Method for reducing over-high ambient temperature of transformer room

Abstract

The invention relates to a method for solving the problem that the environment temperature of a transformer room is too high, in particular to a method for reducing the environment temperature of thetransformer room. The method comprises the steps: calculating a low-voltage side secondary current value when the load rate is 60% according to the capacity of a dry-type transformer installed in a 10kV room, setting a corresponding action current value through a dial switch of an intelligent current relay, and when the intelligent current relay collects the current of a dry-type transformer low-voltage side current transformer to meet the action current, enabling the intelligent current relay to output a passive contact, and connecting the normally open passive contact of the intelligent current relay to a starting loop of the on-site axial flow fan, thereby achieving the forced ventilation and heat dissipation of the transformer room, and solving a problem that the temperature rise of the dry-type transformer is too high during the heavy-load operation in summer. According to the invention, the temperature rise problem of the dry-type transformer installed indoors during high-load and high-temperature operation can be well solved.

Description

technical field [0001] The invention relates to a method for solving the excessively high ambient temperature of a transformer room, in particular to a method for reducing the excessively high ambient temperature of a transformer room. Background technique [0002] At present, the mechanical ventilation of the power transformer room in the power system mostly adopts the negative pressure air intake method, and the ventilation and heat dissipation are completed by the axial flow fan installed in the transformer room. [0003] The way of negative pressure air intake is to install an exhaust fan at the air outlet of the transformer room, and the exhaust fan will discharge the indoor air to form a negative pressure in the transformer room, and the cold outdoor air enters the transformer room from the air inlet to form a gas in the room. road loop. [0004] The problem with the ventilation and heat dissipation method of the axial flow fan installed in the transformer room is tha...

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Problems solved by technology

[0007] A method to reduce the excessive ambient temperature of the transformer room. Calculate the secondary current value of the low-voltage side when the load rate is 60% according to the capacity of the dry-type transformer installed in the 10kV room, and set the corresponding action through the dial switch of the intelligent current relay Current value, when the smart current relay collects the current of the current transformer on the low-voltage side of the dry-type transformer to meet the operating current, the smart current relay outputs a passive contact, and connects the normally open passive contact of the smart current relay to the starting circuit of the on-site axial flow fan. Realize forced ventilation and heat dissipation in the transformer room, and solve the problem of excessive temperature rise of dry-type transformers during heavy load operation in summer

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