Overhead Lines
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Electrical Transmission Networks – EHV and HV Overhead Lines
Electrical Transmission Networks and Overhead Lines Generally, EHV and HV (High Voltage; 60 kV ≤ V < 150 kV, EHV: Extra High Voltage; V ≥ 150 kV) is used for…
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Electric Stress Control in Cable, Joints & Terminations
How to Control Electric Stress in Cable Joints & Terminations? Introduction Power cables are of great importance in power transmission and distribution systems. Terminations and joints are the basic accessories…
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Overhead Lines Protection – Faults and Protection Devices
Overhead Lines Faults & Protection in Power System Common Faults in Overhead Lines The most common causes of faults in overhead lines are: Aircraft and cars hitting lines and structures…
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HV And MV Switch Disconnectors And Isolators in Power System
HV/MV Switch Disconnectors And Isolators in Substation & Overhead Lines Introduction HV/MV Switch Disconnectors And Isolators High Voltage (HV) and Medium Voltage (MV)[1] installations require equipments to switching and/or isolating…
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Insulating And Dielectric Materials – Types, Properties & Applications
An Introduction to Insulating And Dielectric Materials Definition of Insulating and Dielectric Materials An electrical insulating material can be defined as the material that does not allow electric current to…
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Corona Effect and Discharge in Power Transmission Lines
A Comprehensive Guide about Corona Effect / Corona Discharge in Transmission Lines What is Corona Effect or Corona Discharge? When a low alternating potential difference is applied across two conductors…
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Short Circuit Currents And Symmetrical Components
Short Circuit Currents And Symmetrical Components (Manuel Bolotinha) Short Circuit Faults and Currents Short-circuits can occur phase-to-phase and phase-to-earth, mainly due to: Dielectric breakdown of insulating materials (ageing, severe overheating…
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