Transcript of "Visiting a hydroelectric power plant in Daugavpils region"
Little Hydroelectric PowerPlant in my VillageMade by Latvian Comenius teamMade by Latvian Comenius team
Types of Electrical Power:Thermoelectricpower stationWind powerHydroelectric powerstationSolar power
In Latvia 70% of all ElectricalPower is Made by 3 Big HEPPsRīga HEPPĶegums HEPPPļaviņas HEPP
HISTORY OF ELECTRICITYHISTORY OF ELECTRICITY• The first time electrical phenomena wasdescribed in Greece most probably in the17th century.• People who were related to electricityhistory :
History of Electricity in LatviaHistory of Electricity in LatviaIn Latvia people started to use the electricalenergy in 1970. The first electricity companieswere found in 19.-20. century. 1939 – thebeginning of Latvian power system. In 1955more power stations began to operate.
About electricity nowadaysAbout electricity nowadaysIn Latvia there are still some estates where isno electricity (in Latvia 0,1 % people do not haveelectricity), because :•some houses are locatedfar from inhabited centers;• people do not have moneyto pay for the electricity.
HEPPsHEPPsHEPP is power station which uses water toproduce electricity. Hydroelectric powerstations produce about 7% of the world energy.
Small HEPPs in LatviaSmall hydropower stations began to developin 1950. From 1945 to 1960 were built 20small rural HEPPs . In 1998 35 smallHEPPs operated in Latvia .
ADVANTAGESADVANTAGESIT IS A RENEWABLE ENERGY+ Hydroelectric produces much electricity;+ Energy is rather cheep;+ The pollution is minimal;+Stations can operate for many years;+ They are more economic for home owners than solarpower;+ People will have workplace (decrease the rate ofunemployment);+A HEP produces about 500 Kw per hour, but each familyconsumes about 200 kw per month.+ In this river is little fish, so the fish will not suffer as ithappens on larger rivers during the spawn (for example,salmons)
DISADVANTAGESDISADVANTAGES- HEPs will flood neighborhood, biggerareas would be under water;- Careless people can drown;- The construction of dam is ratherexpensive