110 kV GIS电气设备CT改造程序及风险管控

CT Modification Procedure and Risk Control of 110 kV GIS Electrical Equipment

对某公司新创建的四期电厂进线电源工程项目进行改造,将原1#主变进线间隔改造为此次启备变进线110 kV间隔,但鉴于原电流互感器容积小,无法达到相关要求。为此,必须更换原#1主变电气柜全柜开关两侧电流互感器线圈,并将开关出线侧普通接地开关拆换为快速接地开关。通过严控改造施工工艺质量和安全措施,进行此次GIS电气设备电流互感器新项目的改造,不但可以降低改造期110 kV GIS电气设备大规模断电的风险性,还能够降低此次GIS电气设备改造费用。

A company’s newly created four-phase power plant inlet power project to transform the original#1 main transformer inlet interval for this start-up transformer inlet 110 kV interval,but in view of the original current transformer volume is small,can not meet the relevant requirements.For this reason,the current transformer coils on both sides of the full cabinet switch of the original#1 main transformer electrical cabinet must be replaced,and the normal grounding switch on the outgoing side of the switch must be removed and replaced with a fast grounding switch.Through strict control of the transformation construction process quality and safety measures,the transformation of this new project of GIS electrical equipment current transformer,not only can reduce the risk of large-scale power failure of 110 kV GIS electrical equipment during the transformation period,but also can reduce the cost of this GIS electrical equipment transformation.