综合管廊工程中的强电设计问题探讨

Discussion on Several Problems of Electrical Design in Utility Tunnel Project

结合近年来综合管廊以及其配套的监控中心在设计中遇到的若干问题,针对供电电源、负荷等级的要求,分析了几种不同环境下的供电方案。针对变压器规格和高低压电气设备,尤其是断路器的选型,通过短路电流和电动机起动以及负荷计算的结果阐述了一些值得注意的要点;介绍了风机选型的注意事项;讨论了管廊内电气的接地防雷和设备环境防护。

According to some existing design problems of utility tunnel and monitoring center in recent years,in view of the requirements of power supply and load level,several different schemes were analyzed. Aiming at the design of the transformer and the selection of high and low voltage electrical equipment,especially the selection of circuit breaker,some noteworthy points were elaborated based on the results of short circuit current,motor starting and load calculation.In addition,some new design ideas and precautions of fan selection were introduced. The lightning protection of the electrical equipment in the utility tunnel was discussed,as well as the environmental protection,for the control and selection of fans and other equipment. It can provide references for the electrical design of utility tunnel.