U septembru 2016. godine Elektrovat je pustio u rad prvu od svoje tri mini-hidroelektrane na reci Crni Rzav. Ovde možemo biti svedoci tehnologije koja do sada nije viđena u Republici Srbiji u vezi sa unosom vode i transportom.

Reč je o novoj građevinskoj koncepciji vodozahvatne pregrade tipa COANDA, koja svodi na najmanju moguću meru najteže probleme iz prakse zahvatanja vode, te primeni PVC cevi velikih prečnika (1,8 metara) izrađivanih na licu mesta tehnologijom “spiralnog motanja”, što obezbeđuje neuporedive uštede u transportu.

Mala hidroelektrana Beli kamen je protočna elektrana, snage 1,68 MW. Projektovana je da radi bez posade, odnosno implementirani su daljinsko upravljanje i nadzor. Daljinski pristup može se postići sa bilo kog mesta koje ima internet vezu.

Elektrana ima instalisani protok 2,7 m3/s, a godišnji kapacitet je 6,5 gigavat časova električne energije.

Kompanija Elektrovat ima status povlašćenog proizvođača električne energije. Mala hidroelektrana Beli kamen izgrađena je i funkcioniše u punom projektovanom kapacitetu po svim ekološkim standardima razvijenih zemalja (obavezni protok, zaštita flore i faune, minimalni loš uticaj na prirodno okruženje), a njenom izgradnjom urađeni su i infrastrukturni preduslovi za izgradnju drugih malih hidroelektrana (oko 9), koje su planskim aktima predviđene za gradnju na rekama Crni Rzav, Ribnica i Jablanica.

By doing this we solved many problems:

We had an opportunity to try out a new solution in the production of spiral pipes made of polyethylene, for the supply of water to the water chamber and the pressurized pipeline. In the construction of the power plant, for the first time in Serbia, large diameter PVC pipes (1.8 meters diameter) were used, made on the spot using the „spiral winding“ technology under the Vesbo license.

Namely, for pipes with a diameter of more than 1,200 millimeters, the problem is transport. Since we do not manufacture pipes of that size in our country, they are transported from Turkey, and the price of transportation is usually higher than the value of the pipes themselves. For the first time in Serbia, the company Elektrovat applied the production of such pipes at the installation site – raw materials were delivered from Turkey and using fairly simple machines, pipes up to 1,800 millimeters in diameter, as needed, were wound on the construction site, which significantly reduced costs. At the same time, due to the volume of the pipes, the possibility of water accumulation was created and this enables usage of pipes when small flow rates are present.

The power plant was designed and constructed to work in a „cascade“ with the next downstream power plant since the pipeline goes from one to another and does not return water to the river.

Beli Kamen on Crni Rzav has two units (with Francis turbines) of 1,220 and 470 kilowatts, as well as a regulated bypass of the total flow to the downstream power plant, which in case of generator malfunction, can transfer the same amount of water to the next power plant.

The small hydroelectric power plant Beli Kamen has a capacity of 1.68 MW. It has an installed flow of 2.7 m3 / s, a useful drop of 73 to 75 meters, and a mandatory flow of 140 l / s. The power plant has an extremely high degree of utilization of available hydro potential and is designed to operate for four decades before the first overhaul.