Design And Application Reseach Of The Haidian500KV Cable Accessory

As people with the increase of demand for electricity, electricity consumption increases, big cities load density increases, the need to adopt a higher transmission capacity of transmission way,500kVcable transmission system as the current international put into commercial operation way of highest cable voltage level, is the future mega city electricity conveying to the main form of the city center, is also the current hydropower electricity delivered a major way.This paper analyzes the distribution of electric field of500kV cable, chose used for electric stress control method, the selection of the stress cone production material, and the research methods of stress cone size production are analyzed, determine the structure of the cable accessories.In this paper, according to the size of the cable accessories and installation requirements, set the installation technology of three kinds of cable accessories and two kinds of special process, and put forward the requirements on the installation of the cable accessories environment.In this paper, according to the Haidian short-circuit current level of500kV cable system and grounding system, after calculate and determine the grounding cable and coaxial cable section, the middle joint cross interconnection in the sheath protector performance requirements.To run the the cable and tunnel monitoring system, this paper determines the main monitoring factors, and formulate the corresponding implementing measures, for the safety operation of the Haidian500kVcable line provides a guarantee.