Poor ventilation in the transformer room will also cause serious failure of the transformer due to excessive temperature.
The area of ​​the ventilation window of the transformer room is designed according to the requirements of the summer ventilation of the transformer room, the temperature is not more than +35 °C (the temperature of the incoming air), the outlet temperature is 45 °C, and the temperature difference between the inlet and outlet is not more than 15 °C. The transformer manufacturer stipulates that the normal ambient temperature of the transformer does not exceed +40 °C.
The national standard map ventilation conditions are 5 °C higher than the normal operating environment temperature specified by the manufacturer. The transformer room is designed according to the size of the transformer room in the national standard map. It does not meet the requirements of the transformer for ambient air temperature. When the summer temperature is the highest, the electrical load is also the maximum. The air temperature around the transformer is high, the load is large, and the temperature rise of the transformer itself is too high, and it is difficult to avoid the transformer failure. Some areas are for the prevention of rodent small animals. A high 0.6m anti-rat gate is set at the gate of the transformer room. The transformer room door is slatted with a screen. The large inlet area of ​​the lower part of the transformer room gate is just blocked. The effective area of ​​the room air inlet window becomes smaller, and the ventilation effect becomes worse.
The size of the transformer room in the new substation is limited by the column distance of the whole building. Some transformer rooms are deeper and deeper. The transformer is located away from the louver window on the wall of the substation, which makes the ventilation effect around the transformer be discounted.
When the newly-built Tianjin transformer room is part of a standard factory building, some transformer room design heights are limited, 1600kVA, 2000kVA transformer room, and some areas still require bench-type layout, and the ventilation effect is poor.
In order to increase the distance between the terminal and the terminal of the transformer, the transformer is installed on the steel gantry. The indoor temperature of the transformer varies with the height of the distance. The higher the distance from the surface, the higher the temperature. The transformer is mounted on a steel pedestal at a distance from the surface. The high position makes the transformer at a higher temperature in the room. An exhaust fan is installed next to the louver window of the transformer room to perform forced air exchange. However, the exhaust fan airflow and the airflow louver airflow are close to each other and short-circuited, so that the efficiency of the exhaust fan is not fully exerted.
The area of ​​the ventilation window of the transformer room is designed according to the requirements of the summer ventilation of the transformer room, the temperature is not more than +35 °C (the temperature of the incoming air), the outlet temperature is 45 °C, and the temperature difference between the inlet and outlet is not more than 15 °C. The transformer manufacturer stipulates that the normal ambient temperature of the transformer does not exceed +40 °C.
The national standard map ventilation conditions are 5 °C higher than the normal operating environment temperature specified by the manufacturer. The transformer room is designed according to the size of the transformer room in the national standard map. It does not meet the requirements of the transformer for ambient air temperature. When the summer temperature is the highest, the electrical load is also the maximum. The air temperature around the transformer is high, the load is large, and the temperature rise of the transformer itself is too high, and it is difficult to avoid the transformer failure. Some areas are for the prevention of rodent small animals. A high 0.6m anti-rat gate is set at the gate of the transformer room. The transformer room door is slatted with a screen. The large inlet area of ​​the lower part of the transformer room gate is just blocked. The effective area of ​​the room air inlet window becomes smaller, and the ventilation effect becomes worse.
The size of the transformer room in the new substation is limited by the column distance of the whole building. Some transformer rooms are deeper and deeper. The transformer is located away from the louver window on the wall of the substation, which makes the ventilation effect around the transformer be discounted.
When the newly-built Tianjin transformer room is part of a standard factory building, some transformer room design heights are limited, 1600kVA, 2000kVA transformer room, and some areas still require bench-type layout, and the ventilation effect is poor.
In order to increase the distance between the terminal and the terminal of the transformer, the transformer is installed on the steel gantry. The indoor temperature of the transformer varies with the height of the distance. The higher the distance from the surface, the higher the temperature. The transformer is mounted on a steel pedestal at a distance from the surface. The high position makes the transformer at a higher temperature in the room. An exhaust fan is installed next to the louver window of the transformer room to perform forced air exchange. However, the exhaust fan airflow and the airflow louver airflow are close to each other and short-circuited, so that the efficiency of the exhaust fan is not fully exerted.
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