How to cool down the substation that sends1.500 million kwh of electricity to Henan?

The cooling mode of the substation that transmits 65.438+0.5 billion kWh of electricity to Henan: the square sprinkler and the auxiliary cooling system with variable water spray for converter run on time, and the adverse effects of high temperature weather on the equipment are effectively controlled through measures such as auxiliary cooling with water spray, cooling of ice cubes and regular water spraying in the square.

At the Zhongzhou converter station with plus or minus 800 kV high voltage in Zhongmou, the transportation inspectors are checking the UHV equipment, which is the main channel for foreign power to enter Henan. Since the beginning of summer, it has been running with a large load of 6 million kilowatts, and it sends electricity to Henan every day10.50 billion kwh, accounting for about110 of the whole province.

In a 1 10 kV substation, 300 to 400 large ice cubes are needed to cool the facilities and equipment every 12 hour, and the noise generated by the blower is relatively large, which will have some impact on the lives of the surrounding residents. In addition to ice cubes and blowers, water spray was used to cool power facilities in the past.

The highest oil temperature in the main transformer of substation should not exceed 90℃, and too high temperature will affect the service performance and life of power facilities and equipment.

Matters needing attention in substation cooling:

State Grid Wuhan Power Supply Company will judge according to the climate, temperature changes and substation load, and each substation will continue to install new cooling systems according to actual needs to ensure the safe and stable operation of power grid equipment during high temperature in summer.

Due to the temperature rise, the winding temperature of the main transformer reaches 80 degrees Celsius. According to the shift supervisor of the substation operation inspection of Quanzhou Power Supply Company of State Grid, in order to ensure the normal power consumption of users in the jurisdiction, the company launched an emergency plan to "cool down" the transformer by installing sprinklers and water spray auxiliary cooling systems.

After the main transformer "cools down", the safe operation ability of the substation is further improved, which lays a solid foundation for the safe and reliable operation of the power grid during the peak summer.