Cooling and dehumidifying device and method for inner chamber of high-voltage power distribution cabinet

Abstract

The invention discloses a cooling and dehumidifying device for an inner chamber of a high-voltage power distribution cabinet, and the device comprises a temperature sensor which is used for detecting the temperature of the inner chamber of the high-voltage power distribution cabinet; the humidity sensor is used for detecting the indoor humidity of the high-voltage power distribution cabinet; the ventilating fan is used for adjusting the temperature or humidity of the inner chamber of the high-voltage power distribution cabinet; the ventilating fan is used for adjusting the temperature of the inner chamber of the high-voltage power distribution cabinet; the controller is used for sending out a control signal for starting the ventilating fan to adjust the temperature of the inner chamber of the high-voltage power distribution cabinet according to signals provided by the temperature sensor and the humidity sensor, or sending out a control signal for starting the ventilating fan to adjust the humidity of the inner chamber of the high-voltage power distribution cabinet; when the temperature in the high-voltage power distribution cabinet exceeds a second temperature threshold value, a control signal for starting the ventilator to adjust the temperature in the high-voltage power distribution cabinet is sent out; and the amplifier is used for amplifying the received signal of the controller and then providing the amplified signal to the ventilating fan or the ventilating fan. According to the invention, the temperature and humidity environment in the high-voltage power distribution cabinet is optimized, and guarantee conditions are provided for the service life of each electric appliance in the high-voltage power distribution cabinet.

Description

technical field [0001] The invention relates to a high-voltage power distribution cabinet in a power system, in particular to a cooling and dehumidification device and method for an inner room of a high-voltage power distribution cabinet. Background technique [0002] The valve lightning arrester of the prior art mainly consists of a wire clamp, a porcelain sleeve, a spring, a spark gap, a mica gasket, a porcelain tube, a valve, and a valve plate. Its working process is: when the arrester is in normal operation in the system, the gap formed by the mica gasket and the spark gap plate isolates the valve of the arrester and the live high-voltage wire. When an overvoltage occurs and reaches a voltage value, the discharge gap discharges immediately. At the same time, the continuous flow of power frequency will also flow into the earth. When the overvoltage disappears, the discharge gap ensures that the arc is extinguished and cut off when the first half discharge crosses zero, ...

AI Technical Summary

Problems solved by technology

Although this kind of lightning arrester can play a role in avoiding it, because the internal spark gap sheet mica gasket and the porcelain tube are only gap fit, it is easy to loosen under the impact of lightning current, and it will lose the lightning protection effect after long-term use.