Power System

This page indexes every article on electricaleasy.com about power systems — generation, transmission, distribution, cables, insulators and economics — so you can find what you need in one place.

• Power plant
  How electricity is generated in power plants?
• Thermal power plant
  Sometimes also called a 'Steam power station'.
• Nuclear power station
  Heat energy is generated by a nuclear reaction called nuclear fission.
• Hydroelectric power plant
  Uses potential energy of the water stored in a large reservoir.
• Diesel power generator
  Uses a combination of a diesel engine and an electric generator.
• Comparison of power plants
  Different types of power plants compared on the basis of various factors.
• Solar power system
  How electricity is generated from the power of the sun?
• The future of solar energy in India
  Solar energy has emerged as the most viable and environment-friendly option for India.
• Wind energy
  Another clean and green way of generating electricity.
• Geothermal energy
  Using geothermal energy (heat) for generating electric power.
• Transmission system
  How electric power is transmitted from generating stations to load centers.
• Sag in transmission lines
  Calculation of sag in overhead transmission lines.
• Electrical power grid
  An interconnected network that delivers the generated power to the consumers.
• HVDC vs. HVAC
  Comparison of HVAC and HVDC transmission systems.
• String efficiency
  Potential distribution over a suspension insulator string and string efficiency.
• Underground cables
  Construction and classification of underground cables.
• Types of underground cables
  Detailed classification of underground cables.
• Laying of underground cables
  Different methods of underground cable installation.
• Locating underground cable faults
  Finding the exact location of a cable fault needs special techniques. Two of the popular techniques are...
• How underground cable locator works?
  How can you locate a fault when you don't know where the cable is?
• Methods of voltage control in power system
  Automatic voltage regulators, tap changing transformers, induction regulator, shunt reactor, shunt capacitor, synchronous condenser.

• Power factor
  What exactly is the Power factor?
• Power factor correction
  Causes of low power factor and methods to improve it.
• Variable loads on power system
  Load curves, connected load, average load, maximum demand etc.
• Economics of power generation - part 1
  Cost of electrical energy and formulae for determining it.
• Economics of power generation - part 2
  Methods for calculating annual depreciation costs.
• Electricity tariff
  Tariff is the rate at which consumers are charged for using electricity.
• Economic choice of transmission voltage
  How to choose an economical transmission voltage?
• Economic choice of Conductor size
  Cost of a conductor also depends on its cross-sectional diameter.
• Types of electrical loads
  Electrical loads can be classified according to various different factors.
• Types of Overhead conductors
  AAC, AAAC, ACSR, ACAR - Aluminium has been widely adopted as the material for overhead conductors.
• Corona discharge
  What is corona effect in a transmission line? How to reduce it?
• Corona rings and grading rings
  How corona rings work and what are grading rings.
• Skin effect and proximity effect
  What is skin effect? What is proximity effect?
• Insulators used in overhead power lines
  Pin, suspension, strain and shackle type insulators.
• Electrical insulators - materials and types
  Insulating materials and their properties. Post, glass, polymer, long-rod and stay insulators.
• Testing of overhead line insulators
  Flashover tests, performance tests and routine tests.
• Capacitance of underground cables
  Calculation of capacitance for single core and three core cables.
• Grading of underground cables
  Achieving uniform electrostatic stress in the dielectric of a cable.
• Faults in underground cables
  Various types of faults in underground cables and their detection.
• Loop tests for locating faults in underground cables
  Murray loop test and Varley loop test for locating faults in underground cables.
• Electric power distribution
  Now, let's see how electrical power is distributed to the consumers.
• Types of AC power distribution systems
  On the basis of number of phases and wires involved.
• AC distribution connection topology
  Radial, Parallel feeders, Ring main and Interconnected distribution system.