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Contenu archivé le 2022-12-27

GAS EXPANSION IN THE DISTRIBUTION GRID

Objectif

The aim of the project is to demonstrate the technical and economical feasibility of the application of a gas expansion turbine, in combination with cogeneration, in the gas distribution grid, with gas supply regulation.
The results of the project are mainly positive. The installation has proven to be very reliable. The turbine-installation shows very few failures. The interplay between the turbine and the gas reduction streets is tested comprehensively and passes very smoothly. The interplay between CHP and turbine has given some problems during the first year of operation. A change of the software in the overall control system has shown to be very successful. The change entailed the operation of the CHP-units at part load, depending of the heat-demand for the turbine installation.
The application of a gas expansion turbine (GET) in a gas supply station for the gas distribution of the city of Amsterdam. The pressure reduction over the GET is from 40 to 9 bara. The required heat to compensate for the drop in temperature in during the expansion process is provided for by a cogeneration installation (CHP), consisting of six gas engines. The electricity produced by both the GET and the CHP is fed into the Amsterdam electricity grid. The dynamic application of a Get in a public distribution grid, where security of gas supply is of primary importance, differs from stationary applications in two essential innovative aspects :
1) The gas to the town of Amsterdam is supplied by 5 gas supply stations located around the town. With the GET installed at the station "South", the gas for the whole town must be directed with priority through this station South. This requires a dynamic regulation involving the five gas supply stations and securing at the same time to meet the gas demand at all sectors of the town. 2) Until now the gas quantity regulation has been passive. The operation of the GET in parallel to the gas supply station South requires a special automized regulation in which the GET has supply priority and the existing gas reduction streets of station South cater for reserve and peakload situations.
The GET operates with a variable gas flow, with a maximum of 110.000 m3/h. The maximum power generated by the turbine/generator set is almost 4.000 kWe. The six gas engines produce together maximal 2.760 kW of electrical power and 4.000 kW of heat. The maximal heat demand for heating the natural gas is 5.200 kW. Therefore there will also be three boilers installed, with a total heating capacity of 2.000 kW.

Appel à propositions

Data not available

Régime de financement

DEM - Demonstration contracts

Coordinateur

GEMEENTE-ENERGIEBEDRIJF AMSTERDAM (GEB)
Contribution de l’UE
Aucune donnée
Adresse
POSTBUS 41920
1009 DC AMSTERDAM
Pays-Bas

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Coût total
Aucune donnée