Christophe Nicolet

TL;DR: In this article, a model of an elementary pipe is derived from the governing equations, i.e. momentum and continuity equations, and the use of appropriate numerical schemes leads to a discrete model of the pipe consisting of a T-shaped equivalent electrical circuit.

TL;DR: This paper presents the modeling, simulation, and analysis of the dynamic behavior of a fictitious 2 × 320 MW variable-speed pump-turbine power plant, including a hydraulic system, electrical equipment, rotating inertias, and control systems, and a proposed simplified approach for the converters.

TL;DR: In this article, the transient operation of an islanded power network subject to load rejections is modeled using a 1-GW hydroelectric power plant with four generating units, a long penstock, and a surge tank.

TL;DR: In this paper, a one-dimensional draft tube model is derived from flow momentum and continuity equations including the convective terms that are not considered in the existing models, and a parametric analysis of the model is carried out to investigate the influence of parameters on the cavitation surge onset identified by the hydraulic system stability.

TL;DR: In this article, the authors presented the extensive unsteady wall pressure measurements performed in the elbow draft tube of a high specific speed Francis turbine scale model at low discharge and at usual plant value of the Thoma cavitation number.