1, a class of substations. Refers to the AC ultra-high voltage station, nuclear power, large energy bases (3 million kw and above) transmission and cross-region (North China, Central China, East China, Northeast, Northwest) contact 750/500/330kV substation.
2, two types of substations. Refers to other than a class of substations, 750/500/330kV substations, power plant transmission substations (1 million kW and above, 3 million kW or less) and cross-provincial liaison 220kV substations, the main transformer or busbar outage, switch refusal to cause the fourth level and above the power grid event substation.
3, three types of substations. In addition to the second category of 220kV substations, power plant transmission substations (300,000kW and above, 1 million kW or less), the main transformer or busbar shutdown, switch refusal caused by the fifth level of the grid event substation, for the first level and above the important users of the power supply directly to the substation.
4, four types of substations. It refers to the substations of 35kV and above in addition to the first, second and third categories.
Expanded Information:
Substation layout requirements:
①Building ground floor attached to the 10 kV substation does not need to be divided into rooms, transformers and high and low voltage switchgear can be the same level of the same room layout, only need to maintain a specific spacing, with a proprietary building 35 kV independent substation should be in accordance with the function of the layered layout of the room;
② Substation indoor layout should be compact and reasonable, easy to operate the staff of the operation, maintenance, testing and inspection, switchgear installation location should meet the minimum channel width requirements, and give due consideration to the development and expansion requirements;
③ chamber layout substation should be reasonably arranged for the location of the functional rooms within the station, high-voltage distribution room adjacent to the high-voltage capacitor room, low-voltage distribution room adjacent to the transformer room, low-voltage distribution room should be easy to get out of the wire, the location of the control room should be convenient for the operation of the work and management;
① substation should be compact and reasonable indoor layout for the operation of personnel The location of the control room should be convenient for the work and management of the operation personnel;
4) The facilities of the high and low-voltage distribution room should meet the safety and fire prevention requirements, and the station is not allowed to be decorated with combustible materials;
5) The doors of the high and low-voltage distribution room, the capacitor room and the transformer room should be opened outwardly, and the doors of the two neighboring rooms should be opened in both directions;
6) The high and low-voltage distribution room, the capacitor room, the transformer room and the master control room should be equipped with facilities to guard against the rain, snow, snakes, rodents and so on from the doors, windows and cables, and the control room should be protected from the rain and snow. The facilities to prevent rain, snow, snakes, rats and mice from entering the room through the doors, windows and cable ditches should be set up.
Reference: