Phase modifier wireless state monitoring system and method based on LORA technology

Abstract

The invention discloses a phase modifier wireless state monitoring system and method based on the LORA technology. The system comprises a power module, a processor, a sensor unit connected with the processor, a data conversion module, a data storage module, a LORA communication module and a display module connected with the data conversion module. The sensor unit is used for collecting a current signal, a voltage signal and a rotating speed signal of the phase modifier in a rotating state; the processor calculates the phase difference between the voltage and the current according to the current signal and the voltage signal, and substitutes the phase difference into a calculation formula of active power and reactive power to calculate the active power and the reactive power of the phase modifier rotor winding; and the LORA communication module transmits the active power and the reactive power calculated by the processor and a rotating speed signal acquired by the processor to a remoteterminal. According to the invention, ultra-long-distance state monitoring can be realized, the phase modifier can be found in an ultra-short time, the power consumption is low, the safety is high, on-site inspection by detection personnel is not needed, and the labor and time costs are greatly saved.

Description

technical field [0001] The present invention relates to the field of state monitoring of a camera, in particular to a wireless state monitoring system and method for a camera based on LORA technology. Background technique [0002] The rotor of a large-capacity condenser has been in the harsh environment of high-speed rotation and strong electromagnetic field for a long time. It often bears the combined effects of various stresses and thermal loads, and is prone to failure, especially the inter-turn short circuit fault of the rotor winding. A slight turn-to-turn short circuit of the rotor winding usually does not have a serious impact on the generator, but if it is allowed to develop, the excitation current will increase significantly, the asymmetry of the rotor N and S pole windings will increase, and the heat difference between the two sides of the rotor will further widen , resulting in obvious thermal bending of the rotor, increased unit vibration, and may even further ev...

AI Technical Summary

Problems solved by technology

These devices use the commonly used WiFi, Bluetooth and ZigBee. Their advantage lies in the fast transmission speed, but most of them use the 2.4GHz frequency band. Extensive use of the same frequency band will cause congestion in the transmission channel, and the effective transmission distance is within 200m; among them, the WiFi The security is poor, the cost is high, and the Bluetooth transmission distance is very short, and the ZigBee transmission rate is far inferior to the former two

Images