Overhead Lines
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Overhead Lines
Why are Overhead Power Transmission Lines Not Insulated?
Why Use Bare Conductors for Overhead Transmission Lines Instead of Insulated Conductors? You may have noticed that we use insulated cables for underground power transmission, as well as in industrial…
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Power System
Comparison Between Overhead & Underground Transmission Systems
Comparison Between & Advantages of Overhead and Underground Transmission Systems Following are the main differences and comparison between underground and overhead power transmission and distribution in a typical power system.…
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Overhead Lines
Types of Insulators used in Power Transmission and Overhead Lines
Insulators: Types, Properties, Material, Causes of Failure and Applications The insulators or line insulators are used in overhead transmission and distribution lines. The overhead conductors are supported on the poles…
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Power System
Types of HVDC Systems and MTDC Configurations
Types of HVDC System Configurations & “MTDC” Multi Terminal DC Systems The High voltage direct current or shortly known as HVDC is an efficient way to transmit power over long…
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Power System
Advantages of HVDC over HVAC Power Transmission
What are the Advantages of HVDC over HVAC? The electricity we consume travels very long distances before reaching us. The power generating stations, often in remote areas supply power that…
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Protection
Difference between Lightning Arrester and Surge Arrester
Difference between Surge Arrester, Surge Suppressor, Lightning Arrester and Lightning Rod Different terms used for arresters are sometimes confusing even professional engineers and electricians use them interchangeably. We will discuss…
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Questions - Answers
Why is Electric Power Transmission Multiple of 11 i.e 11kV, 22kV, 66kV etc?
Why are all the Transmission Line Voltages Multiple of 11kv? Not 10kV? Obliviously, this is an interview type question for electrical engineers especially related to power engineering. Now, we are…
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Overhead Lines
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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Protection
All About Electrical Protection Systems, Devices And Units
Electrical Protection Units And Systems This is a long and descriptive article on different types of protection for electrical systems and networks. In this article, you will be able to…
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Circuit Analysis
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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