JSC Power Machines

Saint Petersburg, Russia

JSC Power Machines

Saint Petersburg, Russia

Time filter

Source Type

Petrenya Y.K.,JSC Power machines | Gaev V.D.,JSC Power machines
Power Technology and Engineering | Year: 2017

Modern approaches and methods for building new and modernizing existing steam turbines employed by JSC “Power machines” for technical renovation of power plants are discussed. New results are obtained from a computational study of the effect of the major structural parameters of the flow-through section (number of stages, rotation frequency, exhaust area of the final stage, changes in root bypasses, etc.) of a multistage steam turbine on its operating efficiency. © 2017 Springer Science+Business Media New York


Pan'kin V.M.,JSC Power Machines
Power Technology and Engineering | Year: 2017

Presented are formulas for determining the relative mass (damper/bearing mass ratio) and geometrical parameters of the damper, taking into account the dimensions of the space for mounting the damper on the turbogenerator bearing. © 2017 Springer Science+Business Media New York


Lisyanskii A.S.,JSC Power Machines | Gribin V.G.,National Research University Moscow Power Engineering Institute | Sakhnin Y.A.,JSC Urals Turbine Works | Fat'kov O.V.,JSC SCPE Moscow branch | And 2 more authors.
Power Technology and Engineering | Year: 2014

Practical experience with the introduction of honeycomb seals in the flow-through sections of 250-800 MW steam turbines with supercritical steam pressure is examined. The most widespread designs for shroud and end honeycomb seals used in the development of new turbine units are discussed, along with the modernization of existing steam turbine equipment. Test stand data on the relative flow rate and power characteristics of honeycomb, radial, and axial-radial seals are compared. Results are reported from thermal tests for evaluating the efficiency of installing honeycomb shroud seals in the high pressure cylinders of the T-250300-240 turbine units at the TÉTs-21 plant of JSC "Mosénergo" and the K-800-240-5 turbine units at the Perm GRÉS plant of JSC OGK-1. © 2014 Springer Science + Business Media New York.


Burmistrov A.,JSC Power Machines | Popov E.,NPP Ruselprom Electromash | Urganov A.,North West State Technical University | Gerasimov A.,JSC NIIPT | Esipovich A.,JSC NIIPT
44th International Conference on Large High Voltage Electric Systems 2012 | Year: 2012

UPS of Russia is a unique power system. Its operating conditions are quite different in comparison with power systems of other developed countries. In such operating conditions excitation control of synchronous generators plays not only technological role, but also is used as a powerful tool of voltage regulation and emergency automation for the security of reliability and survivability of power system. That's why in the power system of Russia special demands to the excitation control and in particular to the automatic voltage regulators and power system stabilizers are operating. According to the demands operating in UPS of Russia, all prototype models of excitation automatic controllers before installation in power system should pass the functioning tests according to the standard program approved by the key institutions of the power industry. In the report the conclusion about efficiency of an AVR certification technique applied in Russia, which ensures checking of a hardware representation of control law and allows to eliminate bugs of algorithmic and program character, is performed. The realized technique of certification of automatic excitation controllers in the conditions of physical model of power system and criteria of their efficiency estimation will be disputed during the meetings of IEC Maintenance Team No. 12 Excitation systems for synchronous machines (revision of the IEC 60034-16 series).


Pronin M.,JSC Power Machines | Shonin O.,Saint Petersburg Mining Institute | Vorontsov A.,JSC Power Machines | Gogolev G.,JSC Power Machines
Proceedings of the 2011 14th European Conference on Power Electronics and Applications, EPE 2011 | Year: 2011

The paper presents a multi-stage PWM-rectifier control system built up in abc-reference frame. The control algorithm takes into account the peculiarities of converter - machine/mains interactions during an operational cycle of the mining power shovel. The paper concludes by analyzing simulation results that have shown that proposed system ensures both bidirectional energy flow and stabilization of the DC-link voltage under condition that input voltage fluctuates because of weak mains characteristics. © 2011 EPE Association - European Power Electr.


Pronin M.,JSC Power Machines | Shonin O.,Saint Petersburg Mining Institute | Vorontsov A.,JSC Power Machines | Gogolev G.,JSC Power Machines
Proceedings of the 2011 14th European Conference on Power Electronics and Applications, EPE 2011 | Year: 2011

The paper presents a variable speed drive for pump-storage plant applications. A reversible turbine is energized by a double-fed induction machine (DFIM) exited on the rotor side with a cascaded frequency converter made up of M single-phase cells. The DFIM is started up as a synchronous machine by means of a CSI on the stator side and a VSI on the rotor side. An emphasis is placed on the control system aimed at the plant active and reactive power regulation. In order to balance out currents of the transformer secondary windings feeding single-phase active rectifiers, a phase disposition PWM strategy has been modified by introducing a consecutive cycling step-wise displacement of triangular wave offsets within a saw tooth period consisting of M triangle wave periods. The paper concludes by analyzing start-up responses and performance characteristics of the system in sub- and over-synchronous modes of operation. © 2011 EPE Association - European Power Electr.


Pan'kin V.M.,JSC Power Machines
Power Technology and Engineering | Year: 2015

Formulas for calculating the dimensions of a dynamic low-frequency vibration damper are derived. The damper is designed as a circularly curved thin-walled plate. Bench tests demonstrated that the damper effectively reduces the amplitude of vibrations of the bearing of a high-power turbine-generator set in two directions simultaneously. © 2015 Springer Science+Business Media New York


Verkhovtsev D.A.,JSC Power Machines | Gulai S.A.,JSC Power Machines
Power Technology and Engineering | Year: 2016

A method of detecting interturn short-circuits in the rotor winding by analyzing the magnetic field in the stator-to-rotor gap of a hydrogenerator is discussed. For the purpose of theoretical justification, the magnetic field is analyzed numerically using the finite-element method in the cases of presence and absence of short-circuited turns in the rotor winding. The numerical results are compared with experimental data for a 640 MW hydrogenerator. © 2016 Springer Science+Business Media New York


Ivanov S.A.,JSC Power Machines' | Tsvetkov K.O.,JSC Power Machines'
Power Technology and Engineering | Year: 2015

Based on many years of successful experience in developing and operating supercritical steam turbines with powers of 300 - 1200 MW and an analysis of advances in competing ultrasupercritical turbines, the firm JSC “Power Machines” has developed a 660 MW ultrasupercritical steam turbine. The basic engineering solutions applied to the model K-660-26, 5 turbine will be used to build a series of 500 - 1200 MW turbines with ultrasupercritical steam parameters. © 2015 Springer Science + Business Media New York.


Petrenya Y.K.,JSC Power Machines | Antonyuk O.V.,JSC Power Machines | Gavrilov S.N.,JSC I. I. Polzunov Scientific & Development Association on Research and Design of Power Equipment
Power Technology and Engineering | Year: 2016

The objective of this study is to give an understanding of how the natural frequencies and modes of the end-winding components in high-power turbogenerators can be determined. Results from an analysis of various methods are presented, and the main factors that hamper the computation of the natural frequencies with accuracy required for practical purposes are identified. Finite-element 3D modeling was performed to determine the natural frequencies of the outputs and a part of the stator bus ring. It is shown that the calculated frequencies are strongly dependent on the accuracy of modeling the boundary conditions. To improve the accuracy of numerical modeling, it is necessary to use bench and full-scale test data. © 2016 Springer Science+Business Media New York

Loading JSC Power Machines collaborators
Loading JSC Power Machines collaborators