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日本的许多电力公司很久以来就对光纤通信系统的特性,如无感应性、高绝缘性、传输容量大等等感兴趣。自1974年以来,它们一直在进行使用光纤通信来传输电力系统的保护、监视和控制数据的现场试验。基于这些工作,从1978年到现在,已有六家日本的电力公司安装了九条光纤通信系统,这些系统的性能记录表明是完全令人满意的。
Many power companies in Japan have long been interested in the characteristics of optical fiber communication systems such as non-responsiveness, high insulation, large transmission capacity, and the like. Since 1974, they have been conducting field trials of protecting, monitoring and controlling data using optical fiber communications to transmit electrical power. Based on these efforts, nine optical fiber communication systems have been installed in six Japanese power companies since 1978, and the performance records of these systems have proved completely satisfactory.