What safety hazards may exist in cables and overhead lines in extreme environments？

In extreme environments, both cables and overhead lines may pose the following safety hazards:
cable
External environmental impact: Underground cables may be affected by factors such as soil corrosion, changes in groundwater level, geological activities, etc., leading to a decrease or damage in insulation performance.
Construction quality: Construction quality issues during cable laying, such as poor joints, insulation damage, etc., may lead to cable failures.
Theft and illegal intrusion: Underground cables may face the risk of theft or illegal intrusion, leading to cable damage or interruption.
Maintenance difficulties: The maintenance of underground cables is relatively difficult, and once a malfunction occurs, more time and resources may be needed to repair it.
Overhead line
Adverse weather conditions: Overhead lines may be affected by severe weather conditions such as strong winds, lightning, ice and snow, leading to faults such as line breakage and short circuits.
External damage: Overhead lines may be affected by external forces such as tree growth, animal activity, traffic accidents, etc., resulting in line damage or interruption.
Corrosion and aging: Overhead lines may suffer from corrosion and aging due to long-term exposure to the external environment, affecting their performance and safety.
Maintenance cost: The maintenance cost of overhead lines may be high and requires regular inspection and repair to ensure their stable operation.
Overall consideration
In extreme environments, both cables and overhead lines may have safety hazards, which may be exacerbated by environmental conditions, engineering quality, maintenance management, and other factors. To ensure the safe operation of cables and overhead lines, a series of measures need to be taken, such as strengthening engineering quality supervision, improving maintenance management level, and strengthening safety protection. At the same time, it is also necessary to select suitable cable and overhead line types based on specific environmental conditions and usage requirements to ensure their adaptability and reliability.