| The management information system for protective relaying and fault recorder is introduced to improve the level of fault analysis and the device management. The system is comprised of substation system and master system. The former are linked to the protective relaying and fault recorder and send the data to the host system simultaneously;the host system displays and manages the obtained data, provides the advanced applications, such as recorder data analysis.Monitoring system of relaying plate, a necessary component in protective relaying equipment, is introduced. This system contains two parts: the master system and the substation systems. The substation system chooses embedded model. Advanced 16/32 bits RISC processor and Ethernet controller RTL8019AS are adopted to carry out signal collection and Ethernet communication. Graphic programming language-LabVIEW is used as the master system programming language. The VIs such as, TCP/IP communication VIs, graphics VIs, database VIs and report generation VIs, bring us a lot of convenience to realize the functions of Ethernet data transmission, data processing, data deposition and report generation. This system illustrates the bright future of the application of Virtual Instruments theory and Graphic programming language-LabVIEW to management information system for protective relaying and fault recorder and its related system.At last, a ratio variable compression technique, based on embedded zerotree wavelet image coding, in the interest of releasing the data preservation and transportation burden, is proposed and applied to the growing electric power system data. |
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