Development Of Distributed Wireless Testing System For UHV AC Substation

At present,it is the rush time for UHV project construction in China.Before operation,the UHV projects need a large number of system commission tests to assess whether meet the engineering design and preliminary simulation forecast.There is no function of network communication in existing test equipments,which need the stand-alone guard.And there is no unified data and transmission format.So besides that the work efficiency is low,and it can't meet the need of time synchronization of multipoint data in wide-areain commission tests.Therefore,a set of distributed test system is to be developedto satisfy engineering requirement.It can be arranged quickly,flexiblyt and acquire thedata on high speed.Also it has the high precision,large capacity of the data storage and the ability of parallel processing.It can meet the aquirement of real-time and the reliability of the test,and it has the abilityto remote operation.So it has a broad application prospect and practical value.At first,this thesisanalyzed the testing requirements of the UHV AC transmission project system commission tests,and determined the performance of the distributed test system and the expected results,then designed the overall scheme.After contrastingseveral widely-used wireless transmissiontechnologypresently,the architecture of the distributed test system based on WLAN wireless transmission technology was identified.Base on the above,the module design and the function planning of the test unit(hardware)and the test platform(software)were completed.And now,it was developed,and verified by actual application.Through the practical application in UHV AC transmission project system commission tests,the developed distributed test system can not only improve the quality of the test,also changed the condition ofinefficient "one machine,one operator","multipoint,more operators",measurement error of the synchronousdatain the past.Itcan meet the growing requirementsof the UHV AC transmission project construction,adapting the intelligently developing direction of the UHV backbone in the future.