By Giuseppe Fusco
Adaptive Voltage regulate in energy platforms, a self-contained combination of conception and novel software, bargains in-depth remedy of such adaptive keep watch over schemes. insurance strikes from power-system-modelling difficulties via illustrations of the most adaptive regulate platforms, together with self-tuning, model-reference and nonlinearities repayment to an in depth description of layout tools: Kalman filtering, parameter-identification algorithms and discrete-time controller layout are all represented. Case reviews handle purposes concerns within the implementation of adaptive voltage regulate.
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Additional info for Adaptive Voltage Control in Power Systems: Modelling, Design and Applications (Advances in Industrial Control)
B− nB − z 1 z and nB = nB + + nB − . Usually it is realistic to assume nB − = 0, except for some speciﬁc cases, such as voltage regulation at midpoint of a long transmission line , 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.
24) is absurd. 19) can be written in the form 36 3 Voltage and Current Phasor Identiﬁcation A Rk,∞ AT − Qw = Fk,∞ Rk,∞ which shows that the eigenvalues of Fk,∞ Rk,∞ diﬀer from those of Rk,∞ due to Qw , and the eigenvectors of Fk,∞ Rk,∞ are the rotation of the eigenvectors of Rk,∞ by A. 1, the sequence of matrices Gm , deﬁned as m Gm = Fk+i,∞ i=1 tends to zero as m → ∞. 25) enables to evaluate the minimum “time distance” m Tkf , allowing one to neglect, with assigned accuracy, the correlation between two diﬀerent estimates of the Kalman ﬁlter.
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. Staring from this consideration, the pole-shifting technique can be usefully applied in the voltage regulation problem to vary the locations of the desired closed-loop poles, represented by the roots of polynomial T (ρ, z −1 ), in such a way that the limits imposed by the actuator are taken into account in the design of the control input .
Adaptive Voltage Control in Power Systems: Modelling, Design and Applications (Advances in Industrial Control) by Giuseppe Fusco