7 research outputs found
Sistem centralizovanog upravljanja pumpnim stanicama u sistemima vodosnabdevanja
The pump station centralized management system is described in this
paper. Pump stations represent the elements of extreme importance in these systems with
the great level of expected reliability. However, the majority of these stations in Serbia,
whether they are used for utility systems, or for agriculture, is characterized with low
technical level. This condition consequently leads to the great number of negative
effects, resulting in decreased energy efficiency, increased operational costs and
increased number of failures. In this paper, modern trends in remote process control of
these systems are presented. Complete system architecture is proposed, and the
implementation of this technical solution on one water supply system in Serbia is
described. The introduction of centralized solution for the pump stations control enables
high system reliability and security, increased energy efficiency and optimized
procedures of operational control and maintenance.U radu je opisan sistem centralizovanog upravljanja pumpnim stanicama.
Pumpne stanice imaju veoma znaÄajnu ulogu i predstavljaju elemente sistema od kojih
se oÄekuje velika pouzdanost u radu. MeÄutim, veÄinu pumpnih stanica u naÅ”oj zemlji,
bilo da se nalaze u komunalnim ili poljoprivrednim sistemima, karakteriŔe veoma nizak
nivo tehniÄke opremljenosti. Ovakvo stanje ima za posledicu brojne negativne efekte kao
Å”to su: smanjenje energetske efikasnosti ovih sistema, poveÄanje troÅ”kova proizvodnje i
poveÄanje broja kvarova u sistemu. U ovom radu su prikazane savremene tendencije
kada su u pitanju upravljanje i kontrola procesa i ureÄaja na daljinu. Predložena je
kompletna arhitektura sistema za upravljanje i dat je opis realizovanog integrisanog
tehniÄkog reÅ”enja u sistemima vodosnabdevanja. UvoÄenje kompletnog centralizovanog
reÅ”enja za upravljanje pumpnim stanicama omoguÄava visoku pouzdanost i sigurnost u
sistemu, poveÄani stepen energetske efikasnosti, kao i optimizovane procedure
operativnog upravljanja i održavanja sistema
PraktiÄan primer poveÄanja energetske efikasnosti malih pumpnih stanica reprojektovanjem
The suction station "Gnjilan", belonging to the "Water-supply" Pirot municipal
enterprise, has been used as an example of small pump stations energy efficiency
increasing by replacement of existing old pumps with new ones. It has been shown that it
was possible to identify the pipeline characteristic and an optimum system operating
point, even in the absence of appropriate flow measuring devices. This has been done
using an indirect method of flow estimation by measurement of driving induction motor
elecrtical parameters. In accordance with the obtained results, the new pump has been
chosen. Huge savings in the electrical energy consumption referred to actual situation
will be achieved through the application of the new pump.Na primeru Crpne stanice "Gnjilan" u okviru JP "Vodovod" Pirot, prikazan je
naÄin za poveÄanje energetske efikasnosti malih pumpnih stanica zamenom postojeÄih
pumpnih agregata novim. Pokazano je da je, Äak i u situaciji kada ne postoje
odgovarajuÄi ureÄaji za merenje protoka, moguÄe identifikovati karakteristiku cevovoda
i optimalnu radnu taÄku sistema primenom indirektne metode merenja elektriÄnih
veliÄina pogonskog motora. U skladu sa identifikovanim parametrima, izvrÅ”en je izbor
novog pumpnog agregata Äijom primenom se mogu ostvariti znatne uÅ”tede u odnosu na
postojeÄe stanje sistema
Autonomni sistem za praÄenje rada rezervoara koji su bez napajanja elektriÄnom energijom
Agricultural systems depend on water supply systems in great extent,
whether they are used for irrigation, flood prevention or drinking water supply.
However, in great number of cases, water reservoirs are built on locations without
electrical energy supply, which makes the use of electronic control systems impossible,
unless the autonomous electrical source is not assured. In this paper, technical solution
for autonomous supply of the system for the monitoring of water reservoir performances,
without public distribution grid supply is presented. The system is based on photovoltaic
solar panel, and architecture and system functionality are described. For the sake of
illustration, results of practical application of one system located in Nis are presented.Poljoprivredni sistemi u velikoj meri zavise od sistema vodosnabdevanja,
bilo da se radi o navodnjavanju, zaÅ”titi od poplava ili snabdevanju vodom za piÄe.
MeÄutim, u velikom broju sluÄajeva, rezervoari se grade na lokacijama na kojima nema
napajanja elektriÄnom energijom, tako da rad elektronskih sistema namenjenih
upravljanju sistemom nije moguÄ, ukoliko se ne obezbedi autonomni izvor napajanja. U
ovom radu je opisano tehniÄko reÅ”enje primenjeno za formiranje autonomnog sistema za
praÄenje parametara rada rezervoara u kojima nema napajanja elektriÄnom energijom iz
distributivnih sistema. Radi ilustracije, prikazani su i rezultati praktiÄne primene jednog
ovakvog sistema na rezervoaru u NiŔu
Laboratorijsko postrojenje za preÄiÅ”Äavanje i magnetnu obradu otpadnih voda
In this paper we present the description of laboratory installation for filtration
and magnetic treatment of oiled waste water, whose integral parts are the magnets for
magnetic treatment of water, and attached is equipment for electrical power supply,
magnetic measurement, control and protection of overheating Addition to basic
application of this installation is that it can be used for testing and monitoring of the
effects of magnetic treated water which is used in different fields of industry, agriculture,
medicine, etc.U radu je dat prikaz laboratorijskog postrojenja za preÄiÅ”Äavanje i magnetnu
obradu zauljenih otpadnih voda. Sastavni deo postrojenja su i magneti za magnetnu
obradu vode sa prateÄom opremom za elektriÄno napajanje, magnetna merenja,
regulaciju i zaŔtitu od preteranog zagrevanja. Pored osnovne namene postrojenje može
da se koristi i za ispitivanje efekata magnetne obrade vode za primenu u razliÄitim
oblastima industrije, poljoprivrede, medicine i dr