Development And Analysis Of Electrical Indicating Mark For UHV AC Transmission Lines

When performing outage maintenance work on UHV AC transmission lines,inspection must be conducted in advance,accordance with the relevant provisions of the electricity safety working regulations.Only when the power failure is ensured can the operation be further performed.Contact-type high-voltage electroscopes need to be used with insulation test poles.With the increase of voltage level,the length and deflection of the inspection pole are difficult to meet the requirements,the overall quality is large,and the operation is inconvenient,and it is not suitable for the inspection of the AC line of UHV level.In view of the above problems,this article selected a typical zinc sulfide(ZnS)material as the basis for the preparation of electrical identification devices.In this paper,we first introduce the principles,types and characteristics of electroluminescence materials,and analyze the structure and function of ZnS electroluminescent materials,and introduce the typical ZnS electroluminescent materials.In this paper,the preparation materials,methods,processes and structures of the ZnS inspection mark are described.The sample of the inspection certificate is obtained.Then,this paper aims at the luminescence characteristics of the inspection mark,the test performance,test the volt-ampere curve to get its light-up condition,test the relationship between luminescence characteristics and temperature and voltage,and design the test by designing the test program under high electric field environment.The application plan for the inspection mark of the parallel plate capacitance is performed,and its test performance is tested at the high voltage level and at the test site.On this basis,this paper further analyzes the application of the luminescence characteristics of the inspection mark.From the energy point of view,the dimensions of the inspection mark with parallel plates and the relationship between the size of the electroscope materials and their luminescence characteristics are analyzed as well as the High-electric-field conditions corresponding to the activation of the inspection mark.In addition,the corona phenomenon at the edges of the inspection mark during the testing process is analyzed,and the surface electric field distribution is simulated by ANSYS software,and the structural optimization is targeted.In the end,this paper analyzes and tests the reliability of inspection mark from the analysis of electromagnetic induction effects on the double-circuit lines on the same tower,the problem of blind spots in different locations of transmission lines,and the weather resistance.This paper uses the ATP software to simulate the UHV AC double-circuit line on the same tower to obtain the distribution of the induced voltage and analyze the reliability of the power failure phase inspection,for the problem of the blind spot for electric inspection,the modeling and simulation calculation of the tower-tower line is performed using Maxwell software,and the electric field characteristics of the inspection mark at different positions are analyzed.And this paper tests the weather resistance performance of the inspection mark and simulate the multi-factor conditions of the climate.This paper aims to provide important reference and significance for the inspection of electricity in the UHV field.