1. Current Situation and ProblemsLow - voltage overhead cables often suffer insulation damage. Urbanization and infrastructure construction expose them to complex environments (construction, severe weather like strong winds/rains causing scratches or impacts, animal damage), easily breaking insulation layers. Long - term operation also degrades insulation due to aging, corrosion, and prolonged sunlight—e.g., cables in old communities age and crack, raising failure risks.Existing restoratio

1 Research on Cable Laying and Wiring Construction Technology of Photovoltaic Power Station1.1 Data CollectionBefore constructing the BIM model for cable laying, it is necessary to deeply master the detailed parameters of the involved equipment specifications, materials used in construction, and site conditions, aiming to improve the accuracy of model construction. To ensure that the BIM model can accurately reflect the actual situation of the construction site, the core lies in accurately colle

The integrated wiring system of intelligent buildings, as the core carrier of information transmission, functions like a "nervous system." It connects signals such as voice, data, and images, enabling device interconnection and efficient information transmission. Cable detection is a key link to ensure system performance and information security, focusing on index detection, problem troubleshooting, and response measures.1. Core Cable Detection Indicators1.1 Appearance and Identification Verific

In the context of deep integration of informatization and intelligence, protective spaces, as core carriers of critical communication systems, their stability and safety directly impact information transmission reliability and infrastructure operational efficiency. Thus, analyzing core difficulties (environmental adaptability matching, electromagnetic compatibility design, construction precision control) in communication cable installation in protective spaces holds significant engineering value

1 IntroductionWhether using any finite element analysis software (such as COMSOL, Infolytica, or Ansys) for transformer simulation analysis—whether focusing on electric field, magnetic field, flow field, mechanical field, or acoustic field—the basic process is roughly the same. A true understanding of the key points in each process is the foundation for the success of the simulation analysis and the reliability of the final results.2 Basic Simulation ProcessA scientific and complete

Sharing of Transformer Concepts and TerminologyThe zero-mode impedance of a load is infinite, and its line-mode impedance is also extremely large, approximately 100 times that of the line-mode impedance of the line.The capacitance to ground of a cable is 25-50 times that of an overhead line.The free oscillation frequency of transient capacitive current: 300-1500Hz for overhead lines and 1500-3000Hz for cables.Performance requirements for an external grounding transformer: Under normal power supp