Open Access
Subscription Access
No 1(12) (2011)
GENERAL ISSUES RELATED TO RELIABILITY AND SAFETY OF THE POWER INDUSTRY
6-11 432
Abstract
Energy efficiency indices of Russia have been compared to those of other countries. Technical condition of the Russian power industry has been reviewed. The cost of electricity in Russia and abroad has been specified. The actual electrical power demand has been evaluated taking into account energy saving programs and the increase in installed capacity utilization factor for existing electric power stations. Specific proposals aimed at the improvement of the power generation capacities built in Russia have been put forward.
12-15 396
Abstract
The creation of the Russian, Belarusian, and Kazakh Customs Union requires improvement in relations between the countries in the sphere of technical regulation.
ECONOMIC PROBLEMS IN THE ENERGY SECTOR
16-18 353
Abstract
Various approaches to physical asset management of an energy generating company are considered. Methods of improving controllability and operational process efficiency have been identified.
19-20 408
Abstract
Estimations of power efficiency applied now are considered. The criterion of power efficiency, applicable for any equipment using at functioning change of a temperature field Is offered.
21-23 436
Abstract
The European sector of the natural gas spot market, conditions of its formation and development have been reviewed; natural gas spot price dynamics has been compared with Gazprom contract gas prices.
STAFF TRAINING
24-33 411
Abstract
Causes of accidents at electric power stations and electric grid companies have been reviewed. Power plant operator activity has been analyzed and the role of training simulators in the operator training has been defined. The reasons behind contemporary human potential development system lagging and approval schemes for personnel training technical facilities have been reviewed. A modern integrated system for power industry personnel training has been suggested.
ENGINEERING, RESEARCH AND CALCULATIONS
34-44 426
Abstract
Tasks for optimization of consumer power supply reliability are considered with this parameter being coordinated across all components of power supply system: generation, power transmission, distribution, and customer networks. Three economic criteria for the optimization are suggested: minimum integrated redundancy cost; maximum permissible volume of investments into reliability improvement in the conditions of limited resources; equality of relative increments in specific cost of reliability across the power system sectors. Economically feasible levels of reliability for power supply system sectors have been obtained.
45-49 387
Abstract
The results of the experimental research are analyzed for the following:
• sector nozzle consisting of stationary cooled blades,
• impeller corresponding to the midsection of rotor blade,
• high-pressure transonic stage.
The results of the experimental research confirmed the design data obtained in the first part of the article in relation to the feasibility of a high-pressure transonic stage within the variation range of parameter u/q = 0.4 – 0.5 for the efficiency factor ?t *= 0.87 – 0.89.
• sector nozzle consisting of stationary cooled blades,
• impeller corresponding to the midsection of rotor blade,
• high-pressure transonic stage.
The results of the experimental research confirmed the design data obtained in the first part of the article in relation to the feasibility of a high-pressure transonic stage within the variation range of parameter u/q = 0.4 – 0.5 for the efficiency factor ?t *= 0.87 – 0.89.
50-55 431
Abstract
The reasoning for a new asset estimation index for electricity distribution networks and the methodology for the actual reliability calculation are considered in functional interrelation with the motivation of the operating personnel to maintain the established reliability standards.
56-65 364
Abstract
The physical model of the vent process taking place during the operation of the axial-flow stage of a thermoelectric power station’s steam turbine under the modes with low steam volume flow rate has been suggested. The model was used as the basis for obtaining a universal mathematical relation for high-precision evaluation of ventilation losses within the turbine stage. The obtained relation allows correct evaluation of ventilation heating of the wheel space of a thermoelectric power station’s steam turbine.
OPERATING EXPERIENCE
66-70 664
Abstract
Designs and the principle of operation of separator-steam superheaters that are currently in use at the power units with ВВЭР-type reactors have been shown. Main design flaws of these apparatuses identified during their operation have been specified. The design of a separator-steam superheater for NPP-2006 suggested by the plant named after Ordzhonikidze (Podolsk), consisting of a cassette-type steam superheater with longitudinal finned pipes similar to those used in existing separator-steam superheaters has been presented. An alternative design of a separator-steam superheater for NPP-2006 developed at JSC “NPO CKTI”, featuring a steam superheater with transverse finned pipes has been presented. It is shown that with transverse finned pipes used in the steam superheater it is possible to make a considerable reduction in the apparatus size and weight.
