7 research outputs found

    Sistem centralizovanog upravljanja pumpnim stanicama u sistemima vodosnabdevanja

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    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 značajnu ulogu i predstavljaju elemente sistema od kojih se očekuje velika pouzdanost u radu. Međutim, većinu pumpnih stanica u naÅ”oj zemlji, bilo da se nalaze u komunalnim ili poljoprivrednim sistemima, karakteriÅ”e veoma nizak nivo tehničke opremljenosti. Ovakvo stanje ima za posledicu brojne negativne efekte kao Å”to su: smanjenje energetske efikasnosti ovih sistema, povećanje troÅ”kova proizvodnje i povećanje broja kvarova u sistemu. U ovom radu su prikazane savremene tendencije kada su u pitanju upravljanje i kontrola procesa i uređaja na daljinu. Predložena je kompletna arhitektura sistema za upravljanje i dat je opis realizovanog integrisanog tehničkog reÅ”enja u sistemima vodosnabdevanja. Uvođenje kompletnog centralizovanog reÅ”enja za upravljanje pumpnim stanicama omogućava visoku pouzdanost i sigurnost u sistemu, povećani stepen energetske efikasnosti, kao i optimizovane procedure operativnog upravljanja i održavanja sistema

    Praktičan primer povećanja energetske efikasnosti malih pumpnih stanica reprojektovanjem

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    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 način za povećanje energetske efikasnosti malih pumpnih stanica zamenom postojećih pumpnih agregata novim. Pokazano je da je, čak i u situaciji kada ne postoje odgovarajući uređaji za merenje protoka, moguće identifikovati karakteristiku cevovoda i optimalnu radnu tačku sistema primenom indirektne metode merenja električnih veličina pogonskog motora. U skladu sa identifikovanim parametrima, izvrÅ”en je izbor novog pumpnog agregata čijom primenom se mogu ostvariti znatne uÅ”tede u odnosu na postojeće stanje sistema

    Autonomni sistem za praćenje rada rezervoara koji su bez napajanja električnom energijom

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    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 piće. Međutim, u velikom broju slučajeva, rezervoari se grade na lokacijama na kojima nema napajanja električnom energijom, tako da rad elektronskih sistema namenjenih upravljanju sistemom nije moguć, ukoliko se ne obezbedi autonomni izvor napajanja. U ovom radu je opisano tehničko reÅ”enje primenjeno za formiranje autonomnog sistema za praćenje parametara rada rezervoara u kojima nema napajanja električnom energijom iz distributivnih sistema. Radi ilustracije, prikazani su i rezultati praktične primene jednog ovakvog sistema na rezervoaru u NiÅ”u

    Laboratorijsko postrojenje za prečiŔćavanje i magnetnu obradu otpadnih voda

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    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 prečiŔćavanje i magnetnu obradu zauljenih otpadnih voda. Sastavni deo postrojenja su i magneti za magnetnu obradu vode sa pratećom opremom za električno napajanje, magnetna merenja, regulaciju i zaÅ”titu od preteranog zagrevanja. Pored osnovne namene postrojenje može da se koristi i za ispitivanje efekata magnetne obrade vode za primenu u različitim oblastima industrije, poljoprivrede, medicine i dr
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