Difference between revisions of "Transmission Infrastructure"
From energypedia
***** (***** | *****) (Created page with "== Introduction == In an electricity grid, power needs to be transmitted from where it is generated to where it is used. This requires the development of transmission infras...") |
***** (***** | *****) m |
||
| (3 intermediate revisions by the same user not shown) | |||
| Line 4: | Line 4: | ||
This requires the development of transmission infrastructure encompassing the physical equipment and systems used for the transmission of electric power at high voltages over long distances. In substations, the electricity is then reduced to lower voltages for distribution and utilisation by private, public, and industrial customers. Transmission infrastructure includes, i.e., power lines, poles, lines, towers, converters, transformers and substations.<ref name=":0">International Electronic Commission: [https://www.iec.ch/energies/transmission-distribution Transmission and distribution of electricity]; retrieved October 2024</ref> <ref><nowiki>https://www.lawinsider.com/dictionary/transmission-infrastructure</nowiki> </ref><ref>The State of Victoria Department of Energy, Environment and Climate Action 2023, [https://www.energy.vic.gov.au/__data/assets/pdf_file/0026/683522/summary-of-transmission-infrastructure-technical-report.pdf Summary of transmission infrastructure]</ref> | This requires the development of transmission infrastructure encompassing the physical equipment and systems used for the transmission of electric power at high voltages over long distances. In substations, the electricity is then reduced to lower voltages for distribution and utilisation by private, public, and industrial customers. Transmission infrastructure includes, i.e., power lines, poles, lines, towers, converters, transformers and substations.<ref name=":0">International Electronic Commission: [https://www.iec.ch/energies/transmission-distribution Transmission and distribution of electricity]; retrieved October 2024</ref> <ref><nowiki>https://www.lawinsider.com/dictionary/transmission-infrastructure</nowiki> </ref><ref>The State of Victoria Department of Energy, Environment and Climate Action 2023, [https://www.energy.vic.gov.au/__data/assets/pdf_file/0026/683522/summary-of-transmission-infrastructure-technical-report.pdf Summary of transmission infrastructure]</ref> | ||
| − | + | ||
| + | [[File:Key parts of a transmission network.png|500x500px]] | ||
== Transmission Infrastructure Types == | == Transmission Infrastructure Types == | ||
| Line 15: | Line 16: | ||
=== Onshore Transmission Infrastructure === | === Onshore Transmission Infrastructure === | ||
Transmission infrastructure can be deployed in two main ways: as overhead lines, which consist of conductors suspended on poles or towers and which carry high-voltage electricity from power plants to substations and homes; and as underground cables, which are mostly used in urban areas.<ref name=":0" /> | Transmission infrastructure can be deployed in two main ways: as overhead lines, which consist of conductors suspended on poles or towers and which carry high-voltage electricity from power plants to substations and homes; and as underground cables, which are mostly used in urban areas.<ref name=":0" /> | ||
| + | |||
| + | [[File:Transmission infrastructure types.png|500x500px]] | ||
=== Offshore Transmission Infrastructure === | === Offshore Transmission Infrastructure === | ||
An offshore transmission system is a network of (subsea) cables that connect offshore turbines to offshore and onshore substations. Subsequently, the substations are connected to the existing energy grid.<ref name=":0" /> | An offshore transmission system is a network of (subsea) cables that connect offshore turbines to offshore and onshore substations. Subsequently, the substations are connected to the existing energy grid.<ref name=":0" /> | ||
| + | |||
| + | [[File:Offshore transmission systems.png|400x400px|alt=]] | ||
| + | |||
| + | == Energy Losses == | ||
| + | The transmission of electricity over significant distances results in the loss of energy, from overhead lines and conductors, transformers and power cables. There are three main reasons for this:<ref>International Electrotechnical Commission (2018): [https://www.iec.ch/basecamp/transmission-and-distribution-td Transmission and distribution.]</ref> | ||
| + | |||
| + | * The Joule effect: energy is lost as heat in the conductor (a copper wire, for instance) | ||
| + | * Magnetic loss: energy dissipates in metallic parts penetrated by magnetic fields | ||
| + | * The dielectric effect: energy is absorbed by the insulating material | ||
== Further Information == | == Further Information == | ||
Latest revision as of 13:19, 31 October 2024
Introduction
In an electricity grid, power needs to be transmitted from where it is generated to where it is used.
This requires the development of transmission infrastructure encompassing the physical equipment and systems used for the transmission of electric power at high voltages over long distances. In substations, the electricity is then reduced to lower voltages for distribution and utilisation by private, public, and industrial customers. Transmission infrastructure includes, i.e., power lines, poles, lines, towers, converters, transformers and substations.[1] [2][3]
Transmission Infrastructure Types
There is a range of different transmission types with different characteristics, including:
- construction methods
- operation and maintenance needs
- environmental and land use impacts
Onshore Transmission Infrastructure
Transmission infrastructure can be deployed in two main ways: as overhead lines, which consist of conductors suspended on poles or towers and which carry high-voltage electricity from power plants to substations and homes; and as underground cables, which are mostly used in urban areas.[1]
Offshore Transmission Infrastructure
An offshore transmission system is a network of (subsea) cables that connect offshore turbines to offshore and onshore substations. Subsequently, the substations are connected to the existing energy grid.[1]
Energy Losses
The transmission of electricity over significant distances results in the loss of energy, from overhead lines and conductors, transformers and power cables. There are three main reasons for this:[4]
- The Joule effect: energy is lost as heat in the conductor (a copper wire, for instance)
- Magnetic loss: energy dissipates in metallic parts penetrated by magnetic fields
- The dielectric effect: energy is absorbed by the insulating material
Further Information
- Grid Portal on energypedia
References
- ↑ 1.0 1.1 1.2 International Electronic Commission: Transmission and distribution of electricity; retrieved October 2024
- ↑ https://www.lawinsider.com/dictionary/transmission-infrastructure
- ↑ The State of Victoria Department of Energy, Environment and Climate Action 2023, Summary of transmission infrastructure
- ↑ International Electrotechnical Commission (2018): Transmission and distribution.
