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SOME ASPECTS OF FORMATION OF THE UNIFORM MARKET EU
Authors: V.M. Postolati,
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Abstract: The basic aspects of association power systems and creation of the general market of the electric power of the countries of the EU - CIS are given in the work. The ecological indicators used in the EU - CIS are described. Some technological offers are given which Молдова could offer to use at creation of association power systems the EU - CIS |
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Keywords: Parallel work of power systems, ecological indicators, general market of electrical energy.
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OPTIMIZATION OF PAYMENTS ON ELECTRICITY MARKET
Authors: Aleskerov F.T., Sit B.M.,
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Abstract: In this paper the dynamic analysis of the processes, which take place on electricity market during the transition period is shown. The system of equations, which describes electricity market between adjacent regions and allows forecasting electricity consumption volumes and electricity prices in these regions for given time interval, is examined. A model on electricity consumption and prices dynamics is described. Criterion of maximization of total revenue of the companies producing electricity in examined regions is considered. |
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Keywords: electricity consumption; electricity prices; dynamic analysis of processes on electricity market.
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POTENTIAL POSSIBILITIES AND OUTLOOKS OF THE DEVELOPPMENT OF SMALL BUSINESS IN ENERGETICS
Authors: Nina Faurash Free International University of Moldova, Republic of Moldova
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Abstract: The situation in a power complex of Republic Moldova at a stage of privatization and occurrence of set of patterns of ownership is analyzed. Occurrences of small business as the partner of the enterprises will promote increase of efficiency of functioning of a power complex, improvement of controllability of this making national economy, and also more to an effective utilization of primary power resources. |
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Keywords: energetics, monopoly, energy effectivity, restructuring, small business
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| 4 |
AUTOMATIC CONTROL SYSTEM OF THE DRUM BOILER SUPERHEATED STEAM TEMPERATURE.
Authors: Juravliov А.А., Şit М., Poponova О., Sit B., Zubatîi А. Institutul de energetică al AŞM, Republica Moldova
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Abstract: The control system of the temperature of the superheated steam of the drum boiler is examined. Main features of the system are the PI-controller in the external control loop and introduction of the functional component of the error signal of the external control loop with the negative feedback of the error signal between the prescribed value of steam flowrate and the signal of the steam flowrate in the exit of the boiler in the internal control loop. |
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Keywords: steam boilers, automatic control of superheaters.
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THE APPROACHES TO FORMATION OF SYSTEM OF ECOLOGICAL INDICATORS AS THE PART OF THE SYSTEM OF INDICATORS OF POWER SECURITY
Authors: Bicova E.V.,Tsaranu M.H., **Kirillova T.I.*
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Abstract: The statement of the task of necessity of more detailed study of questions of ecological security for RМ is executed as the part of energy security in light of consideration of a question of association of the markets of the electric power «East - West" in the article. The system of indicators of ecological security is generated. It includes indicators accepted as uniform for all countries Eurelectric EU-CIS, and also additional indicators, and has interrelations with system of indicators used for the analysis of energy security RМ. The structure of the possible analysis of ecological security is given, the initial data are prepared and the accounts for the part of ecological indicators are carried out. |
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Keywords: Energy and ecological security, indicator, manufacture of the electric power, consumption of fuel, emissions, association of the markets of the electric power.
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| 6 |
THE COMPARATIVE ANALYSIS OF ECOLOGICAL INDICATORS
Authors: Bicova E.V.,
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Abstract: The comparative analysis of ecological indicators designed and specified for Moldova and similar indicators of the countries of CIS is made in the work. Some general items of information about power systems of the countries of CIS (the established capacities, manufacture of the electric power) are given, the analysis of dynamics of emissions GHG- СО2, NOx, SO2 in Moldova and comparison with the emissions level in other countries of CIS is made. |
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Keywords: Energy and ecological security, indicator, manufacture of the electric power, consumption of fuel, emissions GHG, association of the markets of the electric power of the EU - CIS.
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| 7 |
TUNED IPC WITH TWO DEGREES OF FREEDOM
Authors: Kalinin L.P., Zaitsev D.A., Tirshu M.S.,
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Abstract: This paper introduces a new family of IPC-UPFC combination for independent control of active and reactive output power, the control strategy is presented to maintain the required power characteristics. |
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Keywords: Interconnection, Phase Shifting Transformer, Susceptances, Unified Power Flow Controller.
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| 8 |
EQUIVALENT CIRCUIT OF THE PHASE-SHIFTER FOR ITS WORK IN A SYMMETRIC MODE.
Authors: Suslov V.M.
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Abstract: In article equivalent circuits for a symmetric mode of the major elements of a controlled electricity transmission - phase-shifters are developed and proved. In view of an opportunity of use of these equivalent circuits at calculation of symmetric modes on the basis of the standard software, for example a program complex RASTR they are offered in variant without use of mutual-inductance elements. The analytical material by definition of elements of the developed equivalent circuits is resulted. |
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Keywords: Phase-shifter, symmetric mode, equivalent circuit.
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| 9 |
POSSIBILITY OF THE ENERGY SAVING SNAP OF SOME ORGANIC MATERIALS
Authors: Anisimov V.K., Berzan V.P., Tirshu ,V.M. Postolati, (Institute of Energetics of the Academy of Sciences of Moldova), Lupashcu T.G., (Institute of Chemistry of of the Academy of Sciences of Moldova), Geru I.I., Gareeva S.N., Mitina T.F.(Center of automatization and metrology of the Academy of Sciences of Moldova). M.S.,
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Abstract: The volt - amperes characteristic of various water solutions of etil spirit and multicomponent organic substances of juices and wines were investigated. Three characteristic zones are revealed. A zone of low voltage (0-3.5)V and small currents fading in time. The zone of linear dependence of a current on the application voltage (4-14)V and a zone of nonlinear dependence of electrical conductivity at voltage more then 15 V for the given design of a measuring cell. The linear parts of characteristics can be used to develop the techniques for express train analysis of the volumetric contents of etil spirit in a solution at low expenses of energy. It is established that the short-term influence of an electric field does not result in seen changes of initial parameters of a product. |
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Keywords: Sap, volt-ampere characteristic of juices and wines.
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| 10 |
ABOUT PHYSICOCHEMICAL PROCESSES AT ELECTROLYTIC DECOMPOZITION OF THE WATER
Authors: Berzan V.P., Anisimov V.K.
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Abstract: Physical processes are investigated at electrolyze waters from the power point of view at small density of a current.Reception of hydrogen is possible not only at the well-known charge of the electric power exceeding energy which can be received at burning this hydrogen (about 12 MJ/m3), but under some conditions and at the smaller charge of the electric power. The minimal density of a current (10 А/m2) is determined at which restoration of ions of gases occurs in the energy-economic way, and also value of density of a current (107А/m2) at which in a solution of electrolyte begin plasma discharges.It is experimentally shown, that if the condition of maintenance of the minimal density of a current is carried out only on one electrode also liberation of gas occurs on it as short-term transient. The kind of this gas (hydrogen or oxygen) is determined by polarity of a supplay of electrolitical cell. Values of a voltage at which gas on electrodes is not recepted are experimentally determined, is receipt on one electrode and gas starts will be receipt on both electrodes of a cell.Processes which existence it is possible to explain only passage electrons through electrolyte are revealed also. |
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Keywords: Electrolysis of water.
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| 11 |
BALANCE OF ENERGY AND COMPONENTS OF VOLTAGE DURING THE ELECTROTECHNICAL MODIFICATION OF PHYSICOCHEMICAL PARAMETERS OF WATER
Authors: Stiopka O.G.
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Abstract: The paper is dealing with results of theoretical and experimental investigations related to the balance of energy and voltage distribution in units for electrochemical units for water treatment. The electrical energy conversion mechanism in electrochemical units equipped with ionic selective membrane is analyzed. The obtained results could be used for design of electrochemical units for the water conditioning for diverse technological processes in agriculture and biotechnology. |
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Keywords: Water conditioning.
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| 12 |
DUAL INVERTER-FED DRIVES WITH THE SYNCHRONISED MULTILEVEL VOLTAGE WAVEFORMS
Authors: V.Oleschuk, Alexandr Sizov ,Alexandar M. Stankovic ,Evgeni Yaroshenko ,
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Abstract: This paper presents results of investigation of dual inverter-fed open-end winding induction motor electric drive systems, controlled in accordance with the algorithms of novel methodology of synchronized vector modulation. Simulations give the behavior of the proposed techniques of synchronized modulation. |
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Keywords: Open-end winding induction motor electric drives; dual voltage source inverters; synchronized vector modulation.
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| 13 |
SOME PROBLEMS OF AUTOMATIC CONTROL OF DEFECTS OF GLASSWORKS
Authors: Rozhkov S.A., Brazhnic D.A., Serov A.V.,
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Abstract: It is performed analysis of existing systems for checking a quality of glass products with reference to problems of automation of checking of quality of finished products. There are brought results of experimental studies of the model of the system for quality control with the optical sensor. |
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Keywords: Glass articles, quality, optical sensors
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| 14 |
THE MATHEMATICAL MODEL REALIZATION ALGORITHM OF HIGH VOLTAGE CABLE
Authors: Tirsu M.S.,
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Abstract: Abstract. At mathematical model realization algorithm is very important to know the account order of necessary relations andhow it presents. Depending of loads or signal sources connection in selected points of mathematical model its very important toknow as to make the equations in this point that it was possible to determine all unknown variables in this point. The number ofequations which describe this point must to coincide with number of unknown variables, and matrix which describes factors atunknown variables should be square and have dimension equal to number of unknown variables. This article shows procedureand the order of programming of this mathematical model. |
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Keywords: mathematical model, high voltage cable, propagation process, current and voltage wave.
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| 15 |
THE MATHEMATICAL MODEL REALIZATION ALGORITHM OF HIGH VOLTAGE CABLE
Authors: Tirshu M. Institute of Power Engineering of Academy of Sciences of Moldova, mtirsu@cc.acad.md
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Abstract: At mathematical model realization algorithm is very important to know the account order of necessary relations and how it presents. Depending of loads or signal sources connection in selected points of mathematical model its very important to know as to make the equations in this point that it was possible to determine all unknown variables in this point. The number of equations which describe this point must to coincide with number of unknown variables, and matrix which describes factors at unknown variables should be square and have dimension equal to number of unknown variables. This article shows procedure and the order of programming of this mathematical model. |
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Keywords: mathematical model, high voltage cable, propagation process, current and voltage wave.
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