Abstract With the goal of “double carbon,” wind power and PV are connected to grid on a large scale, which poses great challenge safe operation grid. The synergistic optimization “hydro-wind-PV hybrid systems” can bring into play ability coordination mutual assistance between different types sources, is one important measures increase reduce abandoned photovoltaic power. Based analysis characte...

With the construction of major hydro plants, more and more large-scale hydropower systems are taking shape gradually, which brings up a challenge to optimize these systems. Optimization of large-scale hydropower system (OLHS), which is to determine water discharges or water levels of overall hydro plants for maximizing total power generation when subjecting to lots of constrains, is a high dime...

The short term cost optimal dispatch of electric power in a generation sys tem under uncertain electricity demand is considered The system comprises thermal and pumped storage hydro units An operation model is developed which represents a multistage mixed integer stochastic program and a conceptual solution method using La grangian relaxation is sketched For xed start up and shut down decisions...

This paper studies the neural network nonlinear autoregressive with exogenous signal (NNARX) model identification of elastic and inelastic hydro power plant. A nonlinear relationship between the turbine deviated power and random gate position on random load variation and water disturbance is assessed. The identified elastic NNARX hydro plant model is simulated with predictive controller to trac...

This paper is the result of a study undertaken to assess the steady state and transient behavior of an Induction Generator (IG) driven by Mini Hydro or Wind turbines under grid abnormalities, as encountered in practice. Behavior under varying input power typically observed in wind machines is also reported. A computer simulation study was undertaken and results on a 220 KW Hydro machine and 55 ...

Water is a critical issue in China for a variety of reasons. China is poor of water resources with 2,300 m(3) of per capita availability, which is less than 13 of the world average. This is exacerbated by regional differences; e.g. North China's water availability is only about 271 m(3) of per capita value, which is only 125 of the world's average. Furthermore, pollution contributes to water sc...