【摘要】：直流海底電纜在我國的應(yīng)用尚處于起步階段,運行經(jīng)驗不足,同時由于海底環(huán)境復(fù)雜,例行巡檢困難,因此亟需對直流海纜的在線監(jiān)測方法進(jìn)行研究。分布式光纖技術(shù)是近年來發(fā)展的新型光纖傳感技術(shù),可實現(xiàn)對溫度、應(yīng)力等參量的在線測量。文章建立了基于分布式光纖傳感技術(shù)的高壓直流海底電纜綜合在線監(jiān)測系統(tǒng),綜合利用了分布式光纖的BOTDA,ROTDR以及Φ-OTDR原理,提出了布里淵頻移解耦方案,可對直流海纜運行過程中的溫度、應(yīng)變、擾動等進(jìn)行實時測量,同時該系統(tǒng)還融合了船舶AIS功能,實現(xiàn)對直流海纜區(qū)域內(nèi)來往船只的監(jiān)測及警告,保障了直流海纜的安全穩(wěn)定運行。最后對該系統(tǒng)在南澳±160 k V直流海纜工程中的運行數(shù)據(jù)進(jìn)行分析,驗證了系統(tǒng)的有效性。
[Abstract]:The application of DC submarine cable in our country is still in its infancy, and its operation experience is not enough. At the same time, it is urgent to study the on-line monitoring method of DC submarine cable because of the complexity of submarine environment and the difficulty of routine inspection. Distributed optical fiber technology is a new type of optical fiber sensing technology developed in recent years, which can be used to measure temperature, stress and other parameters online. In this paper, an integrated on-line monitoring system of HVDC submarine cable based on distributed optical fiber sensing technology is established. The principle of BOTDA,ROTDR and 桅-OTDR of distributed optical fiber is comprehensively utilized, and the Brillouin frequency shift decoupling scheme is proposed. The temperature, strain and disturbance of DC submarine cable can be measured in real time. At the same time, the system integrates ship AIS function to monitor and warn ships in and out of DC submarine cable area. It ensures the safe and stable operation of DC submarine cable. Finally, the operation data of the system in Nanao 鹵160kV DC cable project are analyzed, and the validity of the system is verified.
【作者單位】： 廣東電網(wǎng)有限責(zé)任公司汕頭供電局;華北電力大學(xué)河北省輸變電設(shè)備安全防御重點實驗室;
【基金】：廣東電網(wǎng)公司科技項目(K-GD2014-0488)
【分類號】：P756.1;TP274
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本文編號：2343144