Terminal box

Abstract

The invention discloses a terminal box which comprises a box body and a temperature and humidity control device, wherein the box body is in an enclosed structure; the temperature and humidity control device comprises a controller, an air conditioner, a dehumidifier, a temperature sensor and a humidity sensor. The temperature sensor and the humidity sensor are respectively used for collecting temperature and humidity signals in the box body and transmitting the temperature and humidity signals to the controller. The controller is used for respectively comparing the temperature and the humidity in the box body with set operating temperature and set operating humidity. Moreover, when the temperature in the box body is higher than the maximum operating temperature or is lower than the minimum operating temperature, the controller switches on the air conditioner. When the humidity in the box body is higher than the maximum operating humidity, the controller switches on the dehumidifier. According to the invention, the temperature and the humidity in the box body are adjusted by using the air conditioner and the dehumidifier respectively and the operating requirements on precision electrical elements in the box body are better met by controlling the operation of the air conditioner and the dehumidifier through the controller.

Description

technical field [0001] The invention relates to a component of a substation, in particular to a terminal box of a substation. Background technique [0002] The terminal box is a kind of electrical equipment box commonly used in substations in the power industry. Traditional conventional terminal boxes were used in the past. The traditional conventional terminal box is just a simple metal shell, which can only provide the most basic physical protection for the electrical components in the box. The temperature and humidity conditions in the box are greatly affected by the external environment, so it can only meet the general electrical requirements. Component and Equipment Usage Requirements. Moreover, with the continuous development of the power industry, the development of smart grids and digital substations has been put on the agenda. The development of digital substations puts forward the requirement of decentralizing intelligent electronic equipment to the local area. T...

AI Technical Summary

Problems solved by technology

[0004] (1) Because there are ventilation louver holes on the wall of the cabinet, on the one hand, the temperature and humidity in the cabinet are greatly affected by the environment and cannot be controlled; on the other hand, dust, moisture, corrosive gases, and even some insects , Small animals will enter the box through the ventilation louver holes, affecting the normal operation of the electrical components in the box;

[0005] (2) There are the following problems in improving the working environment in the box by heating up the heater and convective replacement of the air inside and outside the box: ①The heating of the heater only temporarily reduces the humidity in the box, and the moisture in the air in the box does not When the ambient temperature drops, the water vapor in the air will condense and adhere to the surface of electrical components, burying hidden dangers for the safe operation of electrical equipment; ②The temperature and humidity of the air outside the box are not certain Yes, it may be high temperature and high humidity. After the replacement, the condition inside the box will become worse and cannot meet the operating requirements of smart electronic devices; If the temperature is lowered, it is easy to block the air outlet, so that the air inside and outside the box cannot circulate, which not only fails to achieve the cooling effect, but also causes the temperature inside the box to rise in turn.

Images