Application Of Digital Oscilloscope In Substation Equipment And Secondary Circuit Detection

With the continuous increasing of the power load of the society,the stable operation of the power grid becomes more and more important.Among them,good operation of the substation is very important,it can not be separated from the coordination and cooperation of various electrical equipment.As a maintenance personnel,in daily work,I need to carry out periodic maintenance of the electrical equipment in the station,find out the abnormal failure and eliminate it in time.This article starts with the digital oscilloscope's development,principle and structure,then study the application of digital oscilloscope in substation equipment and secondary circuit.Based on the application of digital oscilloscope in the test of high voltage electric equipment and the detection of power equipment,this paper analyses the necessity of fault recording system,harmonic test,and gives the detection method of oscilloscope in power transformer and switchgear testing.Subsequently,this paper discusses the test method of oscilloscope in insulator,aluminum electrolytic capacitor and power electronic equipment,and analyses the operation of the equipment according to the test data.As a kind of low-voltage electronic equipment,digital oscilloscope is mainly used in the detection and verification of secondary equipment.According to the research work of digital oscilloscope,this article investigates the relay protection devices in substation,measures and analyses the voltage of the secondary circuit,combined with the function check of relay protection device,finishes troubleshooting in the secondary system by digital oscilloscope.In addition,the test method of modem is introduced,and the bright future of smart grid is forecasted.In the end,this paper gives the electromagnetic compatibility test project which has been adopted by the digital oscilloscope,and analyzes the relative immunity test with the standard of electromagnetic compatibility test.In addition,it also points out the testing requirements of digital oscilloscope in substation environment.