Reasons and solutions for damage to optical cables in the inbound section of opgw cables

OPGW cable has the dual functions of communication and overhead ground wire, and its technical reliability and safety are better than ADSS, and there is no electrical corrosion problem like ADSS, so it is widely used in power systems.

However, the OPGW optical cable also has fatal shortcomings. If the grounding of the incoming part is not perfect, it will cause the OPGW incoming section to be damaged by lightning strike or short-circuit current, which will directly affect the safe and stable operation of the power grid.

Causes of Damage to Optical Cables in OPGW Inbound Section

Because the OPGW wire incoming optical cable is generally only grounded at the line terminal tower, and is not grounded at the substation gantry, this section of the optical cable is not protected, and the safe operation of the OPGW optical cable is hidden.

Solve the problem of damage to the optical cable in the incoming section of OPGW

1. 1. To ensure that the current can smoothly flow through the OPGW and merge into the ground in the event of a short circuit or lightning strike, the OPGW wire should not be burned;

2. 2. When the grounding resistance is measured regularly in the substation, the grounding of the line tower can be disconnected from the substation grounding network to ensure the accuracy of the measurement;

3. 3. The equipment of the substation cannot be damaged due to the introduction of OPGW.