Power distribution requirements for prefabricated box-type substations

The prefabricated box-type substation has the characteristics of strong complete set, small size, compact structure, safe and reliable operation, convenient maintenance, and movable. Compared with the conventional civil substation, the box-type substation of the same capacity usually covers an area of only It is 1/10~1/5 of the conventional substation, which greatly reduces the design workload and construction volume, and reduces the construction cost. In the power distribution system, it can be used in the ring network power distribution system, and can also be used in the dual power supply or radiation terminal power distribution system. It is a new type of equipment for the construction and transformation of urban and rural substations. Requirements for power distribution equipment: Insulating gloves should be worn when power distribution equipment is checked. If it is not possible to perform a direct electrical inspection, an indirect electrical inspection can be performed in accordance with the provisions of Article 3.3.3. When the capacitor is powered off, the power supply should be disconnected first, and the capacitor can be discharged and grounded before the work can be performed. When the grounding resistance of the power distribution equipment is unqualified, wear insulating gloves before touching the cabinet. The power distribution equipment should have a locking device, which is not allowed to exit operation at will. Unlocking is prohibited during the switching operation. If you need to unlock, you should go through approval procedures. The unlocking tool (key) should be sealed up in time after use. Common cable connectors used in power distribution equipment must not be plugged or unplugged under power. The elbow-type cable connector that can be plugged and unplugged under power is not suitable for load operation.