Key Testing Technology for AC UHV On-Site Handover
This paper focuses on UHV substation main equipment handover testing technology and related digital simulation modeling technology in the power transmission demonstrative project Anhui-Huainan-Shanghai.It solved the problem of electromagnetic interference in AC UHV transformer on-site partial discharge testing space,realized fault accurate positioning in AC UHV GIS on-site pressure testing,worked out the AC/DC interference in parameter testing of AC UHV double-circuit line on the same tower,innovated UHV GIS 1100 kV on-site pressure test with partial discharge detection,used excitation transformer to make optimization design for UHV main transformer on-site partial discharge test,completed the first 1000 kV on-load voltage regulating main transformer site commissioning test,and completed technology research on key test equipment optimal allocation.
AC UHVGISdouble-circuit lines on the same towerpartial discharge