Service Communautaire d'Information sur la Recherche et le Développement - CORDIS

Methodology for quantifying economic benefits of Microgrids

- A methodology to quantify the reduction in carbon, SO2 and NOx gas emission obtained from reduction in energy supplied by hydrocarbon based power plants

- A method based on Linear Programming problem to maximise the value of micro CHP by optimising the schedule of electricity and heat generation taking into account seasonal variations in domestic heat and electricity demand, electricity prices, gas prices, room insulation, and ambient temperature.

- The method is used to quantify the economic benefits of replacing old conventional boilers with new domestic CHP, and the break even period of investment. The case studies demonstrate promising results as the break even can be 5-10 years and it can be expected to be lower as the price of dCHP falls.

- The method can also be used to quantify the impact of increased efficiency in the domestic utilisation of gas and electricity on the reduction of CO2 emission. It is demonstrated that 0.3 0.5 kT CO2 reduction can be achieved with 1 M installation of dCHP.

- A generic urban and rural distribution network has been developed to provide high-level details on distribution network. The model can incorporate typical characteristics of the networks such as length, impedance, capacity, yardstick costs, and network loading, demand and generation distribution for various voltage levels.

- An optimisation methodology and load flow calculation have been developed to calculate losses, power flows, voltages and DG curtailment required to satisfy network limits.

-Various case studies have been performed on the generic network to quantify the benefits of microgrids in terms of:
-- Losses reduction;
-- Ability to correct power factor by providing reactive support;
-- Increasing spare capacity, deferring new network investment.

-The result of the studies demonstrate different value of implementing microgrids in rural and urban network, different value for dCHP and PV technology

- A methodology to calculate the benefits of enabling islanded operation in Microgrids based on reliability assessment.

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United Kingdom