Development And Application Of Condition Monitoring System For Large Hydro Turbine Governor Based On Springboot

With the construction and commissioning of super-large hydropower stations in the middle and upper reaches of the Yangtze River in my country,the composition of superlarge hydroelectric generators has become a key equipment to support national energy security and achieve emission reduction targets.Extra-large hydroelectric generating unit equipment has the characteristics of huge single unit capacity,strict speed control requirements,and complex structure.Its safe operation has a major impact on maintaining the stability of the power system.This article takes the super large hydraulic turbine governor as the research object,researches and designs the governor state monitoring system including hardware acquisition device and software application system.First of all,the hardware acquisition scheme is researched and designed,and Modbus/TCP protocol is used as the communication method between the sensors of the governor,which solves the problem of incompatibility of the electrical interfaces reserved by the sensors,and optimizes the hardware acquisition plan,adds a conversion device between the hardware acquisition device and the upper data server,reduces the time delay of monitoring data acquisition,and improves the accuracy of data acquisition;Secondly,the concept of time series database is introduced,and the time series database Influx DB is used as the monitoring data storage solution,which realizes the storage problem of massive monitoring data and improves the efficiency of monitoring data query.Finally,the server-side development architecture is optimized,combined with the back-end development framework based on Springboot,to complete the development of the condition monitoring application system.The main research work of the thesis can be divided into the following three points:(1)Designed a data collection plan for the condition monitoring system.In order to realize the improvement of monitoring data collection efficiency and sampling accuracy,Modbus/TCP protocol is adopted as the hardware communication method.On this basis,the server data access scheme is designed to increase the transition of the conversion device.The server directly operates the memory of the conversion device to read,write,process and analyze the data,which solves the problem of insufficient data processing capacity of PLC in the traditional scheme,reduces the delay of monitoring data,and effectively improves the sampling accuracy of monitoring data.(2)Carried out the database design of the condition monitoring system.In view of the time series and massive characteristics of monitoring data,the time series database Influx DB is introduced as the data storage solution,and the database table design is carried out for the system operation data.In order to verify the effectiveness of the time series data storage scheme,a comparative experiment was conducted with the traditional scheme based on the relational database Mysql.Experimental results show that the data storage solution based on the time-series database Influx DB is significantly better than the solution based on the relational database Mysql in terms of storage space and query efficiency.(3)Developed a super-large hydraulic turbine governor condition monitoring application system.The javaweb development framework based on Springboot is introduced,and the system is divided into a data encapsulation layer for monitoring data,a distributed business layer for data analysis,and an application interaction layer for data results display.The system integrates five functional modules including status monitoring,fault warning,alarm,working condition query,and report generation,and has carried out corresponding page design and development to realize remote status monitoring and improve the safety and stability of unit operation.The system has been deployed on-site at Baihetan Hydropower Station,further verifying the effectiveness of the research in this paper.