Design Of Low-voltage Reactive Compensation And Distribution Transformer Monitoring Metering Terminal

In order to improve the quality of electricity,promote the distribution automationdevelopment of Guangxi rural,This subject use Low-voltage reactive compensation anddistribution transformer monitoring metering terminal technical specification2010.01(hereinafter referred to as Technical specification),and Power load management systemdata transmission protocol of Guangxi Power Grid Corp(hereinafter referred to asProtocol) as standard,Low-voltage reactive compensation and distribution transformermonitoring metering terminal be developed,the main research harvests are as follows:(1)According to functions and performance target,Master-Slave Dual-Core hardwarestructure based on double LPC1768chip be found,and analyzes the rationality of thisstructure.According to functions complexity and requirement for real time,function bedistribution between master and slave,software and hardware modules builds.(2)In order to achieve a effective collaboration between master and slave,formulatingMaster-Slave communication protocol,realizating the communication protocol bysoftware, checking the function of the protocol for the Dual-core hardware structureaccording to function distribution situation and data communication Characteristic,somemeasures also be adopted to promote the stability of the communication protocol.Testshows that,the communication protocol can transferred the data fast and reliably.(3)Completed data statistics,analysis and storage of the power quality,real timedatabase,history database,event database has constructed according to protocol require-ment.measure be research and realization to improve anti-interference function of thedatabase.Moreover,In order to let copy data can read with computer and improve thesystem compatibility,data be organization with FAT32file system.(4)According to technical specification and protocol requirement,base oncomparative analysis of The existing communication mode,use RF and GPRS modules toachieve local and telecommuting communications.Moreover,AT code operation methodbe analyzed, measure be research and realization to improve anti-interference function ofthe GPRS parameter configured and normal communication.The function,performance and anti-interference test shows that,this prototype in fullcompliance with the all requirement of the technical specification.