Affiliation:
1. China Electric Power Research Institute, Haidian, Beijing 100192, China
2. Information and Telecommunication Company of State Grid Shandong Electric Power Company, Jinan, Shandong 250001, China
Abstract
Optical fiber composite overhead ground wire (OPGW), which consists of ground wire and communication function, has been widely used in transmission lines. Its running state is directly related to the security of power grid communication. In reality, the main environmental factors leading
to OPGW malfunction include icing, mountain fire, wind vibration, etc., especially lightning stroke. In this paper, an OPGW temperature monitoring method based on Weak Fiber Bragg Grating (WFBG) array is proposed. By monitoring the temperature change caused by lightning stroke, the lightning
stroke level identification and lightning stroke location are realized. The test results show that the minimum lightning discharge identification can reach to 9 C and the lightning location resolution is better than 0.1 m. Compared with other lightning temperature monitoring methods, lightning
grade identification and positioning accuracy can be improved by this method, and it has the advantages of high real-time FBG, which provides a new approach for lightning monitoring of OPGW.
Publisher
American Scientific Publishers
Subject
Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials
Cited by
2 articles.
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