Discussion on type selection and application scenarios of medium voltage switchgear
In view of the current contradiction between China's economic development and the shortage of land resources,the selection of medium-voltage switchgear was discussed in depth.The characteristics of fully insulated cabinets and central cabinets in terms of equipment structure,rated current,maintenance and repair,fault handling and assembly method were compared,and the floor space and cost of the two cabinet types were analyzed in detail based on actual data and equipment characteristics.On this basis,considering the power supply reliability,floor space,economic benefits,switch interruption capacity and operation and maintenance conditions,the selection recommendations for switchgear in different application scenarios were put forward.The study shows that when the area of the power room is not limited,it is recommended to adopt the central cabinet+lowvoltage connection solution when a section of busbar is connected to 5 or more distribution transformers,and the fully insulated cabinet+lowvoltage connection solution is appropriate for other situations.
medium voltage switchgearfully insulated cabinetcentralcabinetcomparativeanalysiscabinet type selection
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