The control system of a doubly-fed adjustable-speed pumped-storage hydropower plant needs phase-locked loops (PLLs) to obtain the phase angle of grid voltage. The main drawback of a comb-filter-based phase-locked loop (CF-PLL) is the slow dynamic response. This paper presents a modified comb-filter-based phase-locked loop (MCF-PLL) by improving the pole-zero pattern of the comb filter, and give...

In engineering construction, the accurate estimation of investment cost can provide a reasonable basis for formulation and decision-making construction scheme. this paper, wind-storage combined operation power station is taken as research object, model established, mode analysed to obtain annual generation. Finally, according generation, per unit electricity established. past, wind farm pumped ...

Electric distribution systems face many issues, such as power outages, high losses, voltage sags, and low stability, which are caused by the intermittent nature of renewable generation large changes in load demand. To deal with these a system has been designed using both short- long-term energy storage superconducting magnetic (SMES) pumped-hydro (PHES). The aim this paper is to propose metaheu...

With the rapid development of pumped storage, vibration problems caused by operation power stations have become increasingly prominent. In this paper, a large-scale pumped-storage station is taken as research object, and three-dimensional refined finite element model underground powerhouse including surrounding rock mass established. Based on analysis source water diversion pipeline, modal dyna...

This paper examines the operation of the Irish power system with very high levels of wind energy, with and without pumped storage. A unit commitment model which accounts for the uncertainty in wind power is used. It is shown that as wind penetration increases, the optimal operation of storage depends on wind output as well as load. The main benefit from storage is shown to be a decrease in wind...

In this paper, the contribution of a hydraulic short-circuit pumped-storage power plant (HSCPSPP) to the load–frequency regulation (LFR) of an isolated power system has been further analyzed by means of simulations. For this purpose, a simulation model has been developed that considers the AGC system and both the synchronized thermal units’ and the HSCPSPP’s response to frequency deviations and...

FMHL (Forces Motrices Hongrin-Léman SA) is the owner’s company that belongs to the shareholders Romande Energie SA, Alpiq Suisse SA, Groupe E SA and City of Lausanne. Alpiq, as owners’ representative, is in charge of the supervision of the study and the implementation of the extension project and the operator is Hydro Exploitation SA. The FMHL power plant is a 240 MW pumped-storage power plant ...

For enhancing the regulation performance and efficient operation of pumped storage power plant, this paper proposed to combine a hydro-generator set with full-size converter achieve decoupling control machine grid. On basis model test, characteristics certain pump-turbine had been discussed implication for was highlighted. At same time, modeling side were presented, simulation results showed th...

Pumped storage stations undergo numerous transition processes, which make the pump turbines go through the unstable S-shaped region. The hydraulic transient in S-shaped region has normally been investigated through numerical simulations, while field experiments generally involve high risks and are difficult to perform. In this research, a pumped storage model composed of a piping system, two mo...