Semi-physical piecewise affine representation for governors in hydropower system generation

Donaisky, Emerson; Oliveira, Gustavo H. C.; Santos, Eduardo Alves Portela; Leandro, Gideon Villar; Peña, A.; Souza, João Artur de

doi:10.1016/j.epsr.2016.02.022

Cited by 8 publications

(3 citation statements)

References 35 publications

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“…In the Dynamic Systems and Control Group of the Federal University of Paraná, some works in the area have already been developed. Aurelien [29] presented, a comparative analysis based on frequency control in hydroelectric plants using PID and infinite H controllers [29].Donaisky et al [30] presented a proposal for a hybrid model of the type PWA (Piecewise Affine) for the hydraulic network of UHEs. In addition, the author proposed to combine this model with a Load and Frequency controller forming a hybrid MPC (Model Predictive Controller).…”

Section: Literature Reviewmentioning

confidence: 99%

“…In addition, the author proposed to combine this model with a Load and Frequency controller forming a hybrid MPC (Model Predictive Controller). Results were applied in a case study based on a Brazilian hydroelectric power plant, where the MPC controller must perform better than the traditional PID [30]. The genetic algorithm allows a wide search for values of the parameters of the controller, this in general obtains controllers with good performance.…”

Section: Literature Reviewmentioning

confidence: 99%

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Load Frequency Control of Distributed Generation using GA Optimized PID Controller

Motiram¹

2020

IJATCSE

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The dynamic behaviour of the frequency in Electrical Power Systems (EPSs) s directly related to the balance between the mechanical power and the electrical power of each generator system. In the operation of EPSs, a nominal value is established as a reference for the balance of powers, the load changes (electrical power) are reflected in the level of the frequency, which makes it necessary to modify the mechanical power to restore the equilibrium. When faced with small changes in load, it is generally possible to modify the mechanical power without having appreciable deviations from the frequency; this is not possible in the case of significant generation losses, so frequency control is carried out through changes in electric power. This paper presents an approach of load frequency control of distributed generation system using a proportionalintegral-derivative (PID) controller optimized by a stochastic optimization method known as Genetic Algorithm.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Load Frequency Control of Distributed Generation using GA Optimized PID Controller

Motiram¹

2020

IJATCSE

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“…The multi-unit hydroelectric generating system (MUHGS) plays a vital role in the power generation, and thus it is operating stability becomes more important for a hydropower station [10,11]. The MUHGS belongs to a non-linear hydraulic-mechanical-electrical structure, which contains some key components such as synchronous generators, hydraulic turbines, controllers, penstocks and surge tanks [10][11][12][13][14]. In the actual operations, the MUHGS could run in two transient situations, that is, small disturbances and large disturbances.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of parametric effect on transient stability of a multi‐unit hydroelectric generating system

Yang

Chen

2021

IET Renewable Power Gen

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Transient stability of a multi‐unit hydroelectric generating system significantly influences the safety operation of power stations. The uncertainty of operating parameter is one of the important factors to influence the system stability during the transient process. For this reason, the target of this paper aims to explore the optimised operating parameter in order to enhance the stability of a multi‐unit hydroelectric generating system. To overcome the limitations of existing methods in literature, a new high‐dimensional, complex and non‐linear dynamic model of the multi‐unit hydroelectric generating system that combines the conventional hydro‐turbine governing system and the shaft system is established. Then, the dynamic behaviour of the proposed system targeting the transient process is exhaustingly investigated with the change of the critical parameters. The calm interval of critical parameters is also determined in order to improve the transient stability of the system. The obtained results not only enrich the theoretical knowledge of transient dynamics but also ensure the safety operation of hydropower stations. Meanwhile, the presented research method, high‐dimensional non‐linear dynamic model and the interesting findings in transient process can promote the development of the theory of non‐linear dynamics.

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Electrical endurance design of multi-operation isolators using semi-physical simulation via algebraic multigrid iteration

Huang

Chen

et al. 2023

Electr Eng

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Semi-physical piecewise affine representation for governors in hydropower system generation

Cited by 8 publications

References 35 publications

Load Frequency Control of Distributed Generation using GA Optimized PID Controller

Load Frequency Control of Distributed Generation using GA Optimized PID Controller

Evaluation of parametric effect on transient stability of a multi‐unit hydroelectric generating system

Electrical endurance design of multi-operation isolators using semi-physical simulation via algebraic multigrid iteration

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