By Giuseppe Fusco

ISBN-10: 1846285658

ISBN-13: 9781846285653

Power caliber is a urgent predicament in electrical strength structures. one of many major specifications of energy caliber administration is the warrantly of a sinusoidal voltage waveform with sufficient amplitude at each one node of the community. The fulfilment of this sort of keep an eye on target is facilitated through adaptive structures that may account for unpredictable fluctuations in working conditions.

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

Practicing engineers and researchers in strength structures and keep watch over engineering will locate this monograph, written by means of representatives of every box, to be a worthwhile synthesis of either whereas its obtainable sort also will attract graduate students.

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

Example text

Usually it is realistic to assume nB − = 0, except for some specific cases, such as voltage regulation at midpoint of a long transmission line [97], which yield to a nonminimum phase model (nB − = 0). 14) approximates the relationship between u(tc,k ) and v1 (tc,k ) at the controlled node. 9. In some cases, further improvement of the accuracy of the time domain model can be obtained by including also a white noise term, which takes into account the noise due to measurement devices and to commutations in the power electronic apparatus.

The proof is induced starting from k = 1. 11) for k = 1 it is trivial that R1 is symmetric and positive definite. 14) hT 1 R1 h1 + Q. ,1 which directly shows that R1 is symmetric. 14) it can easily be shown that aT R1 a > 0 ∀ a ∈ IR2nh and a = 0 by applying the Schwartz inequality to the positive definite matrix R1 hT 1 R1 h1 aT R1 a ≥ hT 1 R1 a 2 It is interesting to analyze some further conditions to be imposed which assure that, asymptotically, the error covariance matrix Rk is not only stable but also reaches a constant value.

With the application of this algorithm, the closed-loop pole positions are selected so that they are radially in line with the position of the poles of the estimated plant and are closer to the center of the unit circle in the z-plane by a fraction ρ, where ρ is the pole-shifting factor. Conversely, in power system voltage regulation, the system undergoes small disturbances. Such disturbances change the poles of the power system model but such variations are not large because the power system is operating under normal conditions.

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


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