MYRTLE Corsica store solar electricity into hydrogen

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MYRTLE Corsica store solar electricity into hydrogen




by Christophe » 12/01/12, 09:02

Myrte is a functional "large" scale hydrogen solar energy storage project! And it's in France ... well almost ... in Corsica ... : Cheesy:

CEA, the University of Corsica and HELION (Areva Group) launched the January 9 2012, in Ajaccio, the Scientific Research Centre Georges Peri, the platform for research and development and solar energy storage: MYRTLE.

This platform supported by the Territorial Authority of Corsica, the State and Europe aims to experiment and make possible the massive integration of renewable energies in the energy mix of Corsica on the basis of a coupling "Renewable Energies - Hydrogen. "

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How to convert energy from the sun, subject to random yields, power source available at any time?

It is to address this issue was born in 2007, the project MYRTLE (renewable hydrogen Mission for the grid integration). After five years of research, the platform MYRTLE born in Ajaccio. The platform consists of a photovoltaic plant, with an installed capacity of about 560 3.700 KWc m2 directly connected to a hydrogen chain, used as a storage medium.

MYRTLE The platform will enable to develop a system and a control strategy to improve the management and stabilization of Corsican grid. Hydrogen, produced and stored, allows power fluctuations intermittent renewable energy integrated into the network.

Specificity of islanders

Corsica's power grid has all the characteristics of island networks of small, sensitive to manufacturing variations, limited capacity of new means of production, with a strong increase in electricity demand. Among the resources used to meet this growing need for energy, renewable energy sources are particularly suited to Ilien context.

Renewables are intermittent energy called for the photovoltaic and wind energy, and energy such warranties regarding hydro, biomass, biogas and geothermal. The intermittent renewables are so named because they are experiencing strong temporal variations, and therefore does not guarantee a continuous supply of power to the network or its balance between production and consumption of electricity.

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Today, the use of fossil fuel is important in some sunny regions like Corsica or French overseas territories. The aim of the platform is MYRTLE store energy via an electrolyser, which converts electricity into hydrogen and oxygen during the hours of low consumption. This energy is then returned via a fuel cell, which converts hydrogen and oxygen into electricity on the network during the hours of high consumption, that is to say, the night when the solar panels produce more.

All this in order to effectively limit the use of thermal power plants and to overcome the limit of 30% integration of intermittent renewable energy imposed by the decree of April 23 2008.

Island electricity networks not interconnected with a high level of integration of renewable energy sources require a device for managing the intermittency of these (regulatory, storage).

Hydrogen, produced and stored, allows power fluctuations intermittent renewable energy integrated into the network.

It will examine the system's ability to respond to a peak clipping goal called by the grid (support to the distribution network) and smoothing of the produced photovoltaic power (limit fluctuations and disturbances on the electrical network).

In addition, further work as the study of the aging of materials, systems, but also the comparison of results of simulation software and design ORIENTED with reality may be made. Other operating strategies can be envisaged in order to study their impact on the control system control.

MYRTLE The platform is dedicated to the coupling between a photovoltaic field and a hydrogen string used as a storage medium.

The charge, that is to say the supply to the power grid, maybe in this case powered by the photovoltaic field or the fuel cell via the stored hydrogen. Different operating strategies are developed and implemented in the command control system, but also from simulations obtained through ORIENTED software. This software, developed by the University of Corsica, is dedicated to hybrid systems coupled to a hydrogen chain. This tool simulates the distribution of energy flows over time between different subsystems integrating their characteristic behaviors. As part of MYRTLE, ORIENTED allowed simulation, dimensioning and optimizing the energy system.

Advantages of solar energy and hydrogen coupling vector

The coproduction of electricity and hydrogen - energy carrier - from this solar energy can provide a non-polluting fuel, hydrogen without emitting greenhouse gases.

This technology aims to:

• clipping peak consumption, restoring the evening on the network the stored electrical energy,
• mitigation of production variations related to the passage of clouds, for example,
• limiting surges linked to the strong photovoltaic production in a low consumption context.

In this sense, a MYRTE type system can help to limit the technical constraints related to a massive penetration of photovoltaic energy on the electricity grid.

The heat produced by the fuel cell and electrolyzer will be valued by bringing hot water to adjoining buildings or by heating.


Source: http://www.enerzine.com/1/13272+corse-- ... gene+.html

ps: myrtle is also the most famous water of Corsican life : Cheesy: No chance that this is a chance this name!
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by Projéthée » 12/01/12, 09:17

Nice on paper, but what about the overall performance. I have trouble believing that with such means we can do better.
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by Christophe » 12/01/12, 09:26

The goal is stated in the article: limiting peaks and current variations in conso or production.

If not for the record, the Corsican electricity is exclusively heavy fuel !! But paid, low price of the metropolis through the CSPE ... Imagine if the Corsican had to pay their electricity following changes in gross?

So any move to limit the use of oil is not good to take?

It is in Corsica that I crossed, in truth, the largest park PV ...

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It thus extended over several hundred meters on the road to Corte coming Aleria ...
Last edited by Christophe the 12 / 01 / 12, 09: 43, 1 edited once.
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by sherkanner » 12/01/12, 09:42

Mouaif, the production yield of hydrogen is quite low in general, about 25-40%. A ca we add performance in the stack of hydrogen 60%, we do restitueras that has 15 24% of the energy supplied by the panels.

And yield signs are already there, it'll have to rotate the center a very long time, especially at the current price of energy to make it profitable.

At first all they are seeking is flexibility, but here the price: s


water electrolysis efficiency.
http://fr.wikipedia.org/wiki/%C3%89lect ... de_l%27eau

Efficiency cells (SOFC)
http://fr.wikipedia.org/wiki/Pile_%C3%A0_combustible
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by Christophe » 12/01/12, 09:46

Of course the overall performance is not good ... but the conversion is not used all the time ... just when needed.

And economically, compared with the real cost of electricity Heavy oil, It may be interesting even in the medium term!
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by Janic » 12/01/12, 09:52

I do not believe that profitability is the goal, but independence has on fossil energies or not. A road is not more profitable than automobile rolling over and it could take many other similar sectors.
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by Christophe » 12/01/12, 09:58

So I refer to the debate on what are the economic profitability?

Or type "profitability" in https://www.econologie.com/forums/search.php
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by Cuicui » 12/01/12, 10:50

sherkanner wrote:Mouaif, the production yield of hydrogen is quite low in general, about 25-40%. Efficiency cells (SOFC)

Heard a report on German Arte combine hydrogen with CO2 to make methane easier to store (in large gasometers) and can be fed into the grid or feed a power plant when needed.
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by Christophe » 12/01/12, 11:34

Cuicui Yes, I believe much more in the chemical conversion of H2 has its compression ... if need transportation.

We could combine with nitrogen or air O2 also ...

N2H4: http://fr.wikipedia.org/wiki/Hydrazine (Rocket fuel)
H2O2: http://fr.wikipedia.org/wiki/Peroxyde_d ... og%C3%A8ne
C2H2: http://fr.wikipedia.org/wiki/Ac%C3%A9tyl%C3%A8ne

For example...

After converts methane can also liquefy the BtL: https://www.econologie.com/liquefaction- ... -2989.html

Solutions there are dozens ... hundreds ... not that blocks ca ...
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by Cuicui » 12/01/12, 11:58

Christophe wrote:Cuicui Yes, I believe much more in the chemical conversion of H2 has its compression ... if need transportation.
We could combine with nitrogen or air O2 also ...
N2H4: http://fr.wikipedia.org/wiki/Hydrazine (Rocket fuel)
H2O2: http://fr.wikipedia.org/wiki/Peroxyde_d ... og%C3%A8ne
C2H2: http://fr.wikipedia.org/wiki/Ac%C3%A9tyl%C3%A8ne
For example...
After converts methane can also liquefy the BtL: https://www.econologie.com/liquefaction- ... -2989.html
Solutions there are dozens ... hundreds ... not that blocks ca ...

Hydrazine and peroxide are toxic. Methane is coolest. Liquefaction consumes energy.
Methane storage in the state increases in volume, but this is apparently the simplest solution, in addition to biogas stations biomass.
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