Moisture-proof and dehumidification method for 10 kV box substation

Abstract

The invention discloses a moisture-proof and dehumidification method for a 10-kilovolt box-type substation, which belongs to the field of moisture-proof and dehumidification of power supply and distribution devices. The semiconductor dehumidification module is installed in the cabinet of the box transformer; the temperature and humidity sensors are respectively installed inside and outside the cabinet; the drainage pipeline and the exhaust fan are arranged on the cabinet; the dehumidification module, the temperature and humidity sensor and the exhaust fan are connected with the local control terminal module. When the humidity inside the cabinet is greater than the humidity of the outside air, and the humidity inside the cabinet is higher than the predetermined upper limit of humidity, start the exhaust fan, change the air inside and outside the cabinet through rapid exchange, and reduce the humidity of the air inside the cabinet; when the humidity inside the cabinet is higher than When the predetermined humidity upper limit is reached, the dehumidification module actively sucks the humid air in the closed space of the closed box-type cabinet into the dehumidification air duct, and the water vapor in the air is condensed into water after being cooled by the dehumidification module, and then discharged from the cabinet through the water guide pipe, dehumidification The final dry air is circulated in the cabinet. Through the working mode of cooling-drainage-ventilation, it realizes the moisture-proof and dehumidification function in the cabinet of the box-type transformer.

Description

technical field [0001] The invention belongs to the field of moisture-proof, dehumidification and monitoring of power supply and distribution devices, and in particular relates to a moisture-proof and dehumidification method for a 10-kilovolt box-type substation. Background technique [0002] In the low-voltage distribution network, box-type substations or box-type transformers (box-type transformers for short) are the most commonly used terminal power distribution methods. They are generally installed outdoors as an intermediate link between high and low voltage conversion and power distribution to residential users. [0003] However, since the box substation and switchgear are often sealed, the internal space is relatively narrow, affected by the rainy season and weather changes, the humid air cannot be discharged in time, and condensation is prone to occur inside. [0004] Condensation attached to components or electrical connection points will affect the insulation perfo...

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Problems solved by technology

[0008] In the above technical solution, one is to use acetone to clean the insulation of the high-voltage switchgear of the high-voltage switch system, which is usually difficult to implement for a compact box-type transformer, unless the entire box-type transformer is disassembled; and the box-type transformer is disassembled After assembly, it is often difficult to guarantee the assembly quality and electrical safety parameters after assembly in actual work; the second is to use heating and dehumidification mode, which is not suitable for the high temperature and humid environment in the south

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