APPARATUS AND METHOD FOR SENSING CORROSION OF ALUMINUM OVERHEAD POWER TRANSMISSION LINE

摘要

PROBLEM TO BE SOLVED: To provide an apparatus and a method for sensing corrosion of an aluminum overhead power transmission line, which can monitor the generated corrosion without a worker and a corrosion observing apparatus on the aluminum overhead power transmission line.;SOLUTION: Since a corrosion sensing wire 10 is under the same corroding environment as a suspended aluminum overhead power transmission line 11, the corrosion on the corrosion sensing wire 10 is generated to the same extent as the aluminum overhead power transmission line 11. When the corrosion progresses and exceeds the thickness of an aluminum pipe 18d in the corrosion sensing wire 10, the optical fibers 18a, 18b in the aluminum pipe 18d are exposed to the corroding environment such as an oxide and moisture, etc., and distortion and an increase of a loss are generated due to bending by pressure from the oxide or degrading by a hydroxyl group. The of progress of the corrosion can be monitored by sensing the change of a characteristic of the optical fibers 18a, 18b in the corrosion sending wire without the worker and the corrosion observing apparatus on the suspended aluminum overhead power transmission line 11.;COPYRIGHT: (C)2002,JPO