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Aiming at the requirement of “plug and play” for modular construction of intelligent substation, a high-density prefabricated optical cable with fast connection, reliable performance and blind insertion, and a standardized and modular fusible-free optical fiber distribution module are designed. The prefabricated optical fiber cable and the fusible-free optical fiber distribution module solve the problem that the standard of the intelligent substation prefabricated optical cable interface is not uniform and the size of the non-welded optical fiber distribution module is not standard, and the efficiency, reliability, standardity and interchangeability of the optical connection are improved. . Through the test and verification of the prefabricated optical cable and the fusible-free optical fiber distribution module, it is shown that the prefabricated optical cable and the fusible-free optical fiber distribution module achieve the goal of standardization, modularization, versatility, interchangeability and compatibility of intelligent substation construction.