The paper considers formers of orthogonal components with even number read-out and also investigates their frequency and dynamic properties.

The paper contains systemization of principles and methods for parameter compensation of power lines in power system networks.

The paper considers problems pertaining to quality control and analysis of electric power in networks of 1 kV and higher. It has been shown that in addition to periodical inspection of voltage transformers it is necessary to make diagnosis of their frequency characteristics. The paper proposes standards on frequency characteristics of voltage transformers and an automated method which has been tested in respect of real objects. The method makes it possible to execute diagnosis of frequency characteristics of voltage transformers directly on site of their operation and simultaneously with an inspection process.

 The proposed new method for distribution of reactive load between generators of electric power stations serves to ensure higher stability. The paper has determined on the basis of calculations pertaining to steady-state and transitional conditions that application of the given method leads to significant higher safety factor of static stability for active power and increases   limit clearing time of a short circuit.

The paper contains an approximate evaluation of solar and wind energy potential in Vietnam. Possible energy generation using non-conventional energy sources is cited for a number of regions in Vietnam.

The paper considers designing principles of operational space continuous heating and heat-treating furnaces at mechanical engineering, automotive and tractor enterprises in theRepublicofBelarus. A role of temperature chart on heating metallic charge while evaluating specific expenses of organic fuel in heating and heat-treating furnaces of mechanical engineering, automotive and tractor industries.

 

The paper presents a criteria dependence for calculation of steam jet characteristics which is blown in cold water. Evaluations have been carried out and relations of technological and geometrical characteristics of steam-water injectors have been determined in the paper. The paper gives dependence evaluation of acoustic overpressure value and characteristic frequencies of injector’s «vibro-activity».

Regularities on destruction of a conducting non-magnetic jet have been determined within  the limits of magnetic hydrodynamics model when the jet was subjected to longitudinal and azimuthal magnetic fields. The obtained regularities of the process makes it possible to apply them efficiently for controlling parameters of metallurgical processes and metal-transfer process at welding.

The paper studies problems of linearized dynamic models intended for synthesis of automatic temperature control systems and vacuum depth in vacuum evaporators. А single-casing vacuum evaporator plant is considered as an object of automatic control. Disturbance input channels are discerned and transfer functions permitting to determine laws of temperature and vacuum regulation and optimum parameters for setting automatic regulators used for various operational modes of vacuum-evaporator plants are obtained on the basis of the executed analysis.

he paper considers problems in respect of reaching furnace manifold mode, movement along manifold and descent from it. An example is given how to minimize a scale value.

The paper describes method for reduction of NO_x emissions by means of burning fuel with moderate residual incomplete combustion. Experimental results at two boilers are given in the paper.

The paper considers an influence of gas-air path aerodynamic resistance for a gas-turbine plant, barometric pressure, air moisture and outside air temperature on parameters, efficiency and characteristics of electric power plants with gas-turbine and combined-cycle sets. Calculations and analysis have been executed for Alstom GT13E2 gas-turbine which is included in composition of Steam Gas Plant-230 at the Minsk Thermal Power Plant No.3.