Basic definations of transmission line

Here present the article about the basic definations of  transmission line



  • Alternating Current (AC) - Electric current in which the direction of the current's flow is reversed or alternated at 50Hz in the india.
  • Conductors (Power Lines) – Metal cables used for carrying electric current.
  • Corona – Electrical breakdown of the air near high voltage conductors into charged particles.
  • Current – The flow of electricity or the movement of electrons through a conductor typically measured in watts.
  • Direct Current (DC) – Electric current flows continuously in the same direction as contrasted with alternating current.
  •  Distribution Line – A line that carries electricity at lower voltages of 12kV to 44kV and is used to distribute power drawn from high-voltage transmission systems to end-use customers.
  • Electric & Magnetic Fields (EMF) – Invisible areas of energy, often referred to as radiation, that are associated with the use of electric power. EMFs fall into one of two radioactive categories – non-ionizing (low-level of radiation) or ionizing (high-level of radiation).
  • Electric Load – Electricity consumers, such as residences, businesses, and government centers that use electricity.
  • Electric Power Transmission – The process by which large amounts of electricity produced are transported over long distances for eventual use by consumers.
  • Energy – The amount of work that can be done by electricity, typically measured in kilowatt-hours (kWh) or megawatt- hours (MWh).
  • Foundation – System that transfers to the ground the various dead and live loads of the transmission structure and conductors.
  •  Generation – The production of electric energy. Fossil fuels, wind turbines, solar panels, and other technologies are used to generate electricity.
  • Insulators – Used to contain, separate, or support electrical conductors.
  • Interconnection – Points on a grid or network where two or more transmission lines are connected at a substation or switching station, or where one stage of the energy supply chain meets the next.
  •  Load Center – A particular geographical area where energy is used. Most commonly refers to an area within a utility’s service territory where energy demand is highest (i.e., cities, major industrial areas, etc.).
  •  National Electrical Safety Code (NESC) – The NESC is the U.S. standard of the safe installation, operation, and maintenance of electric power systems.
  • Power – Rate at which electricity does work. Measured in watts or kilowatts (kW) or megawatts (MW).
  • Rights-of-Way (ROW) – A legal land right, easement, set a side for the transmission line structure and conductors needed for clearances and maintenance activities.
  • Shield and Ground Wire – Wires used primarily for protection from lightning strikes and corresponding surges. 
  • Substation – A part of an electrical transmission system that transforms voltage from high to low, or the reverse.
  • Switching Station – A part of an electrical transmission system that ties two or more electric circuits together through switches, to permit a circuit to be disconnect, or to change the electric connection between circuits. 
  • Transmission Line – A line that carries electricity at voltages of 69kV or greater and is used to transmit electric power over relatively long distances, usually from a central generating station to main substations.
  • Transmission Structures – Used to keep high-voltage conductors (power lines) separated from their surroundings and from each other.
  • Voltage – Electric “pressure” measured in volts. Power systems are typically measured in 1,000s volts or kV.
  •  Watt – Unit of electrical power. 1MW is one million watts.


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