Improving UHVDC Wall Bearings Electric Reliability: Grading Ring Optimization and Field Investigation

The cause of the violent explosion of a standard 800 kV conversion generator component has been examined in this study. The electromotive force and possibility dispersion along the HV bearing are calculated using the numerical simulation technique, and the construction of the scoring plates for the 800 kV bearing is optimized. Software is employed to build the two-half model of the 800kV gasket and control hall arrangement. The junction between the flange and indeed the enclosure and casing have a greater field strength, and the electromotive force is spread instead irregularly, in accordance with the computation of the magnetic charge and dissipation factor along the sleeve without any classification rings. The technique for attaching a classification ring to the hinge side to lessen its field strength from around the top of the shed and scabbard is then presented in this article. In order to reduce the maximum electrical field strength all around the component and the evaluation ring and to achieve the best evaluation ring construction, this technique also improves the position and setup factors of the assessment ring. The optimum layout is able to be used for the 800-kV power production project to minimize the likelihood of overloads of the UHVDC stabilizer bar after the model. The model confirms that the maximum field density from around the ground of the specimen, shed and holster, and the assessment ring is dominated within an appropriate limit.