scholarly journals Improvement of energy efficiency of agricultural enterprises through the survey of high-voltage transmission lines using unmanned aerial vehicles

2021 ◽  
Vol 845 (1) ◽  
pp. 012156
Author(s):  
A Y Astapov ◽  
I P Krivolapov ◽  
D V Akishin ◽  
A S Gordeev ◽  
A A Naydenov
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Transmission Lines ◽  
Power Transmission ◽  
Power Transmission Lines ◽  
Reliability Factor ◽  
Overhead Lines ◽  
Agricultural Enterprises ◽  
Aerial Vehicles ◽  
Order Of Magnitude ◽  
The Cost

Abstract The paper studies the reliability of transmission lines of Michurinsk district electric lines in Tambov Region. It evaluates the quality of overhead power transmission lines in the support-insulator-wire system and determines the reliability factor of overhead lines. The paper proposes methodological approaches to the survey of power transmission lines using unmanned aerial vehicles. Their use seems quite promising and profitable, since the cost of such work is an order of magnitude lower.

scholarly journals Allocation of 0.4 kV PTL Sectionalizing Units under Criteria of Sensitivity Limits and Power Supply Reliability

2021 ◽  
Vol 11 (24) ◽  
pp. 11608
Author(s):  
Alina Vinogradova ◽  
Alexander Vinogradov ◽  
Vadim Bolshev ◽  
Andrey Izmailov ◽  
Alexey Dorokhov ◽  
...  
Keyword(s):  
Transmission Lines ◽  
Power Supply ◽  
Power Transmission ◽  
Short Circuit ◽  
Reducing Power ◽  
Power Transmission Lines ◽  
Electrical Networks ◽  
The Cost ◽  
The Impact ◽  
Supply Reliability

Sectionalizing 0.4 kV power transmission lines (PTL) improves power supply reliability and reduces electricity undersupply through the prevention of energy disconnection of consumers in the event of a short circuit in the power line behind the sectionalizing unit (SU). This research examines the impact of sectionalizing on power supply reliability and reviews the literature on sectionalizing unit allocation strategies in electrical networks. This paper describes the experience of the use of sectionalizing units with listing strengths and weaknesses of adopted technical solutions and describes the new structure of sectionalizing units. A new methodology is proposed, whereby there are two criteria for allocating SU in 0.4 kV power transmission lines. The first criterion is the sensitivity limits against single-phase short circuits used for calculating the maximum distance at which SU can be installed. The second criterion is power supply reliability improvement, evaluating the cost-effectiveness of installing sectionalizing equipment by reducing power supply outage time. The established methodology was put to the test on an actual electrical system (Mezenka village, Orel area, Russia), which demonstrated that the installation of a sectionalizing unit paid off.

scholarly journals Economic aspects of ensuring the capacity adequacy of electric power systems

2018 ◽  
Vol 58 ◽  
pp. 01010 ◽  
Author(s):  
Nikolay Belyaev ◽  
Andrey Egorov ◽  
Nikolay Korovkin ◽  
Vladimir Chudny
Keyword(s):  
Power Systems ◽  
Electric Power ◽  
Transmission Lines ◽  
Computational Models ◽  
Power Transmission ◽  
Present Report ◽  
Electric Power Systems ◽  
Power Transmission Lines ◽  
Engineering Measures ◽  
The Cost

The present report deals with economic issues of selecting means ensuring the capacity adequacy of electric power systems. Cost analysis of various engineering measures ensuring the capacity adequacy has been performed, they are as follows: construction of margin generating capacities, erection of new power transmission lines or increase of transmission capacity of existing power lines. The cost-based analysis has been conducted following investment programs and regulatory acts in place. Recommendations on developing computational models of power systems have been given based on the results obtained in order to assess the capacity adequacy indices with account made for the cost of various engineering measures to be taken for their improvement.

Optimization of Helium Refrigerators for Superconducting Power Transmission Lines in Terms of Cost and Reliability

1977 ◽  
Vol 99 (3) ◽  
pp. 551-557 ◽  
Author(s):  
F. J. Kadi ◽  
R. C. Longsworth
Keyword(s):  
Transmission Lines ◽  
Power Transmission ◽  
Minimum Cost ◽  
Power Transmission Lines ◽  
The Cost ◽  
Helium Refrigerator

Helium refrigerators for superconducting power transmission lines are optimized in terms of the minimum cost required to achieve a specified level of reliability. This paper summarizes the cost and reliability of large helium refrigerator components as determined from a survey of existing refrigerators, compressor and expander studies, and an analysis of Air Products unattended standard nitrogen plants. These data are used to analyze the cost and reliability of several alternate refrigerator designs.

scholarly journals A Thermal Rating Calculation Approach for Wind Power Grid-Integrated Overhead Lines

Energies ◽  
2018 ◽  
Vol 11 (6) ◽  
pp. 1523 ◽  
Author(s):  
Mengxia Wang ◽  
Mingqiang Wang ◽  
Jinxin Huang ◽  
Zhe Jiang ◽  
Jinyan Huang
Keyword(s):  
Power Systems ◽  
Wind Power ◽  
Transmission Lines ◽  
Power Flow ◽  
Power Transmission ◽  
Wind Farms ◽  
Utilization Efficiency ◽  
Power Transmission Lines ◽  
Overhead Lines ◽  
Wind Power Integration

Currently, the rapid increase in wind power integration in power systems is resulting in an increasing power flow in the grid-integrated power transmission lines of wind farms. The wind power curtailment caused by the current limits (thermal ratings) of the wind power integration overhead lines (WPIOLs) is becoming increasingly common. Aiming at this issue, the influence of conductor heating on the loss of tensile strength (LOTS) and sag of a WPIOL was analyzed in this paper. Then a decision model is proposed for the thermal ratings of WPIOLs, which regards the minimized wind power curtailment as objective and introduces permissible cumulative LOTS and sag of the conductor as constraints. Based on this model, the thermal rating for a WPIOL can be decided to ensure the expected service life of the conductor and safe clearance. In addition, case studies are used to demonstrate that the proposed approach is capable of improving the conservatism of conventional thermal rating calculation and reducing the wind power curtailment by improving the utilization efficiency of WPIOLs.

Innovative 10–110 kV Compact Controlled Overhead Lines

2018 ◽  
pp. 310-326
Author(s):  
Vitali Mihail Postolati ◽  
Elena Vitalii Bicova
Keyword(s):  
Transmission Lines ◽  
Power Transmission ◽  
Fold Increase ◽  
Weather Conditions ◽  
Power Transmission Lines ◽  
Overhead Lines ◽  
Transfer Unit ◽  
Fold Reduction ◽  
Equal Capacity ◽  
Compact Design

This chapter describes how the implementation of compact overhead lines equipped with FACTS devices, including phase angle regulator settings (compact controlled OHL), appears to be one of the most effective ways of power grid development. Compact-design OHL equipped with FACTS have many improvements over previous devices. The devices provide a 1.2-1.6-fold increase in OHL capacity without raising their voltage class. A 1.5–2-fold reduction in the area of land allocated for OHL with equal capacity. An electromagnetic field reduction in the external space, decreasing environmental effects and the impact on people. A 15–30% decrease of total costs per power transfer unit. The total energy loss reduces the power system, increasing OHL mechanical strength under severe weather conditions. Results of the comprehensive research and development in relation to 10–110 kV compact controlled power transmission lines together with theoretical bases, substantiation, and methodological approaches to their practical application and design experience are given in the chapter.

scholarly journals System for monitoring the parameters of overhead power lines

2021 ◽  
Vol 2086 (1) ◽  
pp. 012059
Author(s):  
V A Listyuhin ◽  
E A Pecherskaya ◽  
O A Timokhina ◽  
V V Smogunov
Keyword(s):  
Transmission Lines ◽  
Power Supply ◽  
Power Transmission ◽  
The State ◽  
Measuring System ◽  
Power Lines ◽  
Power Transmission Lines ◽  
Electrical Networks ◽  
Overhead Lines ◽  
Overhead Power Transmission Lines

Abstract The analysis of disturbances (accidents) on overhead power transmission lines and methods and means of the overhead power transmission lines parameters monitoring was carried out. It is shown that the most promising direction for ensuring the required indicators of the reliability of power supply is the development and implementation of information and measurement systems at the facilities of the power supply network complex. The structure of an intelligent information-measuring system for measuring parameters characterizing the state of wires, external factors influencing the state of power lines is proposed. The proposed decision support system will make it possible to promptly identify defective sections of overhead lines, increase the level of technological management of electrical networks.

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