By Giuseppe Fusco
Power caliber is a urgent problem in electrical strength structures. one of many major necessities of energy caliber administration is the warrantly of a sinusoidal voltage waveform with enough amplitude at each one node of the community. The fulfilment of this kind of keep an eye on target is facilitated through adaptive structures which may account for unpredictable fluctuations in working conditions.
Adaptive Voltage keep an eye on in strength Systems, a self-contained combination of idea and novel program, is an in-depth remedy of such adaptive keep an eye on schemes. The reader strikes from power-system-modelling difficulties via illustrations of the most adaptive keep an eye on platforms (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 experiences handle purposes 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 beneficial synthesis of either whereas its obtainable type also will attract graduate students.
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Additional resources for Adaptive Voltage Control in Power Systems - Modeling, Design and Applications
13) The parameters to be identiﬁed are the no-load voltage phasor v¯0,h = v0,h,r + j v0,h,i and the network equivalent impedance ¯zeq,h = req,h + j xeq,h . 13) vh = 2 + v2 vh,r h,i Thevenin equivalent circuit req,h+jxeq,h v 0,h ih (t) v h (t) Actuator u(t) Fig. 7. System frequency model using the Thevenin equivalent circuit Many methods have been proposed to identify req,h and xeq,h at fundamental and harmonic frequencies, using voltage and current data obtained by ﬁeld measurements or detailed numerical simulations.
3 Convergence and Stability Properties First of all, it is necessary to derive the conditions that guarantee stable asymptotic behavior of error covariance matrix Rk , that is an upper-bounded sequence of Rk . 1. The sequence Rk is upper-bounded if and only if any set of 2nh subsequent vectors hk+1 , . . hk+2nh represents an independent set in IR2nh . Proof. 2) it is apparent that all the system states are not asymptotically stable, to assure that the sequence Rk is upper-bounded and has stable asymptotic behavior it is necessary and suﬃcient that all the states are observable .
The inner loop consists of the system and a linear feedback regulator. The outer loop is composed of a parameter estimator and a design calculation. 1, is also convenient from the implementation point of view, because the parameter estimator and the regulator parameters calculation are often conveniently time shared between several loops. Self-tuning regulators are divided into two classes: those based on indirect methods, often named explicit self-tuning regulators, and those based on direct methods, often named implicit self-tuning regulators [9, 10].
Adaptive Voltage Control in Power Systems - Modeling, Design and Applications by Giuseppe Fusco