Humidity detection system in high voltage equipment area

Abstract

The invention provides a humidity detection system for a high-voltage equipment region. The humidity detection system comprises a capacitor, a charge circuit, a transmission circuit and a receiving circuit, wherein the capacitor is arranged near high-voltage equipment; the charge circuit is electrically connected with the capacitor; the transmission circuit is connected with the output end of the charge circuit and is used for transmitting a wireless signal; and the receiving circuit is used for receiving the wireless signal. The humidity detection system is capable of detecting the humidity of the high-voltage equipment region within a short period of time, and does not generate drift of a dielectric constant; the accuracy of the final humidity detection result is effectively ensured; and the detection is rapid.

Description

technical field [0001] The invention relates to a detection system, in particular to a humidity detection system in a high-voltage equipment area. Background technique [0002] The atmospheric humidity around high-voltage lines and high-voltage equipment is an extremely important parameter for judging the insulation condition of high-voltage equipment and the icing and condensation conditions of high-voltage equipment. The method mainly relies on manual observation, which has a certain impact on the final detection results, and is not easy to be intelligent; the capacitive humidity sensor is mainly composed of two parts: a humidity sensitive capacitor and a conversion circuit; it consists of a glass substrate, a lower electrode, and a humidity sensitive material. , The upper electrode consists of several parts. The upper and lower electrodes and the humidity-sensitive material in the middle form a capacitor. Humidity-sensitive material is a kind of high molecular polymer, ...

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Problems solved by technology

The conversion circuit of the sensor converts the change of the humidity sensitive capacitance into the change of the voltage, so as to reflect the humidity of the atmosphere; but the existing capacitive sensor detection has the following disadvantages: the absorption or release of water molecules from the atmosphere by the humidity sensitive material is a slow penetration process. process, so the response to humidity changes is relatively slow. In the judgment of insulation status, humidity detection needs to be carried out in a short period of time. If the time is too long, it will affect the accuracy of the final judgment of insulation status. Aging, water absorption and permeability will decrease, resulting in a drift in the dielectric constant and affecting the measurement results

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