ν(tc,k ) is an uncorrelated zero mean random sequence with variance σ02 . 10: A(z −1 ) v1 (tc,k ) = z −d B(z −1 ) u(tc,k ) + A(z −1 ) D δ(tc,k ) + ν(tc,k ) Ad (z −1 ) D δ(tc,k ) A(z −1 ) Ad (z −1 ) u(tc,k ) z −d B(z −1) + A−1 (z −1) v1 (tc,k ) ν(tc,k ) Fig. 10. 19) 3 Voltage and Current Phasor Identification The first task faced in voltage control design is to identify voltage and current phasor components at various frequencies. The problem is essentially to evaluate the coefficients of the Fourier series of a periodic time signal, assuming its periodicity is known.

Other approaches are available to select the variable forgetting factor as well as other techniques such as the constant trace algorithm and directional forgetting factor can be utilized to prevent estimator wind-up [77,83,126,127]. 2 Pole-assignment Design The design of the voltage regulator is developed by resorting to the poleassignment technique [8–11,31,127]. With the application of such a technique the poles of the closed-loop transfer function are located in any desired locations, defined by the roots of polynomial T (z −1 ) = 1 + τ1 z −1 + .

15). 24) being γ a positive constant gain. 23). 21) in symbolic form to obtain the closed-form expression of fi (ρ), gj (ρ) and h0 (ρ). In particular, if B + (z −1 ) = 1 then ∂fv,i /∂ρ = ∂ fi /∂ρ, otherwise ∂fv,i /∂ρ are obtained by differentiating with respect to ρ the coefficients of the convoluted polynomial B + (z −1 ) F (ρ, z −1 ). 16), to make uv (tc,k ) < 0. That is uv (tc,k ) must decrease. The poleshifting factor ρ has to vary to pursue this objective. 25) that, whatever the sign of ∂uv (tc,k )/∂ρ, decreasing uv (tc,k ) is ensured by choosing γsat > 0.

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Adaptive Voltage Control in Power Systems - Modeling, Design and Applications by Giuseppe Fusco


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