Definition: Electric grid

From Open Energy Information

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Electric grid

A network of transmission lines, substations, transformers and more, that deliver electricity from power plants to consumers; In the continental U.S., the electric grid consists of three systems: the Eastern, Western Interconnect, and Texas Interconnects.[1][2][3][4]

Wikipedia Definition

An electrical grid, electric grid or power grid, is an interconnected network for delivering electricity from producers to consumers. It consists of:
  • generating stations that produce electric power
  • electrical substations for stepping electrical voltage up for transmission, or down for distribution
  • high voltage transmission lines that carry power from distant sources to demand-centers
  • distribution lines that connect individual customers Electrical grids vary in size from covering a single building through national grids (which cover whole countries) to transnational grids (which can cross continents). Power stations connected to grids are often located near energy resources such as a source of fuel or to take advantage of renewable energy resources, and away from heavily-populated areas. A bulk-power transmission network is therefore used to move the power long distances, sometimes across international boundaries, until it reaches its wholesale customer (usually the organisation that owns the local electric power distribution network). The electric power is therefore stepped up to a high voltage for the electric power transmission system. On arrival at a substation, the power will be stepped down from a transmission level voltage to a distribution-level voltage. As it exits the substation, it enters the distribution wiring. Finally, upon arrival at the service location, the power is stepped down again from the distribution voltage to the required service voltage(s). Although electrical grids are widespread, as of 2016 1.4 billion people worldwide were not connected to an electricity grid. Electrical grids can be prone to malicious intrusion or attack; thus, there is a need for electric grid security. Also as electric grids modernize and introduce computers, cyber threats also start to become a security risk. Particular concerns relate to the more complex computer systems needed to manage grids.

Reegle Definition

A grid is a network of transmission lines, usually to distribute electric power .


Also Known As
The Grid
Related Terms
Smart gridElectricityPowerElectricity generationTransmission LineTransformer
References
  1. http://www.npr.org/templates/story/story.php?storyId=110997398
  2. http://www.smartgrid.gov/the_smart_grid#smart_grid
  3. http://www1.eere.energy.gov/solar/solar_glossary.html#E
  4. http://205.254.135.24/tools/glossary/index.cfm?id=E