Research On Remote Monitoring System Of High-Power Frequency Converter For Mine

Thermal power generation is one of the important sources of electricity in my country,and the output of coal seriously affects the power generation.With the development of mobile communication technology and computer technology,the state has put forward new requirements and ideas for coal mining.Coal mines are gradually developing in the direction of informatization and intelligence,and the application of remote monitoring systems for coal mines has emerged.Most coal mines in our country adopt electrified operations,and frequency conversion speed regulation systems are widely used,such as scraper conveyors,belt conveyors,tunneling machines,ventilators,coal mining machines,etc.The above-mentioned large-scale electromechanical equipment affects the production efficiency of coal mines,and it is particularly important to carry out informatization and intelligent control.The underground working environment is harsh and the geographical environment is complicated,and the remote control of the frequency converter is more important.When operating and maintaining underground coal mines perform maintenance,they often do not have accurate operating parameters of the relevant inverters,so they cannot judge the fault type and confirm the maintenance plan.This causes losses to coal production enterprises and increases the risk of safety accidents.In view of the above problems,in order to solve the control and maintenance of the mine inverter in the actual operation process,this thesis proposes a remote monitoring system for the mine high-power inverter according to the actual situation of coal production enterprises.This system mainly consists of three layers of data control,data transmission,and data processing to form a remote monitoring model of the inverter.At the same time,the fault information of the inverter is collected and stored in the database.The data control module is composed of the underground terminal inverter;the data transmission module and the communication conversion module use the HF2421 G DTU,use the Modbus communication protocol to connect the DTU and the inverter,and receive various data transmitted by the inverter in a wireless or wired manner;The data processing layer uses C# language to control the start and stop of the inverter on the host computer interface and set the inverter according to the preset parameters.The monitoring interface displays the real-time data of the inverter operation;the SQL server 2014 database is used to set up user management and automatic data saving And data printing export function,and data output in Excel formThis thesis takes the remote monitoring system of the high-power inverter for mining as the research object,and mainly studies the communication protocol,data recognition,upper computer interface and database related content,and is designed from the aspects of hardware configuration,communication configuration,software programming,and database.The operation dispatcher can remotely monitor the inverter through the host computer interface to grasp the operation status of the underground inverter,view the real-time data of the inverter operation and adjust the operation parameters of the inverter to maximize the production efficiency.After the system is built,test the system as a whole.The remote monitoring system of the high-power inverter was tested by simulating the actual production conditions of the underground under the existing experimental conditions in the laboratory.Compared with the initial design,the test operation result basically realized the remote monitoring function of the high-power inverter for mines.To a certain extent,this system is of great significance to the construction of smart mines and coal mine informatization.This thesis has xx pictures,xx tables,and 51 references.