| Gas insulated switchgear(GIS) is widely used in the smart substation due to small footprint and many other advantages. However, when it was damaged, the maintenance period was relatively long, the outage time was long, the normal order of social life was seriously affected, and the national economy was loss. This thesis presented intelligent equipment, device development and application software development based on the analyses of the intelligent substation on-line monitoring GIS. The main contents are as follows:(1) The construction of the smart substation system architecture and intelligent switchgear on-line monitoring system framework were presented in the Chapter 2. Framework, function, structure and working principle of the online monitoring technology for the intelligent GIS were researched. The typical application scheme of intelligent online monitoring and measuring system with both technology development and the actual demand were put forward.(2) The sensors for intelligent GIS were selected or developed. Processing circuit of partial discharge ultra-high frequency signal and integrated monitoring IED were displayed. Data fusion and complement each other was realized to improve the accuracy and reliability of the first-hand information. Assessment software of intelligent GIS on-line monitoring system was developed, which realizes the data acquisition, data processing, monitoring and early warning and risk assessment.(3) On-site installation scheme of sensors and integrated monitoring IED for intelligent GIS was given and the installation of on-line monitoring device was completed. The intelligent on-line monitoring of GIS was realized. Analysis results of operation signal showed that the system was qualified for evaluation of the GIS fault. |
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