scholarly journals Composite materials made narrow base 110 kV overhead suspension tower for the port terminals approach

2020 ◽  
pp. 175-179
Author(s):  
Г.А. Данилов ◽  
Ю.М. Денчик ◽  
Е.В. Иванова ◽  
Б.В. Палагушкин ◽  
М.Н. Романов ◽  
...  
Keyword(s):  
Composite Materials ◽  
Regulatory Framework ◽  
Structural Elements ◽  
Overhead Line ◽  
Climatic Effects ◽  
Mechanical Calculation ◽  
Overhead Lines ◽  
Metal Parts ◽  
Technical Solutions ◽  
Narrow Base

В работе представлена разработка промежуточной опоры для ультракомпактных ВЛ 110 кВ. Технические решения приводятся на примере реконструкции конкретного объекта – ВЛ 110 кВ. Работа выполнена в соответствии с «Техническим заданием на разработку специальных технических условий с использованием провода с защитной изоляцией для воздушных линий электропередачи на напряжение 110 кВ марки СИП-7 с целью уменьшения охранной зоны ВЛ». Выполнен анализ характеристик существующих промежуточных опор типа ПБ 110-4 и промежуточной опоры ВЛ 110 кВ с применением защищённого провода СИП-7. Выбран тип провода для проведения реконструкции линии. Осуществлён расчёт нагрузок на промежуточную опору из композитных материалов типа ПК 110-2 ПЗИ с учётом требований существующей нормативной базы, механический расчёт промежуточной композитной опоры, учитывающий различные климатические воздействия на провода и изоляторы. Предложены конструктивные элементы обеспечения заземления металлических частей опор из композитных материалов и элементы крепления самонесущих изолированных проводов к траверсам композитной опоры. This paper presents the development of suspension tower for ultra-compact 110 kV overhead lines. Technical solutions performed are based on example of reconstruction of 110 kV overhead line. The research aimed to reduce the security zone of overhead lines by using СИП-7 insulation type cable. The analysis of the characteristics of the existing suspension towers of the ПБ 110-4 type and 110 kV overhead line tower with the use of protected wire SIP-7 is carried out. Authors made the calculation of the loads on the suspension tower made of composite materials of the ПК 110-2 ПЗИ type, taking into account the requirements of the existing regulatory framework, they also carried out the mechanical calculation of the tower, considering various climatic effects on the wires and insulators. Structural elements of providing grounding of metal parts of tower made of composite materials and fastening elements of self-supporting insulated wires to the cross-arms of a tower are proposed.

scholarly journals MECHANICAL CALCULATION OF FLEXIBLE WIRES WHEN A CONCENTRATED LOAD IS BEING REPLACED WITH A DISTRIBUTED ONE TAKING INTO ACCOUNT THE STRUCTURAL ELEMENTS Y.V. BLADYKO1)

2018 ◽  
Vol 61 (3) ◽  
pp. 220-234 ◽  
Author(s):  
Y. V. Bladyko
Keyword(s):  
Parametric Method ◽  
Climatic Conditions ◽  
Structural Elements ◽  
Concentrated Loads ◽  
Concentrated Load ◽  
Mechanical Calculation ◽  
Overhead Lines ◽  
Concentrated Forces ◽  
The Wire ◽  
Electrical Apparatus

In the mechanical calculation of the flexible wires of substations and overhead lines, sags and tension are determined in various climatic conditions. Concentrated loads from spacers, barrier balls, stubs, taps to electrical apparatus and other elements are replaced with a load distributed over the span. On the example of a span with tension insulator springs, the action of concentrated loads on the wire is considered, the error is determined when the concentrated forces are replaced with a load one that is uniformly distributed along the span. It is shown that concentrated loads cannot be replaced with distributed ones by simple division of total loads by the span length, since this might result in completely incorrect findings. A relationship is established between the coefficient of the increase of the sag, the coefficient of concentrated forces, the coefficient that takes into account the presence of tension insulator springs, and the angle of inclination of the span. With wind load and the presence of taps to electrical apparatus, the deviations of the wire in two planes may be calculated independently of each other if the forces concentrated in these planes are known. A decrease in the error is shown with an increase in the number of small concentrated forces. The influence of the angle of inclination of the span and the presence of tension insulator springs on calculating the deviations of the wires of substations and overhead lines is assessed. A more accurate calculation of mechanical tensions and sags is possible with the use of a vector-parametric method for calculating the flexible bus of switchgears and wires of overhead lines, where the design model of wires in the form of a flexible elastic thread is used, taking into account the spatial disposition of all structural elements.

The choice of optimum cross section for overhead line by economic intervals' method

2011 ◽  
Vol 28 (1) ◽  
pp. 37-42 ◽  
Author(s):  
Svetlana Guseva ◽  
Lubov Petrichenko
Keyword(s):  
Cross Section ◽  
Current Density ◽  
Uncertain Information ◽  
Overhead Line ◽  
Market Conditions ◽  
Overhead Lines ◽  
Mathcad Software

The choice of optimum cross section for overhead line by economic intervals' methodIn this paper an approach to choosing the optimum cross section for overhead line in conditions of incomplete and uncertain information is considered. The two methods of such choice are presented: method of economic current density and economic intervals' method. The correction of the economic intervals method is offered under market conditions of costs. As example 20 kV and 110 kV overhead lines with aluminum, copper and ferroaluminum wires are selected. Universal nomograms with different standard cross section are calculated and constructed. The graphics using Mathcad software are offered.

Wood-Glass Fiber Composite Materials in Structural Elements of Tram Tracks

2019 ◽  
Vol 777 (12) ◽  
pp. 73-77
Author(s):  
B.A. BONDAREV ◽  
◽  
T.N. STORODUBTSEVA ◽  
D.A. KOPALIN ◽  
S.V. KOSTIN ◽  
...  
Keyword(s):  
Composite Materials ◽  
Glass Fiber ◽  
Fiber Composite ◽  
Structural Elements ◽  
Glass Fiber Composite ◽  
Fiber Composite Materials

Study on Reasons of the Falling of the Overhead Line Based on Fault Tree Analysis

2013 ◽  
Vol 325-326 ◽  
pp. 590-593
Author(s):  
Fei Xiang Wei ◽  
Yang Song ◽  
Xiao Xu Ma ◽  
Ying Qian
Keyword(s):  
Power System ◽  
System Reliability ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Power System Reliability ◽  
Overhead Line ◽  
Qualitative And Quantitative Analysis ◽  
Tree Analysis ◽  
Overhead Lines ◽  
Qualitative And Quantitative

The transmission line is an important part of the power system, its reliability will directly affect the reliability of the power system. The reliability of the overhead line plays a crucial role for the power system reliability. This paper analyze the reasons of the falling of the overhead lines, establish a fault tree, and make qualitative and quantitative analysis of the fault tree.

The concept of development of the Contract System of the Ministry of Internal Affairs of Russia as a tool for effective use of budget funds and ensuring competition in the state procurement market

2021 ◽  
pp. 76-87
Author(s):  
A. A. Tsviliy-Buklanova
Keyword(s):  
Public Procurement ◽  
The State ◽  
Regulatory Framework ◽  
Structural Elements ◽  
Departmental Level ◽  
Internal Affairs ◽  
Effective Use ◽  
And Control

The article is devoted to the relevance of the development and adoption of the Concept for the development of the Contract System of the Ministry of Internal Affairs of Russia in order to increase the efficiency of using budget funds and eliminate corruption risks in the implementation of public procurement. The regulatory framework of federal and departmental level was considered, attention was paid to practical aspects of procurement of goods, works and services for the needs of internal affairs bodies, issues of regulation and control are reflected. Structural elements of the Concept, ways to improve the Contract System of the Ministry of Internal Affairs of Russia are proposed.

METHOD OF DOMAIN ONTOLOGY AUTOMATED REPLENISHMENT FOR THE SUPPORT OF NEW TECHNICAL SOLUTIONS SYNTHESIS. PART I

2021 ◽  
pp. 3-12
Author(s):  
S. S. Vasiliev ◽  
D. M. Korobkin ◽  
S. A. Fomenkov
Keyword(s):  
Language Processing ◽  
Domain Ontology ◽  
Russian Language ◽  
Information Support ◽  
Structural Elements ◽  
Technical Object ◽  
Main Claim ◽  
Shallow Parsing ◽  
Technical Solutions ◽  
Alternative Designs

To solve the problem of information support for the synthesis of new technical solutions, a method of extracting structured data from an array of Russian-language patents is presented. The key features of the invention, such as the structural elements of the technical object and the relationships between them, are considered as information support. The data source addresses the main claim of the invention in the device patent. The unit of extraction is the semantic structure Subject-Action-Object (SAO), which semantically describes the constructive elements. The extraction method is based on shallow parsing and claim segmentation, taking into account the specifics of writing patent texts. Often the excessive length of the claim sentence and the specificity of the patent language make it difficult to efficiently use off-the-shelf tools for data extracting. All processing steps include: segmentation of the claim sentences; extraction of primary SAO structures; construction of the graph of the construct elements f the invention; integration of the data into the domain ontology. This article deals with the first two stages. Segmentation is carried out according to a number of heuristic rules, and several natural language processing tools are used to reduce analysis errors. The primary SAO elements are extracted considering the valences of the predefined semantic group of verbs, as well as information about the type of processed segment. The result of the work is the organization of the domain ontology, which can be used to find alternative designs for nodes in a technical object. In the second part of the article, an algorithm for constructing a graph of structural elements of a separate technical object, an assessment of the effectiveness of the system, as well as ontology organization and the result are considered.

scholarly journals Optimizing of system "column-cfrp lamellas" with the strengthening of civil structures

2021 ◽  
Vol 9 (1) ◽  
pp. 1-5
Author(s):  
Irina Mayackaya ◽  
Batyr Yazyev ◽  
Anastasia Fedchenko ◽  
Denis Demchenko
Keyword(s):  
Reinforced Concrete ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Concrete Structures ◽  
Polymeric Composite ◽  
Concrete Columns ◽  
Reinforced Concrete Structures ◽  
Structural Elements ◽  
Civil Structures ◽  
Concrete Elements

Reinforced concrete elements of structures in the form of columns, beams, ceilings are widely used in the construction of buildings and structures of industrial and civil construction. In most cases, the columns serve as supports for other building elements, for example, crossbars, slabs, girders, beams. One of the cycles of the work of reinforced concrete structures is the state of their repair and reconstruction, including the stages of strengthening the elements. There is a problem of strengthening of reinforced concrete columns. The article deals with the issue of reinforcing columns and other structural elements having a cylindrical surface, with polymeric composite materials in the form of carbon fiber lamellae. The use of composite materials allows to increase the service life and strength of reinforced concrete structures used in construction.

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