Field tests to validate hydro turbine-governor model structure and parameters

Hannett, L. N.; Feltes, J.W.; Fardanesh, B.

doi:10.1109/59.331426

Cited by 94 publications

(42 citation statements)

References 7 publications

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“…Different types of hydraulic non-linear models were proposed in [1]: a non-linear model assuming a non-elastic water column, a model including travelling waves, and a model including a surge tank effect. In [2][3][4][5][6][7], the authors applied a non-linear or linearised model with a non-elastic water column to study the transient behaviour of a Francis turbine. Chen et al provided a nonlinear dynamical model with surge tank presented with state space equations, analysed with bifurcation diagrams, phase orbits and spectrograms [8], however a comparison to the real system was neglected.…”

Section: Introductionmentioning

confidence: 99%

Modelling and Internal Fuzzy Model Power Control of a Francis Water Turbine

Nagode

Škrjanc

2014

Energies

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This paper presents dynamic modelling of a Francis turbine with a surge tank and the control of a hydro power plant (HPP). Non-linear and linear models include technical parameters and show high similarity to measurement data. Turbine power control with an internal model control (IMC) is proposed, based on a turbine fuzzy model. Considering appropriate control responses in the entire area of turbine power, the model parameters of the process are determined from a fuzzy model, which are further included in the internal model controller. The results are compared to a proportional-integral (PI) controller tuned with an integral absolute error (IAE) objective function, and show an improved response of internal model control.

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Section: Introductionmentioning

confidence: 99%

Modelling and Internal Fuzzy Model Power Control of a Francis Water Turbine

Nagode

Škrjanc

2014

Energies

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“…Based on the weather statistics (hourly data), a feasibility study for different possible combinations of renewable sources is studied using optimization techniques to get the optimum configuration. Then the number and size of the selected components is optimized in order to get an economical, efficient, and reliable system [3]. Component sizing is important and widely and extensively studied.…”

Section: Design Of Hybrid Renewable Energy Systemsmentioning

confidence: 99%

“…The environmental degradation such as pollution, global warming, and greenhouse gas emissions which are caused by conventional sources of energy and accelerated by ever-growing industrial activities throughout the world is a concern for all [2]. The current researches, therefore, lay emphasis on harnessing renewable energy sources (RES) for generating electricity to supply power especially, to rural consumers where grid connection is not available [3].A second strategy is to achieve this goal consists of using renewable energy sources. Renewable resources and clean alternative energy power generation technologies have attracted much attention and concern because they have several advantages such as, less dependence on fossil fuel, availability of the resources which are free of cost, and lower harmful emissions to the atmosphere (i.e.…”

Section: Introductionmentioning

confidence: 99%

A Review of Hybrid Renewable Energy System for Interconnected With Electrical Utility

2017

IJAERD

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ABSTRACT:The performance of power system is affectedby dynamic characteristics of hydraulic governorturbinesduring and following any disturbance, suchas occurrence of a fault, loss of a transmission line, arapid change of load or hydraulic transients. The energy demand of many developing countries is more on day by day due to the growth of industrial, economic and social activities etc. Accuratemodeling of hydraulic governor-turbines is essentialto characterize and diagnose the system responseduring an emergency. In this paper, the identification,development and implementation of hydraulicsystems in power plants System configurations, generation unit sizing, storage needs, and energy management and control are addressed.

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“…In a similar way to [23,24], original expressions proposed in [22] were slightly modified according to the measurements obtained in a series of on-site tests. Unlike [22], Equation (5) does not comprise a second term depending on the unit speed deviations, since system frequency deviations are not explicitly considered in this paper.…”

Section: Turbine and Governormentioning

confidence: 99%

Failures during Load-Frequency Control Maneuvers in an Upgraded Hydropower Plant: Causes, Identification of Causes and Solution Proposals

Pérez‐Díaz

Moreno

2015

Energies

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Abstract:The objective of this paper is to investigate the cause of several unexpected high amplitude oscillations that occurred in the surge tank water level of a real hydropower plant during secondary load-frequency control (LFC) maneuvers, after the replacement of the turbine runner, and to propose solutions that allow the power plant to continue providing secondary LFC in a safe and reliable manner. For this purpose, a simulation model has been developed and calibrated from data gathered during several on-site tests. Two different solutions are proposed in order to cope with the observed problem: using a state-dependent load change rate limiter or modifying the hydro turbine governor gains; the turbine governor remains the same as before the runner replacement. The proposed solutions are tested against a set of realistic secondary LFC signals by means of simulations and compared to each other as a function of the probability that the surge tank water level descends below a minimum safe level and the quality of the secondary LFC response. The results presented in the paper demonstrate the validity of the methodology proposed to determine the state-dependent ramp limit, as well as its effectiveness to prevent the surge tank drawdown and to provide clear insight into the trade-off between response quality and power plant safety.

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Field tests to validate hydro turbine-governor model structure and parameters

Cited by 94 publications

References 7 publications

Modelling and Internal Fuzzy Model Power Control of a Francis Water Turbine

Modelling and Internal Fuzzy Model Power Control of a Francis Water Turbine

A Review of Hybrid Renewable Energy System for Interconnected With Electrical Utility

Failures during Load-Frequency Control Maneuvers in an Upgraded Hydropower Plant: Causes, Identification of Causes and Solution Proposals

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