Comprehensive detection method for simulation test for typhoon resistant capacity of ADSS (all dielectric self-supporting optical fiber cable) under extreme conditions

Abstract

The invention discloses a comprehensive detection method for a simulation test for the typhoon resistant capacity of an ADSS (all dielectric self-supporting optical fiber cable) under extreme conditions. The method comprises the following steps: S1, the ADSS is erected between two fixed ends with a 45 m distance, no less than 50% of the maximum mounting horizontal tension of the ADSS is loaded, and the vibration frequency is adjusted in a range of 5-10 Hz, so that the galloping amplitude of the ADSS ranges from 1 to 2; the galloping is continued for 105 times; S2, OTDR (optical time domain reflectometry) optical attenuation test equipment is adopted to monitor additional attenuation of the ADSS; S2, the ADSS is subjected to a tensile property test; S4, if the additional attenuation of the ADSS in the step 2 is not greater than 0.1 dB / km and the residual tensile strength of the ADSS in the step 3 is not less than 95% RTS (rated tensile strength), the typhoon resistant capacity of ADSS meets design requirements. According to the comprehensive detection method, a test verification method for the typhoon resistant capacity of the ADSS is established, the motion mode and track of the ADSS under the typhoon condition are simulated, a technological means is provided for evaluating the typhoon resistant capacity of the ADSS, a selection method is provided for improving the typhoon resistant capacity of the ADSS in coastal areas, the possibility of faults is reduced, and the typhoon resistant capacity of communication lines of a power grid is improved.

Description

technical field [0001] The invention relates to a simulation test comprehensive detection method of the anti-typhoon ability of an optical cable under extreme conditions, in particular to a simulation test detection method of an all-dielectric self-supporting optical cable anti-typhoon ability (fatigue resistance performance and optical performance of optical fiber). Background technique [0002] All Dielectric Self-Supporting Optical Fiber Cable (hereinafter referred to as ADSS) is a non-metallic optical cable that is entirely composed of dielectric materials, contains the necessary support system, and can be directly suspended on the power pole. For communication in overhead high-voltage transmission systems. Due to its proximity to the coast, the ADSS of Guangdong Power Grid is often subjected to major tests by strong typhoons. According to statistics, at 04:15 on July 24, 2012, typhoon "Vicent" landed in Guangdong, causing a total of 6 grids in Zhuhai and Jiangmen. ADSS...

AI Technical Summary

Problems solved by technology

Due to its proximity to the coast, the ADSS of Guangdong Power Grid is often subjected to major tests by strong typhoons. According to statistics, at 04:15 on July 24, 2012, typhoon "Vicent" landed in Guangdong, causing a total of 6 grids in Zhuhai and Jiangmen. ADSS optical cables were affected, among which 3 110kV ADSS optical cables were interrupted, 2 110kV ADSS optical cables were damaged, and 1 10kV ADSS optical cable was interrupted; these incidents sounded the alarm for the safe operation of ADSS in coastal areas

With global warming and increasingly complex and changeable climates in coastal areas, there will be more and more strong typhoons and even super typhoons landing on the ground in the future, which will definitely seriously affect the safe operation of power grid communication cables

[0003] At present, there are no test methods and detection methods for the ability of ADSS to resist typhoon damage in all relevant domestic and foreign documents and standards.