High-voltage inverter remote-monitoring system based on gateway technology and realization method thereof

Abstract

The invention discloses a high-voltage inverter remote-monitoring system based on a gateway technology and a realization method thereof, belonging to the technical field of remote communication of a high-voltage frequency conversion system. In the remote-monitoring system, a MODBUS-PROFIBUS serial gateway is adopted as protocol conversion equipment between a high-voltage inverter with an RS485 serial communication interface and a PLC (Programmable Logic Controller) with a PROFIBUS-DP communication interface, so that the high-voltage inverter is not subjected to any programming to be accessed into a PROFIBUS-DP field bus network to realize the remote monitoring of the high-voltage inverter. After system hardware is constructed, only the MODBUS-PROFIBUS serial gateway is simply collocated in the PLC software programming environment, and the PLC can be like an I / O (Input / Output) module of a reader-writer to read and write data in the high-voltage inverter. The system realization is simple, many programming work about communication protocols is saved, and the working efficiency is improved. Moreover, the MODBUS-PROFIBUS serial gateway is installed in the high-voltage inverter, and the higher anti-interference performance of the communication line of the system is ensured.

Description

technical field [0001] The invention belongs to the technical field of remote communication of a high-voltage frequency conversion system, and in particular relates to a method for realizing a remote monitoring system of a high-voltage frequency converter based on gateway technology. Background technique [0002] After years of development and application of high-voltage frequency conversion speed regulation technology, its advantages in speed regulation performance, power saving effect, improvement of equipment operating conditions, improvement of system safety and reliability, equipment utilization rate, and extension of equipment service life have been obtained. Fully reflected, it has been widely used in electric power, metallurgy, petrochemical, water supply, cement, mining and other industries. With the improvement of industrial automation, on the basis of ensuring the reliable operation of the high-voltage inverter itself, many users require the establishment of a rem...

AI Technical Summary

Problems solved by technology

At present, most manufacturers of high-voltage inverter products use the RS485 serial communication interface based on the MODBUS protocol. A MODBUS communication module can be installed in the PLC, but a matching hardware dog must be installed at the same time as the MODBUS communication module. The system The cost is greatly increased. In addition, in this way, the distance of the MODBUS communication cable and the environment may reduce the anti-interference performance of the entire communication system, and the cost performance is low.

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