Submarine optical cable breakpoint location and disturbance location analysis method and system

Abstract

The present invention belongs to the technical field of power grid monitoring and relates to a submarine optical cable breakpoint location and disturbance location analysis method and system. The method comprises the following steps that: a data acquisition card is adopted to acquire signal strength data on an optical cable, multiple-point data averaging is performed on the acquired signal strength data, so that signal strength curves are obtained; the plurality of signal strength curves are accumulated; the absolute value of the difference of strength accumulation curves is calculated, so that a difference value curve is obtained, every two adjacent signal strength curves being accumulated to obtain one strength accumulation curve; values on the difference value curve are compared with athreshold value, points on the difference value curve, which exceed the threshold value, are judged as submarine cable disturbance events, if events occur in all points behind a certain point, it canbe determined that the point is an optical cable breakpoint; and points which are located behind the point on the strength accumulation curves and have vertical coordinates smaller than 0, are disturbance points. According to the submarine optical cable breakpoint location and disturbance location analysis method and system of the invention, the signals are accumulated in space and in time, so that a high signal-to-noise ratio is obtained; two adjacent groups of accumulated signals are subtracted from each other, so that the disturbance condition of the submarine optical cable can be judged,and the breakpoint position of the submarine optical cable is obtained. Therefore, with the method and system adopted, the breakpoint position of the optical cable can be judged when the disturbance of the optical cable is detected, and judgment is accurate, and calculation time is short.

Description

technical field [0001] The invention relates to the technical field of power grid monitoring, and more specifically, to a method and system for analyzing breakpoint positions and disturbance positions of submarine optical cables. Background technique [0002] The existence and development of submarine optical cables have a history of more than 160 years, and the use of submarine optical cables has exceeded a hundred years. Due to the high cost of the submarine optical cable, the special layout environment, the high repair and maintenance costs and long cycle after the submarine cable is damaged, and the high cost of power outage and production stoppage caused by the submarine optical cable failure, it is urgent to use the submarine optical cable online monitoring technology to monitor the submarine cable in real time. Operational monitoring. Traditional submarine cable protection thinking mainly focuses on protection during construction and rapid repair after failure. The m...

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Problems solved by technology

However, these traditional methods cannot detect the disturbance or damage of the submarine optical cable in the first place, which hinders the protection and maintenance of the submarine optical cable.

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