Download PDF by Giuseppe Fusco: Adaptive Voltage Control in Power Systems: Modelling, Design

By Giuseppe Fusco

Adaptive Voltage keep watch over in energy platforms, a self-contained mixture of conception and novel program, bargains in-depth remedy of such adaptive keep an eye on schemes. insurance strikes from power-system-modelling difficulties via illustrations of the most adaptive keep watch over platforms, together with 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 experiences handle functions matters within the implementation of adaptive voltage regulate.

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Extra resources for Adaptive Voltage Control in Power Systems: Modelling, Design and Applications (Advances in Industrial Control)

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B+ nB + z 1 z −1 −nB − B − (z −1 ) = b0 + b− + . . + 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 [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.

However, since saturation has been neglected in the control design, the integrator of the regulator may suffer from wind-up. This causes low-frequency oscillations and leads to instability. The wind-up is due to the controller states becoming inconsistent with the saturated control signal, and future correction is ignored until the actuator desaturates. 7 has been implemented [17]. Fig. 7. Voltage regulator scheme avoiding wind-up The first simulation presented aims to show the performance of the nodal voltage regulator scheme designed according to the pole-shifting technique.

6. HSF topology design; see, for example, [22]. Such a system modeling approach is necessary to design frequency/active power control. In fact, frequency is a system variable; that is, it represents the unique value of the frequency in the whole system. Consequently, all the local frequency/active power regulators of the synchronous generators connected to the system cooperate to control the system frequency thus interacting through the load-flow equations. On the other hand, when considering the voltage/reactive power control problem, the effect of local nodal voltage controller actions on local variables and their interaction through the power-flow balance equations is often weak enough to be neglected.

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