Method for designing optical cable of secondary system of intelligent transformer substation

The invention relates to a method for designing an optical cable of a secondary system of an intelligent transformer substation. The method mainly comprises the following step of respectively designing the following figures according to the following steps: a, an optical cable contact figure in which all optical cables of each network segment are marked in a centralized manner; b, an interval fiber interface distribution figure in which all intelligent devices within a typical interval, the fiber interface distribution of an interval exchanger and optical cable connection are clearly expressed according to a mounting unit; c, a root exchanger fiber interface distribution figure in which optical cable numbering and marking are performed on fiber interface distribution and connection relationship of a root exchanger, and fiber interface of a continuing optical fiber distribution unit according to an interval-oriented principle in a centralized manner; d, a span interval device fiber interface distribution figur