Transformer substation terminal box temperature and humidity control system based on Zigbee wireless communication

Abstract

The invention discloses a transformer substation terminal box temperature and humidity control system based on Zigbee wireless communication. The transformer substation terminal box temperature and humidity control system comprises a temperature and humidity sensing module, a microprocessor, a Zigbee terminal node, a Zigbee central node, an upper computer, a relay, a heater and a ventilation fan.The temperature and humidity sensing module is electrically connected with the microprocessor; the microprocessor is in communication connection with the Zigbee terminal node; the Zigbee terminal nodeis in communication connection with the Zigbee central node; the Zigbee central node is in communication connection with the upper computer; the microprocessor is electrically connected with the relay; and the relay is electrically connected with the heater and the ventilation fan. The temperature and humidity in the terminal box of a transformer substation can be monitored at the same time, andtemperature and humidity closed-loop control in the terminal box is automatically completed by judging whether the temperature and humidity exceed limit values or not and combining the relay; the Zigbee central node and the Zigbee terminal node are networked, so that a wireless communication function is realized, and temperature and humidity data can be uploaded in a centralized manner; and in addition, the upper computer can obtain external meteorological conditions in different time periods, so that the temperature and humidity limit value in the terminal box can be updated.

Description

technical field [0001] The invention relates to the field of temperature and humidity control of a substation terminal box, and more particularly relates to a temperature and humidity control system for a substation terminal box based on Zigbee wireless communication. Background technique [0002] Most of the existing substation terminal boxes are installed outdoors. When the temperature and humidity in the air change, condensation and dripping will occur, resulting in damage to the insulation of the secondary circuit, and even a short circuit. If the terminal block or the contacts of the relay are short-circuited, it will directly cause the protection to malfunction. In addition, when the terminal box is damp, its terminal row screws and connecting pieces are prone to rust, which may cause poor contact of the secondary terminals, heat the current loop terminals, or even cause an open circuit, resulting in protection refusal or misoperation, leading to safety accidents. The...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a solution to solve the problems that the existing substation terminal box control system lacks the communication function, prevents condensation only from the temperature but not from the humidity, and cannot change the internal temperature and humidity limits according to the external meteorological conditions in different time periods. A temperature and humidity control system for substation terminal box based on Zigbee wireless communication

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