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The invention relates to a multiphase electric fiber composite power cable, the application number/patent number is 20/kloc-0 20 10 10548673, which comprises a temperature measuring optical cable (20), at least three cable cores for clamping the temperature measuring optical cable, at least one communication optical cable (10) located outside the cable core, and cables surrounding the cable cores and cables. A cavity is enclosed by the cable core to hold the temperature measuring optical cable (20), and the communication optical cable (10) is located in each filling layer (3) between the winding layer (4) and the cable core. Accord to that invention, the traditional cable is transformed into an intelligent cable with sen and communication functions, so that the dynamic monitoring of the cable current-carrying thermal effect can be realized remotely, and the hot spot position of the line, the current-carrying bottleneck position and the cable disconnection position can be found through real-time monitoring. Provide key technical conditions for smart grid construction. Application date: 201011.0616 Publication date: 201February 23rd authorization announcement date: applicant/patentee: Hangzhou Huaxin Power Cable Co., Ltd.; Shanghai Electric Power Company; Shanghai Ou Yi Intelligent Network Co., Ltd. Applicant Address: Zhejiang Hangzhou Economic and Technological Development Zone 12 Road Inventor: Guo Haijun; Hu Weijin; Li Feng; Wu haisheng; Wu; Chen Bo patent agency: Agent: Zhao Zhiyuan patent type: invention patent classification number H 01B 9/00; h 0 1b 1/22； G02B6/44 Click here to view the main drawing \ public specification \ authorization specification related to this patent.