基于非消防负荷在切除方式、时间、切断点等方面做法不一的问题，通过对各种非消防负荷的类型特点、断电影响、火灾位置、运营管理需求等方面进行分析，对不同的切除对象给出相应切除的方式、时间、切断点。提出优化后的切非方案：三级负荷等可立即切除的负荷和有固定控制流程的负荷均自动切除；无法固定控制流程的负荷手动切除。三级负荷等断电不会影响运营和疏散救援的负荷可立即切断；电梯、站台门、闸机/门禁按控制逻辑指令执行完可切除；切断点选在变电所低压柜内较安全，正常照明、小动力箱建议在配电箱处分区域切除。

Non-firefighting cutoffs are different with regard to their cutoff mode, time, and cutting points. Based on an analysis of the types and characteristics of non-fire loads, the influence of the power cut, fire location, operation and management requirements, and other aspects, the corresponding cutoff mode, time, and cutoff points are given for different cutoff objects. An optimized non-firefighting power cutoff scheme is examined. For a three-stage load, the power outage will not affect the operation or rescue and can be automatically and immediately cut off. Loads with a fixed control process can be cut off automatically. Loads without a fixed control process can be cut off manually. The elevator, platform door, AFC gate, and entrance guard can be cut off after execution of the control logic command. It is safer to perform a cutoff in the low-voltage distribution cabinet of the substation. The authors suggest that normal lighting and a small power box can be cut off in different areas of the distribution box.

U231.1