Definition: Transmission Operator

From Open Energy Information

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Transmission Operator

The entity responsible for the reliability of its 'local' transmission system, and that operates or directs the operations of the transmission facilities.[1]

Wikipedia Definition

A transmission system operator (TSO) is an entity entrusted with transporting energy in the form of natural gas or electrical power on a national or regional level, using fixed infrastructure. The term is defined by the European Commission. The certification procedure for Transmission System Operators is listed in Article 10 of the Electricity and Gas Directives of 2009. Due to the cost of establishing a transmission infrastructure, such as main power lines or gas main lines and associated connection points, a TSO is usually a natural monopoly, and as such is often subjected to regulations. In electrical power business, a TSO is an operator that transmits electrical power from generation plants over the electrical grid to regional or local electricity distribution operators. In natural gas business, a TSO receives gas from producers, transports it via pipeline through an area and delivers to gas distribution companies. The United States has similar organizational categories: independent system operator (ISO) and regional transmission organization (RTO)., A Transmission System Operator (TSO) is an entity entrusted with transporting energy in the form of natural gas or electrical power on a national or regional level, using fixed infrastructure. The term is defined by the European Commission. The certification procedure for Transmission System Operators is listed in Article 10 of the Electricity and Gas Directives of 2009. Due to the cost of establishing a transmission infrastructure, such as main power lines or gas main lines and associated connection points, a TSO is usually a natural monopoly, and as such is often subjected to regulations. In electrical power business, a TSO is an operator that transmits electrical power from generation plants over the electrical grid to regional or local electricity distribution operators. In natural gas business, a TSO receives gas from producers, transports it via pipeline through an area and delivers to gas distribution companies. The United States has similar organizational categories: independent system operator (ISO) and regional transmission organization (RTO). Process of transmission and distribution of electric power :
  • The maximum voltage in advanced countries is 33 kV while that in India is 11 kV.
  • The amount of power that has to be transmitted through transmission lines is very large and if this power is transmitted at 11KV or 33KV the line current and the power loss would be very large. Therefore the voltage is stepped up to a higher value by using step-up transformers located in sub-stations.
  • The transmission voltages in India are 400KV, 220KV, and 132KV.
  • The high voltage transmission lines transmit electric power from the generating stations to the main receiving end substations. At these stations, the voltage is stepped down to a lower value of 66KV or 33KV.
  • The secondary transmission system forms the link between the main receiving end substations and secondary substations. At the secondary substations, the voltage is stepped down to 33 kV or 11KV and the power is fed into the primary distribution system.
  • The 33kV or 11kV distribution lines emanate from the secondary substations and terminate in distribution substations. The distribution substations consist of step-down transformers and are located at convenient places in the area in which the power is to be supplied. Sometimes distribution substations consist of a pole-mounted transformer located on the roadside. These transformers step down to 400 volts.
  • The 400-volt distribution lines are laid along the roads and service connections to consumers are tapper off from the distributors.
  • All transmission and distribution systems are 3-phase systems.
  • The transmission lines and feeders are 3-phase 3-wire circuits.
  • The distributors are 3-phase 4 wire circuits because the neutral wire is necessary to supply the single-phase loads of domestic and commercial consumers.
  • The transmission network is commonly known as the "grid".


Also Known As
Transmission system operator
Related Terms
transmission linespowerTransformerelectricity generationtransmission linefuel cell
References
  1. Glossary of Terms Used in Reliability Standards


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