how to supply power to dam instrumentation?

[eliahud79]

i have a project to supply power to instrumentation devices of dam, there are about 120 devices scattered at 0.5 square km area, the length of the dam about 1 km, consumption of each instrumentation device about 10w, there is no option to get supply from grid of electric company.
supply options:
- solar panel + charger+ battery for each instrument
- small diesel generator with dummy load of 25%
- small diesel generator with dummy load of 25% + UPS
- other option?

please advice me what is the good solution

thanks

 

[itsmoked]

??? How can we say? You've told us almost nothing.

Is this for a day? A week? Years? Permanent?

Are these loggers that have to be manually read out? Radio?

Why can't you use the local power even if you have to pay for it?!

Can wires run between nearby sensors?

What are you sensing?

Keith Cress
kcress -

http://www.flaminsystems.com

 

[Skogsgurra]

Assume permanent. Assume a local grid possible.
What about a small hydroelectric generator? There's water. Proven technology. 24/7 availability. Low maintenance. Environmentalists can't object.

Gunnar Englund

http://www.gke.org

--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.

 

[eliahud79]

thank you

there is a grid 50 km of the dam, the costomer have to pay very much money to connect to the grid for total consumption of 100 kW ,so he want another alternative.
the instrument for permanenet use, manual reading, except of few instrumenatation for radio transmission.
hydroelectric station shall be installed in future their is not enough need for power in the region at the near future.

thank you again

 

[Skogsgurra]

I said *small* hydroelectric generator. No need to wait for later installations. There are micro generation machines available at good prices. Just buy one and put it at a suitable level. Low cost, almost free energy, reusable.

Gunnar Englund

http://www.gke.org

--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.

 

[itsmoked]

If you actually need 100kW and not just what instruments need then a mini hydro plant might make the most sense.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[waross]

I agree with Gunnar and Keith. The next option may be solar. How much power do you really need?

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[eliahud79]

thank you

the project need about 100kW for irrigation and about 2 kW for the dam instrumentation.
where i can get information about small hydroelectric plant

thanks

 

[burnt2x]

Google "microhydro generators".

 

[waross]

Consider driving the irrigation pump directly with a turbine.
The instrumentation load and controls for the irrigation system may then be run by a solar system.
This may result in a simpler, cheaper and more dependable system and the instruments will not be affected by irrigation problems.

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[eliahud79]

thank you

 

[jghrist]

What is the supply voltage? AC or DC? How about a central station battery and charger and run supply wires to each instrument. Are all instrument outputs wired to a common location?