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Samorodov Yu.N.,R and nter for Power Engineering
Power Technology and Engineering | Year: 2010

The results of research on the causes, forms and aftereffects of the occurrence of defects and damage to the stators and rotors of generators are presented. The processes of ageing of the materials of machine parts are analyzed. A list of the developments of methods and apparatus for generator flaw detection is presented. © 2010 Springer Science+Business Media, Inc. Source


Lyubarskii Yu.Ya.,R and nter for Power Engineering | Redin A.G.,Moscow Power Engineering Institute
Power Technology and Engineering | Year: 2012

It is shown how a computer-aided maintenance scheduling system can be used to coordinate maintenance of high-voltage transmission lines and outages of NPP units. The paper describes the stages of processing requests for maintenance of power transmission lines, coordination of these requests with the outages of NPP units, and final scheduling followed by plotting of Gantt charts. © 2012 Springer Science + Business Media, Inc. Source


Vdovikov A.G.,JSC Electrotechnical Systems 1 | Gorodov V.V.,JSC Electrotechnical Systems 1 | Samorodov Yu.N.,R and nter for Power Engineering
Power Technology and Engineering | Year: 2012

It is shown that, for standard tests of the windings of electrical machines subjected to the action of a test voltage, the insulation of the frontal parts and frontal windings inside the phases, and also the positions where the lead rods are connected to the busbars and the winding retaining rings, in practice are not subjected to the action of the test voltage. Moreover, when testing the insulation of the windings with a test voltage, charring of the breakdown channel with destructive lamination of the dielectric barrier of the insulation and the penetration of soot particles along the layers formed occurs. These drawbacks will be completely eliminated by using the KVIS-40 equipment, which enables nondestructive testing of the insulation to be effectively carried out using an increased rectified voltage. © 2012 Springer Science + Business Media, Inc. Source


Ilushin P.V.,JSC IDGC Holding | Gurevich Yu.E.,R and nter for Power Engineering
44th International Conference on Large High Voltage Electric Systems 2012 | Year: 2012

Dispersed generation implies such allocation of low-power stations at which they are connected to energy consumption nods. This allows to reduce the currents in distribution network, which provides significant economic benefits at the growth of energy consumption. The report draws attention to the following aspects of abnormal and emergency operating modes of the generation units: potential damage of the unit under close external short circuit; disconnections of gas-turbine units with free power turbine while nominal load dropping; inefficient work of the unit during standalone mode. Source


Samorodov Yu.N.,R and nter for Power Engineering
Power Technology and Engineering | Year: 2011

The results of an analysis of the processes occurring at the sliding contact between the brush and contact ring of generators are presented. It is shown that arc and spark discharges are one of the main causes of increased wear on brushes and rings. It is established that arc discharges occur when there are breaks in the brush current circuit while spark discharges occur due to overvoltages in the rotor winding circuit. © 2011 Springer Science+Business Media, Inc. Source

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