Overhead cables are widely used in various fields, primarily for power and communication transmission. Here are the main application areas of overhead cables:
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Power Transmission:
- High Voltage Transmission: Overhead cables are used for long-distance, high-voltage power transmission, transporting electricity from power plants to substations and end users.
- Distribution Networks: In urban and rural areas, overhead cables are used in low-voltage distribution networks to supply electricity to homes and commercial users.
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Communication Transmission:
- Telephone and Internet: Overhead cables are used to transmit telephone and internet signals, especially in rural and remote areas.
- Cable Television: Cable TV signals are also transmitted via overhead cables, covering larger areas.
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Transportation:
- Railway and Tram Systems: Overhead cables provide power to electrically driven trains and trams, ensuring their regular operation.
- Urban Public Transit: In some cities, overhead cables are used in electric bus and tram systems.
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Emergency and Temporary Power Supply:
- Emergency Power Supply: After natural disasters or emergencies, overhead cables can be quickly deployed to restore power.
- Temporary Power Supply: At construction sites, temporary events, and exhibitions, overhead cables provide temporary power supply.
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Wind and Solar Power Generation:
- Wind Farms: Overhead cables transmit electricity generated by wind turbines to the grid.
- Solar Power Plants: Similarly, overhead cables are used to transmit electricity generated by solar panels.
The widespread use of overhead cables is due to their ease of installation, low cost, and simple maintenance. However, overhead cables also have some disadvantages, such as being susceptible to weather conditions and posing certain safety risks. Therefore, when choosing a transmission method, it is essential to consider the specific application environment and requirements comprehensively.
