Anti-condensation control method for power equipment box

Abstract

The invention provides an anti-condensation control method for a power equipment box. The method comprises monitoring the temperature and the humidity inside and outside the power equipment box in real time; determining the situation of the external environment temperature in segments to obtain a current temperature error e and a temperature error change ec; obtaining corresponding [delta]Kp, [delta]Ki and [delta]Kd fuzzy sets and the Kp, Ki and Kd values by fuzzy and calculating treatment; and calculating a PID control parameter according to the Kp, Ki and Kd values to control a heater so that the difference between the inside temperature T2 and the outside temperature T1 of the power equipment box is kept within a predetermined range. The anti-condensation control method has good anti-condensation effect and is easy to upgrade and maintain.

Description

technical field [0001] The invention relates to the technical field of anti-condensation of electric equipment, in particular to an anti-condensation control method of an electric equipment box. Background technique [0002] In some areas (such as the subtropical monsoon climate zone), the air humidity is high at the turn of spring and summer. Due to the high humidity inside the equipment box in the substation, condensation is prone to occur, especially in outdoor terminal boxes. If the sealing is not tight, the temperature and humidity control measures are not appropriate, etc., the condensation phenomenon in the box is often prone to occur, resulting in creepage, flashover accidents, and sometimes the terminal box catches fire due to a short circuit, so the problem of condensation in the box is solved is very important. [0003] In the prior art, two methods of heating-type dehumidification and semiconductor-type dehumidification are commonly used in the cabinet. These tw...

AI Technical Summary

Problems solved by technology

If the sealing is not tight, the temperature and humidity control measures are not appropriate, etc., the condensation phenomenon in the box is often prone to occur, which will cause creepage, flashover accidents, and sometimes the terminal box will catch fire due to a short circuit, so the problem of condensation in the box can be solved is very important

[0003] In the existing technology, two methods of heating dehumidification and semiconductor dehumidification are generally used in the cabinet. These two methods have obvious defects, and the dehumidification effect is difficult to meet the demand.

In addition, for technological renewal and transformation, the existing equipment needs to be replaced as a whole, and the equipment needs to be powered off once, and the secondary wiring needs to be re-wired. The risk of accidental contact and miswiring during the transformation is relatively high.

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