Electro-Mechanical Design and Creep Analysis of Proposed Enclosure for Flexible Gas Insulated Line Regarding Subsurface Metropolitan Applications of High-Voltage Transmission Lines

Land shortage in metropolitan vicinities entails subsurface implementation of power transmission lines (PTLs) which demand structural flexibility, as well as substantial load bearing capability. Thus, development of a flexible gas insulated transmission line (FGIL) necessitates its strength degradat...

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Bibliographic Details
Published in:Electronics (Basel) 2019-09, Vol.8 (9), p.929
Main Authors: Junaid Alvi, Muhammad, Izhar, Tahir, Ali Qaiser, Asif, Anjum, Awais, ul Hassan, Rizwan
Format: Article
Language:English
Subjects:
Aging
Algorithms
Cables
Conductors
Corrosion
Crack propagation
Creep analysis
Electrical loads
Electrodes
Enclosures
Flexibility
Gas pressure
Gases
Impact strength
Live loads
Mechanical drives
Metropolitan areas
Polyethylene
Power lines
Power transmission
Simulation
Static loads
Structural strength
Synergistic effect
Tensile strength
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Summary:Land shortage in metropolitan vicinities entails subsurface implementation of power transmission lines (PTLs) which demand structural flexibility, as well as substantial load bearing capability. Thus, development of a flexible gas insulated transmission line (FGIL) necessitates its strength degradation analysis, regarding the synergistic effect of aging and mechanical loadings. Moreover, correlation of conductor and enclosure dimensions of FGIL apropos field distribution, requires careful consideration regarding their dimensional specifications. In this research, a comprehensive electro-mechanical design is performed for the proposed flexible-thermoplastic-enclosure of a 132 kV FGIL by considering the synergistic impact of time and temperature-based aging, along with the effect of external and internal loadings, such as dead load, live load and internal gas pressure. Additionally, a recursive design algorithm for the proposed scheme regarding electro-mechanical aspects, along with aging perspectives is developed. Comparative analysis of proposed and conventional schemes regarding electro-mechanical and aging aspects revealed that the proposed enclosure exhibits the required structural strength, as well as flexibility for trenchless subsurface application of FGILs in metropolitan areas.
ISSN:2079-9292
2079-9292
DOI:10.3390/electronics8090929