Passivity-Based Control of Power Systems Considering Hydro-Turbine With Surge Tank

Gil-González, Walter; Fosso, Olav Bjarte; Escobar-Mejía, Andrés

doi:10.1109/tpwrs.2019.2948360

Cited by 32 publications

(15 citation statements)

References 39 publications

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“…where positive constants k D1 and k D4 are feedback gains, and both ζ 1 are ζ 2 are the auxiliary state variables to be designed. Substitute control law (19) to Equation (17), and it can be seen that the time derivative of E N is given by .…”

Section: Passivity-based Control Designmentioning

confidence: 99%

“…The classical CbI has been applied to the frequency stabilization of multimachine power system [12], the motion control of induction motors [13], and the temperature control of heat exchanger networks [14], whose popularity comes from its simplicity. The IDA-PBC method is applied for designing the state-feedback control laws for induction motors [15], hydroturbine systems [16], multimachine power systems considering hydroturbine with surge tank [17], a fuel cell/super-capacitor hybrid system [18], brushless DC motor [19], and electric vehicles (EVs) [20]. The popularity of the IDA-PBC method is given by its capability of injecting extra damping, and usually proper state observers are necessary for realizing practically implementable dynamic output feedback control strategies.…”

Section: Introductionmentioning

confidence: 99%

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Passivity-Based Power-Level Control of Nuclear Reactors

et al. 2022

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Nonlinear power-level control of nuclear reactors can guarantee wide-range closed-loop stability that is positive for plant load-following capability. Nuclear reactor power dynamics are the tight interconnection of both neutron kinetics and thermal hydraulics, which determines that the corresponding control design model is a complex nonlinear system with large uncertainty. Although nuclear reactor dynamics are complex, it is meaningful to develop simple but effective power-level control methods for easy practical implementation and commissioning. In this paper, a passivity-based control (PBC) is proposed for nuclear reactor power-level dynamics, which has a simple form and relies on the measurement of both neutron flux and average primary coolant temperature. By constructing the Lyapunov function based on the shifted ectropies of neutron kinetics and reactor core thermal hydraulics, the sufficient condition for globally asymptotic closed-loop stability is further given. Finally, this PBC is applied to the power-level control of a nuclear heating reactor, and simulation results show the feasibility and satisfactory performance.

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Section: Passivity-based Control Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Passivity-Based Power-Level Control of Nuclear Reactors

et al. 2022

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“…Fig. 2 illustrates the nonlinear turbine model described from (1) to (3). The hydraulic servo model can be described by…”

Section: A Hydraulic Turbinementioning

confidence: 99%

“…I, which allows high efficiency due to the opportunity of variable speed operation. This system has a strong coupling between mechanical, hydraulic, and electrical dynamics which makes the system difficult to analyze [1], [2]. Moreover, it presents many different operating points, which also complicate the analysis [3].…”

Section: Introductionmentioning

confidence: 99%

Passivity-Based Control for Small Hydro-Power Generation With PMSG and VSC

2020

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This paper presents a passivity-based control method for a small hydro-power system that consists of a permanent magnet synchronous generator (PSMG) connected to the grid through a back-toback converter. Nonlinear models of the hydraulic, mechanical, and electrical parts of the small hydro-power system are considered. Two approaches in the realm of passivity-based control are implemented, namely, standard passivity-based control and PI-passive. These controls consider the intrinsic characteristics of the model, which has a port-Hamiltonian (pH) structure with a small hydro-power system in open-loop. The purpose is to design a control law with passive output which ensures asymptotic stability for closed-loop operation in the sense of Lyapunov's theory. The paper is practically oriented, and hence, the proposed controllers are tested and compared with a conventional approach, in a 13.2 kV distribution feeder. The proposed controllers have been assessed and compared with a classical PI controller considering steady state and transient behaviors in small hydro-power plants (SHPs). Simulation results show that the proposed methodology guarantees stability and offers better dynamical performance. INDEX TERMS Small hydro-power, permanent magnet synchronous generation (PMSG), energy conversion power systems, passivity, back-to-back converter.

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“…Following this trend, in [10] a PID controller that allows one to maximize power generation was developed. Then, in [11], an application for a controller based on passivity was presented.…”

Section: Introductionmentioning

confidence: 99%

Inverse Optimal Control Using Metaheuristics of Hydropower Plant Model via Forecasting Based on the Feature Engineering

et al. 2021

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Optimal operation of hydropower plants (HP) is a crucial task for the control of several variables involved in the power generation process, including hydraulic level and power generation rate. In general, there are three main problems that an optimal operation approach must address: (i) maintaining a hydraulic head level which satisfies the energy demand at a given time, (ii) regulating operation to match with certain established conditions, even in the presence of system’s parametric variations, and (iii) managing external disturbances at the system’s input. To address these problems, in this paper we propose an approach for optimal hydraulic level tracking based on an Inverse Optimal Controller (IOC), devised with the purpose of regulating power generation rates on a specific HP infrastructure. The Closed–Loop System (CLS) has been simulated using data collected from the HP through a whole year of operation as a tracking reference. Furthermore, to combat parametric variations, an accumulative action is incorporated into the control scheme. In addition, a Recurrent Neural Network (RNN) based on Feature Engineering (FE) techniques has been implemented to aid the system in the prediction and management of external perturbations. Besides, a landslide is simulated, causing the system’s response to show a deviation in reference tracking, which is corrected through the control action. Afterward, the RNN is including of the aforementioned system, where the trajectories tracking deviation is not perceptible, at the hand of, a better response with respect to use a single scheme. The results show the robustness of the proposed control scheme despite climatic variations and landslides in the reservoir operation process. This proposed combined scheme shows good performance in presence of parametric variations and external perturbations.

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Passivity-Based Control of Power Systems Considering Hydro-Turbine With Surge Tank

Cited by 32 publications

References 39 publications

Passivity-Based Power-Level Control of Nuclear Reactors

Passivity-Based Power-Level Control of Nuclear Reactors

Passivity-Based Control for Small Hydro-Power Generation With PMSG and VSC

Inverse Optimal Control Using Metaheuristics of Hydropower Plant Model via Forecasting Based on the Feature Engineering

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