| Global energy interconnection,UHV AC and DC power grid construction and development,along with the rapid development of economy and society,and lead to the existing grid structure and development pattern has undergone earth-shaking changes.The existing traditional cannot implement integrated automation substation,need to be manned,spend a lot of manpower,needs to be under the existing grid structure increase the ability of substation integrated automation.The smart grid is proposed by state grid company in the new historical period of strategic vision,and the basis of the construction of smart grid,is the construction of intelligent substation,and intelligent substation is the core of intelligent equipment and intelligent secondary equipment at a time.Limited to domestic manufacturing level of a device,intelligent substation gradually raise the level of technology in the research and test,to gradually perfect.In this paper,based on the intelligent substation,contact silver mound substation 110 kV SueJiadun construction,expounds the basic structure of intelligent substation,including the network connection,the intelligent substation in intelligent primary and secondary equipment was analyzed,and explains the IEC61850 statute,pay attention to introduce the specification different from previous difference and superiority of the code.Finally,combining with the pier construction,SueJiadun of intelligent substation debugging in detail.Intelligent substation basic simple structure can be summarized as three layer two net,three layers of refers to the process layer,spacer layer and control layer.Process layer equipment mainly refers to a device,such as circuit breaker,current transformer,voltage transformer breaker and isolation,and the related accessories related to a device.Interval layer refers to the protection of equipment,equipment for measurement and control device.Station control refers to the background layer equipment monitoring system,etc.Two network respectively chicago-brewed GOOSE network and SV nets,chicago-brewed GOOSE main transmission network switch quantity information and various jump closing command,SV main transmission network information such as voltage,current.Intelligent substation in the intelligent device at a time,there are electronic voltage transformers,electronic current transformer,differs from the traditional transformer unit itself has the information transformation,intelligent transformer voltage and current can be analog in situ converted into digital signals.Merge unit will be collected from the current transformer,voltage transformer,through the optical fiber transmission of information to the various interval layer devices,such as protection,measurement and control device,etc.Intelligent terminal is information receiving and sending of mediation,it accepts measure preserving device sends jump closing command,send commands to the measurement and control device at the same time,open or close the switch.At the same time,intelligent substation can also realize substation of some advanced application functions,such as electric energy acquisition,alarm direct passing,vector analysis,etc.Compared with the traditional substation debugging,some changes have taken place in smart substation debugging,mainly reflected in the change of the specifications,the change of network,the use of electronic transformers and merging units,a device intelligent device and test structure changes,function distribution caused by factors such as different freedom.Intelligent substation debugging have factory debugging and commissioning.Factory debugging by the manufacturer are finished in our factory,intelligent substation main debugging on the spot.In 110 kv Sue home pier substation,for example,because the outdoor merging unit,intelligent terminal,and background monitoring system respectively by different manufacturers supply,lead to numerous manufacturers,in the process of commissioning alignment between each manufacturer equipment account for a large part of quantities. |
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