Vul'fovich N.A.,JSC Lenhydroproject |
Potekhin L.P.,JSC Lenhydroproject
Power Technology and Engineering | Year: 2017
Some aspects of determining the temperature field of the Sayano-Shushenskaya dam are considered. The results of a finite-element analysis of the thermal components of the radial displacements of the dam crest over the period from 1989 to 2015 are presented. A classification of thermal states of the dam is proposed. Headwater level limits at intermediate stages of reservoir filling are found to ensure the integrity of grouted zones in the upstream face and base of the dam. Criteria for choosing an operating rule curve for the reservoir depending on the thermal state of the dam are proposed © 2017 Springer Science+Business Media New York
Kolosova G.S.,Saint Petersburg State University |
Lalin V.V.,Saint Petersburg State University |
Kolosova A.V.,JSC Lenhydroproject
Magazine of Civil Engineering | Year: 2013
The aim of the paper was to review the stress-strain state of an arch-gravity dam of the Sayano- Shushenskaya HPP, which has construction and contact joints. The problem is solved by finite element method using software package SOFiSTiK. The finite element model of the "dam - foundation - abutments" created at the department "Structural mechanics and theory of elasticity" of SPbSPU is described. Three-dimensional 8-nodal finite elements were used. Joints in the dam body were modeled by unilateral constraints. The schemes of unilateral constraints location in contact and construction joints are presented. To assess the correctness of the finite element model operation the calculated radial movements at the crest of the dam was compared with the field data. Satisfactory agreement of values confirms the correctness of modeling system behavior by the design scheme. According to the calculation results from the action of the hydraulic load we can conclude that account of the disclosure joints leads to a significant increase in the calculated stresses in the dam body.
Lashin A.V.,JSC Lenhydroproject |
Kozyrev A.V.,JSC Lenhydroproject
Power Technology and Engineering | Year: 2015
One of the most promising forms of developing the apparatus part of relay protection and automation devices is considered. The advantages of choosing programmable logic integrated circuits to obtain adaptive technological algorithms in power system protection and control systems are pointed out. The technical difficulties in the problems which today stand in the way of using relay protection and automation systems are indicated and a new technology for solving these problems is presented. Particular attention is devoted to the possibility of reconfiguring the logic of these devices, using programmable logic integrated circuits. © 2015, Springer Science+Business Media New York.
Bukhartsev V.N.,Polytechnic University of Mozambique |
Lavrov N.P.,Polytechnic University of Mozambique |
Frolova I.E.,Polytechnic University of Mozambique |
Togo I.,Polytechnic University of Mozambique |
And 2 more authors.
Power Technology and Engineering | Year: 2016
The paper presents the results of hydraulic studies of the model for the left-bank variant of the additional spillway in the Maina hydraulic installation performed with the aim of justification of the designed discharge capacity. Similarity criteria of hydraulic modeling and calculation results are given. © 2016 Springer Science+Business Media New York