Giuseppe Marco Tina

7 Questions 22 Answers 0 Followers

Questions related from Giuseppe Marco Tina

Is the frequency -dependent load damping constant chancing in large power systems due to the evolution of loads (greater use of power electronics) ?

The raising presence of renewable power plants in large power systems determines the reduction of global inertia and so a modification of the natural answer of the system in case of frequency...

25 September 2018 8,028 5 View

Can anyone provide a simple example about I can change periodically a parameter in a dynamic model implemented in Modelica, please ?

Hi, I have a very simple question about Modelica I have a simple hello world class: class Mode parameter Real a=-1; Real x(start=1); equation der(x)=a*x; end Mode; I want to run...

02 August 2018 6,168 3 View

What are the solutions that can be adopted to reduce the intervention time of primary frequency regulation ?

In an electric power system characterized by a low value of inertia it would be recommended the adoption of a rapid primary regulating logic. In fact an increase of Rate of Change of Inertia...

13 December 2017 9,158 11 View

Do you know precise efficiency models of photovoltaic inverters that consider the variation of the power factor of the power injected into the grid ?

in the smart grids context, the phovoltaic systems could be required to provide ancillary services, such as: voltage regulatio and generation of reactive power. The operation at a power factor...

20 December 2016 5,739 5 View

How can I use the grey neural network to get the uncentainty of irradiance forecast ? what are the input that i have to use to train my NN ?

I am looking some papers and share some experience about the use of grey neural network for irradiance forecast. The main point is the choice of the input and output variable to train the NN.

22 April 2015 8,250 3 View

Do you think that the future of photovoltaic, solar thermal and hybrid PV/T systems is in the building integration?

The solar energy is low density energy so it is perfect to be installed in urban and suburban areas. In this way the zero energy building goal can be reached but many other problems arise for the...

07 July 2014 2,377 11 View

Due to the drastic price reduction of PV modules, do you think high concentration PV systems are still cost-effective?

The price of PVmodule in about 15 years is 1/10, whereas the price of PV systems is halved [1], it implies that the impact of PV modules on the cost of the whole systems is decreasing more and...

09 November 2013 5,161 4 View