500kV地下变电站电缆层电缆通道规划和敷设方式研究

Study of the power cable channel planning and way of laying of the cable layer of 500kV underground substation

以某500kV地下变电站为例,以GB 50217-2007和DL/T 5221-2005为基础,从电缆进出线规模、电缆敷设位置、电缆通道的形式等方面研究了电缆层内电缆通道的规划方法;利用控制变量法研究了电缆敷设方式和电缆支架形式间相互影响的关系,并提出利用横担利用率来进行横担长度设计的思路,而支架层间距则受电缆回路数、缆径等的影响。

The 500 kV underground substation of Shanghai was studied as an example in this paper, on the basis of the standards GB 50217--2007 and DL/T 5221--2005, the cable channel was studied through the numbers of the cables, the locations of the cables, the forms of the channels, and so on. And the interactional relationships between cable hangers forms and the way of cable laying were studied with the control variable method, moreover, using utilization raito of brackets to design brackets was put forward. On the other hand, the distance of brackets was limited on the number of cables and cable＇s diameter.