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TopOpgw State Evaluation In Icing Scenarios Based On Msif And Qpso-Dqn
With the rapid development of modern society and the explosive growth of information, communication networks have become an important component of national infrastructure. In this field, optical ground wire (OPGW), as a unique type of optical cable, has attracted much attention due to its dual functions of both overhead ground wire for power lines and fiber optic communication (Xia et al., 2023; Sun et al., 2021; Marie et al., 2020). OPGW is a composite optical cable that wraps optical fibers in overhead ground wires. It uses power overhead ground wires as external protection for optical cables, while providing grounding protection and electromagnetic interference resistance for power lines (Nguyen & Nguyen, 2020; Mohammed & Daham, 2021; Wang et al., 2022). Due to its unique structure, OPGW has many advantages:
- 1.
Due to their structural characteristics, OPGW optical cables are highly reliable and can effectively avoid communication line failures caused by lightning strikes and short-circuit currents in traditional power communication systems (Peng et al., 2022; Xu et al., 2020).
- 2.
OPGW optical cables are suitable for installation on power lines of various voltage levels and are easy to construct and install (Zhang et al., 2022; Wang & Li, 2022).
- 3.
OPGW optical cables can withstand large stresses and have strong resistance to strong winds, ice, and other factors (Wang et al., 2020a; Wang et al., 2020b).
- 4.
OPGW optical cables have a long service life, generally ranging from 25 to 30 years, often more (Martín-López et al., 2021; Qin et al., 2021).
OPGW is generally designed and installed simultaneously with overhead ground wires of transmission lines and can be installed in one go. On the premise of maintaining all the performance and functions of the original overhead ground wire unchanged, optical fibers are added to open up high-performance optical transmission channels, making it both lightning protection and communication functions (Wang et al., 2022; Lalam et al., 2021). As seen above, OPGW has good electrical, mechanical, and optical transmission performance and has been widely used in power grids in recent years. Most newly built transmission lines use OPGW as overhead ground wire, which undertakes important tasks in power communication (Lin et al., 2021; Rao et al., 2021). Compared to overhead transmission lines, OPGW towers are higher than transmission lines, closer to thunderstorms, and more susceptible to lightning strikes. During normal operation, OPGW has no load current, and the wire diameter is smaller than that of the conductor, which makes OPGW more severely covered with ice under the same meteorological conditions. Due to the lower mechanical strength of OPGW compared to conductors, it is more susceptible to damage and more severe (Ding et al., 2021; Wang et al., 2023; Zhu et al., 2022).