Research on Quantitative Relationship between Fire Separations and Ampacity in Underground pipe gallery Electric cabin. (February 2019)

• Record Type: Journal Article
• Authors: Wang, Jiaxu; Liu, Xuefeng; LI, Shu; Fang, Guanyu; Chen, Wenjing; Deng, Shiming
• Is Part Of: Energy procedia. Volume 158(2019)
• Page Start: 5557
• Page End: 5562
• Publication Date: 2019-02
• Subjects: Underground pipe gallery -- similarity criterion -- dimensionless number -- fire separation -- cable ampacity; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2019.01.587
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: In recent years, underground pipe gallery has become more and more important. Its Special working environment makes temperature monitoring and control increasingly important. paper applies heat-transfer differential equation to the cable to obtain the similarity criterion of cable temperature distribution. After calculating the electric cabin model with different fire separations, it is found that the temperature distribution of the same ampacity in different fire separations conforms to certain rules. The temperature distribution of different ampacity in the same fire separation is also regular: the ampacity rises. 5%, temperature rises by 7%. As a result, the fitting formulas of the current carrying capacity, the length of the fire separation and the location of the highest temperature were also proposed.