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...

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...

This paper contributes towards exploring the technical and institutional feasibility of small hydropower storage and pumped-storage schemes in Switzerland. Within the European and Swiss context of the facilitation of renewable energy technologies, which includes small hydropower (SHP), intermittent sources such as solar and wind increase the need for additional energy storage capacities. Hydrop...

A novel Pumped Thermal Energy Storage (PTES) system thermally integrated with a Concentrating Solar Power (CSP) plant is proposed and investigated. The two sections operate the same working fluid, share several components can simultaneously or independently of each other. (TES) composed three thermocline packed-bed tanks included. Specific mathematical models were developed to simulate performa...