Pilot Microgrids
F8. F.Y.R.O.M - Kozuf Microgrid
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Location
description
The Kozuf Microgrid should cover the electricity needs of a small
sheepfold, located near the new ski-centre on Kozuf Mountain. The sheepfold
owners, who are also involved in the ski-centre investment, have envisaged
utilization of renewable energy sources for electricity supply for the
sheepfold. Within the ski-centre
project, there is also a Waste Water Treatment Project that will allow
treatment of the ski centre municipal wastewater. Further on, the idea is to construct a pilot plant for biogas production which will accept
the surplus sludge from the municipal waste water treatment plant, the biomass
from the sheepfold as well as the waste water from a small diary production
line which exists at the sheepfold. The plant will be constructed underground
and located close to the sheepfold. The produced biogas will be used for
electricity production, while the fermented waste will be composted and will be
used as an organic fertilizer. The assessment of daily energy production from
the biogas plant is given in the table below.
Table1. Assessment of daily amount of
energy
| Daily number | Daily biogas production factor | Daily biogas production (m3/day) | Daily amount of energy (MJ/day) Calorific value of biogas 25.06-26.85 MJ/m3 |
|---|
| Human sludge | 9500 persons | 0.019 m3/day/person | 180.5 | 4523.33 - 4846.42 |
|---|
| Sheep manure | 5000 sheep | 0.033 m3/day/sheep (in summer) | 165 | 6891.50 - 7383.75 |
|---|
| 0.077 m3/day/sheep | 385 |
| average value: 275 |
|---|
| Dairy line | | | Insignificant | Insignificant |
|---|
| TOTAL | | | 455.5 | 11414.83 - 12230.17 |
|---|
To meet the electricity needs of the sheepfold, utilization of
additional RES (PV) is also envisaged.
Currently, the electricity for the sheepfold is provided by fuel
generators, each of them with rated power of 5kW. One of the generators is kept
as reserve and is activated only when needed.
The location is isolated, but a 35kV will be built to enable
connection of the ski-centre to the grid. The project for constructing the 35kV
line is already revised and the actual works should start in May 2007 finish in
August the same year. Afterwards, the investors plan to build a connection from
the sheepfold to the grid.
