Passive wireless partial discharge, temperature and humidity composite sensing monitoring system

Abstract

The invention belongs to the technical field of partial discharge and temperature and humidity monitoring of power equipment, and particularly relates to a passive wireless partial discharge and temperature and humidity composite sensing monitoring system which comprises a passive wireless partial discharge and temperature and humidity composite sensor, a data collector and a software monitoring system. The data collector excites the passive wireless partial discharge and temperature and humidity composite sensor through magnetic coupling resonance, and after the passive wireless partial discharge and temperature and humidity composite sensor is activated, signals of partial discharge, contact temperature, environment temperature and environment humidity are obtained and then wirelessly transmitted to the data collector. The data collector collects, processes and stores data and then uploads the data to a cloud through wireless transmission or transmits the data to a receiving terminal through Lora, and finally the software monitoring system displays, analyzes and stores the data. The system realizes wireless charging based on magnetic coupling resonance, realizes real-time monitoring of temperature, humidity and partial discharge through a wireless communication technology, and does not need battery installation and wiring connection.

Description

technical field [0001] The invention belongs to the technical field of partial discharge and temperature and humidity monitoring of power equipment, and in particular relates to a passive wireless partial discharge and temperature and humidity composite sensing monitoring system. Background technique [0002] At present, the partial discharge and temperature monitoring of power equipment are carried out separately by manual inspection, and there is no mature online monitoring technology that can monitor the two related characteristic quantities at the same time. [0003] Commonly used temperature monitoring methods are: active (battery) wireless temperature measurement, passive wireless temperature measurement, infrared patrol monitoring and optical fiber temperature measurement. Active (battery) wireless temperature measurement is a real-time online, contact temperature measurement method, but it needs irregular power outages to replace the battery, and the battery has prob...

AI Technical Summary

Problems solved by technology

The main manifestations are: (1) There are differences between the test conditions and the operating conditions, and the off-line test cannot fully reflect the insulation status of the equipment under operating conditions

(2) The insulation story itself has a process of occurrence and development, which is related to operating conditions and insulation conditions, and it is not easy to accurately find out in regular preventive tests

(3) Both regular maintenance and insulation preventive tests need to be carried out off-line when the power is off, the test time is long, the workload is heavy, and it will cause a large amount of power loss and possible equipment damage

[0011] Moreover, the existing partial discharge monitoring methods have problems such as low accuracy, expensive equipment, and manual regular inspections. The existing temperature measurement cannot meet the actual requirements in terms of real-time, convenience, and automation.

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